System.Data.SQLite

Check-in [9f02226408]
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Overview
Comment:Improve handling of base catalog/table name in GetSchemaTable, pursuant to [baf42ee135].
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Timelines: family | ancestors | descendants | both | tkt-baf42ee135
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SHA1: 9f02226408326bdb57c08fdcf5f2556fcb4e3cbf
User & Date: mistachkin 2018-03-08 14:14:57.073
Context
2018-03-08
16:09
Add tests for ticket [baf42ee135] and get them passing. check-in: d0b0a52b9a user: mistachkin tags: tkt-baf42ee135
14:14
Improve handling of base catalog/table name in GetSchemaTable, pursuant to [baf42ee135]. check-in: 9f02226408 user: mistachkin tags: tkt-baf42ee135
2018-03-02
13:42
Final updates for release 1.0.108.0. check-in: 1dfd85913a user: mistachkin tags: trunk, release, release-1.0.108.0
Changes
Unified Diff Ignore Whitespace Patch
Changes to System.Data.SQLite/SQLiteDataReader.cs.
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        temp = columnToParent[n].DatabaseName;
        if (String.IsNullOrEmpty(temp) == false) row[SchemaTableOptionalColumn.BaseCatalogName] = temp;

        string dataType = null;
        // If we have a table-bound column, extract the extra information from it
        if (String.IsNullOrEmpty(strColumn) == false)
        {










          string collSeq = null;
          bool bNotNull = false;
          bool bPrimaryKey = false;
          bool bAutoIncrement = false;
          string[] arSize;

          // Get the column meta data
          _command.Connection._sql.ColumnMetaData(
            (string)row[SchemaTableOptionalColumn.BaseCatalogName],
            (string)row[SchemaTableColumn.BaseTableName],
            strColumn,
            ref dataType, ref collSeq, ref bNotNull, ref bPrimaryKey, ref bAutoIncrement);

          if (bNotNull || bPrimaryKey) row[SchemaTableColumn.AllowDBNull] = false;

          row[SchemaTableColumn.IsKey] = bPrimaryKey && CountParents(parentToColumns) <= 1;
          row[SchemaTableOptionalColumn.IsAutoIncrement] = bAutoIncrement;








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        temp = columnToParent[n].DatabaseName;
        if (String.IsNullOrEmpty(temp) == false) row[SchemaTableOptionalColumn.BaseCatalogName] = temp;

        string dataType = null;
        // If we have a table-bound column, extract the extra information from it
        if (String.IsNullOrEmpty(strColumn) == false)
        {
          string baseCatalogName = null;

          if (row[SchemaTableOptionalColumn.BaseCatalogName] != DBNull.Value)
              baseCatalogName = (string)row[SchemaTableOptionalColumn.BaseCatalogName];

          string baseTableName = null;

          if (row[SchemaTableColumn.BaseTableName] != DBNull.Value)
              baseTableName = (string)row[SchemaTableColumn.BaseTableName];

          string collSeq = null;
          bool bNotNull = false;
          bool bPrimaryKey = false;
          bool bAutoIncrement = false;
          string[] arSize;

          // Get the column meta data
          _command.Connection._sql.ColumnMetaData(
            baseCatalogName,
            baseTableName,
            strColumn,
            ref dataType, ref collSeq, ref bNotNull, ref bPrimaryKey, ref bAutoIncrement);

          if (bNotNull || bPrimaryKey) row[SchemaTableColumn.AllowDBNull] = false;

          row[SchemaTableColumn.IsKey] = bPrimaryKey && CountParents(parentToColumns) <= 1;
          row[SchemaTableOptionalColumn.IsAutoIncrement] = bAutoIncrement;
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            }
          }

          if (wantDefaultValue)
          {
            // Determine the default value for the column, which sucks because we have to query the schema for each column
            using (SQLiteCommand cmdTable = new SQLiteCommand(HelperMethods.StringFormat(CultureInfo.InvariantCulture, "PRAGMA [{0}].TABLE_INFO([{1}])",
              row[SchemaTableOptionalColumn.BaseCatalogName],
              row[SchemaTableColumn.BaseTableName]
              ), _command.Connection))
            using (DbDataReader rdTable = cmdTable.ExecuteReader())
            {
              // Find the matching column
              while (rdTable.Read())
              {
                if (String.Compare((string)row[SchemaTableColumn.BaseColumnName], rdTable.GetString(1), StringComparison.OrdinalIgnoreCase) == 0)
                {
                  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(SQLiteConvert.GetStringOrNull(rowColumnIndex["COLUMN_NAME"]), strColumn, StringComparison.OrdinalIgnoreCase) == 0)
                {








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            }
          }

          if (wantDefaultValue)
          {
            // Determine the default value for the column, which sucks because we have to query the schema for each column
            using (SQLiteCommand cmdTable = new SQLiteCommand(HelperMethods.StringFormat(CultureInfo.InvariantCulture, "PRAGMA [{0}].TABLE_INFO([{1}])",
              baseCatalogName,
              baseTableName
              ), _command.Connection))
            using (DbDataReader rdTable = cmdTable.ExecuteReader())
            {
              // Find the matching column
              while (rdTable.Read())
              {
                if (String.Compare((string)row[SchemaTableColumn.BaseColumnName], rdTable.GetString(1), StringComparison.OrdinalIgnoreCase) == 0)
                {
                  if (rdTable.IsDBNull(4) == false)
                    row[SchemaTableOptionalColumn.DefaultValue] = rdTable[4];

                  break;
                }
              }
            }
          }

          // Determine IsUnique properly, which is a pain in the butt!
          if (wantUniqueInfo)
          {
            if (baseCatalogName != strCatalog
              || baseTableName != strTable)
            {
              strCatalog = baseCatalogName;
              strTable = baseTableName;

              tblIndexes = _command.Connection.GetSchema("Indexes", new string[] {
                baseCatalogName,
                null,
                baseTableName,
                null });
            }

            foreach (DataRow rowIndexes in tblIndexes.Rows)
            {
              tblIndexColumns = _command.Connection.GetSchema("IndexColumns", new string[] {
                baseCatalogName,
                null,
                baseTableName,
                (string)rowIndexes["INDEX_NAME"],
                null
                });
              foreach (DataRow rowColumnIndex in tblIndexColumns.Rows)
              {
                if (String.Compare(SQLiteConvert.GetStringOrNull(rowColumnIndex["COLUMN_NAME"]), strColumn, StringComparison.OrdinalIgnoreCase) == 0)
                {
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