System.Data.SQLite
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Overview
Comment:Use the declared column size for the AnsiStringFixedLength and StringFixedLength mapped database types. Fix for [3113734605].
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 9531731b986479db9f63d3b219ff3050c1b7a4e7
User & Date: mistachkin 2013-08-29 07:08:46
References
2013-08-29
07:11 • Closed ticket [3113734605]: Schema information for column size is wrong in version 1.0.85 plus 6 other changes artifact: 393c87380f user: mistachkin
Context
2013-08-29
09:08
Update SQLite core library to the latest trunk. check-in: fec273cc1d user: mistachkin tags: trunk
07:08
Use the declared column size for the AnsiStringFixedLength and StringFixedLength mapped database types. Fix for [3113734605]. check-in: 9531731b98 user: mistachkin tags: trunk
2013-08-27
00:52
Add MS KB article link about the Visual C++ Runtime Library downloads to the download page. check-in: 3824d3fd20 user: mistachkin tags: trunk
Changes
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Changes to System.Data.SQLite/SQLiteDataReader.cs. 

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/********************************************************
 * ADO.NET 2.0 Data Provider for SQLite Version 3.X
 * Written by Robert Simpson (robert@blackcastlesoft.com)
 * 
 * Released to the public domain, use at your own risk!
 ********************************************************/

namespace System.Data.SQLite
{
  using System;
  using System.Collections.Generic;
................................................................................
        return _fieldCount;
      }
    }

    /// <summary>
    /// SQLite is inherently un-typed.  All datatypes in SQLite are natively strings.  The definition of the columns of a table
    /// and the affinity of returned types are all we have to go on to type-restrict data in the reader.
    /// 
    /// This function attempts to verify that the type of data being requested of a column matches the datatype of the column.  In
    /// the case of columns that are not backed into a table definition, we attempt to match up the affinity of a column (int, double, string or blob)
    /// to a set of known types that closely match that affinity.  It's not an exact science, but its the best we can do.
    /// </summary>
    /// <returns>
    /// This function throws an InvalidTypeCast() exception if the requested type doesn't match the column's definition or affinity.
    /// </returns>
................................................................................
      tbl.Columns.Add(SchemaTableOptionalColumn.DefaultValue, typeof(object));
      tbl.Columns.Add("DataTypeName", typeof(string));
      tbl.Columns.Add("CollationType", typeof(string));
      tbl.BeginLoadData();

      for (int n = 0; n < _fieldCount; n++)
      {


        row = tbl.NewRow();

        DbType typ = GetSQLiteType(n).Type;

        // Default settings for the column
        row[SchemaTableColumn.ColumnName] = GetName(n);
        row[SchemaTableColumn.ColumnOrdinal] = n;
        row[SchemaTableColumn.ColumnSize] = SQLiteConvert.DbTypeToColumnSize(typ);
        row[SchemaTableColumn.NumericPrecision] = SQLiteConvert.DbTypeToNumericPrecision(typ);
        row[SchemaTableColumn.NumericScale] = SQLiteConvert.DbTypeToNumericScale(typ);
        row[SchemaTableColumn.ProviderType] = GetSQLiteType(n).Type;
        row[SchemaTableColumn.IsLong] = false;
        row[SchemaTableColumn.AllowDBNull] = true;
        row[SchemaTableOptionalColumn.IsReadOnly] = false;
        row[SchemaTableOptionalColumn.IsRowVersion] = false;
        row[SchemaTableColumn.IsUnique] = false;
        row[SchemaTableColumn.IsKey] = false;
        row[SchemaTableOptionalColumn.IsAutoIncrement] = false;
................................................................................
          if (arSize.Length > 1)
          {
            dataType = arSize[0];
            arSize = arSize[1].Split(')');
            if (arSize.Length > 1)
            {
              arSize = arSize[0].Split(',', '.');
              if (GetSQLiteType(n).Type == DbType.String || GetSQLiteType(n).Type == DbType.Binary)

              {
                row[SchemaTableColumn.ColumnSize] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
              }
              else
              {
                row[SchemaTableColumn.NumericPrecision] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
                if (arSize.Length > 1)
................................................................................
        _fieldTypeArray = new SQLiteType[VisibleFieldCount];

      // Initialize this column's field type instance
      if (_fieldTypeArray[i] == null) _fieldTypeArray[i] = new SQLiteType();

      typ = _fieldTypeArray[i];

      // If not initialized, then fetch the declared column datatype and attempt to convert it 
      // to a known DbType.
      if (typ.Affinity == TypeAffinity.Uninitialized)
        typ.Type = SQLiteConvert.TypeNameToDbType(_activeStatement._sql.ColumnType(_activeStatement, i, out typ.Affinity));
      else
        typ.Affinity = _activeStatement._sql.ColumnAffinity(_activeStatement, i);

      return typ;




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/********************************************************
 * ADO.NET 2.0 Data Provider for SQLite Version 3.X
 * Written by Robert Simpson (robert@blackcastlesoft.com)
 *
 * Released to the public domain, use at your own risk!
 ********************************************************/

namespace System.Data.SQLite
{
  using System;
  using System.Collections.Generic;
................................................................................
        return _fieldCount;
      }
    }

    /// <summary>
    /// SQLite is inherently un-typed.  All datatypes in SQLite are natively strings.  The definition of the columns of a table
    /// and the affinity of returned types are all we have to go on to type-restrict data in the reader.
    ///
    /// This function attempts to verify that the type of data being requested of a column matches the datatype of the column.  In
    /// the case of columns that are not backed into a table definition, we attempt to match up the affinity of a column (int, double, string or blob)
    /// to a set of known types that closely match that affinity.  It's not an exact science, but its the best we can do.
    /// </summary>
    /// <returns>
    /// This function throws an InvalidTypeCast() exception if the requested type doesn't match the column's definition or affinity.
    /// </returns>
................................................................................
      tbl.Columns.Add(SchemaTableOptionalColumn.DefaultValue, typeof(object));
      tbl.Columns.Add("DataTypeName", typeof(string));
      tbl.Columns.Add("CollationType", typeof(string));
      tbl.BeginLoadData();

      for (int n = 0; n < _fieldCount; n++)
      {
        SQLiteType sqlType = GetSQLiteType(n);

        row = tbl.NewRow();

        DbType typ = sqlType.Type;

        // Default settings for the column
        row[SchemaTableColumn.ColumnName] = GetName(n);
        row[SchemaTableColumn.ColumnOrdinal] = n;
        row[SchemaTableColumn.ColumnSize] = SQLiteConvert.DbTypeToColumnSize(typ);
        row[SchemaTableColumn.NumericPrecision] = SQLiteConvert.DbTypeToNumericPrecision(typ);
        row[SchemaTableColumn.NumericScale] = SQLiteConvert.DbTypeToNumericScale(typ);
        row[SchemaTableColumn.ProviderType] = sqlType.Type;
        row[SchemaTableColumn.IsLong] = false;
        row[SchemaTableColumn.AllowDBNull] = true;
        row[SchemaTableOptionalColumn.IsReadOnly] = false;
        row[SchemaTableOptionalColumn.IsRowVersion] = false;
        row[SchemaTableColumn.IsUnique] = false;
        row[SchemaTableColumn.IsKey] = false;
        row[SchemaTableOptionalColumn.IsAutoIncrement] = false;
................................................................................
          if (arSize.Length > 1)
          {
            dataType = arSize[0];
            arSize = arSize[1].Split(')');
            if (arSize.Length > 1)
            {
              arSize = arSize[0].Split(',', '.');
              if (sqlType.Type == DbType.Binary || sqlType.Type == DbType.String ||
                  sqlType.Type == DbType.AnsiStringFixedLength || sqlType.Type == DbType.StringFixedLength)
              {
                row[SchemaTableColumn.ColumnSize] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
              }
              else
              {
                row[SchemaTableColumn.NumericPrecision] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
                if (arSize.Length > 1)
................................................................................
        _fieldTypeArray = new SQLiteType[VisibleFieldCount];

      // Initialize this column's field type instance
      if (_fieldTypeArray[i] == null) _fieldTypeArray[i] = new SQLiteType();

      typ = _fieldTypeArray[i];

      // If not initialized, then fetch the declared column datatype and attempt to convert it
      // to a known DbType.
      if (typ.Affinity == TypeAffinity.Uninitialized)
        typ.Type = SQLiteConvert.TypeNameToDbType(_activeStatement._sql.ColumnType(_activeStatement, i, out typ.Affinity));
      else
        typ.Affinity = _activeStatement._sql.ColumnAffinity(_activeStatement, i);

      return typ;

Added Tests/tkt-3113734605.eagle. 



































































































































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###############################################################################
#
# tkt-3113734605.eagle --
#
# Written by Joe Mistachkin.
# Released to the public domain, use at your own risk!
#
###############################################################################

package require Eagle
package require Eagle.Library
package require Eagle.Test

runTestPrologue

###############################################################################

package require System.Data.SQLite.Test
runSQLiteTestPrologue

###############################################################################

runTest {test tkt-3113734605-1.1 {ColumnSize and NumericPrecision} -setup {
  setupDb [set fileName tkt-3113734605-1.1.db]
} -body {
  set connection [getDbConnection]

  set result [list]

  sql execute $db "CREATE TABLE t1 (x CHAR(3));"
  sql execute $db "CREATE VIEW v1 AS SELECT * FROM t1;"

  foreach collectionName [list TABLECOLUMNS VIEWCOLUMNS] {
    set dataTable [object invoke -alias $connection GetSchema $collectionName]

    if {[string length $dataTable] > 0} then {
      set dataRows [$dataTable Rows]

      object foreach -alias dataRow $dataRows {
        lappend result [set value [$dataRow get_Item TABLE_NAME]]
        lappend result [set value [$dataRow get_Item COLUMN_NAME]]
        lappend result [set value [$dataRow get_Item CHARACTER_MAXIMUM_LENGTH]]
        lappend result [set value [$dataRow get_Item NUMERIC_PRECISION]]
      }
    }
  }

  set result
} -cleanup {
  cleanupDb $fileName

  freeDbConnection

  unset -nocomplain value dataRow dataRows dataTable collectionName result \
      connection db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite} -match \
regexp -result {^t1 x 3 System#DBNull#\d+ v1 x 3 System#DBNull#\d+ t1 x 3\
System#DBNull#\d+$}}

###############################################################################

runSQLiteTestEpilogue
runTestEpilogue

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