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a) applied the patch suggested in ticket #3139
b) fixed the SourceSelect dialog so to avoid showing RasterLite-1 related tables git-svn-id: http://svn.osgeo.org/qgis/trunk@14435 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
esseffe
parent
752bad8d76
commit
510d4259bb
@ -507,6 +507,8 @@ bool QgsSpatiaLiteSourceSelect::getTableInfo( sqlite3 * handle )
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{
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for ( i = 1; i <= rows; i++ )
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{
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if ( isRasterlite1Datasource( handle, results[( i * columns ) + 0] ) )
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continue;
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QString tableName = QString::fromUtf8( results[( i * columns ) + 0] );
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QString column = QString::fromUtf8( results[( i * columns ) + 1] );
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QString type = results[( i * columns ) + 2];
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@ -698,6 +700,52 @@ bool QgsSpatiaLiteSourceSelect::checkVirtsGeometryColumns( sqlite3 * handle )
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return exists;
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}
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bool QgsSpatiaLiteSourceSelect::isRasterlite1Datasource (sqlite3 * handle, const char *table)
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{
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// testing for RasterLite-1 datasources
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int ret;
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int i;
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char **results;
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int rows;
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int columns;
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bool exists = false;
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int len;
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char table_raster[4192];
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char sql[4192];
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strcpy ( table_raster, table );
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len = strlen( table_raster );
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if (strlen( table_raster ) < 9)
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return false;
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if (strcmp( table_raster + len - 9, "_metadata" ) != 0)
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return false;
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// ok, possible candidate
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strcpy( table_raster + len - 9, "_rasters" );
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// checking if the related "_RASTERS table exists
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sprintf( sql, "SELECT name FROM sqlite_master WHERE type = 'table' AND name = '%s'", table_raster );
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ret = sqlite3_get_table( handle, sql, &results, &rows, &columns, NULL );
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if ( ret != SQLITE_OK )
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return false;
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if ( rows < 1 )
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;
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else
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{
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for ( i = 1; i <= rows; i++ )
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{
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if ( results[( i * columns ) + 0] != NULL )
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{
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const char *name = results[( i * columns ) + 0];
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if ( name )
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exists = true;
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}
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}
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}
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sqlite3_free_table( results );
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return exists;
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}
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bool QgsSpatiaLiteSourceSelect::isDeclaredHidden( sqlite3 * handle, QString table, QString geom )
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{
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int ret;
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@ -117,6 +117,9 @@ class QgsSpatiaLiteSourceSelect: public QDialog, private Ui::QgsSpatiaLiteSource
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/**Checks if this layer has been declared HIDDEN*/
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bool isDeclaredHidden( sqlite3 * handle, QString table, QString geom );
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/**Checks if this layer is a RasterLite-1 datasource*/
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bool isRasterlite1Datasource( sqlite3 * handle, const char * table );
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/**cleaning well-formatted SQL strings*/
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QString quotedValue( QString value ) const;
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@ -52,6 +52,8 @@ QgsSpatiaLiteProvider::QgsSpatiaLiteProvider( QString const &uri )
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mGeometryColumn = anUri.geometryColumn();
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mSqlitePath = anUri.database();
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mSubsetString = anUri.sql();
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mPrimaryKey = anUri.keyColumn();
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mQuery = mTableName;
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// trying to open the SQLite DB
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spatialite_init( 0 );
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@ -131,6 +133,7 @@ void QgsSpatiaLiteProvider::loadFields()
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{
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int ret;
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int i;
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sqlite3_stmt *stmt = NULL;
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char **results;
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int rows;
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int columns;
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@ -138,58 +141,129 @@ void QgsSpatiaLiteProvider::loadFields()
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QString pkName;
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int pkCount = 0;
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int fldNo = 0;
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QString sql;
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attributeFields.clear();
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mPrimaryKey.clear();
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QString sql = QString( "PRAGMA table_info(\"%1\")" ).arg( mTableName );
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ret = sqlite3_get_table( sqliteHandle, sql.toUtf8().constData(), &results, &rows, &columns, &errMsg );
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if ( ret != SQLITE_OK )
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goto error;
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if ( rows < 1 )
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;
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else
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if ( !isQuery )
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{
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for ( i = 1; i <= rows; i++ )
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mPrimaryKey.clear();
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sql = QString( "PRAGMA table_info(%1)" ).arg( quotedIdentifier( mTableName ) );
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ret = sqlite3_get_table( sqliteHandle, sql.toUtf8().constData(), &results, &rows, &columns, &errMsg );
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if ( ret != SQLITE_OK )
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goto error;
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if ( rows < 1 )
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;
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else
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{
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QString name = QString::fromUtf8( results[( i * columns ) + 1] );
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const char *type = results[( i * columns ) + 2];
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QString pk = results[( i * columns ) + 5];
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if ( pk.toInt() != 0 )
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for ( i = 1; i <= rows; i++ )
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{
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// found a Primary Key column
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pkCount++;
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pkName = name;
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}
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if ( name != mGeometryColumn )
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{
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// for sure any SQLite value can be represented as SQLITE_TEXT
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QVariant::Type fieldType = QVariant::String;
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// making some assumptions in order to guess a more realistic type
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if ( strcasecmp( type, "int" ) == 0 ||
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strcasecmp( type, "integer" ) == 0 ||
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strcasecmp( type, "bigint" ) == 0 ||
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strcasecmp( type, "smallint" ) == 0 ||
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strcasecmp( type, "tinyint" ) == 0 ||
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strcasecmp( type, "boolean" ) == 0 )
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QString name = QString::fromUtf8( results[( i * columns ) + 1] );
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const char *type = results[( i * columns ) + 2];
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QString pk = results[( i * columns ) + 5];
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if ( pk.toInt() != 0 )
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{
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fieldType = QVariant::Int;
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}
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else if ( strcasecmp( type, "real" ) == 0 ||
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strcasecmp( type, "double" ) == 0 ||
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strcasecmp( type, "double precision" ) == 0 || strcasecmp( type, "float" ) == 0 )
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{
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fieldType = QVariant::Double;
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// found a Primary Key column
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pkCount++;
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pkName = name;
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}
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attributeFields.insert( fldNo++, QgsField( name, fieldType, type, 0, 0, "" ) );
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if ( name != mGeometryColumn )
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{
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// for sure any SQLite value can be represented as SQLITE_TEXT
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QVariant::Type fieldType = QVariant::String;
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// making some assumptions in order to guess a more realistic type
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if ( strcasecmp( type, "int" ) == 0 ||
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strcasecmp( type, "integer" ) == 0 ||
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strcasecmp( type, "bigint" ) == 0 ||
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strcasecmp( type, "smallint" ) == 0 ||
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strcasecmp( type, "tinyint" ) == 0 ||
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strcasecmp( type, "boolean" ) == 0 )
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{
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fieldType = QVariant::Int;
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}
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else if ( strcasecmp( type, "real" ) == 0 ||
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strcasecmp( type, "double" ) == 0 ||
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strcasecmp( type, "double precision" ) == 0 || strcasecmp( type, "float" ) == 0 )
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{
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fieldType = QVariant::Double;
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}
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attributeFields.insert( fldNo++, QgsField( name, fieldType, type, 0, 0, "" ) );
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}
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}
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}
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sqlite3_free_table( results );
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}
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sqlite3_free_table( results );
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else
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{
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sql = QString( "select * from %1 limit 1" ).arg( mQuery );
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if ( sqlite3_prepare_v2( sqliteHandle, sql.toUtf8().constData(), -1, &stmt, NULL ) != SQLITE_OK )
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{
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// some error occurred
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QgsDebugMsg( QString( "SQLite error: %1\n\nSQL: %2" )
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.arg( sql )
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.arg( QString::fromUtf8( sqlite3_errmsg( sqliteHandle ) ) ) );
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return;
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}
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ret = sqlite3_step( stmt );
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if ( ret == SQLITE_DONE )
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{
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// there are no rows to fetch
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sqlite3_finalize( stmt );
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return;
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}
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if ( ret == SQLITE_ROW )
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{
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// one valid row has been fetched from the result set
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columns = sqlite3_column_count( stmt );
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for ( i = 0; i < columns; i++ )
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{
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QString name = QString::fromUtf8( sqlite3_column_name( stmt, i ) );
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const char *type = sqlite3_column_decltype( stmt, i );
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if ( type == NULL )
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type = "TEXT";
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if ( name != mPrimaryKey )
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{
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pkCount++;
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pkName = name;
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}
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if ( name != mGeometryColumn )
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{
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// for sure any SQLite value can be represented as SQLITE_TEXT
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QVariant::Type fieldType = QVariant::String;
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// making some assumptions in order to guess a more realistic type
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if ( strcasecmp( type, "int" ) == 0 ||
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strcasecmp( type, "integer" ) == 0 ||
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strcasecmp( type, "bigint" ) == 0 ||
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strcasecmp( type, "smallint" ) == 0 ||
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strcasecmp( type, "tinyint" ) == 0 ||
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strcasecmp( type, "boolean" ) == 0 )
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{
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fieldType = QVariant::Int;
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}
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else if ( strcasecmp( type, "real" ) == 0 ||
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strcasecmp( type, "double" ) == 0 ||
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strcasecmp( type, "double precision" ) == 0 || strcasecmp( type, "float" ) == 0 )
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{
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fieldType = QVariant::Double;
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}
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attributeFields.insert( fldNo++, QgsField( name, fieldType, type, 0, 0, "" ) );
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}
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}
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}
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sqlite3_finalize( stmt );
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}
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if ( pkCount == 1 )
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{
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@ -221,7 +295,9 @@ bool QgsSpatiaLiteProvider::featureAtId( int featureId, QgsFeature & feature, bo
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feature.setValid( false );
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QString sql = "SELECT ROWID";
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QString primaryKey = !isQuery ? "ROWID" : quotedIdentifier( mPrimaryKey );
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QString sql = QString( "SELECT %1" ).arg( primaryKey );
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for ( QgsAttributeList::const_iterator it = fetchAttributes.constBegin(); it != fetchAttributes.constEnd(); ++it )
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{
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const QgsField & fld = field( *it );
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@ -232,7 +308,10 @@ bool QgsSpatiaLiteProvider::featureAtId( int featureId, QgsFeature & feature, bo
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{
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sql += QString( ", AsBinary(%1)" ).arg( quotedIdentifier( mGeometryColumn ) );
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}
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sql += QString( " FROM %1 WHERE ROWID = %2" ).arg( quotedIdentifier( mTableName ) ).arg( featureId );
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sql += QString( " FROM %1 WHERE %2 = %3" )
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.arg( mQuery )
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.arg( primaryKey )
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.arg( featureId );
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if ( sqlite3_prepare_v2( sqliteHandle, sql.toUtf8().constData(), -1, &stmt, NULL ) != SQLITE_OK )
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{
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@ -267,7 +346,7 @@ bool QgsSpatiaLiteProvider::featureAtId( int featureId, QgsFeature & feature, bo
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{
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if ( ic == 0 )
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{
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// first column always contains the ROWID
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// first column always contains the ROWID (or the primary key)
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feature.setFeatureId( sqlite3_column_int( stmt, ic ) );
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}
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else
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@ -391,7 +470,7 @@ bool QgsSpatiaLiteProvider::nextFeature( QgsFeature & feature )
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{
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if ( ic == 0 )
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{
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// first column always contains the ROWID
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// first column always contains the ROWID (or the primary key)
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feature.setFeatureId( sqlite3_column_int( sqliteStatement, ic ) );
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}
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else
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@ -522,7 +601,9 @@ void QgsSpatiaLiteProvider::select( QgsAttributeList fetchAttributes, QgsRectang
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sqliteStatement = NULL;
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}
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QString sql = "SELECT ROWID";
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QString primaryKey = !isQuery ? "ROWID" : quotedIdentifier( mPrimaryKey );
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QString sql = QString( "SELECT %1" ).arg( primaryKey );
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for ( QgsAttributeList::const_iterator it = fetchAttributes.constBegin(); it != fetchAttributes.constEnd(); ++it )
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{
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const QgsField & fld = field( *it );
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@ -533,7 +614,7 @@ void QgsSpatiaLiteProvider::select( QgsAttributeList fetchAttributes, QgsRectang
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{
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sql += QString( ", AsBinary(%1)" ).arg( quotedIdentifier( mGeometryColumn ) );
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}
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sql += QString( " FROM %1" ).arg( quotedIdentifier( mTableName ) );
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sql += QString( " FROM %1" ).arg( mQuery );
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QString whereClause;
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@ -569,7 +650,10 @@ void QgsSpatiaLiteProvider::select( QgsAttributeList fetchAttributes, QgsRectang
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mbrFilter += QString( "ymin <= %1 AND " ).arg( QString::number( rect.yMaximum(), 'f', 6 ) );
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mbrFilter += QString( "ymax >= %1" ).arg( QString::number( rect.yMinimum(), 'f', 6 ) );
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QString idxName = QString( "idx_%1_%2" ).arg( mIndexTable ).arg( mIndexGeometry );
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whereClause += QString( "ROWID IN (SELECT pkid FROM %1 WHERE %2)" ).arg( quotedIdentifier( idxName ) ).arg( mbrFilter );
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whereClause += QString( "%1 IN (SELECT pkid FROM %2 WHERE %3)" )
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.arg( quotedIdentifier( primaryKey ) )
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.arg( quotedIdentifier( idxName ) )
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.arg( mbrFilter );
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}
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else if ( spatialIndexMbrCache )
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{
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@ -579,7 +663,10 @@ void QgsSpatiaLiteProvider::select( QgsAttributeList fetchAttributes, QgsRectang
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arg( QString::number( rect.yMinimum(), 'f', 6 ) ).
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arg( QString::number( rect.xMaximum(), 'f', 6 ) ).arg( QString::number( rect.yMaximum(), 'f', 6 ) );
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QString idxName = QString( "cache_%1_%2" ).arg( mIndexTable ).arg( mIndexGeometry );
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whereClause += QString( "ROWID IN (SELECT rowid FROM %1 WHERE mbr = FilterMbrIntersects(%2))" ).arg( quotedIdentifier( idxName ) ).arg( mbr );
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whereClause += QString( "%1 IN (SELECT rowid FROM %2 WHERE mbr = FilterMbrIntersects(%3))" )
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.arg( quotedIdentifier( primaryKey ) )
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.arg( quotedIdentifier( idxName ) )
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.arg( mbr );
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}
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else
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{
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@ -711,7 +798,7 @@ QVariant QgsSpatiaLiteProvider::minimumValue( int index )
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// get the field name
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const QgsField & fld = field( index );
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QString sql = QString( "SELECT Min(\"%1\") FROM \"%2\"" ).arg( fld.name() ).arg( mTableName );
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QString sql = QString( "SELECT Min(%1) FROM %2" ).arg( quotedIdentifier( fld.name() ) ).arg( mQuery );
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if ( !mSubsetString.isEmpty() )
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{
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@ -766,7 +853,7 @@ QVariant QgsSpatiaLiteProvider::maximumValue( int index )
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// get the field name
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const QgsField & fld = field( index );
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QString sql = QString( "SELECT Max(\"%1\") FROM \"%2\"" ).arg( fld.name() ).arg( mTableName );
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QString sql = QString( "SELECT Max(%1) FROM %2" ).arg( quotedIdentifier( fld.name() ) ).arg( mQuery );
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if ( !mSubsetString.isEmpty() )
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{
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@ -819,7 +906,7 @@ void QgsSpatiaLiteProvider::uniqueValues( int index, QList < QVariant > &uniqueV
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// get the field name
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const QgsField & fld = field( index );
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sql = QString( "SELECT DISTINCT \"%1\" FROM \"%2\" ORDER BY \"%1\"" ).arg( fld.name() ).arg( mTableName );
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sql = QString( "SELECT DISTINCT %1 FROM %2 ORDER BY %1" ).arg( quotedIdentifier( fld.name() ) ).arg( mQuery );
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if ( !mSubsetString.isEmpty() )
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{
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@ -1511,6 +1598,7 @@ bool QgsSpatiaLiteProvider::checkLayerType()
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mTableBased = false;
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mViewBased = false;
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mVShapeBased = false;
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isQuery = false;
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// checking if this one is a Table-based layer
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QString sql = QString( "SELECT read_only FROM geometry_columns "
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@ -1594,6 +1682,49 @@ bool QgsSpatiaLiteProvider::checkLayerType()
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}
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sqlite3_free_table( results );
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// checking if this one is a select query
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if ( mQuery.startsWith( "(select", Qt::CaseInsensitive ) &&
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mQuery.endsWith( ")" ) )
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{
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// get a new alias for the subquery
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int index = 0;
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QString alias;
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QRegExp regex;
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do
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{
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alias = QString( "subQuery_%1" ).arg( QString::number( index++ ) );
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QString pattern = QString( "(\\\"?)%1\\1" ).arg( QRegExp::escape( alias ) );
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regex.setPattern( pattern );
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regex.setCaseSensitivity( Qt::CaseInsensitive );
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}
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while ( mQuery.contains( regex ) );
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// convert the custom query into a subquery
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mQuery = QString( "%1 as %2" )
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.arg( mQuery )
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.arg( quotedIdentifier( alias ) );
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sql = QString( "SELECT 0 FROM %1 LIMIT 1" ).arg( mQuery );
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ret = sqlite3_get_table( sqliteHandle, sql.toUtf8().constData(), &results, &rows, &columns, &errMsg );
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if ( ret == SQLITE_OK && rows == 1 )
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{
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isQuery = true;
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mReadOnly = true;
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count++;
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}
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if ( errMsg )
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{
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QgsDebugMsg( QString( "sqlite error %1 [%2]" ).arg( sql ).arg( errMsg ) );
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sqlite3_free( errMsg );
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errMsg = 0;
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}
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sqlite3_free_table( results );
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}
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else
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{
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mQuery = quotedIdentifier( mTableName );
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}
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// checking for validity
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return count == 1;
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}
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@ -1607,6 +1738,8 @@ bool QgsSpatiaLiteProvider::getGeometryDetails()
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ret = getViewGeometryDetails();
|
||||
if ( mVShapeBased )
|
||||
ret = getVShapeGeometryDetails();
|
||||
if ( isQuery )
|
||||
ret = getQueryGeometryDetails();
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -1845,6 +1978,122 @@ error:
|
||||
return false;
|
||||
}
|
||||
|
||||
bool QgsSpatiaLiteProvider::getQueryGeometryDetails()
|
||||
{
|
||||
int ret;
|
||||
int i;
|
||||
char **results;
|
||||
int rows;
|
||||
int columns;
|
||||
char *errMsg = NULL;
|
||||
|
||||
QString fType( "" );
|
||||
QString xSrid( "" );
|
||||
|
||||
// get stuff from the relevant column instead. This may (will?)
|
||||
// fail if there is no data in the relevant table.
|
||||
QString sql = QString( "select srid(%1), geometrytype(%1) from %2" )
|
||||
.arg( quotedIdentifier( mGeometryColumn ) )
|
||||
.arg( mQuery );
|
||||
|
||||
//it is possible that the where clause restricts the feature type
|
||||
if ( !mSubsetString.isEmpty() )
|
||||
{
|
||||
sql += " WHERE " + mSubsetString;
|
||||
}
|
||||
|
||||
sql += " limit 1";
|
||||
|
||||
ret = sqlite3_get_table( sqliteHandle, sql.toUtf8().constData(), &results, &rows, &columns, &errMsg );
|
||||
if ( ret != SQLITE_OK )
|
||||
goto error;
|
||||
if ( rows < 1 )
|
||||
;
|
||||
else
|
||||
{
|
||||
for ( i = 1; i <= rows; i++ )
|
||||
{
|
||||
xSrid = results[( i * columns ) + 0];
|
||||
fType = results[( i * columns ) + 1];
|
||||
}
|
||||
}
|
||||
sqlite3_free_table( results );
|
||||
|
||||
if ( !xSrid.isEmpty() && !fType.isEmpty() )
|
||||
{
|
||||
if ( fType == "GEOMETRY" )
|
||||
{
|
||||
// check to see if there is a unique geometry type
|
||||
sql = QString( "select distinct "
|
||||
"case"
|
||||
" when geometrytype(%1) IN ('POINT','MULTIPOINT') THEN 'POINT'"
|
||||
" when geometrytype(%1) IN ('LINESTRING','MULTILINESTRING') THEN 'LINESTRING'"
|
||||
" when geometrytype(%1) IN ('POLYGON','MULTIPOLYGON') THEN 'POLYGON'"
|
||||
" end "
|
||||
"from %2" )
|
||||
.arg( quotedIdentifier( mGeometryColumn ) )
|
||||
.arg( mQuery );
|
||||
|
||||
if ( !mSubsetString.isEmpty() )
|
||||
sql += " where " + mSubsetString;
|
||||
|
||||
ret = sqlite3_get_table( sqliteHandle, sql.toUtf8().constData(), &results, &rows, &columns, &errMsg );
|
||||
if ( ret != SQLITE_OK )
|
||||
goto error;
|
||||
if ( rows != 1 )
|
||||
;
|
||||
else
|
||||
{
|
||||
for ( i = 1; i <= rows; i++ )
|
||||
{
|
||||
fType = results[( 1 * columns ) + 0];
|
||||
}
|
||||
}
|
||||
sqlite3_free_table( results );
|
||||
}
|
||||
|
||||
if ( fType == "POINT" )
|
||||
{
|
||||
geomType = QGis::WKBPoint;
|
||||
}
|
||||
else if ( fType == "MULTIPOINT" )
|
||||
{
|
||||
geomType = QGis::WKBMultiPoint;
|
||||
}
|
||||
else if ( fType == "LINESTRING" )
|
||||
{
|
||||
geomType = QGis::WKBLineString;
|
||||
}
|
||||
else if ( fType == "MULTILINESTRING" )
|
||||
{
|
||||
geomType = QGis::WKBMultiLineString;
|
||||
}
|
||||
else if ( fType == "POLYGON" )
|
||||
{
|
||||
geomType = QGis::WKBPolygon;
|
||||
}
|
||||
else if ( fType == "MULTIPOLYGON" )
|
||||
{
|
||||
geomType = QGis::WKBMultiPolygon;
|
||||
}
|
||||
mSrid = xSrid.toInt();
|
||||
}
|
||||
|
||||
if ( geomType == QGis::WKBUnknown || mSrid < 0 )
|
||||
goto error;
|
||||
|
||||
return getSridDetails();
|
||||
|
||||
error:
|
||||
// unexpected error
|
||||
if ( errMsg != NULL )
|
||||
{
|
||||
QgsDebugMsg( QString( "SQL error: %1\n\n%2" ).arg( sql ).arg( errMsg ? QString::fromUtf8( errMsg ) : "unknown cause" ) );
|
||||
sqlite3_free( errMsg );
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool QgsSpatiaLiteProvider::getSridDetails()
|
||||
{
|
||||
int ret;
|
||||
@ -1891,8 +2140,10 @@ bool QgsSpatiaLiteProvider::getTableSummary()
|
||||
int columns;
|
||||
char *errMsg = NULL;
|
||||
|
||||
QString sql = QString( "SELECT Min(MbrMinX(\"%1\")), Min(MbrMinY(\"%1\")), "
|
||||
"Max(MbrMaxX(\"%1\")), Max(MbrMaxY(\"%1\")), Count(*) " "FROM \"%2\"" ).arg( mGeometryColumn ).arg( mTableName );
|
||||
QString sql = QString( "SELECT Min(MbrMinX(%1)), Min(MbrMinY(%1)), "
|
||||
"Max(MbrMaxX(%1)), Max(MbrMaxY(%1)), Count(*) " "FROM %2" )
|
||||
.arg( quotedIdentifier( mGeometryColumn ) )
|
||||
.arg( mQuery );
|
||||
|
||||
if ( !mSubsetString.isEmpty() )
|
||||
{
|
||||
|
||||
@ -257,6 +257,7 @@ class QgsSpatiaLiteProvider: public QgsVectorDataProvider
|
||||
void repaintRequested();
|
||||
|
||||
private:
|
||||
|
||||
/** loads fields from input file to member attributeFields */
|
||||
void loadFields();
|
||||
|
||||
@ -265,6 +266,10 @@ class QgsSpatiaLiteProvider: public QgsVectorDataProvider
|
||||
* Flag indicating if the layer data source is a valid SpatiaLite layer
|
||||
*/
|
||||
bool valid;
|
||||
/**
|
||||
* Flag indicating if the layer data source is based on a query
|
||||
*/
|
||||
bool isQuery;
|
||||
/**
|
||||
* Flag indicating if the layer data source is based on a plain Table
|
||||
*/
|
||||
@ -289,6 +294,10 @@ class QgsSpatiaLiteProvider: public QgsVectorDataProvider
|
||||
* Name of the table with no schema
|
||||
*/
|
||||
QString mTableName;
|
||||
/**
|
||||
* Name of the table or subquery
|
||||
*/
|
||||
QString mQuery;
|
||||
/**
|
||||
* Name of the primary key column in the table
|
||||
*/
|
||||
@ -363,6 +372,7 @@ class QgsSpatiaLiteProvider: public QgsVectorDataProvider
|
||||
bool getTableGeometryDetails();
|
||||
bool getViewGeometryDetails();
|
||||
bool getVShapeGeometryDetails();
|
||||
bool getQueryGeometryDetails();
|
||||
bool getSridDetails();
|
||||
bool getTableSummary();
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user