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130 lines
4.1 KiB
130 lines
4.1 KiB
/* This file is part of the KDE project
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Copyright (C) 2003,2006 Jaroslaw Staniek <js@iidea.pl>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "roweditbuffer.h"
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#include "utils.h"
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#include <kdebug.h>
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using namespace KexiDB;
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RowEditBuffer::RowEditBuffer(bool dbAwareBuffer)
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: m_simpleBuffer(dbAwareBuffer ? 0 : new SimpleMap())
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, m_simpleBufferIt(dbAwareBuffer ? 0 : new SimpleMap::ConstIterator())
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, m_dbBuffer(dbAwareBuffer ? new DBMap() : 0)
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, m_dbBufferIt(dbAwareBuffer ? new DBMap::Iterator() : 0)
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, m_defaultValuesDbBuffer(dbAwareBuffer ? new TQMap<QueryColumnInfo*,bool>() : 0)
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, m_defaultValuesDbBufferIt(dbAwareBuffer ? new TQMap<QueryColumnInfo*,bool>::ConstIterator() : 0)
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{
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}
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RowEditBuffer::~RowEditBuffer()
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{
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delete m_simpleBuffer;
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delete m_simpleBufferIt;
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delete m_dbBuffer;
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delete m_defaultValuesDbBuffer;
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delete m_dbBufferIt;
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}
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const TQVariant* RowEditBuffer::at( QueryColumnInfo& ci, bool useDefaultValueIfPossible ) const
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{
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if (!m_dbBuffer) {
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KexiDBWarn << "RowEditBuffer::at(QueryColumnInfo&): not db-aware buffer!" << endl;
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return 0;
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}
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*m_dbBufferIt = m_dbBuffer->find( &ci );
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TQVariant* result = 0;
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if (*m_dbBufferIt!=m_dbBuffer->end())
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result = &(*m_dbBufferIt).data();
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if ( useDefaultValueIfPossible
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&& (!result || result->isNull())
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&& ci.field && !ci.field->defaultValue().isNull() && KexiDB::isDefaultValueAllowed(ci.field)
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&& !hasDefaultValueAt(ci) )
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{
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//no buffered or stored value: try to get a default value declared in a field, so user can modify it
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if (!result)
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m_dbBuffer->insert(&ci, ci.field->defaultValue() );
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result = &(*m_dbBuffer)[ &ci ];
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m_defaultValuesDbBuffer->insert(&ci, true);
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}
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return (const TQVariant*)result;
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}
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const TQVariant* RowEditBuffer::at( Field& f ) const
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{
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if (!m_simpleBuffer) {
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KexiDBWarn << "RowEditBuffer::at(Field&): this is db-aware buffer!" << endl;
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return 0;
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}
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*m_simpleBufferIt = m_simpleBuffer->find( f.name() );
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if (*m_simpleBufferIt==m_simpleBuffer->constEnd())
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return 0;
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return &(*m_simpleBufferIt).data();
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}
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const TQVariant* RowEditBuffer::at( const TQString& fname ) const
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{
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if (!m_simpleBuffer) {
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KexiDBWarn << "RowEditBuffer::at(Field&): this is db-aware buffer!" << endl;
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return 0;
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}
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*m_simpleBufferIt = m_simpleBuffer->find( fname );
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if (*m_simpleBufferIt==m_simpleBuffer->constEnd())
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return 0;
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return &(*m_simpleBufferIt).data();
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}
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void RowEditBuffer::clear() {
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if (m_dbBuffer) {
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m_dbBuffer->clear();
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m_defaultValuesDbBuffer->clear();
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}
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if (m_simpleBuffer)
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m_simpleBuffer->clear();
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}
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bool RowEditBuffer::isEmpty() const
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{
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if (m_dbBuffer)
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return m_dbBuffer->isEmpty();
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if (m_simpleBuffer)
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return m_simpleBuffer->isEmpty();
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return true;
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}
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void RowEditBuffer::debug()
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{
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if (isDBAware()) {
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KexiDBDbg << "RowEditBuffer type=DB-AWARE, " << m_dbBuffer->count() <<" items"<< endl;
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for (DBMap::ConstIterator it = m_dbBuffer->constBegin(); it!=m_dbBuffer->constEnd(); ++it) {
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KexiDBDbg << "* field name=" <<it.key()->field->name()<<" val="
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<< (it.data().isNull() ? TQString("<NULL>") : it.data().toString())
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<< (hasDefaultValueAt(*it.key()) ? " DEFAULT" : "") <<endl;
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}
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return;
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}
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KexiDBDbg << "RowEditBuffer type=SIMPLE, " << m_simpleBuffer->count() <<" items"<< endl;
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for (SimpleMap::ConstIterator it = m_simpleBuffer->constBegin(); it!=m_simpleBuffer->constEnd(); ++it) {
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KexiDBDbg << "* field name=" <<it.key()<<" val="
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<< (it.data().isNull() ? TQString("<NULL>") : it.data().toString()) <<endl;
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}
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}
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