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koffice/kexi/plugins/queries/kexiquerydesignerguieditor.cpp

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/* This file is part of the KDE project
Copyright (C) 2004 Lucijan Busch <lucijan@kde.org>
Copyright (C) 2004-2006 Jaroslaw Staniek <js@iidea.pl>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "kexiquerydesignerguieditor.h"
#include <tqlayout.h>
#include <tqpainter.h>
#include <tqdom.h>
#include <tqregexp.h>
#include <kdebug.h>
#include <tdelocale.h>
#include <tdemessagebox.h>
#include <kexidb/field.h>
#include <kexidb/queryschema.h>
#include <kexidb/connection.h>
#include <kexidb/parser/parser.h>
#include <kexidb/parser/sqlparser.h>
#include <kexidb/utils.h>
#include <kexidb/roweditbuffer.h>
#include <kexiutils/identifier.h>
#include <kexiproject.h>
#include <keximainwindow.h>
#include <kexiinternalpart.h>
#include <kexitableview.h>
#include <kexitableitem.h>
#include <kexitableviewdata.h>
#include <kexidragobjects.h>
#include <kexidialogbase.h>
#include <kexidatatable.h>
#include <kexi.h>
#include <kexisectionheader.h>
#include <widget/tableview/kexidataawarepropertyset.h>
#include <widget/relations/kexirelationwidget.h>
#include <widget/relations/kexirelationviewtable.h>
#include <koproperty/property.h>
#include <koproperty/set.h>
#include "kexiquerypart.h"
//! @todo remove KEXI_NO_QUERY_TOTALS later
#define KEXI_NO_QUERY_TOTALS
//! indices for table columns
#define COLUMN_ID_COLUMN 0
#define COLUMN_ID_TABLE 1
#define COLUMN_ID_VISIBLE 2
#ifdef KEXI_NO_QUERY_TOTALS
# define COLUMN_ID_SORTING 3
# define COLUMN_ID_CRITERIA 4
#else
# define COLUMN_ID_TOTALS 3
# define COLUMN_ID_SORTING 4
# define COLUMN_ID_CRITERIA 5
#endif
/*! @internal */
class KexiQueryDesignerGuiEditor::Private
{
public:
Private()
: fieldColumnIdentifiers(1009, false/*case insens.*/)
{
droppedNewItem = 0;
slotTableAdded_enabled = true;
}
bool changeSingleCellValue(KexiTableItem &item, int columnNumber,
const TQVariant& value, KexiDB::ResultInfo* result)
{
data->clearRowEditBuffer();
if (!data->updateRowEditBuffer(&item, columnNumber, value)
|| !data->saveRowChanges(item, true))
{
if (result)
*result = *data->result();
return false;
}
return true;
}
KexiTableViewData *data;
KexiDataTable *dataTable;
TQGuardedPtr<KexiDB::Connection> conn;
KexiRelationWidget *relations;
KexiSectionHeader *head;
TQSplitter *spl;
/*! Used to remember in slotDroppedAtRow() what data was dropped,
so we can create appropriate prop. set in slotRowInserted()
This information is cached and entirely refreshed on updateColumnsData(). */
KexiTableViewData *fieldColumnData, *tablesColumnData;
/*! Collects identifiers selected in 1st (field) column,
so we're able to distinguish between table identifiers selected from
the dropdown list, and strings (e.g. expressions) entered by hand.
This information is cached and entirely refreshed on updateColumnsData().
The dict is filled with (char*)1 values (doesn't matter what it is);
*/
TQDict<char> fieldColumnIdentifiers;
KexiDataAwarePropertySet* sets;
KexiTableItem *droppedNewItem;
TQString droppedNewTable, droppedNewField;
bool slotTableAdded_enabled : 1;
};
static bool isAsterisk(const TQString& tableName, const TQString& fieldName)
{
return tableName=="*" || fieldName.endsWith("*");
}
//! @internal \return true if sorting is allowed for \a fieldName and \a tableName
static bool sortingAllowed(const TQString& fieldName, const TQString& tableName) {
return ! (fieldName=="*" || (fieldName.isEmpty() && tableName=="*"));
}
//=========================================================
KexiQueryDesignerGuiEditor::KexiQueryDesignerGuiEditor(
KexiMainWindow *mainWin, TQWidget *parent, const char *name)
: KexiViewBase(mainWin, parent, name)
, d( new Private() )
{
d->conn = mainWin->project()->dbConnection();
d->spl = new TQSplitter(TQt::Vertical, this);
d->spl->setChildrenCollapsible(false);
d->relations = new KexiRelationWidget(mainWin, d->spl, "relations");
connect(d->relations, TQT_SIGNAL(tableAdded(KexiDB::TableSchema&)),
this, TQT_SLOT(slotTableAdded(KexiDB::TableSchema&)));
connect(d->relations, TQT_SIGNAL(tableHidden(KexiDB::TableSchema&)),
this, TQT_SLOT(slotTableHidden(KexiDB::TableSchema&)));
connect(d->relations, TQT_SIGNAL(tableFieldDoubleClicked(KexiDB::TableSchema*,const TQString&)),
this, TQT_SLOT(slotTableFieldDoubleClicked(KexiDB::TableSchema*,const TQString&)));
d->head = new KexiSectionHeader(i18n("Query Columns"),TQt::Vertical, d->spl);
d->dataTable = new KexiDataTable(mainWin, d->head, "guieditor_dataTable", false);
d->dataTable->dataAwareObject()->setSpreadSheetMode();
d->data = new KexiTableViewData(); //just empty data
d->sets = new KexiDataAwarePropertySet( this, d->dataTable->dataAwareObject() );
initTableColumns();
initTableRows();
TQValueList<int> c;
c << COLUMN_ID_COLUMN << COLUMN_ID_TABLE << COLUMN_ID_CRITERIA;
if (d->dataTable->tableView()/*sanity*/) {
d->dataTable->tableView()->adjustColumnWidthToContents(COLUMN_ID_VISIBLE);
d->dataTable->tableView()->adjustColumnWidthToContents(COLUMN_ID_SORTING);
d->dataTable->tableView()->maximizeColumnsWidth( c );
d->dataTable->tableView()->setDropsAtRowEnabled(true);
connect(d->dataTable->tableView(), TQT_SIGNAL(dragOverRow(KexiTableItem*,int,TQDragMoveEvent*)),
this, TQT_SLOT(slotDragOverTableRow(KexiTableItem*,int,TQDragMoveEvent*)));
connect(d->dataTable->tableView(), TQT_SIGNAL(droppedAtRow(KexiTableItem*,int,TQDropEvent*,KexiTableItem*&)),
this, TQT_SLOT(slotDroppedAtRow(KexiTableItem*,int,TQDropEvent*,KexiTableItem*&)));
connect(d->dataTable->tableView(), TQT_SIGNAL(newItemAppendedForAfterDeletingInSpreadSheetMode()),
this, TQT_SLOT(slotNewItemAppendedForAfterDeletingInSpreadSheetMode()));
}
connect(d->data, TQT_SIGNAL(aboutToChangeCell(KexiTableItem*,int,TQVariant&,KexiDB::ResultInfo*)),
this, TQT_SLOT(slotBeforeCellChanged(KexiTableItem*,int,TQVariant&,KexiDB::ResultInfo*)));
connect(d->data, TQT_SIGNAL(rowInserted(KexiTableItem*,uint,bool)),
this, TQT_SLOT(slotRowInserted(KexiTableItem*,uint,bool)));
connect(d->relations, TQT_SIGNAL(tablePositionChanged(KexiRelationViewTableContainer*)),
this, TQT_SLOT(slotTablePositionChanged(KexiRelationViewTableContainer*)));
connect(d->relations, TQT_SIGNAL(aboutConnectionRemove(KexiRelationViewConnection*)),
this, TQT_SLOT(slotAboutConnectionRemove(KexiRelationViewConnection*)));
TQVBoxLayout *l = new TQVBoxLayout(this);
l->addWidget(d->spl);
addChildView(d->relations);
addChildView(d->dataTable);
setViewWidget(d->dataTable, true);
d->relations->setSizePolicy(TQSizePolicy::Expanding,TQSizePolicy::Expanding);
d->head->setSizePolicy(TQSizePolicy::Expanding,TQSizePolicy::Expanding);
updateGeometry();
d->spl->setSizes(TQValueList<int>()<< 800<<400);
}
KexiQueryDesignerGuiEditor::~KexiQueryDesignerGuiEditor()
{
}
void
KexiQueryDesignerGuiEditor::initTableColumns()
{
KexiTableViewColumn *col1 = new KexiTableViewColumn("column", KexiDB::Field::Enum, i18n("Column"),
i18n("Describes field name or expression for the designed query."));
col1->setRelatedDataEditable(true);
d->fieldColumnData = new KexiTableViewData(KexiDB::Field::Text, KexiDB::Field::Text);
col1->setRelatedData( d->fieldColumnData );
d->data->addColumn(col1);
KexiTableViewColumn *col2 = new KexiTableViewColumn("table", KexiDB::Field::Enum, i18n("Table"),
i18n("Describes table for a given field. Can be empty."));
d->tablesColumnData = new KexiTableViewData(KexiDB::Field::Text, KexiDB::Field::Text);
col2->setRelatedData( d->tablesColumnData );
d->data->addColumn(col2);
KexiTableViewColumn *col3 = new KexiTableViewColumn("visible", KexiDB::Field::Boolean, i18n("Visible"),
i18n("Describes visibility for a given field or expression."));
col3->field()->setDefaultValue( TQVariant(false) );
col3->field()->setNotNull( true );
d->data->addColumn(col3);
#ifndef KEXI_NO_QUERY_TOTALS
KexiTableViewColumn *col4 = new KexiTableViewColumn("totals", KexiDB::Field::Enum, i18n("Totals"),
i18n("Describes a way of computing totals for a given field or expression."));
TQValueVector<TQString> totalsTypes;
totalsTypes.append( i18n("Group by") );
totalsTypes.append( i18n("Sum") );
totalsTypes.append( i18n("Average") );
totalsTypes.append( i18n("Min") );
totalsTypes.append( i18n("Max") );
//todo: more like this
col4->field()->setEnumHints(totalsTypes);
d->data->addColumn(col4);
#endif
KexiTableViewColumn *col5 = new KexiTableViewColumn("sort", KexiDB::Field::Enum, i18n("Sorting"),
i18n("Describes a way of sorting for a given field."));
TQValueVector<TQString> sortTypes;
sortTypes.append( "" );
sortTypes.append( i18n("Ascending") );
sortTypes.append( i18n("Descending") );
col5->field()->setEnumHints(sortTypes);
d->data->addColumn(col5);
KexiTableViewColumn *col6 = new KexiTableViewColumn("criteria", KexiDB::Field::Text, i18n("Criteria"),
i18n("Describes the criteria for a given field or expression."));
d->data->addColumn(col6);
// KexiTableViewColumn *col7 = new KexiTableViewColumn(i18n("Or"), KexiDB::Field::Text);
// d->data->addColumn(col7);
}
void KexiQueryDesignerGuiEditor::initTableRows()
{
d->data->deleteAllRows();
//const int columns = d->data->columnsCount();
for (int i=0; i<(int)d->sets->size(); i++) {
KexiTableItem* item;
d->data->append(item = d->data->createItem());
item->at(COLUMN_ID_VISIBLE) = TQVariant(false);
}
d->dataTable->dataAwareObject()->setData(d->data);
updateColumnsData();
}
void KexiQueryDesignerGuiEditor::updateColumnsData()
{
d->dataTable->dataAwareObject()->acceptRowEdit();
TQStringList sortedTableNames;
for (TablesDictIterator it(*d->relations->tables());it.current();++it)
sortedTableNames += it.current()->schema()->name();
qHeapSort( sortedTableNames );
//several tables can be hidden now, so remove rows for these tables
TQValueList<int> rowsToDelete;
for (int r = 0; r<(int)d->sets->size(); r++) {
KoProperty::Set *set = d->sets->at(r);
if (set) {
TQString tableName = (*set)["table"].value().toString();
TQString fieldName = (*set)["field"].value().toString();
const bool allTablesAsterisk = tableName=="*" && d->relations->tables()->isEmpty();
const bool fieldNotFound = tableName!="*"
&& !(*set)["isExpression"].value().toBool()
&& sortedTableNames.end() == tqFind( sortedTableNames.begin(), sortedTableNames.end(), tableName );
if (allTablesAsterisk || fieldNotFound) {
//table not found: mark this line for later removal
rowsToDelete += r;
}
}
}
d->data->deleteRows( rowsToDelete );
//update 'table' and 'field' columns
d->tablesColumnData->deleteAllRows();
d->fieldColumnData->deleteAllRows();
d->fieldColumnIdentifiers.clear();
KexiTableItem *item = d->fieldColumnData->createItem(); //new KexiTableItem(2);
(*item)[COLUMN_ID_COLUMN]="*";
(*item)[COLUMN_ID_TABLE]="*";
d->fieldColumnData->append( item );
d->fieldColumnIdentifiers.insert((*item)[COLUMN_ID_COLUMN].toString(), (char*)1); //cache
// tempData()->clearQuery();
tempData()->unregisterForTablesSchemaChanges();
for (TQStringList::const_iterator it = sortedTableNames.constBegin();
it!=sortedTableNames.constEnd(); ++it)
{
//table
/*! @todo what about query? */
KexiDB::TableSchema *table = d->relations->tables()->find(*it)->schema()->table();
d->conn->registerForTableSchemaChanges(*tempData(), *table); //this table will be used
item = d->tablesColumnData->createItem(); //new KexiTableItem(2);
(*item)[COLUMN_ID_COLUMN]=table->name();
(*item)[COLUMN_ID_TABLE]=(*item)[COLUMN_ID_COLUMN];
d->tablesColumnData->append( item );
//fields
item = d->fieldColumnData->createItem(); //new KexiTableItem(2);
(*item)[COLUMN_ID_COLUMN]=table->name()+".*";
(*item)[COLUMN_ID_TABLE]=(*item)[COLUMN_ID_COLUMN];
d->fieldColumnData->append( item );
d->fieldColumnIdentifiers.insert((*item)[COLUMN_ID_COLUMN].toString(), (char*)1); //cache
for (KexiDB::Field::ListIterator t_it = table->fieldsIterator();t_it.current();++t_it) {
item = d->fieldColumnData->createItem(); // new KexiTableItem(2);
(*item)[COLUMN_ID_COLUMN]=table->name()+"."+t_it.current()->name();
(*item)[COLUMN_ID_TABLE]=TQString(" ") + t_it.current()->name();
d->fieldColumnData->append( item );
d->fieldColumnIdentifiers.insert((*item)[COLUMN_ID_COLUMN].toString(), (char*)1); //cache
}
}
//TODO
}
KexiRelationWidget *KexiQueryDesignerGuiEditor::relationView() const
{
return d->relations;
}
KexiQueryPart::TempData *
KexiQueryDesignerGuiEditor::tempData() const
{
return static_cast<KexiQueryPart::TempData*>(parentDialog()->tempData());
}
static TQString msgCannotSwitch_EmptyDesign() {
return i18n("Cannot switch to data view, because query design is empty.\n"
"First, please create your design.");
}
bool
KexiQueryDesignerGuiEditor::buildSchema(TQString *errMsg)
{
//build query schema
KexiQueryPart::TempData * temp = tempData();
if (temp->query()) {
temp->clearQuery();
} else {
temp->setQuery( new KexiDB::QuerySchema() );
}
//add tables
for (TablesDictIterator it(*d->relations->tables()); it.current(); ++it) {
/*! @todo what about query? */
temp->query()->addTable( it.current()->schema()->table() );
}
//add fields, also build:
// -WHERE expression
// -ORDER BY list
KexiDB::BaseExpr *whereExpr = 0;
const uint count = TQMIN(d->data->count(), d->sets->size());
bool fieldsFound = false;
KexiTableViewData::Iterator it(d->data->iterator());
for (uint i=0; i<count && it.current(); ++it, i++) {
if (!it.current()->at(COLUMN_ID_TABLE).isNull() && it.current()->at(COLUMN_ID_COLUMN).isNull()) {
//show message about missing field name, and set focus to that cell
kexipluginsdbg << "no field provided!" << endl;
d->dataTable->dataAwareObject()->setCursorPosition(i,0);
if (errMsg)
*errMsg = i18n("Select column for table \"%1\"")
.arg(it.current()->at(COLUMN_ID_TABLE).toString());
return false;
}
KoProperty::Set *set = d->sets->at(i);
if (set) {
TQString tableName = (*set)["table"].value().toString().stripWhiteSpace();
TQString fieldName = (*set)["field"].value().toString();
TQString fieldAndTableName = fieldName;
KexiDB::Field *currentField = 0; // will be set if this column is a single field
KexiDB::QueryColumnInfo* currentColumn = 0;
if (!tableName.isEmpty())
fieldAndTableName.prepend(tableName+".");
const bool fieldVisible = (*set)["visible"].value().toBool();
TQString criteriaStr = (*set)["criteria"].value().toString();
TQCString alias = (*set)["alias"].value().toCString();
if (!criteriaStr.isEmpty()) {
int token;
KexiDB::BaseExpr *criteriaExpr = parseExpressionString(criteriaStr, token,
true/*allowRelationalOperator*/);
if (!criteriaExpr) {//for sanity
if (errMsg)
*errMsg = i18n("Invalid criteria \"%1\"").arg(criteriaStr);
delete whereExpr;
return false;
}
//build relational expression for column variable
KexiDB::VariableExpr *varExpr = new KexiDB::VariableExpr(fieldAndTableName);
criteriaExpr = new KexiDB::BinaryExpr(KexiDBExpr_Relational, varExpr, token, criteriaExpr);
//critera ok: add it to WHERE section
if (whereExpr)
whereExpr = new KexiDB::BinaryExpr(KexiDBExpr_Logical, whereExpr, AND, criteriaExpr);
else //first expr.
whereExpr = criteriaExpr;
}
if (tableName.isEmpty()) {
if ((*set)["isExpression"].value().toBool()==true) {
//add expression column
int dummyToken;
KexiDB::BaseExpr *columnExpr = parseExpressionString(fieldName, dummyToken,
false/*!allowRelationalOperator*/);
if (!columnExpr) {
if (errMsg)
*errMsg = i18n("Invalid expression \"%1\"").arg(fieldName);
return false;
}
temp->query()->addExpression(columnExpr, fieldVisible);
if (fieldVisible)
fieldsFound = true;
if (!alias.isEmpty())
temp->query()->setColumnAlias( temp->query()->fieldCount()-1, alias );
}
//TODO
}
else if (tableName=="*") {
//all tables asterisk
temp->query()->addAsterisk( new KexiDB::QueryAsterisk( temp->query(), 0 ), fieldVisible );
if (fieldVisible)
fieldsFound = true;
continue;
}
else {
KexiDB::TableSchema *t = d->conn->tableSchema(tableName);
if (fieldName=="*") {
//single-table asterisk: <tablename> + ".*" + number
temp->query()->addAsterisk( new KexiDB::QueryAsterisk( temp->query(), t ), fieldVisible );
if (fieldVisible)
fieldsFound = true;
} else {
if (!t) {
kexipluginswarn << "query designer: NO TABLE '"
<< (*set)["table"].value().toString() << "'" << endl;
continue;
}
currentField = t->field( fieldName );
if (!currentField) {
kexipluginswarn << "query designer: NO FIELD '" << fieldName << "'" << endl;
continue;
}
if (!fieldVisible && criteriaStr.isEmpty() && (*set)["isExpression"]
&& (*set)["sorting"].value().toString()!="nosorting")
{
kexipluginsdbg << "invisible field with sorting: do not add it to the fields list" << endl;
continue;
}
temp->query()->addField(currentField, fieldVisible);
currentColumn = temp->query()->expandedOrInternalField(
temp->query()->fieldsExpanded().count() - 1 );
if (fieldVisible)
fieldsFound = true;
if (!alias.isEmpty())
temp->query()->setColumnAlias( temp->query()->fieldCount()-1, alias );
}
}
}
else {//!set
kexipluginsdbg << it.current()->at(COLUMN_ID_TABLE).toString() << endl;
}
}
if (!fieldsFound) {
if (errMsg)
*errMsg = msgCannotSwitch_EmptyDesign();
return false;
}
if (whereExpr)
kexipluginsdbg << "KexiQueryDesignerGuiEditor::buildSchema(): setting CRITERIA: "
<< whereExpr->debugString() << endl;
//set always, because if whereExpr==NULL,
//this will clear prev. expr
temp->query()->setWhereExpression( whereExpr );
//add relations (looking for connections)
for (ConnectionListIterator it(*d->relations->connections()); it.current(); ++it) {
KexiRelationViewTableContainer *masterTable = it.current()->masterTable();
KexiRelationViewTableContainer *detailsTable = it.current()->detailsTable();
/*! @todo what about query? */
temp->query()->addRelationship(
masterTable->schema()->table()->field(it.current()->masterField()),
detailsTable->schema()->table()->field(it.current()->detailsField()) );
}
// Add sorting information (ORDER BY) - we can do that only now
// after all QueryColumnInfo items are instantiated
KexiDB::OrderByColumnList orderByColumns;
it = d->data->iterator();
int fieldNumber = -1; //field number (empty rows are omitted)
for (uint i=0/*row number*/; i<count && it.current(); ++it, i++) {
KoProperty::Set *set = d->sets->at(i);
if (!set)
continue;
fieldNumber++;
KexiDB::Field *currentField = 0;
KexiDB::QueryColumnInfo *currentColumn = 0;
TQString sortingString( (*set)["sorting"].value().toString() );
if (sortingString!="ascending" && sortingString!="descending")
continue;
if (!(*set)["visible"].value().toBool()) {
// this row defines invisible field but contains sorting information,
// what means KexiDB::Field should be used as a reference for this sorting
// Note1: alias is not supported here.
// Try to find a field (not mentioned after SELECT):
currentField = temp->query()->findTableField( (*set)["field"].value().toString() );
if (!currentField) {
kexipluginswarn << "KexiQueryDesignerGuiEditor::buildSchema(): NO FIELD '"
<< (*set)["field"].value().toString()
<< " available for sorting" << endl;
continue;
}
orderByColumns.appendField(*currentField, sortingString=="ascending");
continue;
}
currentField = temp->query()->field( (uint)fieldNumber );
if (!currentField || currentField->isExpression() || currentField->isQueryAsterisk())
//! @todo support expressions here
continue;
//! @todo ok, but not for expressions
TQString aliasString( (*set)["alias"].value().toString() );
currentColumn = temp->query()->columnInfo(
(*set)["table"].value().toString() + "."
+ (aliasString.isEmpty() ? currentField->name() : aliasString) );
if (currentField && currentColumn) {
if (currentColumn->visible)
orderByColumns.appendColumn(*currentColumn, sortingString=="ascending");
else if (currentColumn->field)
orderByColumns.appendField(*currentColumn->field, sortingString=="ascending");
}
}
temp->query()->setOrderByColumnList( orderByColumns );
temp->query()->debug();
temp->registerTableSchemaChanges(temp->query());
//TODO?
return true;
}
tristate
KexiQueryDesignerGuiEditor::beforeSwitchTo(int mode, bool &dontStore)
{
kexipluginsdbg << "KexiQueryDesignerGuiEditor::beforeSwitch()" << mode << endl;
if (!d->dataTable->dataAwareObject()->acceptRowEdit())
return cancelled;
if (mode==Kexi::DesignViewMode) {
return true;
}
else if (mode==Kexi::DataViewMode) {
// if (!d->dataTable->dataAwareObject()->acceptRowEdit())
// return cancelled;
if (!dirty() && parentDialog()->neverSaved()) {
KMessageBox::information(this, msgCannotSwitch_EmptyDesign());
return cancelled;
}
if (dirty() || !tempData()->query()) {
//remember current design in a temporary structure
dontStore=true;
TQString errMsg;
//build schema; problems are not allowed
if (!buildSchema(&errMsg)) {
KMessageBox::sorry(this, errMsg);
return cancelled;
}
}
//TODO
return true;
}
else if (mode==Kexi::TextViewMode) {
dontStore=true;
//build schema; ignore problems
buildSchema();
/* if (tempData()->query && tempData()->query->fieldCount()==0) {
//no fields selected: let's add "*" (all-tables asterisk),
// otherwise SQL statement will be invalid
tempData()->query->addAsterisk( new KexiDB::QueryAsterisk( tempData()->query ) );
}*/
//todo
return true;
}
return false;
}
tristate
KexiQueryDesignerGuiEditor::afterSwitchFrom(int mode)
{
const bool was_dirty = dirty();
KexiDB::Connection *conn = parentDialog()->mainWin()->project()->dbConnection();
if (mode==Kexi::NoViewMode || (mode==Kexi::DataViewMode && !tempData()->query())) {
//this is not a SWITCH but a fresh opening in this view mode
if (!m_dialog->neverSaved()) {
if (!loadLayout()) {
//err msg
parentDialog()->setStatus(conn,
i18n("Query definition loading failed."),
i18n("Query design may be corrupted so it could not be opened even in text view.\n"
"You can delete the query and create it again."));
return false;
}
// Invalid queries case:
// KexiDialogBase::switchToViewMode() first opens DesignViewMode,
// and then KexiQueryPart::loadSchemaData() doesn't allocate QuerySchema object
// do we're carefully looking at parentDialog()->schemaData()
KexiDB::QuerySchema * q = dynamic_cast<KexiDB::QuerySchema *>(parentDialog()->schemaData());
if (q) {
KexiDB::ResultInfo result;
showFieldsForQuery( q, result );
if (!result.success) {
parentDialog()->setStatus(&result, i18n("Query definition loading failed."));
tempData()->proposeOpeningInTextViewModeBecauseOfProblems = true;
return false;
}
}
//! @todo load global query properties
}
}
else if (mode==Kexi::TextViewMode || mode==Kexi::DataViewMode) {
// Switch from text or data view. In the second case, the design could be changed as well
// because there could be changes made in the text view before switching to the data view.
if (tempData()->queryChangedInPreviousView) {
//previous view changed query data
//-clear and regenerate GUI items
initTableRows();
//todo
if (tempData()->query()) {
//there is a query schema to show
showTablesForQuery( tempData()->query() );
//-show fields
KexiDB::ResultInfo result;
showFieldsAndRelationsForQuery( tempData()->query(), result );
if (!result.success) {
parentDialog()->setStatus(&result, i18n("Query definition loading failed."));
return false;
}
}
else {
d->relations->clear();
}
}
//! @todo load global query properties
}
if (mode==Kexi::DataViewMode) {
//this is just a SWITCH from data view
//set cursor if needed:
if (d->dataTable->dataAwareObject()->currentRow()<0
|| d->dataTable->dataAwareObject()->currentColumn()<0)
{
d->dataTable->dataAwareObject()->ensureCellVisible(0,0);
d->dataTable->dataAwareObject()->setCursorPosition(0,0);
}
}
tempData()->queryChangedInPreviousView = false;
setFocus(); //to allow shared actions proper update
if (!was_dirty)
setDirty(false);
return true;
}
KexiDB::SchemaData*
KexiQueryDesignerGuiEditor::storeNewData(const KexiDB::SchemaData& sdata, bool &cancel)
{
if (!d->dataTable->dataAwareObject()->acceptRowEdit()) {
cancel = true;
return 0;
}
TQString errMsg;
KexiQueryPart::TempData * temp = tempData();
if (!temp->query() || !(viewMode()==Kexi::DesignViewMode && !temp->queryChangedInPreviousView)) {
//only rebuild schema if it has not been rebuilt previously
if (!buildSchema(&errMsg)) {
KMessageBox::sorry(this, errMsg);
cancel = true;
return 0;
}
}
(KexiDB::SchemaData&)*temp->query() = sdata; //copy main attributes
bool ok = m_mainWin->project()->dbConnection()->storeObjectSchemaData( *temp->query(), true /*newObject*/ );
m_dialog->setId( temp->query()->id() );
if (ok)
ok = storeLayout();
// temp->query = 0; //will be returned, so: don't keep it
if (!ok) {
temp->setQuery( 0 );
// delete query;
return 0;
}
return temp->takeQuery(); //will be returned, so: don't keep it in temp
}
tristate KexiQueryDesignerGuiEditor::storeData(bool dontAsk)
{
if (!d->dataTable->dataAwareObject()->acceptRowEdit())
return cancelled;
const bool was_dirty = dirty();
tristate res = KexiViewBase::storeData(dontAsk); //this clears dirty flag
if (true == res)
res = buildSchema();
if (true == res)
res = storeLayout();
if (true != res) {
if (was_dirty)
setDirty(true);
}
return res;
}
void KexiQueryDesignerGuiEditor::showTablesForQuery(KexiDB::QuerySchema *query)
{
//replaced by code below that preserves geometries d->relations->clear();
// instead of hiding all tables and showing some tables,
// show only these new and hide these unncecessary; the same for connections)
d->slotTableAdded_enabled = false; //speedup
d->relations->removeAllConnections(); //connections will be recreated
d->relations->hideAllTablesExcept( query->tables() );
for (KexiDB::TableSchema::ListIterator it(*query->tables()); it.current(); ++it) {
d->relations->addTable( it.current() );
}
d->slotTableAdded_enabled = true;
updateColumnsData();
}
void KexiQueryDesignerGuiEditor::addConnection(
KexiDB::Field *masterField, KexiDB::Field *detailsField)
{
SourceConnection conn;
conn.masterTable = masterField->table()->name(); //<<<TODO
conn.masterField = masterField->name();
conn.detailsTable = detailsField->table()->name();
conn.detailsField = detailsField->name();
d->relations->addConnection( conn );
}
void KexiQueryDesignerGuiEditor::showFieldsForQuery(KexiDB::QuerySchema *query, KexiDB::ResultInfo& result)
{
showFieldsOrRelationsForQueryInternal(query, true, false, result);
}
void KexiQueryDesignerGuiEditor::showRelationsForQuery(KexiDB::QuerySchema *query, KexiDB::ResultInfo& result)
{
showFieldsOrRelationsForQueryInternal(query, false, true, result);
}
void KexiQueryDesignerGuiEditor::showFieldsAndRelationsForQuery(KexiDB::QuerySchema *query,
KexiDB::ResultInfo& result)
{
showFieldsOrRelationsForQueryInternal(query, true, true, result);
}
void KexiQueryDesignerGuiEditor::showFieldsOrRelationsForQueryInternal(
KexiDB::QuerySchema *query, bool showFields, bool showRelations, KexiDB::ResultInfo& result)
{
result.clear();
const bool was_dirty = dirty();
//1. Show explicitly declared relations:
if (showRelations) {
KexiDB::Relationship *rel;
for (KexiDB::Relationship::ListIterator it(*query->relationships());
(rel=it.current()); ++it)
{
//! @todo: now only sigle-field relationships are implemented!
KexiDB::Field *masterField = rel->masterIndex()->fields()->first();
KexiDB::Field *detailsField = rel->detailsIndex()->fields()->first();
addConnection(masterField, detailsField);
}
}
//2. Collect information about criterias
// --this must be top level chain of AND's
// --this will also show joins as: [table1.]field1 = [table2.]field2
TQDict<KexiDB::BaseExpr> criterias(1009, false);
KexiDB::BaseExpr* e = query->whereExpression();
KexiDB::BaseExpr* eItem = 0;
while (e) {
//eat parentheses because the expression can be (....) AND (... AND ... )
while (e && e->toUnary() && e->token()=='(')
e = e->toUnary()->arg();
if (e->toBinary() && e->token()==AND) {
eItem = e->toBinary()->left();
e = e->toBinary()->right();
}
else {
eItem = e;
e = 0;
}
//eat parentheses
while (eItem && eItem->toUnary() && eItem->token()=='(')
eItem = eItem->toUnary()->arg();
if (!eItem)
continue;
kexidbg << eItem->toString() << endl;
KexiDB::BinaryExpr* binary = eItem->toBinary();
if (binary && eItem->exprClass()==KexiDBExpr_Relational) {
KexiDB::Field *leftField = 0, *rightField = 0;
if (eItem->token()=='='
&& binary->left()->toVariable()
&& binary->right()->toVariable()
&& (leftField = query->findTableField( binary->left()->toString() ))
&& (rightField = query->findTableField( binary->right()->toString() )))
{
//! @todo move this check to parser on QuerySchema creation
//! or to QuerySchema creation (WHERE expression should be then simplified
//! by removing joins
//this is relationship defined as following JOIN: [table1.]field1 = [table2.]field2
if (showRelations) {
//! @todo testing primary key here is too simplified; maybe look ar isForeignKey() or indices..
//! @todo what about multifield joins?
if (leftField->isPrimaryKey())
addConnection(leftField /*master*/, rightField /*details*/);
else
addConnection(rightField /*master*/, leftField /*details*/);
//! @todo addConnection() should have "bool oneToOne" arg, for 1-to-1 relations
}
}
else if (binary->left()->toVariable()) {
//this is: variable , op , argument
//store variable -> argument:
criterias.insert(binary->left()->toVariable()->name, binary->right());
}
else if (binary->right()->toVariable()) {
//this is: argument , op , variable
//store variable -> argument:
criterias.insert(binary->right()->toVariable()->name, binary->left());
}
}
} //while
if (!showFields)
return;
//3. show fields (including * and table.*)
uint row_num = 0;
KexiDB::Field *field;
TQPtrDict<char> usedCriterias(1009); // <-- used criterias will be saved here
// so in step 4. we will be able to add
// remaining invisible columns with criterias
for (KexiDB::Field::ListIterator it(*query->fields());
(field = it.current()); ++it, row_num++)
{
//append a new row
TQString tableName, fieldName, columnAlias, criteriaString;
KexiDB::BinaryExpr *criteriaExpr = 0;
KexiDB::BaseExpr *criteriaArgument = 0;
if (field->isQueryAsterisk()) {
if (field->table()) {//single-table asterisk
tableName = field->table()->name();
fieldName = "*";
}
else {//all-tables asterisk
tableName = "*";
fieldName = "";
}
}
else {
columnAlias = query->columnAlias(row_num);
if (field->isExpression()) {
// if (columnAlias.isEmpty()) {
// columnAlias = i18n("expression", "expr%1").arg(row_num); //TODO
// }
// if (columnAlias.isEmpty())
//TODO: ok? perhaps do not allow to omit aliases?
fieldName = field->expression()->toString();
// else
// fieldName = columnAlias + ": " + field->expression()->toString();
}
else {
tableName = field->table()->name();
fieldName = field->name();
criteriaArgument = criterias[fieldName];
if (!criteriaArgument) {//try table.field
criteriaArgument = criterias[tableName+"."+fieldName];
}
if (criteriaArgument) {//criteria expression is just a parent of argument
criteriaExpr = criteriaArgument->parent()->toBinary();
usedCriterias.insert(criteriaArgument, (char*)1); //save info. about used criteria
}
}
}
//create new row data
KexiTableItem *newItem = createNewRow(tableName, fieldName, true /* visible*/);
if (criteriaExpr) {
//! @todo fix for !INFIX operators
if (criteriaExpr->token()=='=')
criteriaString = criteriaArgument->toString();
else
criteriaString = criteriaExpr->tokenToString() + " " + criteriaArgument->toString();
(*newItem)[COLUMN_ID_CRITERIA] = criteriaString;
}
d->dataTable->dataAwareObject()->insertItem(newItem, row_num);
//OK, row inserted: create a new set for it
KoProperty::Set &set = *createPropertySet( row_num, tableName, fieldName, true/*new one*/ );
if (!columnAlias.isEmpty())
set["alias"].setValue(columnAlias, false);
if (!criteriaString.isEmpty())
set["criteria"].setValue( criteriaString, false );
if (field->isExpression()) {
// (*newItem)[COLUMN_ID_COLUMN] = ;
if (!d->changeSingleCellValue(*newItem, COLUMN_ID_COLUMN,
TQVariant(columnAlias + ": " + field->expression()->toString()), &result))
return; //problems with setting column expression
}
}
//4. show ORDER BY information
d->data->clearRowEditBuffer();
KexiDB::OrderByColumnList &orderByColumns = query->orderByColumnList();
TQMap<KexiDB::QueryColumnInfo*,int> columnsOrder(
query->columnsOrder(KexiDB::QuerySchema::UnexpandedListWithoutAsterisks) );
for (KexiDB::OrderByColumn::ListConstIterator orderByColumnsIt( orderByColumns.constBegin() );
orderByColumnsIt!=orderByColumns.constEnd(); ++orderByColumnsIt)
{
KexiDB::QueryColumnInfo *column = (*orderByColumnsIt).column();
KexiTableItem *rowItem = 0;
KoProperty::Set *rowPropertySet = 0;
if (column) {
//sorting for visible column
if (column->visible) {
if (columnsOrder.contains(column)) {
const int columnPosition = columnsOrder[ column ];
rowItem = d->data->at( columnPosition );
rowPropertySet = d->sets->at( columnPosition );
kexipluginsdbg << "KexiQueryDesignerGuiEditor::showFieldsOrRelationsForQueryInternal():\n\t"
"Setting \"" << (*orderByColumnsIt).debugString() << "\" sorting for row #"
<< columnPosition << endl;
}
}
}
else if ((*orderByColumnsIt).field()) {
//this will be presented as invisible field: create new row
field = (*orderByColumnsIt).field();
TQString tableName( field->table() ? field->table()->name() : TQString() );
rowItem = createNewRow( tableName, field->name(), false /* !visible*/);
d->dataTable->dataAwareObject()->insertItem(rowItem, row_num);
rowPropertySet = createPropertySet( row_num, tableName, field->name(), true /*newOne*/ );
propertySetSwitched();
kexipluginsdbg << "KexiQueryDesignerGuiEditor::showFieldsOrRelationsForQueryInternal():\n\t"
"Setting \"" << (*orderByColumnsIt).debugString() << "\" sorting for invisible field "
<< field->name() << ", table " << tableName << " -row #" << row_num << endl;
row_num++;
}
//alter sorting for either existing or new row
if (rowItem && rowPropertySet) {
d->data->updateRowEditBuffer(rowItem, COLUMN_ID_SORTING,
(*orderByColumnsIt).ascending() ? 1 : 2); // this will automatically update "sorting" property
// in slotBeforeCellChanged()
d->data->saveRowChanges(*rowItem, true);
(*rowPropertySet)["sorting"].clearModifiedFlag(); // this property should look "fresh"
if (!rowItem->at(COLUMN_ID_VISIBLE).toBool()) //update
(*rowPropertySet)["visible"].setValue(TQVariant(false), false/*rememberOldValue*/);
}
}
//5. Show fields for unused criterias (with "Visible" column set to false)
KexiDB::BaseExpr *criteriaArgument; // <-- contains field or table.field
for (TQDictIterator<KexiDB::BaseExpr> it(criterias); (criteriaArgument = it.current()); ++it) {
if (usedCriterias[it.current()])
continue;
//unused: append a new row
KexiDB::BinaryExpr *criteriaExpr = criteriaArgument->parent()->toBinary();
if (!criteriaExpr) {
kexipluginswarn << "KexiQueryDesignerGuiEditor::showFieldsOrRelationsForQueryInternal(): "
"criteriaExpr is not a binary expr" << endl;
continue;
}
KexiDB::VariableExpr *columnNameArgument = criteriaExpr->left()->toVariable(); //left or right
if (!columnNameArgument) {
columnNameArgument = criteriaExpr->right()->toVariable();
if (!columnNameArgument) {
kexipluginswarn << "KexiQueryDesignerGuiEditor::showFieldsOrRelationsForQueryInternal(): "
"columnNameArgument is not a variable (table or table.field) expr" << endl;
continue;
}
}
KexiDB::Field* field = 0;
if (-1 == columnNameArgument->name.find('.') && query->tables()->count()==1) {
//extreme case: only field name provided for one-table query:
field = query->tables()->first()->field(columnNameArgument->name);
}
else {
field = query->findTableField(columnNameArgument->name);
}
if (!field) {
kexipluginswarn << "KexiQueryDesignerGuiEditor::showFieldsOrRelationsForQueryInternal(): "
"no columnInfo found in the query for name \"" << columnNameArgument->name << endl;
continue;
}
TQString tableName, fieldName, columnAlias, criteriaString;
//! @todo what about ALIAS?
tableName = field->table()->name();
fieldName = field->name();
//create new row data
KexiTableItem *newItem = createNewRow(tableName, fieldName, false /* !visible*/);
if (criteriaExpr) {
//! @todo fix for !INFIX operators
if (criteriaExpr->token()=='=')
criteriaString = criteriaArgument->toString();
else
criteriaString = criteriaExpr->tokenToString() + " " + criteriaArgument->toString();
(*newItem)[COLUMN_ID_CRITERIA] = criteriaString;
}
d->dataTable->dataAwareObject()->insertItem(newItem, row_num);
//OK, row inserted: create a new set for it
KoProperty::Set &set = *createPropertySet( row_num++, tableName, fieldName, true/*new one*/ );
//! @todo if (!columnAlias.isEmpty())
//! @todo set["alias"].setValue(columnAlias, false);
//// if (!criteriaString.isEmpty())
set["criteria"].setValue( criteriaString, false );
set["visible"].setValue( TQVariant(false), false );
}
//current property set has most probably changed
propertySetSwitched();
if (!was_dirty)
setDirty(false);
//move to 1st column, 1st row
d->dataTable->dataAwareObject()->ensureCellVisible(0,0);
// tempData()->registerTableSchemaChanges(query);
}
bool KexiQueryDesignerGuiEditor::loadLayout()
{
TQString xml;
// if (!loadDataBlock( xml, "query_layout" )) {
loadDataBlock( xml, "query_layout" );
//TODO errmsg
// return false;
// }
if (xml.isEmpty()) {
//in a case when query layout was not saved, build layout by hand
// -- dynamic cast because of a need for handling invalid queries
// (as in KexiQueryDesignerGuiEditor::afterSwitchFrom()):
KexiDB::QuerySchema * q = dynamic_cast<KexiDB::QuerySchema *>(parentDialog()->schemaData());
if (q) {
showTablesForQuery( q );
KexiDB::ResultInfo result;
showRelationsForQuery( q, result );
if (!result.success) {
parentDialog()->setStatus(&result, i18n("Query definition loading failed."));
return false;
}
}
return true;
}
TQDomDocument doc;
doc.setContent(xml);
TQDomElement doc_el = doc.documentElement(), el;
if (doc_el.tagName()!="query_layout") {
//TODO errmsg
return false;
}
const bool was_dirty = dirty();
//add tables and relations to the relation view
for (el = doc_el.firstChild().toElement(); !el.isNull(); el=el.nextSibling().toElement()) {
if (el.tagName()=="table") {
KexiDB::TableSchema *t = d->conn->tableSchema(el.attribute("name"));
int x = el.attribute("x","-1").toInt();
int y = el.attribute("y","-1").toInt();
int width = el.attribute("width","-1").toInt();
int height = el.attribute("height","-1").toInt();
TQRect rect;
if (x!=-1 || y!=-1 || width!=-1 || height!=-1)
rect = TQRect(x,y,width,height);
d->relations->addTable( t, rect );
}
else if (el.tagName()=="conn") {
SourceConnection src_conn;
src_conn.masterTable = el.attribute("mtable");
src_conn.masterField = el.attribute("mfield");
src_conn.detailsTable = el.attribute("dtable");
src_conn.detailsField = el.attribute("dfield");
d->relations->addConnection(src_conn);
}
}
if (!was_dirty)
setDirty(false);
return true;
}
bool KexiQueryDesignerGuiEditor::storeLayout()
{
KexiQueryPart::TempData * temp = tempData();
// Save SQL without driver-escaped keywords.
KexiDB::Connection* dbConn = mainWin()->project()->dbConnection();
if (m_dialog->schemaData()) //set this instance as obsolete (only if it's stored)
dbConn->setQuerySchemaObsolete( m_dialog->schemaData()->name() );
KexiDB::Connection::SelectStatementOptions options;
options.identifierEscaping = KexiDB::Driver::EscapeKexi|KexiDB::Driver::EscapeAsNecessary;
options.addVisibleLookupColumns = false;
TQString sqlText = dbConn->selectStatement( *temp->query(), options );
if (!storeDataBlock( sqlText, "sql" )) {
return false;
}
//serialize detailed XML query definition
TQString xml = "<query_layout>", tmp;
for (TablesDictIterator it(*d->relations->tables()); it.current(); ++it) {
KexiRelationViewTableContainer *table_cont = it.current();
/*! @todo what about query? */
tmp = TQString("<table name=\"")+TQString(table_cont->schema()->name())+"\" x=\""
+TQString::number(table_cont->x())
+"\" y=\""+TQString::number(table_cont->y())
+"\" width=\""+TQString::number(table_cont->width())
+"\" height=\""+TQString::number(table_cont->height())
+"\"/>";
xml += tmp;
}
KexiRelationViewConnection *con;
for (ConnectionListIterator it(*d->relations->connections()); (con = it.current()); ++it) {
tmp = TQString("<conn mtable=\"") + TQString(con->masterTable()->schema()->name())
+ "\" mfield=\"" + con->masterField() + "\" dtable=\""
+ TQString(con->detailsTable()->schema()->name())
+ "\" dfield=\"" + con->detailsField() + "\"/>";
xml += tmp;
}
xml += "</query_layout>";
if (!storeDataBlock( xml, "query_layout" )) {
return false;
}
// mainWin()->project()->reloadPartItem( m_dialog );
return true;
}
TQSize KexiQueryDesignerGuiEditor::sizeHint() const
{
TQSize s1 = d->relations->sizeHint();
TQSize s2 = d->head->sizeHint();
return TQSize(TQMAX(s1.width(),s2.width()), s1.height()+s2.height());
}
KexiTableItem*
KexiQueryDesignerGuiEditor::createNewRow(const TQString& tableName, const TQString& fieldName,
bool visible) const
{
KexiTableItem *newItem = d->data->createItem();
TQString key;
if (tableName=="*")
key="*";
else {
if (!tableName.isEmpty())
key = (tableName+".");
key += fieldName;
}
(*newItem)[COLUMN_ID_COLUMN]=key;
(*newItem)[COLUMN_ID_TABLE]=tableName;
(*newItem)[COLUMN_ID_VISIBLE]=TQVariant(visible);
#ifndef KEXI_NO_QUERY_TOTALS
(*newItem)[COLUMN_ID_TOTALS]=TQVariant(0);
#endif
return newItem;
}
void KexiQueryDesignerGuiEditor::slotDragOverTableRow(
KexiTableItem * /*item*/, int /*row*/, TQDragMoveEvent* e)
{
if (e->provides("kexi/field")) {
e->acceptAction(true);
}
}
void
KexiQueryDesignerGuiEditor::slotDroppedAtRow(KexiTableItem * /*item*/, int /*row*/,
TQDropEvent *ev, KexiTableItem*& newItem)
{
TQString sourceMimeType;
TQString srcTable;
TQString srcField;
if (!KexiFieldDrag::decodeSingle(ev,sourceMimeType,srcTable,srcField))
return;
//insert new row at specific place
newItem = createNewRow(srcTable, srcField, true /* visible*/);
d->droppedNewItem = newItem;
d->droppedNewTable = srcTable;
d->droppedNewField = srcField;
//TODO
}
void KexiQueryDesignerGuiEditor::slotNewItemAppendedForAfterDeletingInSpreadSheetMode()
{
KexiTableItem *item = d->data->last();
if (item)
item->at(COLUMN_ID_VISIBLE) = TQVariant(false); //the same init as in initTableRows()
}
void KexiQueryDesignerGuiEditor::slotRowInserted(KexiTableItem* item, uint row, bool /*repaint*/)
{
if (d->droppedNewItem && d->droppedNewItem==item) {
createPropertySet( row, d->droppedNewTable, d->droppedNewField, true );
propertySetSwitched();
d->droppedNewItem=0;
}
}
void KexiQueryDesignerGuiEditor::slotTableAdded(KexiDB::TableSchema & /*t*/)
{
if (!d->slotTableAdded_enabled)
return;
updateColumnsData();
setDirty();
d->dataTable->setFocus();
}
void KexiQueryDesignerGuiEditor::slotTableHidden(KexiDB::TableSchema & /*t*/)
{
updateColumnsData();
setDirty();
}
/*! @internal generates smallest unique alias */
TQCString KexiQueryDesignerGuiEditor::generateUniqueAlias() const
{
//TODO: add option for using non-i18n'd "expr" prefix?
const TQCString expStr
= i18n("short for 'expression' word (only latin letters, please)", "expr").latin1();
//TODO: optimization: cache it?
TQAsciiDict<char> aliases(1009);
for (int r = 0; r<(int)d->sets->size(); r++) {
KoProperty::Set *set = d->sets->at(r);
if (set) {
const TQCString a = (*set)["alias"].value().toCString().lower();
if (!a.isEmpty())
aliases.insert(a,(char*)1);
}
}
int aliasNr=1;
for (;;aliasNr++) {
if (!aliases[expStr+TQString::number(aliasNr).latin1()])
break;
}
return expStr+TQString::number(aliasNr).latin1();
}
//! @todo this is primitive, temporary: reuse SQL parser
KexiDB::BaseExpr*
KexiQueryDesignerGuiEditor::parseExpressionString(const TQString& fullString, int& token,
bool allowRelationalOperator)
{
TQString str = fullString.stripWhiteSpace();
int len = 0;
//KexiDB::BaseExpr *expr = 0;
//1. get token
token = 0;
//2-char-long tokens
if (str.startsWith(">="))
token = GREATER_OR_EQUAL;
else if (str.startsWith("<="))
token = LESS_OR_EQUAL;
else if (str.startsWith("<>"))
token = NOT_EQUAL;
else if (str.startsWith("!="))
token = NOT_EQUAL2;
else if (str.startsWith("=="))
token = '=';
if (token!=0)
len = 2;
else if (str.startsWith("=") //1-char-long tokens
|| str.startsWith("<")
|| str.startsWith(">"))
{
token = str[0].latin1();
len = 1;
}
else {
if (allowRelationalOperator)
token = '=';
}
if (!allowRelationalOperator && token!=0)
return 0;
//1. get expression after token
if (len>0)
str = str.mid(len).stripWhiteSpace();
if (str.isEmpty())
return 0;
KexiDB::BaseExpr *valueExpr = 0;
TQRegExp re;
if (str.length()>=2 &&
(
(str.startsWith("\"") && str.endsWith("\""))
|| (str.startsWith("'") && str.endsWith("'")))
)
{
valueExpr = new KexiDB::ConstExpr(CHARACTER_STRING_LITERAL, str.mid(1,str.length()-2));
}
else if (str.startsWith("[") && str.endsWith("]")) {
valueExpr = new KexiDB::QueryParameterExpr(str.mid(1,str.length()-2));
}
else if ((re = TQRegExp("(\\d{1,4})-(\\d{1,2})-(\\d{1,2})")).exactMatch( str ))
{
valueExpr = new KexiDB::ConstExpr(DATE_CONST, TQDate::fromString(
re.cap(1).rightJustify(4, '0')+"-"+re.cap(2).rightJustify(2, '0')
+"-"+re.cap(3).rightJustify(2, '0'), TQt::ISODate));
}
else if ((re = TQRegExp("(\\d{1,2}):(\\d{1,2})")).exactMatch( str )
|| (re = TQRegExp("(\\d{1,2}):(\\d{1,2}):(\\d{1,2})")).exactMatch( str ))
{
TQString res = re.cap(1).rightJustify(2, '0')+":"+re.cap(2).rightJustify(2, '0')
+":"+re.cap(3).rightJustify(2, '0');
// kexipluginsdbg << res << endl;
valueExpr = new KexiDB::ConstExpr(TIME_CONST, TQTime::fromString(res, TQt::ISODate));
}
else if ((re = TQRegExp("(\\d{1,4})-(\\d{1,2})-(\\d{1,2})\\s+(\\d{1,2}):(\\d{1,2})")).exactMatch( str )
|| (re = TQRegExp("(\\d{1,4})-(\\d{1,2})-(\\d{1,2})\\s+(\\d{1,2}):(\\d{1,2}):(\\d{1,2})")).exactMatch( str ))
{
TQString res = re.cap(1).rightJustify(4, '0')+"-"+re.cap(2).rightJustify(2, '0')
+"-"+re.cap(3).rightJustify(2, '0')
+"T"+re.cap(4).rightJustify(2, '0')+":"+re.cap(5).rightJustify(2, '0')
+":"+re.cap(6).rightJustify(2, '0');
// kexipluginsdbg << res << endl;
valueExpr = new KexiDB::ConstExpr(DATETIME_CONST,
TQDateTime::fromString(res, TQt::ISODate));
}
else if (str[0]>='0' && str[0]<='9' || str[0]=='-' || str[0]=='+') {
//number
TQString decimalSym = TDEGlobal::locale()->decimalSymbol();
bool ok;
int pos = str.find('.');
if (pos==-1) {//second chance: local decimal symbol
pos = str.find(decimalSym);
}
if (pos>=0) {//real const number
const int left = str.left(pos).toInt(&ok);
if (!ok)
return 0;
const int right = str.mid(pos+1).toInt(&ok);
if (!ok)
return 0;
valueExpr = new KexiDB::ConstExpr(REAL_CONST, TQPoint(left,right)); //decoded to TQPoint
}
else {
//integer const
const TQ_LLONG val = str.toLongLong(&ok);
if (!ok)
return 0;
valueExpr = new KexiDB::ConstExpr(INTEGER_CONST, val);
}
}
else if (str.lower()=="null") {
valueExpr = new KexiDB::ConstExpr(SQL_NULL, TQVariant());
}
else {//identfier
if (!KexiUtils::isIdentifier(str))
return 0;
valueExpr = new KexiDB::VariableExpr(str);
//find first matching field for name 'str':
for (TablesDictIterator it(*d->relations->tables()); it.current(); ++it) {
/*! @todo what about query? */
if (it.current()->schema()->table() && it.current()->schema()->table()->field(str)) {
valueExpr->toVariable()->field = it.current()->schema()->table()->field(str);
break;
}
}
}
return valueExpr;
}
void KexiQueryDesignerGuiEditor::slotBeforeCellChanged(KexiTableItem *item, int colnum,
TQVariant& newValue, KexiDB::ResultInfo* result)
{
if (colnum == COLUMN_ID_COLUMN) {
if (newValue.isNull()) {
d->data->updateRowEditBuffer(item, COLUMN_ID_TABLE, TQVariant(), false/*!allowSignals*/);
d->data->updateRowEditBuffer(item, COLUMN_ID_VISIBLE, TQVariant(false));//invisible
d->data->updateRowEditBuffer(item, COLUMN_ID_SORTING, TQVariant());
#ifndef KEXI_NO_QUERY_TOTALS
d->data->updateRowEditBuffer(item, COLUMN_ID_TOTALS, TQVariant());//remove totals
#endif
d->data->updateRowEditBuffer(item, COLUMN_ID_CRITERIA, TQVariant());//remove crit.
d->sets->removeCurrentPropertySet();
}
else {
//auto fill 'table' column
TQString fieldId( newValue.toString().stripWhiteSpace() ); //tmp, can look like "table.field"
TQString fieldName; //"field" part of "table.field" or expression string
TQString tableName; //empty for expressions
TQCString alias;
TQString columnValueForExpr; //for setting pretty printed "alias: expr" in 1st column
const bool isExpression = !d->fieldColumnIdentifiers[fieldId];
if (isExpression) {
//this value is entered by hand and doesn't match
//any value in the combo box -- we're assuming this is an expression
//-table remains null
//-find "alias" in something like "alias : expr"
const int id = fieldId.find(':');
if (id>0) {
alias = fieldId.left(id).stripWhiteSpace().latin1();
if (!KexiUtils::isIdentifier(alias)) {
result->success = false;
result->allowToDiscardChanges = true;
result->column = colnum;
result->msg = i18n("Entered column alias \"%1\" is not a valid identifier.")
.arg(alias.data());
result->desc = i18n("Identifiers should start with a letter or '_' character");
return;
}
}
fieldName = fieldId.mid(id+1).stripWhiteSpace();
//check expr.
KexiDB::BaseExpr *e;
int dummyToken;
if ((e = parseExpressionString(fieldName, dummyToken, false/*allowRelationalOperator*/)))
{
fieldName = e->toString(); //print it prettier
//this is just checking: destroy expr. object
delete e;
}
else {
result->success = false;
result->allowToDiscardChanges = true;
result->column = colnum;
result->msg = i18n("Invalid expression \"%1\"").arg(fieldName);
return;
}
}
else {//not expr.
//this value is properly selected from combo box list
if (fieldId=="*") {
tableName = "*";
}
else {
if (!KexiDB::splitToTableAndFieldParts(
fieldId, tableName, fieldName, KexiDB::SetFieldNameIfNoTableName))
{
kexipluginswarn << "KexiQueryDesignerGuiEditor::slotBeforeCellChanged(): no 'field' or 'table.field'" << endl;
return;
}
}
}
bool saveOldValue = true;
KoProperty::Set *set = d->sets->findPropertySetForItem(*item); //*propertyBuffer();
if (!set) {
saveOldValue = false; // no old val.
const int row = d->data->findRef(item);
if (row<0) {
result->success = false;
return;
}
set = createPropertySet( row, tableName, fieldName, true );
propertySetSwitched();
}
d->data->updateRowEditBuffer(item, COLUMN_ID_TABLE, TQVariant(tableName), false/*!allowSignals*/);
d->data->updateRowEditBuffer(item, COLUMN_ID_VISIBLE, TQVariant(true));
#ifndef KEXI_NO_QUERY_TOTALS
d->data->updateRowEditBuffer(item, COLUMN_ID_TOTALS, TQVariant(0));
#endif
if (!sortingAllowed(fieldName, tableName)) {
// sorting is not available for "*" or "table.*" rows
//! @todo what about expressions?
d->data->updateRowEditBuffer(item, COLUMN_ID_SORTING, TQVariant());
}
//update properties
(*set)["field"].setValue(fieldName, saveOldValue);
if (isExpression) {
//-no alias but it's needed:
if (alias.isEmpty()) //-try oto get old alias
alias = (*set)["alias"].value().toCString();
if (alias.isEmpty()) //-generate smallest unique alias
alias = generateUniqueAlias();
}
(*set)["isExpression"].setValue(TQVariant(isExpression), saveOldValue);
if (!alias.isEmpty()) {
(*set)["alias"].setValue(alias, saveOldValue);
//pretty printed "alias: expr"
newValue = TQString(alias) + ": " + fieldName;
}
(*set)["caption"].setValue(TQString(), saveOldValue);
(*set)["table"].setValue(tableName, saveOldValue);
updatePropertiesVisibility(*set);
}
}
else if (colnum==COLUMN_ID_TABLE) {
if (newValue.isNull()) {
if (!item->at(COLUMN_ID_COLUMN).toString().isEmpty())
d->data->updateRowEditBuffer(item, COLUMN_ID_COLUMN, TQVariant(), false/*!allowSignals*/);
d->data->updateRowEditBuffer(item, COLUMN_ID_VISIBLE, TQVariant(false));//invisible
#ifndef KEXI_NO_QUERY_TOTALS
d->data->updateRowEditBuffer(item, COLUMN_ID_TOTALS, TQVariant());//remove totals
#endif
d->data->updateRowEditBuffer(item, COLUMN_ID_CRITERIA, TQVariant());//remove crit.
d->sets->removeCurrentPropertySet();
}
//update property
KoProperty::Set *set = d->sets->findPropertySetForItem(*item);
if (set) {
if ((*set)["isExpression"].value().toBool()==false) {
(*set)["table"] = newValue;
(*set)["caption"] = TQString();
}
else {
//do not set table for expr. columns
newValue = TQVariant();
}
// KoProperty::Set &set = *propertyBuffer();
updatePropertiesVisibility(*set);
}
}
else if (colnum==COLUMN_ID_VISIBLE) {
bool saveOldValue = true;
if (!propertySet()) {
saveOldValue = false;
createPropertySet( d->dataTable->dataAwareObject()->currentRow(),
item->at(COLUMN_ID_TABLE).toString(), item->at(COLUMN_ID_COLUMN).toString(), true );
#ifndef KEXI_NO_QUERY_TOTALS
d->data->updateRowEditBuffer(item, COLUMN_ID_TOTALS, TQVariant(0));//totals
#endif
propertySetSwitched();
}
KoProperty::Set &set = *propertySet();
set["visible"].setValue(newValue, saveOldValue);
}
#ifndef KEXI_NO_QUERY_TOTALS
else if (colnum==COLUMN_ID_TOTALS) {
//TODO:
//unused yet
setDirty(true);
}
#endif
else if (colnum==COLUMN_ID_SORTING) {
KoProperty::Set *set = d->sets->findPropertySetForItem(*item);
TQString table( set->property("table").value().toString() );
TQString field( set->property("field").value().toString() );
if (newValue.toInt()==0 || sortingAllowed(field, table)) {
KoProperty::Property &property = set->property("sorting");
TQString key( property.listData()->keysAsStringList()[ newValue.toInt() ] );
kexipluginsdbg << "new key=" << key << endl;
property.setValue(key, true);
}
else { //show msg: sorting is not available
result->success = false;
result->allowToDiscardChanges = true;
result->column = colnum;
result->msg = i18n("Could not set sorting for multiple columns (%1)")
.arg(table=="*" ? table : (table+".*"));
}
}
else if (colnum==COLUMN_ID_CRITERIA) {
//! @todo this is primitive, temporary: reuse SQL parser
TQString operatorStr, argStr;
KexiDB::BaseExpr* e = 0;
const TQString str = newValue.toString().stripWhiteSpace();
int token;
TQString field, table;
KoProperty::Set *set = d->sets->findPropertySetForItem(*item);
if (set) {
field = (*set)["field"].value().toString();
table = (*set)["table"].value().toString();
}
if (!str.isEmpty() && (!set || table=="*" || field.find("*")!=-1)) {
//asterisk found! criteria not allowed
result->success = false;
result->allowToDiscardChanges = true;
result->column = colnum;
if (propertySet())
result->msg = i18n("Could not set criteria for \"%1\"")
.arg(table=="*" ? table : field);
else
result->msg = i18n("Could not set criteria for empty row");
//moved to result->allowToDiscardChanges handler //d->dataTable->dataAwareObject()->cancelEditor(); //prevents further editing of this cell
}
else if (str.isEmpty() || (e = parseExpressionString(str, token, true/*allowRelationalOperator*/)))
{
if (e) {
TQString tokenStr;
if (token!='=') {
KexiDB::BinaryExpr be(KexiDBExpr_Relational, 0, token, 0);
tokenStr = be.tokenToString() + " ";
}
(*set)["criteria"] = tokenStr + e->toString(); //print it prettier
//this is just checking: destroy expr. object
delete e;
}
else if (str.isEmpty()) {
(*set)["criteria"] = TQVariant(); //clear it
}
setDirty(true);
}
else {
result->success = false;
result->allowToDiscardChanges = true;
result->column = colnum;
result->msg = i18n("Invalid criteria \"%1\"").arg(newValue.toString());
}
}
}
void KexiQueryDesignerGuiEditor::slotTablePositionChanged(KexiRelationViewTableContainer*)
{
setDirty(true);
}
void KexiQueryDesignerGuiEditor::slotAboutConnectionRemove(KexiRelationViewConnection*)
{
setDirty(true);
}
void KexiQueryDesignerGuiEditor::slotTableFieldDoubleClicked(
KexiDB::TableSchema* table, const TQString& fieldName )
{
if (!table || (!table->field(fieldName) && fieldName!="*"))
return;
int row_num;
//find last filled row in the GUI table
for (row_num=d->sets->size()-1; row_num>=0 && !d->sets->at(row_num); row_num--)
;
row_num++; //after
//add row
KexiTableItem *newItem = createNewRow(table->name(), fieldName, true /* visible*/);
d->dataTable->dataAwareObject()->insertItem(newItem, row_num);
d->dataTable->dataAwareObject()->setCursorPosition(row_num, 0);
//create buffer
createPropertySet( row_num, table->name(), fieldName, true/*new one*/ );
propertySetSwitched();
d->dataTable->setFocus();
}
KoProperty::Set *KexiQueryDesignerGuiEditor::propertySet()
{
return d->sets->currentPropertySet();
}
void KexiQueryDesignerGuiEditor::updatePropertiesVisibility(KoProperty::Set& set)
{
const bool asterisk = isAsterisk(
set["table"].value().toString(), set["field"].value().toString()
);
#ifndef KEXI_NO_UNFINISHED
set["caption"].setVisible( !asterisk );
#endif
set["alias"].setVisible( !asterisk );
/*always invisible #ifndef KEXI_NO_UNFINISHED
set["sorting"].setVisible( !asterisk );
#endif*/
propertySetReloaded(true);
}
KoProperty::Set*
KexiQueryDesignerGuiEditor::createPropertySet( int row,
const TQString& tableName, const TQString& fieldName, bool newOne )
{
//const bool asterisk = isAsterisk(tableName, fieldName);
TQString typeName = "KexiQueryDesignerGuiEditor::Column";
KoProperty::Set *set = new KoProperty::Set(d->sets, typeName);
KoProperty::Property *prop;
//meta-info for property editor
set->addProperty(prop = new KoProperty::Property("this:classString", i18n("Query column")) );
prop->setVisible(false);
//! \todo add table_field icon (add buff->addProperty(prop = new KexiProperty("this:iconName", "table_field") );
// prop->setVisible(false);
set->addProperty(prop = new KoProperty::Property("table", TQVariant(tableName)) );
prop->setVisible(false);//always hidden
set->addProperty(prop = new KoProperty::Property("field", TQVariant(fieldName)) );
prop->setVisible(false);//always hidden
set->addProperty(prop = new KoProperty::Property("caption", TQVariant(TQString()), i18n("Caption") ) );
#ifdef KEXI_NO_UNFINISHED
prop->setVisible(false);
#endif
set->addProperty(prop = new KoProperty::Property("alias", TQVariant(TQString()), i18n("Alias")) );
set->addProperty(prop = new KoProperty::Property("visible", TQVariant(true)) );
prop->setVisible(false);
/*TODO:
set->addProperty(prop = new KexiProperty("totals", TQVariant(TQString())) );
prop->setVisible(false);*/
//sorting
TQStringList slist, nlist;
slist << "nosorting" << "ascending" << "descending";
nlist << i18n("None") << i18n("Ascending") << i18n("Descending");
set->addProperty(prop = new KoProperty::Property("sorting",
slist, nlist, *slist.at(0), i18n("Sorting")));
prop->setVisible(false);
set->addProperty(prop = new KoProperty::Property("criteria", TQVariant(TQString())) );
prop->setVisible(false);
set->addProperty(prop = new KoProperty::Property("isExpression", TQVariant(false)) );
prop->setVisible(false);
connect(set, TQT_SIGNAL(propertyChanged(KoProperty::Set&, KoProperty::Property&)),
this, TQT_SLOT(slotPropertyChanged(KoProperty::Set&, KoProperty::Property&)));
d->sets->insert(row, set, newOne);
updatePropertiesVisibility(*set);
return set;
}
void KexiQueryDesignerGuiEditor::setFocus()
{
d->dataTable->setFocus();
}
void KexiQueryDesignerGuiEditor::slotPropertyChanged(KoProperty::Set& set, KoProperty::Property& property)
{
const TQCString& pname = property.name();
/*
* TODO (js) use KexiProperty::setValidator(TQString) when implemented as described in TODO #60
*/
if (pname=="alias" || pname=="name") {
const TQVariant& v = property.value();
if (!v.toString().stripWhiteSpace().isEmpty() && !KexiUtils::isIdentifier( v.toString() )) {
KMessageBox::sorry(this,
KexiUtils::identifierExpectedMessage(property.caption(), v.toString()));
property.resetValue();
}
if (pname=="alias") {
if (set["isExpression"].value().toBool()==true) {
//update value in column #1
d->dataTable->dataAwareObject()->acceptEditor();
// d->dataTable->dataAwareObject()->setCursorPosition(d->dataTable->dataAwareObject()->currentRow(),0);
//d->dataTable->dataAwareObject()->startEditCurrentCell();
d->data->updateRowEditBuffer(d->dataTable->dataAwareObject()->selectedItem(),
0, TQVariant(set["alias"].value().toString() + ": " + set["field"].value().toString()));
d->data->saveRowChanges(*d->dataTable->dataAwareObject()->selectedItem(), true);
// d->dataTable->dataAwareObject()->acceptRowEdit();
}
}
}
}
void KexiQueryDesignerGuiEditor::slotNewItemStored(KexiPart::Item& item)
{
d->relations->objectCreated(item.mimeType(), item.name().latin1());
}
void KexiQueryDesignerGuiEditor::slotItemRemoved(const KexiPart::Item& item)
{
d->relations->objectDeleted(item.mimeType(), item.name().latin1());
}
void KexiQueryDesignerGuiEditor::slotItemRenamed(const KexiPart::Item& item, const TQCString& oldName)
{
d->relations->objectRenamed(item.mimeType(), oldName, item.name().latin1());
}
#include "kexiquerydesignerguieditor.moc"
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