C++ (Cpp) QgsExpression::expression示例

QgsFeatureRequest::QgsFeatureRequest( const QgsExpression& expr )
    : mFilter( FilterExpression )
    , mFilterFid( -1 )
    , mFilterExpression( new QgsExpression( expr.expression() ) )
    , mFlags( 0 )
{
}

示例#2

显示文件

文件： testqgsogcutils.cpp 项目： AaronGaim/QGIS

void TestQgsOgcUtils::testExpressionFromOgcFilter()
{
  QFETCH( QString, xmlText );
  QFETCH( QString, dumpText );

  QDomDocument doc;
  QVERIFY( doc.setContent( xmlText, true ) );
  QDomElement rootElem = doc.documentElement();

  QgsExpression* expr = QgsOgcUtils::expressionFromOgcFilter( rootElem );
  QVERIFY( expr );

  qDebug( "OGC XML  : %s", xmlText.toAscii().data() );
  qDebug( "EXPR-DUMP: %s", expr->expression().toAscii().data() );

  if ( expr->hasParserError() )
    qDebug( "ERROR: %s ", expr->parserErrorString().toAscii().data() );
  QVERIFY( !expr->hasParserError() );

  QCOMPARE( dumpText, expr->expression() );

  delete expr;
}