void TestQgsFields::count()
{
QgsFields fields;
QCOMPARE( fields.count(), 0 );
QCOMPARE( fields.size(), 0 );
QgsField field( "testfield" );
fields.append( field );
QCOMPARE( fields.count(), 1 );
QCOMPARE( fields.size(), 1 );
QgsField field2( "testfield2" );
fields.append( field2 );
QCOMPARE( fields.count(), 2 );
QCOMPARE( fields.size(), 2 );
}
QgsGml::QgsGml(
const QString& typeName,
const QString& geometryAttribute,
const QgsFields & fields )
: QObject()
, mTypeName( typeName )
, mGeometryAttribute( geometryAttribute )
, mFinished( false )
, mCurrentFeature( 0 )
, mFeatureCount( 0 )
, mCurrentWKBSize( 0 )
, mEpsg( 0 )
{
mThematicAttributes.clear();
for ( int i = 0; i < fields.size(); i++ )
{
mThematicAttributes.insert( fields[i].name(), qMakePair( i, fields[i] ) );
}
mEndian = QgsApplication::endian();
int index = mTypeName.indexOf( ":" );
if ( index != -1 && index < mTypeName.length() )
{
mTypeName = mTypeName.mid( index + 1 );
}
}
QStringList QgsGrassVectorMapLayer::fieldNames( QgsFields & fields )
{
QStringList list;
for ( int i = 0; i < fields.size(); i++ )
{
list << fields.at( i ).name();
}
return list;
}
QgsGml::QgsGml(
const QString& typeName,
const QString& geometryAttribute,
const QgsFields & fields )
: QObject()
, mTypeName( typeName )
, mGeometryAttribute( geometryAttribute )
, mFinished( false )
, mFeatureCount( 0 )
, mCurrentWKBSize( 0 )
{
mThematicAttributes.clear();
for ( int i = 0; i < fields.size(); i++ )
{
mThematicAttributes.insert( fields[i].name(), qMakePair( i, fields[i] ) );
}
mEndian = QgsApplication::endian();
}
QgsVectorLayerImport::ImportError QgsDb2Provider::createEmptyLayer( const QString& uri,
const QgsFields &fields,
QgsWkbTypes::Type wkbType,
const QgsCoordinateReferenceSystem& srs,
bool overwrite,
QMap<int, int> *oldToNewAttrIdxMap,
QString *errorMessage,
const QMap<QString, QVariant> *options )
{
Q_UNUSED( options );
// populate members from the uri structure
QgsDataSourceUri dsUri( uri );
QString connInfo = dsUri.connectionInfo();
QString errMsg;
QString srsName;
QgsDebugMsg( "uri: " + uri );
// connect to database
QSqlDatabase db = QgsDb2Provider::getDatabase( connInfo, errMsg );
if ( !errMsg.isEmpty() )
{
if ( errorMessage )
*errorMessage = errMsg;
return QgsVectorLayerImport::ErrConnectionFailed;
}
// Get the SRS name using srid, needed to register the spatial column
// srs->posgisSrid() seems to return the authority id which is
// most often the EPSG id. Hopefully DB2 has defined an SRS using this
// value as the srid / srs_id. If not, we are out of luck.
QgsDebugMsg( "srs: " + srs.toWkt() );
long srid = srs.postgisSrid();
QgsDebugMsg( QString( "srid: %1" ).arg( srid ) );
if ( srid >= 0 )
{
QSqlQuery query( db );
QString statement = QString( "SELECT srs_name FROM db2gse.st_spatial_reference_systems where srs_id=%1" )
.arg( srid );
QgsDebugMsg( statement );
if ( !query.exec( statement ) || !query.isActive() )
{
QgsDebugMsg( query.lastError().text() );
}
if ( query.next() )
{
srsName = query.value( 0 ).toString();
QgsDebugMsg( QString( "srs_name: %1" ).arg( srsName ) );
}
else
{
QgsDebugMsg( "Couldn't get srs_name from db2gse.st_spatial_reference_systems" );
}
}
QString schemaName = dsUri.schema().toUpper();
QString tableName = dsUri.table().toUpper();
QString fullName;
if ( schemaName.isEmpty() )
{
schemaName = dsUri.username().toUpper(); // set schema to user name
}
fullName = schemaName + "." + tableName;
QString geometryColumn = dsUri.geometryColumn().toUpper();
QString primaryKey = dsUri.keyColumn().toUpper();
QString primaryKeyType;
// TODO - this is a bad hack to cope with shapefiles.
// The wkbType from the shapefile header is usually a multi-type
// even if all the data is a single-type. If we create the column as
// a multi-type, the insert will fail if the actual data is a single-type
// due to type mismatch.
// We could potentially defer adding the spatial column until addFeatures is
// called the first time, but QgsVectorLayerImport doesn't pass the CRS/srid
// information to the DB2 provider and we need this information to register
// the spatial column.
// This hack is problematic because the drag/drop will fail if the
// actual data is a multi-type which is possible with a shapefile or
// other data source.
QgsWkbTypes::Type wkbTypeSingle;
wkbTypeSingle = QgsWkbTypes::singleType( wkbType );
if ( wkbType != QgsWkbTypes::NoGeometry && geometryColumn.isEmpty() )
geometryColumn = "GEOM";
if ( primaryKey.isEmpty() )
primaryKey = "QGS_FID";
// get the pk's name and type
// if no pk name was passed, define the new pk field name
int fieldCount = fields.size();
if ( primaryKey.isEmpty() )
{
int index = 0;
QString pk = primaryKey = "QGS_FID";
for ( int i = 0; i < fieldCount; ++i )
{
if ( fields.at( i ).name() == primaryKey )
{
// it already exists, try again with a new name
primaryKey = QString( "%1_%2" ).arg( pk ).arg( index++ );
i = 0;
}
}
}
else
{
// search for the passed field
for ( int i = 0; i < fieldCount; ++i )
{
if ( fields.at( i ).name() == primaryKey )
{
// found, get the field type
QgsField fld = fields.at( i );
if ( convertField( fld ) )
{
primaryKeyType = fld.typeName();
}
}
}
}
QgsDebugMsg( "primaryKeyType: '" + primaryKeyType + "'" );
QString sql;
QSqlQuery q = QSqlQuery( db );
q.setForwardOnly( true );
// get wkb type and dimension
QString geometryType;
int dim = 2;
db2WkbTypeAndDimension( wkbTypeSingle, geometryType, dim );
QgsDebugMsg( QString( "wkbTypeSingle: %1; geometryType: %2" ).arg( wkbTypeSingle ).arg( geometryType ) );
if ( overwrite )
{
// remove the old table with the same name
sql = "DROP TABLE " + fullName;
if ( !q.exec( sql ) )
{
if ( q.lastError().number() != -206 ) // -206 is "not found" just ignore
{
QString lastError = q.lastError().text();
QgsDebugMsg( lastError );
if ( errorMessage )
{
*errorMessage = lastError;
}
return QgsVectorLayerImport::ErrCreateLayer;
}
}
}
// add fields to the layer
if ( oldToNewAttrIdxMap )
oldToNewAttrIdxMap->clear();
QString attr2Create = "";
if ( fields.size() > 0 )
{
int offset = 0;
// get the list of fields
QgsDebugMsg( "PrimaryKey: '" + primaryKey + "'" );
for ( int i = 0; i < fieldCount; ++i )
{
QgsField fld = fields.field( i );
QgsDebugMsg( QString( "i: %1; fldIdx: %2; offset: %3" )
.arg( i ).arg( fields.lookupField( fld.name() ) ).arg( offset ) );
if ( oldToNewAttrIdxMap && fld.name() == primaryKey )
{
oldToNewAttrIdxMap->insert( i , 0 );
continue;
}
if ( fld.name() == geometryColumn )
{
// Found a field with the same name of the geometry column. Skip it!
continue;
}
QString db2Field = qgsFieldToDb2Field( fld );
if ( db2Field.isEmpty() )
{
if ( errorMessage )
{
*errorMessage = QObject::tr( "Unsupported type for field %1" ).arg( fld.name() );
}
return QgsVectorLayerImport::ErrAttributeTypeUnsupported;
}
if ( oldToNewAttrIdxMap )
{
oldToNewAttrIdxMap->insert( fields.lookupField( fld.name() ), offset++ );
}
attr2Create += ',' + db2Field.toUpper();
}
QgsDebugMsg( attr2Create );
if ( !geometryColumn.isEmpty() )
{
sql = QString( // need to set specific geometry type
"CREATE TABLE %1(%2 BIGINT NOT NULL PRIMARY KEY GENERATED ALWAYS AS IDENTITY, "
"%3 DB2GSE.%4 %5) " )
.arg( fullName,
primaryKey,
geometryColumn,
geometryType,
attr2Create );
}
else
{
//geometryless table
sql = QString( // need to set specific geometry type
"CREATE TABLE %1.%2(%3 INTEGER NOT NULL PRIMARY KEY GENERATED ALWAYS %4) " )
.arg( schemaName,
tableName,
primaryKey,
attr2Create );
}
QgsDebugMsg( sql );
if ( !q.exec( sql ) )
{
QString lastError = q.lastError().text();
QgsDebugMsg( lastError );
if ( errorMessage )
{
*errorMessage = lastError;
}
return QgsVectorLayerImport::ErrCreateLayer;
}
if ( !geometryColumn.isEmpty() )
{
int computeExtents = 0;
int msgCode = 0;
int outCode;
int outMsg;
QVariant msgText( " " );
QSqlQuery query( db );
int db2Environment = ENV_LUW;
// get the environment
QgsDb2GeometryColumns gc( db );
int rc = gc.open( schemaName, tableName ); // returns SQLCODE if failure
if ( rc == 0 )
{
db2Environment = gc.db2Environment();
}
if ( ENV_LUW == db2Environment )
{
sql = QString( "CALL DB2GSE.ST_Register_Spatial_Column(?, ?, ?, ?, ?, ?, ?)" );
outCode = 5;
outMsg = 6;
}
else // z/OS doesn't support 'computeExtents' parameter and has different schema
{
sql = QString( "CALL SYSPROC.ST_Register_Spatial_Column(?, ?, ?, ?, ?, ?)" );
outCode = 4;
outMsg = 5;
}
query.prepare( sql );
query.bindValue( 0, schemaName );
query.bindValue( 1, tableName );
query.bindValue( 2, geometryColumn );
query.bindValue( 3, srsName );
if ( ENV_LUW == db2Environment )
{
query.bindValue( 4, computeExtents );
}
query.bindValue( outCode, msgCode, QSql::Out );
query.bindValue( outMsg, msgText, QSql::Out );
if ( !query.exec() )
{
QgsDebugMsg( QString( "error: %1; sql: %2" ).arg( query.lastError().text(), query.lastQuery() ) );
}
else
{
msgCode = query.boundValue( outCode ).toInt();
msgText = query.boundValue( outMsg ).toString(); // never gets a value...
if ( 0 != msgCode )
{
QgsDebugMsg( QString( "Register failed with code: %1; text: '%2'" ).arg( msgCode ).arg( msgText.toString() ) );
}
else
{
QgsDebugMsg( "Register successful" );
}
}
QList<QVariant> list = query.boundValues().values();
for ( int i = 0; i < list.size(); ++i )
{
QgsDebugMsg( QString( "i: %1; value: %2; type: %3" )
.arg( i ).arg( list.at( i ).toString().toLatin1().data() ).arg( list.at( i ).typeName() ) );
}
}
// clear any resources hold by the query
q.clear();
q.setForwardOnly( true );
}
QgsDebugMsg( "successfully created empty layer" );
return QgsVectorLayerImport::NoError;
}
