public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
// load FKs
try
{
MetadataItem obj = foreignKeys.Parent.Object;
string[] restrictions = new string[5];
restrictions[2] = obj.Name;
DataTable schemaTable = _connection.GetSchema(VistaDBConnection.SchemaConstants.SCHEMA_FOREIGNKEYCOLUMNS, restrictions);
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys, loadingOptions);
mrf.PkNameFieldName = "FKEY_TO_TABLE";
mrf.PkFieldName = "FKEY_TO_COLUMN";
mrf.FkFieldName = "FKEY_FROM_COLUMN";
mrf.ForeignKeyIdFieldName = "FKEY_TO_TABLE";
mrf.Datatable = schemaTable;
mrf.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
public override void LoadDatabases(MetadataList databases, MetadataLoadingOptions loadingOptions)
{
if (databases.Parent.Server == null)
{
if (!Connected)
{
Connect();
}
try
{
DataTable schemaTable = _connection.GetSchema("Databases");
using (MetadataNamespacesFetcherFromDatatable mdf = new MetadataNamespacesFetcherFromDatatable(databases, MetadataType.Database, loadingOptions))
{
mdf.Datatable = schemaTable;
mdf.NameFieldName = "database_name";
mdf.LoadMetadata();
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
// load FKs
try
{
MetadataItem obj = foreignKeys.Parent.Object;
string[] restrictions = new string[3];
restrictions[2] = obj.Name;
DataTable schemaTable = _connection.GetSchema("ForeignKeyColumns", restrictions);
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys, loadingOptions);
mrf.PkNameFieldName = "REFERENCED_TABLE_NAME";
mrf.PkFieldName = "REFERENCED_COLUMN_NAME";
mrf.FkFieldName = "COLUMN_NAME";
mrf.OrdinalFieldName = "ORDINAL_POSITION";
mrf.TrimSpaces = true;
mrf.Datatable = schemaTable;
mrf.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
private void createQueryBuilder(string connectionString, bool loadDefaultDatabaseOnly = false, bool loadSystemObjects = false, bool withFields = true)
{
this._qb = new QueryBuilder( )
{
SyntaxProvider = new SQLiteSyntaxProvider( ),
MetadataProvider = new SQLiteMetadataProvider( )
};
SQLiteConnectionParameters connParms = new SQLiteConnectionParameters( );
connParms.FileName = connectionString;
connParms.Password = "******";
//string cs = SQLiteConnectionProvider.GetConnectionString( connectionString );
string cs = @"Data Source=" + connectionString;//+ ";Version=3;";
this._qb.MetadataProvider.Connection = new System.Data.SQLite.SQLiteConnection(cs);
{
MetadataLoadingOptions loadingOptions = this._qb.SQLContext.MetadataContainer.LoadingOptions;
loadingOptions.LoadDefaultDatabaseOnly = loadDefaultDatabaseOnly;
loadingOptions.LoadSystemObjects = loadSystemObjects;
//loadingOptions.IncludeFilter.Types = MetadataType.Field;
//loadingOptions.ExcludeFilter.Schemas.Add("dbo");
}
//qb.InitializeDatabaseSchemaTree();
this._qb.MetadataContainer.LoadAll(withFields);
} // createQueryBuilder(...)
public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
MetadataItem obj = foreignKeys.Parent.Object;
if (obj.Server == null)
{
MetadataItem database = obj.Database;
try
{
string[] restrictions = new string[5];
restrictions[0] = database != null ? database.Name : null;
restrictions[2] = obj.Name;
DataTable schemaTable = _connection.GetSchema("ForeignKeys", restrictions);
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys, loadingOptions)
{
PkDatabaseFieldName = "FKEY_TO_CATALOG",
PkNameFieldName = "FKEY_TO_TABLE",
PkFieldName = "FKEY_TO_COLUMN",
FkFieldName = "FKEY_FROM_COLUMN",
OrdinalFieldName = "FKEY_FROM_ORDINAL_POSITION",
Datatable = schemaTable
};
mrf.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
private List <string> LoadMetadata(MetadataType type)
{
var loadingOptions = new MetadataLoadingOptions
{
LoadDefaultDatabaseOnly = type != MetadataType.Database,
LoadSystemObjects = true
};
var container = new MetadataContainer(TemporaryMetadataContainer.SQLContext)
{
LoadingOptions = loadingOptions
};
var list = new MetadataList(container);
list.Load(type, false);
//list.Load(MetadataType.Database, false);
//if (type == MetadataType.Schema)
//{
// var defaultDb = list.Databases.FirstOrDefault(x => x.Default);
// if (defaultDb != null)
// {
// defaultDb.Items.Load(type, false);
// list = defaultDb.Items;
// }
//}
return(list.Select(x => x.Name).ToList());
}
private void ClearFilters(MetadataLoadingOptions options)
{
options.ExcludeFilter.Objects.Clear();
options.IncludeFilter.Objects.Clear();
options.ExcludeFilter.Schemas.Clear();
options.IncludeFilter.Schemas.Clear();
}
protected override void OnClosing(CancelEventArgs e)
{
_loader?.Stop();
if (_isSaveChanges)
{
MetadataLoadingOptions loadingOptions = EditedMetadataContainer.LoadingOptions;
EditedMetadataContainer.Assign(TemporaryMetadataContainer);
EditedMetadataContainer.LoadingOptions = loadingOptions;
}
base.OnClosing(e);
}
private void LoadDatabaseList()
{
DefaultDatabase = null;
_databases = null;
if (Connection.MetadataProvider != null && Connection.SyntaxProvider.IsSupportDatabases())
{
_temporarySqlContext.MetadataProvider = Connection.MetadataProvider;
_temporarySqlContext.SyntaxProvider = Connection.SyntaxProvider;
MetadataLoadingOptions oldOptions = new MetadataLoadingOptions();
oldOptions.Assign(TemporaryMetadataContainer.LoadingOptions);
MetadataLoadingOptions tempOptions = new MetadataLoadingOptions
{
LoadDefaultDatabaseOnly = false,
LoadSystemObjects = true
};
try
{
TemporaryMetadataContainer.LoadingOptions = tempOptions;
MetadataList list = new MetadataList(TemporaryMetadataContainer);
list.Load(MetadataType.Database, false);
_databases = list.Databases;
}
finally
{
TemporaryMetadataContainer.LoadingOptions = oldOptions;
tempOptions.Dispose();
}
}
_wizardPageLoadOpts.ChecklistDatabases.Items.Clear();
if (_databases == null)
{
return;
}
foreach (MetadataNamespace database in _databases)
{
if (database.Default)
{
DefaultDatabase = database.Name;
}
_wizardPageLoadOpts.ChecklistDatabases.Items.Add(new DatabaseObjectForListbox(database.Name, database.Default));
}
}
public override void LoadDatabases(MetadataList databases, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
// load from OLEDB catalogs
try
{
DataTable schemaTable = _connection.GetSchema("Tables");
string databaseFieldName = "TABLE_CATALOG";
if (schemaTable.Columns[databaseFieldName] == null)
{
databaseFieldName = "TABLE_CAT";
}
using (MetadataNamespacesFetcherFromDatatable mdf =
new MetadataNamespacesFetcherFromDatatable(databases, MetadataType.Database, loadingOptions))
{
mdf.Datatable = schemaTable;
mdf.NameFieldName = databaseFieldName;
mdf.LoadMetadata();
}
}
catch
{
// loading from OLEDB catalog failed
}
// load default database
string currentDatabase = Connection.Database;
if (!string.IsNullOrEmpty(currentDatabase))
{
MetadataNamespace database = databases.FindItem <MetadataNamespace>(currentDatabase, MetadataType.Database);
if (database == null)
{
database = new MetadataNamespace(databases, MetadataType.Database);
database.Name = currentDatabase;
databases.Add(database);
}
database.Default = true;
}
}
public override void LoadSchemas(MetadataList schemas, MetadataLoadingOptions loadingOptions)
{
MetadataNamespace database = schemas.Parent.Database;
if (schemas.Parent.Server == null && database != null)
{
if (!Connected)
{
Connect();
}
try
{
string[] restrictions = new string[1];
restrictions[0] = database.Name;
using (DataTable schemaTable = _connection.GetSchema("Tables", restrictions))
{
using (MetadataNamespacesFetcherFromDatatable mdf =
new MetadataNamespacesFetcherFromDatatable(schemas, MetadataType.Schema, loadingOptions))
{
mdf.Datatable = schemaTable;
mdf.NameFieldName = "TABLE_SCHEMA";
mdf.LoadMetadata();
}
}
using (DataTable schemaTable = _connection.GetSchema("Views", restrictions))
{
using (MetadataNamespacesFetcherFromDatatable mdf =
new MetadataNamespacesFetcherFromDatatable(schemas, MetadataType.Schema, loadingOptions))
{
mdf.Datatable = schemaTable;
mdf.NameFieldName = "TABLE_SCHEMA";
mdf.LoadMetadata();
}
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
// --------------------------------------------------------------------------------------
internal void createQueryBuilder(string connectionString, bool loadDefaultDatabaseOnly, bool loadSystemObjects, bool withFields)
{
this._qb = new QueryBuilder()
{
SyntaxProvider = new MSSQLSyntaxProvider(),
MetadataProvider = new MSSQLMetadataProvider()
};
this._qb.MetadataProvider.Connection = new SqlConnection(connectionString);
{
MetadataLoadingOptions loadingOptions = this._qb.SQLContext.MetadataContainer.LoadingOptions;
loadingOptions.LoadDefaultDatabaseOnly = loadDefaultDatabaseOnly;
loadingOptions.LoadSystemObjects = loadSystemObjects;
//loadingOptions.IncludeFilter.Types = MetadataType.Field;
//loadingOptions.ExcludeFilter.Schemas.Add("dbo");
}
//qb.InitializeDatabaseSchemaTree();
this._qb.MetadataContainer.LoadAll(withFields);
} // createQueryBuilder(...)
private List <string> LoadMetadata(MetadataType type)
{
var loadingOptions = new MetadataLoadingOptions
{
LoadDefaultDatabaseOnly = type != MetadataType.Database,
LoadSystemObjects = true
};
var container = new MetadataContainer(TemporaryMetadataContainer.SQLContext)
{
LoadingOptions = loadingOptions
};
var list = new MetadataList(container);
list.Load(type, false);
return(list.Select(x => x.Name).ToList());
}
public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
// load FKs
try
{
MetadataItem obj = foreignKeys.Parent.Object;
MetadataItem database = obj.Database;
string[] restrictions = new string[2];
restrictions[0] = database != null ? database.Name : string.Empty;
restrictions[1] = obj.Name;
DataTable schemaTable = _connection.GetSchema("Foreign Key Columns", restrictions);
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys, loadingOptions);
if (foreignKeys.SQLContext.SyntaxProvider.IsSupportSchemas())
{
mrf.PkSchemaFieldName = "TABLE_SCHEMA";
}
else
{
mrf.PkDatabaseFieldName = "TABLE_SCHEMA";
}
mrf.PkNameFieldName = "TABLE_NAME";
mrf.PkFieldName = "COLUMN_NAME";
mrf.FkFieldName = "REFERENCED_COLUMN_NAME";
mrf.OrdinalFieldName = "ORDINAL_POSITION";
mrf.Datatable = schemaTable;
mrf.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
MetadataItem obj = foreignKeys.Parent.Object;
if (obj.Server == null)
{
MetadataItem schema = obj.Schema;
MetadataItem database = obj.Database;
try
{
object[] restrictions = new object[6];
restrictions[3] = database != null ? database.Name : null;
restrictions[4] = schema != null ? schema.Name : null;
restrictions[5] = obj.Name;
DataTable schemaTable = _connection.GetOleDbSchemaTable(OleDbSchemaGuid.Foreign_Keys, restrictions);
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys,
loadingOptions);
mrf.PkDatabaseFieldName = "PK_TABLE_CATALOG";
mrf.PkSchemaFieldName = "PK_TABLE_SCHEMA";
mrf.PkNameFieldName = "PK_TABLE_NAME";
mrf.PkFieldName = "PK_COLUMN_NAME";
mrf.FkFieldName = "FK_COLUMN_NAME";
mrf.OrdinalFieldName = "ORDINAL";
mrf.Datatable = schemaTable;
mrf.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
public override void LoadObjects(MetadataList objects, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
try
{
// load tables and views
DataTable schemaTable = _connection.GetSchema("Tables", null);
MetadataObjectFetcherFromDatatable mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "TABLE_NAME";
mof.TypeFieldName = "TABLE_TYPE";
mof.TableType = new string[] { "TABLE" };
mof.SystemTableType = new string[] { "SYSTEM_TABLE" };
mof.ViewType = new string[] { "VIEW" };
mof.TrimSpaces = true;
mof.Datatable = schemaTable;
mof.LoadMetadata();
// load procedures
schemaTable = _connection.GetSchema("Procedures", null);
mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "PROCEDURE_NAME";
mof.SystemFieldName = "IS_SYSTEM_PROCEDURE";
mof.SystemFieldValue = 1;
mof.TrimSpaces = true;
mof.Datatable = schemaTable;
mof.DefaultObjectType = MetadataType.Procedure;
mof.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
public override void LoadObjects(MetadataList objects, MetadataLoadingOptions loadingOptions)
{
MetadataItem obj = objects.Parent;
if (obj.Schema == null && obj.Database == null && obj.Server == null)
{
if (!Connected)
{
Connect();
}
try
{
// load tables
DataTable schemaTable = _connection.GetSchema(VistaDBConnection.SchemaConstants.SCHEMA_TABLES);
MetadataObjectFetcherFromDatatable mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "TABLE_NAME";
mof.TypeFieldName = "TABLE_TYPE";
mof.TableType = new string[] { VistaDBConnection.UserTableType };
mof.SystemTableType = new string[] { VistaDBConnection.SystemTableType };
mof.Datatable = schemaTable;
mof.LoadMetadata();
// load views
schemaTable = _connection.GetSchema(VistaDBConnection.SchemaConstants.SCHEMA_VIEWS, null);
mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "TABLE_NAME";
mof.Datatable = schemaTable;
mof.DefaultObjectType = MetadataType.View;
mof.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
public override void LoadObjects(MetadataList objects, MetadataLoadingOptions loadingOptions)
{
MetadataNamespace database = objects.Parent.Database;
MetadataNamespace schema = objects.Parent.Schema;
if (objects.Parent.Server == null && database != null && schema != null)
{
if (!Connected)
{
Connect();
}
try
{
string[] restrictions = new string[2];
restrictions[0] = database.Name;
restrictions[1] = schema.Name;
using (DataTable schemaTable = _connection.GetSchema("Tables", restrictions))
{
MetadataObjectFetcherFromDatatable mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.Datatable = schemaTable;
mof.NameFieldName = "TABLE_NAME";
mof.TypeFieldName = "TABLE_TYPE";
mof.TableType = "BASE TABLE";
mof.ViewType = "VIEW";
mof.DefaultObjectType = MetadataType.Table;
mof.LoadMetadata();
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
MetadataItem obj = foreignKeys.Parent.Object;
if (obj.Server == null)
{
MetadataItem schema = obj.Schema;
MetadataItem database = obj.Database;
try
{
string[] restrictions = new string[6];
restrictions[3] = database != null ? database.Name : null;
restrictions[4] = schema != null ? schema.Name : null;
restrictions[5] = obj.Name;
DataTable schemaTable = _connection.GetSchema("ForeignKeys", restrictions);
if (schemaTable.Columns.Contains("PKTABLE_NAME") && schemaTable.Columns.Contains("PKCOLUMN_NAME") && schemaTable.Columns.Contains("FKCOLUMN_NAME"))
{
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys, loadingOptions);
mrf.PkDatabaseFieldName = "PKTABLE_CAT";
mrf.PkSchemaFieldName = "PKTABLE_SCHEM";
mrf.PkNameFieldName = "PKTABLE_NAME";
mrf.PkFieldName = "PKCOLUMN_NAME";
mrf.FkFieldName = "FKCOLUMN_NAME";
mrf.OrdinalFieldName = "KEY_SEQ";
mrf.Datatable = schemaTable;
mrf.LoadMetadata();
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
}
public override void LoadForeignKeys(MetadataList foreignKeys, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
MetadataItem obj = foreignKeys.Parent.Object;
MetadataItem schema = obj.Schema;
MetadataItem database = obj.Database;
try
{
string[] restrictions = new string[6];
restrictions[3] = database != null ? database.Name : null;
restrictions[4] = schema != null ? schema.Name : null;
restrictions[5] = obj.Name;
DataTable schemaTable = _connection.GetSchema(DB2MetaDataCollectionNames.ForeignKeys, restrictions);
MetadataForeignKeysFetcherFromDatatable mrf = new MetadataForeignKeysFetcherFromDatatable(foreignKeys, loadingOptions);
mrf.PkSchemaFieldName = "PKTABLE_SCHEMA";
mrf.PkDatabaseFieldName = "PKTABLE_CATALOG";
mrf.PkNameFieldName = "PKTABLE_NAME";
mrf.FkFieldName = "FKTABLE_NAME";
mrf.PkFieldName = "PKCOLUMN_NAME";
mrf.FkFieldName = "FKCOLUMN_NAME";
mrf.OrdinalFieldName = "KEY_SEQ";
mrf.Datatable = schemaTable;
mrf.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
public override void LoadFields(MetadataList fields, MetadataLoadingOptions loadingOptions)
{
MetadataItem obj = fields.Parent.Object;
MetadataNamespace schema = obj.Schema;
MetadataNamespace database = obj.Database;
if (schema != null && database != null && obj.Server == null)
{
string[] restrictions = new string[3];
restrictions[0] = database.Name;
restrictions[1] = schema.Name;
restrictions[2] = obj.Name;
using (DataTable dataTable = _connection.GetSchema("Columns", restrictions))
{
MetadataFieldsFetcherFromDatatable mff = new MetadataFieldsFetcherFromDatatable(fields.SQLContext);
mff.Datatable = dataTable;
mff.NameFieldName = "COLUMN_NAME";
mff.NullableFieldName = "IS_NULLABLE";
mff.NullableValue = "YES";
mff.ServerTypeFieldName = "DATA_TYPE";
mff.SizeFieldName = "CHARACTER_MAXIMUM_LENGTH";
mff.PrecisionFieldName = "NUMERIC_PRECISION";
mff.ScaleFieldName = "NUMERIC_SCALE";
mff.DefaultValueFieldName = "COLUMN_DEFAULT";
mff.LoadFields(fields);
}
base.LoadFields(fields, loadingOptions);
}
}
public override void LoadObjects(MetadataList objects, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
try
{
// load tables
DataTable schemaTable = _connection.GetSchema("Tables");
MetadataObjectFetcherFromDatatable mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "TABLE_NAME";
mof.TypeFieldName = "TABLE_TYPE";
mof.TableType = new string[] { "TABLE" };
mof.SystemTableType = new string[] { "SYSTEM TABLE" };
mof.Datatable = schemaTable;
mof.LoadMetadata();
// load views
schemaTable = _connection.GetSchema("Views");
mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "TABLE_NAME";
mof.DefaultObjectType = MetadataType.View;
mof.Datatable = schemaTable;
mof.LoadMetadata();
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
public override void LoadDatabases(MetadataList databases, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
try
{
MetadataNamespacesFetcherFromDatatable mnf = new MetadataNamespacesFetcherFromDatatable(databases, MetadataType.Database, loadingOptions);
mnf.NameFieldName = "TABLE_CAT";
using (DataTable schemaTable = _connection.GetSchema("Tables"))
{
// pre-ODBC v3
if (schemaTable.Columns.IndexOf("TABLE_CAT") == -1)
{
// ODBC v2
if (schemaTable.Columns.IndexOf("TABLE_QUALIFIER") != -1)
{
mnf.NameFieldName = "TABLE_QUALIFIER";
}
// ODBC v1?
else if (schemaTable.Columns.IndexOf("QUALIFIERNAME") != -1)
{
mnf.NameFieldName = "QUALIFIERNAME";
}
}
mnf.Datatable = schemaTable;
mnf.LoadMetadata();
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
public override void LoadDatabases(MetadataList databases, MetadataLoadingOptions loadingOptions)
{
if (databases.Parent.Server == null)
{
if (!Connected)
{
Connect();
}
string currentDatabase = Connection.Database;
if (!String.IsNullOrEmpty(currentDatabase))
{
MetadataNamespace database = databases.FindItem <MetadataNamespace>(currentDatabase, MetadataType.Database);
if (database == null)
{
database = new MetadataNamespace(databases, MetadataType.Database);
database.Name = currentDatabase;
databases.Add(database);
}
database.Default = true;
}
}
}
public override void LoadFields(MetadataList fields, MetadataLoadingOptions loadingOptions)
{
base.LoadFields(fields, loadingOptions);
LoadFieldsFromGetSchema(fields, loadingOptions);
}
private void LoadFieldsFromGetSchema(MetadataList fields, MetadataLoadingOptions loadingOptions)
{
SQLContext sqlContext = fields.SQLContext;
string olddb = Connection.Database;
try
{
// load tables
string[] restrictions = new string[3];
if (sqlContext.SyntaxProvider.IsSupportDatabases())
{
MetadataNamespace database = fields.Parent.Database;
if (database != null)
{
restrictions[0] = database.Name;
}
else
{
return;
}
}
else
{
restrictions[0] = null;
}
if (sqlContext.SyntaxProvider.IsSupportSchemas())
{
MetadataNamespace schema = fields.Parent.Schema;
if (schema != null)
{
restrictions[1] = schema.Name;
}
else
{
return;
}
}
else
{
restrictions[1] = null;
}
MetadataObject obj = fields.Parent.Object;
if (obj == null)
{
return;
}
restrictions[2] = obj.Name;
try
{
if (!string.IsNullOrEmpty(restrictions[0]) && Connection.Database != restrictions[0])
{
Connection.ChangeDatabase(restrictions[0]);
}
DataTable schemaTable = _connection.GetSchema("Columns", restrictions);
schemaTable.DefaultView.Sort = "ORDINAL_POSITION";
DataTable ordinalSortedColumns = schemaTable.DefaultView.ToTable();
MetadataFieldsFetcherFromDatatable mof = new MetadataFieldsFetcherFromDatatable(sqlContext);
mof.NameFieldName = "COLUMN_NAME";
mof.ServerTypeFieldName = "TYPE_NAME";
mof.SizeFieldName = "COLUMN_SIZE";
mof.ScaleFieldName = "DECIMAL_DIGITS";
mof.DescriptionFieldName = "REMARKS";
mof.Datatable = ordinalSortedColumns;
mof.LoadFields(fields);
}
catch
{
// loading from OLEDB catalog failed
}
}
finally
{
if (Connection.Database != olddb)
{
Connection.ChangeDatabase(olddb);
}
}
}
public override void LoadObjects(MetadataList objects, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
SQLContext sqlContext = objects.SQLContext;
string olddb = Connection.Database;
try
{
try
{
// load tables
string[] restrictions = new string[2];
if (sqlContext.SyntaxProvider.IsSupportDatabases())
{
MetadataNamespace database = objects.Parent.Database;
if (database != null)
{
restrictions[0] = database.Name;
}
else
{
return;
}
}
else
{
restrictions[0] = null;
}
if (sqlContext.SyntaxProvider.IsSupportSchemas())
{
MetadataNamespace schema = objects.Parent.Schema;
if (schema != null)
{
restrictions[1] = schema.Name;
}
else
{
return;
}
}
else
{
restrictions[1] = null;
}
MetadataObjectFetcherFromDatatable mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions);
mof.NameFieldName = "TABLE_NAME";
mof.TypeFieldName = "TABLE_TYPE";
mof.TableType = new string[] { "TABLE", "LINK", "PASS-THROUGH", "SYNONYM" };
mof.SystemTableType = new string[] { "SYSTEM TABLE", "ACCESS TABLE" };
mof.ViewType = new string[] { "VIEW" };
mof.SystemViewType = "SYSTEM VIEW";
using (DataTable schemaTable = _connection.GetSchema("Tables", restrictions))
{
// hack for old outdated ODBC drivers which uses TABLENAME instead TABLE_NAME
if (schemaTable.Columns.IndexOf("TABLENAME") != -1)
{
mof.NameFieldName = "TABLENAME";
}
// hack for old outdated ODBC drivers which uses TABLETYPE instead TABLE_TYPE
if (schemaTable.Columns.IndexOf("TABLETYPE") != -1)
{
mof.NameFieldName = "TABLETYPE";
}
mof.DefaultObjectType = MetadataType.Table;
mof.Datatable = schemaTable;
mof.LoadMetadata();
}
using (DataTable schemaTable = _connection.GetSchema("Views", restrictions))
{
// hack for old outdated ODBC drivers which uses TABLENAME instead TABLE_NAME
if (schemaTable.Columns.IndexOf("TABLENAME") != -1)
{
mof.NameFieldName = "TABLENAME";
}
// hack for old outdated ODBC drivers which uses TABLETYPE instead TABLE_TYPE
if (schemaTable.Columns.IndexOf("TABLETYPE") != -1)
{
mof.NameFieldName = "TABLETYPE";
}
mof.DefaultObjectType = MetadataType.View;
mof.Datatable = schemaTable;
mof.LoadMetadata();
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
finally
{
if (Connection.Database != olddb)
{
Connection.ChangeDatabase(olddb);
}
}
}
public override void LoadSchemas(MetadataList schemas, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
SQLContext sqlContext = schemas.SQLContext;
string olddb = Connection.Database;
try
{
try
{
// load tables
string[] restrictions = new string[1];
if (sqlContext.SyntaxProvider.IsSupportDatabases())
{
MetadataNamespace database = schemas.Parent.Database;
if (database != null)
{
restrictions[0] = database.Name;
}
else
{
return;
}
}
else
{
restrictions[0] = null;
}
DataTable schemaTable = _connection.GetSchema("Tables", restrictions);
DataColumn schemaColumn = (schemaTable.Columns["TABLE_SCHEM"] ??
schemaTable.Columns["TABLE_OWNER"]) ??
schemaTable.Columns["TABLEOWNER"] ??
schemaTable.Columns["OWNERNAME"];
if (schemaColumn == null)
{
return;
}
using (MetadataNamespacesFetcherFromStringList mnf = new MetadataNamespacesFetcherFromStringList(schemas, MetadataType.Schema, loadingOptions))
{
for (int i = 0; i < schemaTable.Rows.Count; i++)
{
DataRow currentRow = schemaTable.Rows[i];
if (!currentRow.IsNull(schemaColumn))
{
string schemaName = Convert.ToString(currentRow[schemaColumn]);
if (mnf.AllNamespaces.IndexOf(schemaName) == -1)
{
mnf.AllNamespaces.Add(schemaName);
}
}
}
if (mnf.AllNamespaces.Count > 1 ||
mnf.AllNamespaces.Count == 1 && !string.IsNullOrEmpty(mnf.AllNamespaces[0]))
{
mnf.LoadMetadata();
}
}
}
catch (Exception exception)
{
throw new QueryBuilderException(exception.Message, exception);
}
}
finally
{
if (Connection.Database != olddb)
{
Connection.ChangeDatabase(olddb);
}
}
}
public override void LoadObjects(MetadataList objects, MetadataLoadingOptions loadingOptions)
{
if (!Connected)
{
Connect();
}
SQLContext sqlContext = objects.SQLContext;
string olddb = Connection.Database;
try
{
// load tables
string[] restrictions = new string[4];
if (sqlContext.SyntaxProvider.IsSupportDatabases())
{
MetadataNamespace database = objects.Parent.Database;
if (database != null)
{
restrictions[0] = database.Name;
}
else
{
return;
}
}
else
{
restrictions[0] = null;
}
if (sqlContext.SyntaxProvider.IsSupportSchemas())
{
MetadataNamespace schema = objects.Parent.Schema;
if (schema != null)
{
restrictions[1] = schema.Name;
}
else
{
return;
}
}
else
{
restrictions[1] = null;
}
try
{
if (!string.IsNullOrEmpty(restrictions[0]) && Connection.Database != restrictions[0])
{
Connection.ChangeDatabase(restrictions[0]);
}
DataTable schemaTable = _connection.GetSchema("Tables", restrictions);
MetadataObjectFetcherFromDatatable mof = new MetadataObjectFetcherFromDatatable(objects, loadingOptions)
{
NameFieldName = "TABLE_NAME",
TypeFieldName = "TABLE_TYPE",
TableType = new[]
{
"TABLE",
"LINK",
"PASS-THROUGH",
"SYNONYM",
"BASE TABLE"
},
SystemTableType = new[]
{
"SYSTEM TABLE",
"ACCESS TABLE"
},
ViewType = "VIEW",
SystemViewType = "SYSTEM VIEW",
SynonymType = "ALIAS",
Datatable = schemaTable
};
mof.LoadMetadata();
}
catch
{
// loading from OLEDB catalog failed
}
}
finally
{
if (Connection.Database != olddb)
{
Connection.ChangeDatabase(olddb);
}
}
}
public override bool GetReferencingObjectNames(UpdatableObjectList <MetadataQualifiedName> list, MetadataObject forObject, MetadataLoadingOptions loadingOptions)
{
if (forObject.Server == null)
{
MetadataNamespace database = forObject.Database;
MetadataNamespace schema = forObject.Schema;
string[] restrictions = new string[6];
restrictions[0] = database != null ? database.Name : null;
restrictions[1] = schema != null ? schema.Name : null;
restrictions[2] = forObject.Name;
using (DataTable foreignKeys = _connection.GetSchema("ForeignKeys", restrictions))
{
int databaseField = foreignKeys.Columns.IndexOf("FKTABLE_CAT");
int schemaField = foreignKeys.Columns.IndexOf("FKTABLE_SCHEM");
int nameField = foreignKeys.Columns.IndexOf("FKTABLE_NAME");
foreach (DataRow row in foreignKeys.Rows)
{
object referencingName = nameField != -1 ? row[nameField] : null;
object referencingSchema = schemaField != -1 ? row[schemaField] : null;
object referencingDatabase = databaseField != -1 ? row[databaseField] : null;
MetadataQualifiedName name = new MetadataQualifiedName();
if (referencingName != null)
{
name.Add(referencingName.ToString(), MetadataType.Objects);
}
if (referencingSchema != null)
{
name.Add(referencingSchema.ToString(), MetadataType.Schema);
}
if (referencingDatabase != null)
{
name.Add(referencingDatabase.ToString(), MetadataType.Schema);
}
list.Add(name);
}
return(true);
}
}
return(false);
}
