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Overview
Comment: | Lots of schema fixes and support for new 3.3.4 stuff |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | sourceforge |
Files: | files | file ages | folders |
SHA1: |
9e6e1cf6df37dde6a18f85f6477c7852 |
User & Date: | rmsimpson 2006-02-10 19:44:19 |
Context
2006-02-10
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19:44 | Changes due to 3.3.4 check-in: 917fbb8c4d user: rmsimpson tags: sourceforge | |
19:44 | Lots of schema fixes and support for new 3.3.4 stuff check-in: 9e6e1cf6df user: rmsimpson tags: sourceforge | |
15:08 | Fixed a dispose issue for commands with active readers check-in: 505e5291d5 user: rmsimpson tags: sourceforge | |
Changes
Changes to System.Data.SQLite/SQLite3.cs.
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for (int n = 0; n < x; n++) { if (String.Compare(columnName, ColumnName(stmt, n), true, CultureInfo.InvariantCulture) == 0) return n; } return -1; } internal override double GetDouble(SQLiteStatement stmt, int index) { double value; UnsafeNativeMethods.sqlite3_column_double_interop(stmt._sqlite_stmt, index, out value); return value; } ................................................................................ } internal override int AggregateContext(int context) { return UnsafeNativeMethods.sqlite3_aggregate_context_interop(context, 1); } internal override void SetRealColNames(bool bOn) { UnsafeNativeMethods.sqlite3_realcolnames(_sql, Convert.ToInt32(bOn)); } internal override void SetPassword(byte[] passwordBytes) { int n = UnsafeNativeMethods.sqlite3_key_interop(_sql, passwordBytes, passwordBytes.Length); if (n > 0) throw new SQLiteException(n, SQLiteLastError()); } |
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for (int n = 0; n < x; n++) { if (String.Compare(columnName, ColumnName(stmt, n), true, CultureInfo.InvariantCulture) == 0) return n; } return -1; } internal override string ColumnOriginalName(SQLiteStatement stmt, int index) { int len; return ToString(UnsafeNativeMethods.sqlite3_column_origin_name_interop(stmt._sqlite_stmt, index, out len), len); } internal override string ColumnDatabaseName(SQLiteStatement stmt, int index) { int len; return ToString(UnsafeNativeMethods.sqlite3_column_database_name_interop(stmt._sqlite_stmt, index, out len), len); } internal override string ColumnTableName(SQLiteStatement stmt, int index) { int len; return ToString(UnsafeNativeMethods.sqlite3_column_table_name_interop(stmt._sqlite_stmt, index, out len), len); } internal override void ColumnMetaData(string dataBase, string table, string column, out string dataType, out string collateSequence, out bool notNull, out bool primaryKey, out bool autoIncrement) { IntPtr dataTypePtr; IntPtr collSeqPtr; int dtLen; int csLen; int nnotNull; int nprimaryKey; int nautoInc; int n; n = UnsafeNativeMethods.sqlite3_table_column_metadata_interop(_sql, ToUTF8(dataBase), ToUTF8(table), ToUTF8(column), out dataTypePtr, out collSeqPtr, out nnotNull, out nprimaryKey, out nautoInc, out dtLen, out csLen); if (n > 0) throw new SQLiteException(n, SQLiteLastError()); dataType = base.ToString(dataTypePtr, dtLen); collateSequence = base.ToString(collSeqPtr, csLen); notNull = (nnotNull == 1); primaryKey = (nprimaryKey == 1); autoIncrement = (nautoInc == 1); } internal override double GetDouble(SQLiteStatement stmt, int index) { double value; UnsafeNativeMethods.sqlite3_column_double_interop(stmt._sqlite_stmt, index, out value); return value; } ................................................................................ } internal override int AggregateContext(int context) { return UnsafeNativeMethods.sqlite3_aggregate_context_interop(context, 1); } //internal override void SetRealColNames(bool bOn) //{ // UnsafeNativeMethods.sqlite3_realcolnames(_sql, Convert.ToInt32(bOn)); //} internal override void SetPassword(byte[] passwordBytes) { int n = UnsafeNativeMethods.sqlite3_key_interop(_sql, passwordBytes, passwordBytes.Length); if (n > 0) throw new SQLiteException(n, SQLiteLastError()); } |
Changes to System.Data.SQLite/SQLite3_UTF16.cs.
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case TypeAffinity.Blob: return "BLOB"; default: return "TEXT"; } } } internal override int CreateFunction(string strFunction, int nArgs, SQLiteCallback func, SQLiteCallback funcstep, SQLiteCallback funcfinal) { int nCookie; int n = UnsafeNativeMethods.sqlite3_create_function16_interop(_sql, strFunction, nArgs, 4, func, funcstep, funcfinal, out nCookie); if (n > 0) throw new SQLiteException(n, SQLiteLastError()); |
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case TypeAffinity.Blob: return "BLOB"; default: return "TEXT"; } } } internal override string ColumnOriginalName(SQLiteStatement stmt, int index) { int len; return ToString(UnsafeNativeMethods.sqlite3_column_origin_name16_interop(stmt._sqlite_stmt, index, out len), len); } internal override string ColumnDatabaseName(SQLiteStatement stmt, int index) { int len; return ToString(UnsafeNativeMethods.sqlite3_column_database_name16_interop(stmt._sqlite_stmt, index, out len), len); } internal override string ColumnTableName(SQLiteStatement stmt, int index) { int len; return ToString(UnsafeNativeMethods.sqlite3_column_table_name16_interop(stmt._sqlite_stmt, index, out len), len); } internal override int CreateFunction(string strFunction, int nArgs, SQLiteCallback func, SQLiteCallback funcstep, SQLiteCallback funcfinal) { int nCookie; int n = UnsafeNativeMethods.sqlite3_create_function16_interop(_sql, strFunction, nArgs, 4, func, funcstep, funcfinal, out nCookie); if (n > 0) throw new SQLiteException(n, SQLiteLastError()); |
Changes to System.Data.SQLite/SQLiteBase.cs.
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/// of subsequently-prepared statements to return in Database.Table.Column format, ignoring all aliases that may have been applied
/// to tables or columns in a resultset.
/// </summary>
/// <remarks>
/// All statements prepared on this connection after this flag is changed are affected. Existing statements are not.
/// </remarks>
/// <param name="bOn">Set to True to enable real column names, false to disable them.</param>
internal abstract void SetRealColNames(bool bOn);
internal abstract void Bind_Double(SQLiteStatement stmt, int index, double value);
internal abstract void Bind_Int32(SQLiteStatement stmt, int index, Int32 value);
internal abstract void Bind_Int64(SQLiteStatement stmt, int index, Int64 value);
internal abstract void Bind_Text(SQLiteStatement stmt, int index, string value);
internal abstract void Bind_Blob(SQLiteStatement stmt, int index, byte[] blobData);
internal abstract void Bind_DateTime(SQLiteStatement stmt, int index, DateTime dt);
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internal abstract string Bind_ParamName(SQLiteStatement stmt, int index);
internal abstract int Bind_ParamIndex(SQLiteStatement stmt, string paramName);
internal abstract int ColumnCount(SQLiteStatement stmt);
internal abstract string ColumnName(SQLiteStatement stmt, int index);
internal abstract string ColumnType(SQLiteStatement stmt, int index, out TypeAffinity nAffinity);
internal abstract int ColumnIndex(SQLiteStatement stmt, string columnName);
internal abstract double GetDouble(SQLiteStatement stmt, int index);
internal abstract Int32 GetInt32(SQLiteStatement stmt, int index);
internal abstract Int64 GetInt64(SQLiteStatement stmt, int index);
internal abstract string GetText(SQLiteStatement stmt, int index);
internal abstract long GetBytes(SQLiteStatement stmt, int index, int nDataoffset, byte[] bDest, int nStart, int nLength);
internal abstract long GetChars(SQLiteStatement stmt, int index, int nDataoffset, char[] bDest, int nStart, int nLength);
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/// of subsequently-prepared statements to return in Database.Table.Column format, ignoring all aliases that may have been applied /// to tables or columns in a resultset. /// </summary> /// <remarks> /// All statements prepared on this connection after this flag is changed are affected. Existing statements are not. /// </remarks> /// <param name="bOn">Set to True to enable real column names, false to disable them.</param> //internal abstract void SetRealColNames(bool bOn); internal abstract void Bind_Double(SQLiteStatement stmt, int index, double value); internal abstract void Bind_Int32(SQLiteStatement stmt, int index, Int32 value); internal abstract void Bind_Int64(SQLiteStatement stmt, int index, Int64 value); internal abstract void Bind_Text(SQLiteStatement stmt, int index, string value); internal abstract void Bind_Blob(SQLiteStatement stmt, int index, byte[] blobData); internal abstract void Bind_DateTime(SQLiteStatement stmt, int index, DateTime dt); ................................................................................ internal abstract string Bind_ParamName(SQLiteStatement stmt, int index); internal abstract int Bind_ParamIndex(SQLiteStatement stmt, string paramName); internal abstract int ColumnCount(SQLiteStatement stmt); internal abstract string ColumnName(SQLiteStatement stmt, int index); internal abstract string ColumnType(SQLiteStatement stmt, int index, out TypeAffinity nAffinity); internal abstract int ColumnIndex(SQLiteStatement stmt, string columnName); internal abstract string ColumnOriginalName(SQLiteStatement stmt, int index); internal abstract string ColumnDatabaseName(SQLiteStatement stmt, int index); internal abstract string ColumnTableName(SQLiteStatement stmt, int index); internal abstract void ColumnMetaData(string dataBase, string table, string column, out string dataType, out string collateSequence, out bool notNull, out bool primaryKey, out bool autoIncrement); internal abstract double GetDouble(SQLiteStatement stmt, int index); internal abstract Int32 GetInt32(SQLiteStatement stmt, int index); internal abstract Int64 GetInt64(SQLiteStatement stmt, int index); internal abstract string GetText(SQLiteStatement stmt, int index); internal abstract long GetBytes(SQLiteStatement stmt, int index, int nDataoffset, byte[] bDest, int nStart, int nLength); internal abstract long GetChars(SQLiteStatement stmt, int index, int nDataoffset, char[] bDest, int nStart, int nLength); |
Changes to System.Data.SQLite/SQLiteConnection.cs.
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if (restrictionValues == null) restrictionValues = new string[0]; switch (collectionName.ToUpper(CultureInfo.InvariantCulture)) { case "METADATACOLLECTIONS": return Schema_MetaDataCollections(); case "DATASOURCEINFORMATION": return Schema_DataSourceInformation(); //case "RESERVEDWORDS": // return Schema_ReservedWords(); case "DATATYPES": return Schema_DataTypes(); case "COLUMNS": return Schema_Columns(parms[0], parms[2], parms[3]); case "INDEXES": return Schema_Indexes(parms[0], parms[2], parms[4]); case "INDEXCOLUMNS": ................................................................................ { if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0) { using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this)) { using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly)) { using (DataTable tblSchema = rd.GetSchemaTable()) { foreach (DataRow schemaRow in tblSchema.Rows) { if (String.Compare(schemaRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0 || strColumn == null) { row = tbl.NewRow(); ................................................................................ { if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0) { using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}]", rdTables.GetString(2)), this)) { using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly)) { tblSchema = rdTable.GetSchemaTable(); foreach (DataRow schemaRow in tblSchema.Rows) { if (Convert.ToBoolean(schemaRow[SchemaTableColumn.IsKey], CultureInfo.CurrentCulture) == true) { row = tbl.NewRow(); row["TABLE_CATALOG"] = strCatalog; row["TABLE_NAME"] = rdTables.GetString(2); row["INDEX_CATALOG"] = strCatalog; row["INDEX_NAME"] = String.Format(CultureInfo.InvariantCulture, "PK_{0}_{1}", rdTables.GetString(2), schemaRow[SchemaTableColumn.BaseColumnName]); row["PRIMARY_KEY"] = true; row["UNIQUE"] = true; if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, row["INDEX_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0) { tbl.Rows.Add(row); } } } } } using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_list([{1}])", strCatalog, rdTables.GetString(2)), this)) { ................................................................................ { if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0) { using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}]", rdTables.GetString(2)), this)) { using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly)) { tblSchema = rdTable.GetSchemaTable(); foreach (DataRow schemaRow in tblSchema.Rows) { if (Convert.ToBoolean(schemaRow[SchemaTableColumn.IsKey], CultureInfo.InvariantCulture) == true) { row = tbl.NewRow(); row["CONSTRAINT_CATALOG"] = strCatalog; row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "PK_{0}_{1}", rdTables.GetString(2), schemaRow[SchemaTableColumn.BaseColumnName]); row["TABLE_CATALOG"] = strCatalog; row["TABLE_NAME"] = rdTables.GetString(2); row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.BaseColumnName]; row["INDEX_NAME"] = row["CONSTRAINT_NAME"]; row["ORDINAL_POSITION"] = schemaRow[SchemaTableColumn.ColumnOrdinal]; if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, row["INDEX_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0) { tbl.Rows.Add(row); } } } } } ................................................................................ row["CONSTRAINT_NAME"] = rdIndexes.GetString(1); row["TABLE_CATALOG"] = strCatalog; row["TABLE_NAME"] = rdIndexes.GetString(2); row["COLUMN_NAME"] = rdIndex.GetString(2); row["INDEX_NAME"] = rdIndexes.GetString(1); row["ORDINAL_POSITION"] = rdIndex.GetInt32(1); tbl.Rows.Add(row); } } } } } } } ................................................................................ using (SQLiteCommand cmd = new SQLiteCommand(strSql, this)) { using (SQLiteDataReader rdViewSelect = cmdViewSelect.ExecuteReader(CommandBehavior.SchemaOnly)) { using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly)) { using (DataTable tblSchemaView = rdViewSelect.GetSchemaTable()) { using (DataTable tblSchema = rd.GetSchemaTable()) { for (n = 0; n < tblSchema.Rows.Count; n++) { viewRow = tblSchemaView.Rows[n]; schemaRow = tblSchema.Rows[n]; if (String.Compare(viewRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0 |
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if (restrictionValues == null) restrictionValues = new string[0]; switch (collectionName.ToUpper(CultureInfo.InvariantCulture)) { case "METADATACOLLECTIONS": return Schema_MetaDataCollections(); case "DATASOURCEINFORMATION": return Schema_DataSourceInformation(); case "DATATYPES": return Schema_DataTypes(); case "COLUMNS": return Schema_Columns(parms[0], parms[2], parms[3]); case "INDEXES": return Schema_Indexes(parms[0], parms[2], parms[4]); case "INDEXCOLUMNS": ................................................................................ { if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0) { using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this)) { using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly)) { using (DataTable tblSchema = rd.GetSchemaTable(false)) { foreach (DataRow schemaRow in tblSchema.Rows) { if (String.Compare(schemaRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0 || strColumn == null) { row = tbl.NewRow(); ................................................................................ { if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0) { using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}]", rdTables.GetString(2)), this)) { using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly)) { tblSchema = rdTable.GetSchemaTable(false); foreach (DataRow schemaRow in tblSchema.Rows) { if (Convert.ToBoolean(schemaRow[SchemaTableColumn.IsKey], CultureInfo.CurrentCulture) == true) { row = tbl.NewRow(); row["TABLE_CATALOG"] = strCatalog; row["TABLE_NAME"] = rdTables.GetString(2); row["INDEX_CATALOG"] = strCatalog; row["INDEX_NAME"] = String.Format(CultureInfo.InvariantCulture, "sqlite_master_PK_{0}", rdTables.GetString(2)); row["PRIMARY_KEY"] = true; row["UNIQUE"] = true; if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, row["INDEX_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0) { tbl.Rows.Add(row); break; } } } } } using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_list([{1}])", strCatalog, rdTables.GetString(2)), this)) { ................................................................................ { if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0) { using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}]", rdTables.GetString(2)), this)) { using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly)) { tblSchema = rdTable.GetSchemaTable(false); foreach (DataRow schemaRow in tblSchema.Rows) { if (Convert.ToBoolean(schemaRow[SchemaTableColumn.IsKey], CultureInfo.InvariantCulture) == true) { row = tbl.NewRow(); row["CONSTRAINT_CATALOG"] = strCatalog; row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "sqlite_master_PK_{0}", rdTables.GetString(2)); row["TABLE_CATALOG"] = strCatalog; row["TABLE_NAME"] = rdTables.GetString(2); row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.BaseColumnName]; row["INDEX_NAME"] = row["CONSTRAINT_NAME"]; row["ORDINAL_POSITION"] = schemaRow[SchemaTableColumn.ColumnOrdinal]; if ((String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, row["INDEX_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0) && (String.IsNullOrEmpty(strColumn) || String.Compare(strColumn, row["COLUMN_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)) { tbl.Rows.Add(row); } } } } } ................................................................................ row["CONSTRAINT_NAME"] = rdIndexes.GetString(1); row["TABLE_CATALOG"] = strCatalog; row["TABLE_NAME"] = rdIndexes.GetString(2); row["COLUMN_NAME"] = rdIndex.GetString(2); row["INDEX_NAME"] = rdIndexes.GetString(1); row["ORDINAL_POSITION"] = rdIndex.GetInt32(1); if (String.IsNullOrEmpty(strColumn) || String.Compare(strColumn, row["COLUMN_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0) tbl.Rows.Add(row); } } } } } } } ................................................................................ using (SQLiteCommand cmd = new SQLiteCommand(strSql, this)) { using (SQLiteDataReader rdViewSelect = cmdViewSelect.ExecuteReader(CommandBehavior.SchemaOnly)) { using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly)) { using (DataTable tblSchemaView = rdViewSelect.GetSchemaTable(false)) { using (DataTable tblSchema = rd.GetSchemaTable(false)) { for (n = 0; n < tblSchema.Rows.Count; n++) { viewRow = tblSchemaView.Rows[n]; schemaRow = tblSchema.Rows[n]; if (String.Compare(viewRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0 |
Changes to System.Data.SQLite/SQLiteDataReader.cs.
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/// <remarks> /// The current connection is cloned for the sake of executing this statement, so as to avoid any possibility of corrupting the /// original connection's existing statements or state. Any attached databases are re-attached to the new connection. /// </remarks> /// <returns>Returns a DataTable containing the schema information for the active SELECT statement being processed.</returns> public override DataTable GetSchemaTable() { CheckClosed(); DataTable tbl = new DataTable("SchemaTable"); string[] arName; string strTable; string strCatalog; DataRow row; tbl.Locale = CultureInfo.InvariantCulture; tbl.Columns.Add(SchemaTableColumn.ColumnName, typeof(String)); tbl.Columns.Add(SchemaTableColumn.ColumnOrdinal, typeof(int)); tbl.Columns.Add(SchemaTableColumn.ColumnSize, typeof(int)); tbl.Columns.Add(SchemaTableColumn.NumericPrecision, typeof(short)); tbl.Columns.Add(SchemaTableColumn.NumericScale, typeof(short)); ................................................................................ tbl.Columns.Add(SchemaTableOptionalColumn.ProviderSpecificDataType, typeof(Type)); tbl.Columns.Add(SchemaTableOptionalColumn.DefaultValue, typeof(object)); tbl.BeginLoadData(); SQLiteConnection cnn = (SQLiteConnection)_command.Connection; try { cnn._sql.SetRealColNames(true); // Create a new command based on the original. The only difference being that this new command returns // fully-qualified Database.Table.Column column names because of the above pragma using (SQLiteCommand cmd = (SQLiteCommand)_command.Clone()) { using (DbDataReader rd = cmd.ExecuteReader(CommandBehavior.SchemaOnly)) { // No need to Read() from this reader, we just want the column names for (int n = 0; n < _fieldCount; n++) { strTable = ""; strCatalog = "main"; row = tbl.NewRow(); // Default settings for the column row[SchemaTableColumn.ColumnName] = GetName(n); row[SchemaTableColumn.ColumnOrdinal] = n; row[SchemaTableColumn.ColumnSize] = 0; row[SchemaTableColumn.NumericPrecision] = 0; row[SchemaTableColumn.NumericScale] = 0; row[SchemaTableColumn.ProviderType] = GetSQLiteType(n).Type; row[SchemaTableColumn.IsLong] = (GetSQLiteType(n).Type == DbType.Binary); row[SchemaTableColumn.AllowDBNull] = true; row[SchemaTableOptionalColumn.IsReadOnly] = false; row[SchemaTableOptionalColumn.IsRowVersion] = false; row[SchemaTableColumn.IsUnique] = false; row[SchemaTableColumn.IsKey] = false; row[SchemaTableOptionalColumn.IsAutoIncrement] = false; row[SchemaTableOptionalColumn.IsReadOnly] = false; row[SchemaTableColumn.BaseColumnName] = GetName(n); // Try and extract the database, table and column from the datareader arName = rd.GetName(n).Split('\x01'); if (arName.Length > 1) strTable = arName[arName.Length - 2]; if (arName.Length > 2) strCatalog = arName[arName.Length - 3]; // If we have a table-bound column, extract the extra information from it if (arName.Length > 1) { using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{1}].TABLE_INFO([{0}])", strTable, strCatalog), cnn)) { if (arName.Length < 3) strCatalog = "main"; using (DbDataReader rdTable = cmdTable.ExecuteReader()) { while (rdTable.Read()) { if (String.Compare(arName[arName.Length - 1], rdTable.GetString(1), true, CultureInfo.InvariantCulture) == 0) { string strType = rdTable.GetString(2); string[] arSize = strType.Split('('); if (arSize.Length > 1) { strType = arSize[0]; arSize = arSize[1].Split(')'); if (arSize.Length > 1) row[SchemaTableColumn.ColumnSize] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture); } bool bNotNull = rdTable.GetBoolean(3); bool bPrimaryKey = rdTable.GetBoolean(5); row[SchemaTableColumn.DataType] = GetFieldType(n); row[SchemaTableColumn.BaseTableName] = strTable; row[SchemaTableColumn.BaseColumnName] = rdTable.GetString(1); if (String.IsNullOrEmpty(strCatalog) == false) { row[SchemaTableOptionalColumn.BaseCatalogName] = strCatalog; } row[SchemaTableColumn.AllowDBNull] = (!bNotNull && !bPrimaryKey); row[SchemaTableColumn.IsUnique] = bPrimaryKey; row[SchemaTableColumn.IsKey] = bPrimaryKey; row[SchemaTableOptionalColumn.IsAutoIncrement] = bPrimaryKey; if (rdTable.IsDBNull(4) == false) row[SchemaTableOptionalColumn.DefaultValue] = rdTable[4]; break; } } } } } tbl.Rows.Add(row); } } } } finally { cnn._sql.SetRealColNames(false); } tbl.AcceptChanges(); tbl.EndLoadData(); return tbl; } |
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/// <remarks> /// The current connection is cloned for the sake of executing this statement, so as to avoid any possibility of corrupting the /// original connection's existing statements or state. Any attached databases are re-attached to the new connection. /// </remarks> /// <returns>Returns a DataTable containing the schema information for the active SELECT statement being processed.</returns> public override DataTable GetSchemaTable() { return GetSchemaTable(true); } internal DataTable GetSchemaTable(bool wantUniqueInfo) { CheckClosed(); DataTable tbl = new DataTable("SchemaTable"); DataTable tblIndexes = null; DataTable tblIndexColumns; DataRow row; string temp; string strCatalog = ""; string strTable = ""; string strColumn = ""; tbl.Locale = CultureInfo.InvariantCulture; tbl.Columns.Add(SchemaTableColumn.ColumnName, typeof(String)); tbl.Columns.Add(SchemaTableColumn.ColumnOrdinal, typeof(int)); tbl.Columns.Add(SchemaTableColumn.ColumnSize, typeof(int)); tbl.Columns.Add(SchemaTableColumn.NumericPrecision, typeof(short)); tbl.Columns.Add(SchemaTableColumn.NumericScale, typeof(short)); ................................................................................ tbl.Columns.Add(SchemaTableOptionalColumn.ProviderSpecificDataType, typeof(Type)); tbl.Columns.Add(SchemaTableOptionalColumn.DefaultValue, typeof(object)); tbl.BeginLoadData(); SQLiteConnection cnn = (SQLiteConnection)_command.Connection; // Create a new command based on the original. The only difference being that this new command returns // fully-qualified Database.Table.Column column names because of the above pragma using (SQLiteCommand cmd = (SQLiteCommand)_command.Clone()) { using (DbDataReader rd = cmd.ExecuteReader(CommandBehavior.SchemaOnly)) { // No need to Read() from this reader, we just want the column names for (int n = 0; n < _fieldCount; n++) { row = tbl.NewRow(); // Default settings for the column row[SchemaTableColumn.ColumnName] = GetName(n); row[SchemaTableColumn.ColumnOrdinal] = n; row[SchemaTableColumn.ColumnSize] = 0; row[SchemaTableColumn.NumericPrecision] = 0; row[SchemaTableColumn.NumericScale] = 0; row[SchemaTableColumn.ProviderType] = GetSQLiteType(n).Type; row[SchemaTableColumn.IsLong] = (GetSQLiteType(n).Type == DbType.Binary); row[SchemaTableColumn.AllowDBNull] = true; row[SchemaTableOptionalColumn.IsReadOnly] = false; row[SchemaTableOptionalColumn.IsRowVersion] = false; row[SchemaTableColumn.IsUnique] = false; row[SchemaTableColumn.IsKey] = false; row[SchemaTableOptionalColumn.IsAutoIncrement] = false; row[SchemaTableOptionalColumn.IsReadOnly] = false; strColumn = _command.Connection._sql.ColumnOriginalName(_activeStatement, n); if (String.IsNullOrEmpty(strColumn) == false) row[SchemaTableColumn.BaseColumnName] = strColumn; temp = _command.Connection._sql.ColumnTableName(_activeStatement, n); if (String.IsNullOrEmpty(temp) == false) row[SchemaTableColumn.BaseTableName] = temp; temp = _command.Connection._sql.ColumnDatabaseName(_activeStatement, n); if (String.IsNullOrEmpty(temp) == false) row[SchemaTableOptionalColumn.BaseCatalogName] = temp; row[SchemaTableColumn.DataType] = GetFieldType(n); // If we have a table-bound column, extract the extra information from it if (String.IsNullOrEmpty(strColumn) == false) { using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].TABLE_INFO([{1}])", row[SchemaTableOptionalColumn.BaseCatalogName], row[SchemaTableColumn.BaseTableName] ), cnn)) { using (DbDataReader rdTable = cmdTable.ExecuteReader()) { while (rdTable.Read()) { if (String.Compare((string)row[SchemaTableColumn.BaseColumnName], rdTable.GetString(1), true, CultureInfo.InvariantCulture) == 0) { string strType = rdTable.GetString(2); string[] arSize = strType.Split('('); if (arSize.Length > 1) { strType = arSize[0]; arSize = arSize[1].Split(')'); if (arSize.Length > 1) row[SchemaTableColumn.ColumnSize] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture); } string collSeq; string dataType; bool bNotNull; bool bPrimaryKey; bool bAutoIncrement; _command.Connection._sql.ColumnMetaData( (string)row[SchemaTableOptionalColumn.BaseCatalogName], (string)row[SchemaTableColumn.BaseTableName], strColumn, out dataType, out collSeq, out bNotNull, out bPrimaryKey, out bAutoIncrement); if (bNotNull) row[SchemaTableColumn.AllowDBNull] = false; row[SchemaTableColumn.IsKey] = bPrimaryKey; row[SchemaTableOptionalColumn.IsAutoIncrement] = bAutoIncrement; if (rdTable.IsDBNull(4) == false) row[SchemaTableOptionalColumn.DefaultValue] = rdTable[4]; break; } } } } // Determine IsUnique properly, which is a pain in the butt! if (wantUniqueInfo) { if ((string)row[SchemaTableOptionalColumn.BaseCatalogName] != strCatalog || (string)row[SchemaTableColumn.BaseTableName] != strTable) { strCatalog = (string)row[SchemaTableOptionalColumn.BaseCatalogName]; strTable = (string)row[SchemaTableColumn.BaseTableName]; tblIndexes = _command.Connection.GetSchema("Indexes", new string[] { (string)row[SchemaTableOptionalColumn.BaseCatalogName], null, (string)row[SchemaTableColumn.BaseTableName], null }); } foreach (DataRow rowIndexes in tblIndexes.Rows) { tblIndexColumns = _command.Connection.GetSchema("IndexColumns", new string[] { (string)row[SchemaTableOptionalColumn.BaseCatalogName], null, (string)row[SchemaTableColumn.BaseTableName], (string)rowIndexes["INDEX_NAME"], null }); foreach (DataRow rowColumnIndex in tblIndexColumns.Rows) { if (String.Compare((string)rowColumnIndex["COLUMN_NAME"], strColumn, true, CultureInfo.InvariantCulture) == 0) { if (tblIndexColumns.Rows.Count == 1) row[SchemaTableColumn.IsUnique] = rowIndexes["UNIQUE"]; break; } } } } } tbl.Rows.Add(row); } } } tbl.AcceptChanges(); tbl.EndLoadData(); return tbl; } |
Changes to System.Data.SQLite/UnsafeNativeMethods.cs.
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[DllImport(SQLITE_DLL)] internal static extern int sqlite3_aggregate_context_interop(int context, int nBytes); [DllImport(SQLITE_DLL)] internal static extern void sqlite3_realcolnames(int db, int bset); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_text16_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL, CharSet = CharSet.Unicode)] internal static extern int sqlite3_open16_interop(string utf16Filename, out int db); [DllImport(SQLITE_DLL)] |
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[DllImport(SQLITE_DLL)] internal static extern int sqlite3_aggregate_context_interop(int context, int nBytes); [DllImport(SQLITE_DLL)] internal static extern void sqlite3_realcolnames(int db, int bset); [DllImport(SQLITE_DLL)] internal static extern int sqlite3_table_column_metadata_interop(int db, byte[] dbName, byte[] tblName, byte[] colName, out IntPtr ptrDataType, out IntPtr ptrCollSeq, out int notNull, out int primaryKey, out int autoInc, out int dtLen, out int csLen); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_database_name_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_database_name16_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_table_name_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_table_name16_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_origin_name_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_origin_name16_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL)] internal static extern IntPtr sqlite3_column_text16_interop(int stmt, int index, out int len); [DllImport(SQLITE_DLL, CharSet = CharSet.Unicode)] internal static extern int sqlite3_open16_interop(string utf16Filename, out int db); [DllImport(SQLITE_DLL)] |