System.Data.SQLite

using System;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

#if !PLATFORM_COMPACTFRAMEWORK
using System.Runtime.ConstrainedExecution;
#endif

// General Information about an assembly is controlled through the following 
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle("System.Data.SQLite")]
[assembly: AssemblyDescription("ADO.NET 2.0 Data Provider for SQLite")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("http://sourceforge.net/projects/sqlite-dotnet2")]
[assembly: AssemblyProduct("System.Data.SQLite")]
[assembly: AssemblyCopyright("Public Domain")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]

//  Setting ComVisible to false makes the types in this assembly not visible 
//  to COM componenets.  If you need to access a type in this assembly from 
//  COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]

[assembly: CLSCompliant(true)]

#if !PLATFORM_COMPACTFRAMEWORK
[assembly: ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
#endif

// Version information for an assembly consists of the following four values:
//
//      Major Version
//      Minor Version 
//      Build Number
//      Revision
//
// You can specify all the values or you can default the Revision and Build Numbers 
// by using the '*' as shown below:
[assembly: AssemblyVersion("1.0.12.*")]

    internal override int ColumnIndex(SQLiteStatement stmt, string columnName)
    {
      int x = ColumnCount(stmt);

      for (int n = 0; n < x; n++)
      {
        if (String.Compare(columnName, ColumnName(stmt, n), true, System.Globalization.CultureInfo.CurrentCulture) == 0) return n;
      }
      return -1;
    }

    internal override double GetDouble(SQLiteStatement stmt, int index)
    {
      double value;

        // Reattach all attached databases from the existing connection
        using (DataTable tbl = cnn.GetSchema("Catalogs"))
        {
          foreach (DataRow row in tbl.Rows)
          {
            str = row[0].ToString();
            if (String.Compare(str, "MAIN", true, System.Globalization.CultureInfo.InvariantCulture) != 0
              && String.Compare(str, "TEMP", true, System.Globalization.CultureInfo.InvariantCulture) != 0)
            {
              _sql.Execute(String.Format(System.Globalization.CultureInfo.InvariantCulture, "ATTACH DATABASE '{0}' AS [{1}]", row[1], row[0]));
            }
          }
        }
      }
    }

#if PLATFORM_COMPACTFRAMEWORK

    /// <param name="defValue">The default value to return if the key is not found</param>
    /// <returns>The value corresponding to the specified key, or the default value if not found.</returns>
    static internal string FindKey(KeyValuePair<string, string>[] opts, string key, string defValue)
    {
      int x = opts.Length;
      for (int n = 0; n < x; n++)
      {
        if (String.Compare(opts[n].Key, key, true, System.Globalization.CultureInfo.InvariantCulture) == 0)
        {
          return opts[n].Value;
        }
      }
      return defValue;
    }

    /// <summary>
    /// Opens the connection using the parameters found in the <see cref="ConnectionString">ConnectionString</see>
    /// </summary>
    public override void Open()
    {
      if (_connectionState != ConnectionState.Closed)
        throw new InvalidOperationException();

      Close();

      KeyValuePair<string, string>[] opts = ParseConnectionString();

      if (Convert.ToInt32(FindKey(opts, "Version", "3"), System.Globalization.CultureInfo.InvariantCulture) != 3)
        throw new NotSupportedException("Only SQLite Version 3 is supported at this time");

      try
      {
        string strFile = FindKey(opts, "Data Source", "");
        bool bUTF16 = (Convert.ToBoolean(FindKey(opts, "UseUTF16Encoding", "False"), System.Globalization.CultureInfo.InvariantCulture) == true);

        if (bUTF16)
          _sql = new SQLite3_UTF16(String.Compare(FindKey(opts, "DateTimeFormat", "ISO8601"), "TICKS", true, System.Globalization.CultureInfo.InvariantCulture) == 0 ? DateTimeFormat.Ticks : DateTimeFormat.ISO8601);
        else
          _sql = new SQLite3(String.Compare(FindKey(opts, "DateTimeFormat", "ISO8601"), "TICKS", true, System.Globalization.CultureInfo.InvariantCulture) == 0 ? DateTimeFormat.Ticks : DateTimeFormat.ISO8601);

        _sql.Open(strFile);

        if (bUTF16 == true)
          _sql.Execute("PRAGMA encoding = 'UTF-16'");
        else
          _sql.Execute("PRAGMA encoding = 'UTF-8'");

        _sql.Execute(String.Format(System.Globalization.CultureInfo.InvariantCulture, "PRAGMA Synchronous={0}", FindKey(opts, "Synchronous", "Normal")));
        _sql.Execute(String.Format(System.Globalization.CultureInfo.InvariantCulture, "PRAGMA Cache_Size={0}", FindKey(opts, "Cache Size", "2000")));
        if (String.Compare(strFile, ":MEMORY:", true, System.Globalization.CultureInfo.InvariantCulture) != 0)
          _sql.Execute(String.Format(System.Globalization.CultureInfo.InvariantCulture, "PRAGMA Page_Size={0}", FindKey(opts, "Page Size", "1024")));
      }
      catch (SQLiteException)
      {
        OnStateChange(ConnectionState.Broken);
        throw;
      }
      OnStateChange(ConnectionState.Open);

        throw new InvalidOperationException();

      string[] parms = new string[5];

      restrictionValues.CopyTo(parms, 0);

      if (restrictionValues == null) restrictionValues = new string[0];
      switch (collectionName.ToUpper(System.Globalization.CultureInfo.InvariantCulture))
      {
        case "METADATACOLLECTIONS":
          return Schema_MetaDataCollections();
        case "DATASOURCEINFORMATION":
          return Schema_DataSourceInformation();
        case "COLUMNS":
          return Schema_Columns(parms[0], parms[2], parms[3]);

    /// </summary>
    /// <returns>DataTable</returns>
    private static DataTable Schema_MetaDataCollections()
    {
      DataTable tbl = new DataTable("MetaDataCollections");
      DataRow row;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("CollectionName", typeof(string));
      tbl.Columns.Add("NumberOfRestrictions", typeof(int));
      tbl.Columns.Add("NumberOfIdentifierParts", typeof(int));

      tbl.BeginLoadData();

      row = tbl.NewRow();

    /// </summary>
    /// <returns>DataTable</returns>
    private DataTable Schema_DataSourceInformation()
    {
      DataTable tbl = new DataTable("DataSourceInformation");
      DataRow row;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("CompositeIdentifierSeparatorPattern", typeof(string));
      tbl.Columns.Add("DataSourceProductName", typeof(string));
      tbl.Columns.Add("DataSourceProductVersion", typeof(string));
      tbl.Columns.Add("DataSourceProductVersionNormalized", typeof(string));
      tbl.Columns.Add("GroupByBehavior", typeof(int));
      tbl.Columns.Add("IdentifierPattern", typeof(string));
      tbl.Columns.Add("IdentifierCase", typeof(int));

    /// <param name="strColumn">The column to retrieve schema information for, can be null</param>
    /// <returns>DataTable</returns>
    private DataTable Schema_Columns(string strCatalog, string strTable, string strColumn)
    {
      DataTable tbl = new DataTable("Columns");
      DataRow row;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("TABLE_CATALOG", typeof(string));
      tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
      tbl.Columns.Add("TABLE_NAME", typeof(string));
      tbl.Columns.Add("COLUMN_NAME", typeof(string));
      tbl.Columns.Add("COLUMN_GUID", typeof(Guid));
      tbl.Columns.Add("COLUMN_PROPID", typeof(long));
      tbl.Columns.Add("ORDINAL_POSITION", typeof(long));

      tbl.Columns.Add("DOMAIN_NAME", typeof(string));
      tbl.Columns.Add("DESCRIPTION", typeof(string));

      tbl.BeginLoadData();

      if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";

      using (SQLiteCommand cmd = new SQLiteCommand(String.Format(System.Globalization.CultureInfo.CurrentCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, strTable), 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, System.Globalization.CultureInfo.CurrentCulture) == 0 || strColumn == null)
              {
                row = tbl.NewRow();

                row["TABLE_NAME"] = strTable;
                row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.ColumnName];
                row["TABLE_CATALOG"] = schemaRow[SchemaTableOptionalColumn.BaseCatalogName];
                row["ORDINAL_POSITION"] = schemaRow[SchemaTableColumn.ColumnOrdinal];

    /// <param name="strTable">The table to retrieve index information for, can be null</param>
    /// <returns>DataTable</returns>
    private DataTable Schema_Indexes(string strCatalog, string strIndex, string strTable)
    {
      DataTable tbl = new DataTable("Indexes");
      DataRow row;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("TABLE_CATALOG", typeof(string));
      tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
      tbl.Columns.Add("TABLE_NAME", typeof(string));
      tbl.Columns.Add("INDEX_CATALOG", typeof(string));
      tbl.Columns.Add("INDEX_SCHEMA", typeof(string));
      tbl.Columns.Add("INDEX_NAME", typeof(string));
      tbl.Columns.Add("PRIMARY_KEY", typeof(bool));

      tbl.Columns.Add("FILTER_CONDITION", typeof(string));
      tbl.Columns.Add("INTEGRATED", typeof(bool));

      tbl.BeginLoadData();

      if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";

      using (SQLiteCommand cmd = new SQLiteCommand(String.Format(System.Globalization.CultureInfo.CurrentCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] = 'index'", strCatalog), this))
      {
        using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            if (String.Compare(rd.GetString(1), strIndex, true, System.Globalization.CultureInfo.CurrentCulture) == 0 || strIndex == null)
            {
              if (String.Compare(rd.GetString(2), strTable, true, System.Globalization.CultureInfo.CurrentCulture) == 0 || strTable == null)
              {
                row = tbl.NewRow();
                row["TABLE_CATALOG"] = strCatalog;
                row["TABLE_NAME"] = rd.GetString(2);
                row["INDEX_NAME"] = rd.GetString(1);

                tbl.Rows.Add(row);

    /// <returns>DataTable</returns>
    private DataTable Schema_Tables(string strCatalog, string strTable, string strType)
    {
      DataTable tbl = new DataTable("Tables");
      DataRow row;
      string strItem;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("TABLE_CATALOG", typeof(string));
      tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
      tbl.Columns.Add("TABLE_NAME", typeof(string));
      tbl.Columns.Add("TABLE_TYPE", typeof(string));
      tbl.Columns.Add("TABLE_GUID", typeof(Guid));
      tbl.Columns.Add("DESCRIPTION", typeof(string));
      tbl.Columns.Add("TABLE_PROPID", typeof(long));
      tbl.Columns.Add("DATE_CREATED", typeof(DateTime));
      tbl.Columns.Add("DATE_MODIFIED", typeof(DateTime));

      tbl.BeginLoadData();

      if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";

      using (SQLiteCommand cmd = new SQLiteCommand(String.Format(System.Globalization.CultureInfo.CurrentCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] NOT LIKE 'index'", strCatalog), this))
      {
        using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            strItem = rd.GetString(0).ToUpper(System.Globalization.CultureInfo.CurrentCulture);
            if (rd.GetString(2).ToUpper(System.Globalization.CultureInfo.CurrentCulture).IndexOf("SQLITE_") == 0)
              strItem = "SYSTEM TABLE";

            if (String.Compare(strItem, strType, true, System.Globalization.CultureInfo.CurrentCulture) == 0 || strType == null)
            {
              if (String.Compare(rd.GetString(2), strTable, true, System.Globalization.CultureInfo.CurrentCulture) == 0 || strTable == null)
              {
                row = tbl.NewRow();
                row["TABLE_CATALOG"] = strCatalog;
                row["TABLE_NAME"] = rd.GetString(2);
                row["TABLE_TYPE"] = strItem;

                tbl.Rows.Add(row);

    private DataTable Schema_Views(string strCatalog, string strView)
    {
      DataTable tbl = new DataTable("Views");
      DataRow row;
      string strItem;
      int nPos;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("TABLE_CATALOG", typeof(string));
      tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
      tbl.Columns.Add("TABLE_NAME", typeof(string));
      tbl.Columns.Add("VIEW_DEFINITION", typeof(string));
      tbl.Columns.Add("CHECK_OPTION", typeof(bool));
      tbl.Columns.Add("IS_UPDATEABLE", typeof(bool));
      tbl.Columns.Add("DESCRIPTION", typeof(string));
      tbl.Columns.Add("DATE_CREATED", typeof(DateTime));
      tbl.Columns.Add("DATE_MODIFIED", typeof(DateTime));

      tbl.BeginLoadData();

      if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";

      using (SQLiteCommand cmd = new SQLiteCommand(String.Format(System.Globalization.CultureInfo.CurrentCulture, "SELECT * FROM [{0}].[sqlite_master] WHERE [type] LIKE 'view'", strCatalog), this))
      {
        using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            if (String.Compare(rd.GetString(1), strView, true, System.Globalization.CultureInfo.CurrentCulture) == 0 || strView == null)
            {
              strItem = rd.GetString(4);
              nPos = Globalization.CultureInfo.InvariantCulture.CompareInfo.IndexOf(strItem, " AS ");
              if (nPos > -1)
              {
                strItem = strItem.Substring(nPos + 4);
                row = tbl.NewRow();

    /// <param name="strCatalog">The catalog to retrieve, can be null</param>
    /// <returns>DataTable</returns>
    private DataTable Schema_Catalogs(string strCatalog)
    {
      DataTable tbl = new DataTable("Catalogs");
      DataRow row;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add("CATALOG_NAME", typeof(string));
      tbl.Columns.Add("DESCRIPTION", typeof(string));

      tbl.BeginLoadData();

      using (SQLiteCommand cmd = new SQLiteCommand("PRAGMA database_list", this))
      {
        using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            if (strCatalog == null || String.Compare(rd.GetString(1), strCatalog, true, System.Globalization.CultureInfo.CurrentCulture) == 0)
            {
              row = tbl.NewRow();
              row["CATALOG_NAME"] = rd.GetString(1);
              tbl.Rows.Add(row);
            }
          }
        }

    /// <summary>
    /// Gets/Sets the default version of the SQLite engine to instantiate.  Currently the only valid value is 3, indicating version 3 of the sqlite library.
    /// </summary>
    public int Version
    {
      get
      {
        return Convert.ToInt32(this["Version"], System.Globalization.CultureInfo.InvariantCulture);
      }
      set
      {
        if (value != 3)
          throw new NotSupportedException();

        this["Version"] = value;
      }
    }

    /// <summary>
    /// Gets/Sets the synchronous mode of the connection string.  Default is "Normal".
    /// </summary>
    public SyncMode SyncMode
    {
      get
      {
        string s = this["Synchronous"].ToString().ToUpper(System.Globalization.CultureInfo.CurrentCulture);
        switch (s)
        {
          case "FULL":
            return SyncMode.Full;
          case "OFF":
            return SyncMode.Off;
          default:

    /// <summary>
    /// Gets/Sets the encoding for the connection string.  The default is "False" which indicates UTF-8 encoding.
    /// </summary>
    public bool UseUTF16Encoding
    {
      get
      {
        return (String.Compare(this["UseUTF16Encoding"].ToString(), "True", true, System.Globalization.CultureInfo.InvariantCulture) == 0);
      }
      set
      {
        this["UseUTF16Encoding"] = ((value == true) ? "True" : "False");
      }
    }

    /// <summary>
    /// Gets/Sets the page size for the connection.
    /// </summary>
    public int PageSize
    {
      get
      {
        return Convert.ToInt32(this["Page Size"], System.Globalization.CultureInfo.InvariantCulture);
      }
      set
      {
        this["Page Size"] = value;
      }
    }

    /// <summary>
    /// Gets/Sets the cache size for the connection.
    /// </summary>
    public int CacheSize
    {
      get
      {
        return Convert.ToInt32(this["Cache Size"], System.Globalization.CultureInfo.InvariantCulture);
      }
      set
      {
        this["Cache Size"] = value;
      }
    }

    /// <summary>
    /// Gets/Sets the datetime format for the connection.
    /// </summary>
    public DateTimeFormat DateTimeFormat
    {
      get
      {
        switch (this["DateTimeFormat"].ToString().ToUpper(System.Globalization.CultureInfo.InvariantCulture))
        {
          case "TICKS":
            return DateTimeFormat.Ticks;
          default:
            return DateTimeFormat.ISO8601;
        }
      }

    /// </summary>
    internal DbType Type;
    /// <summary>
    /// The affinity of a column, used for expressions or when Type is DbType.Object
    /// </summary>
    internal TypeAffinity Affinity;
  }

  internal struct SQLiteTypeNames
  {
    internal SQLiteTypeNames(string newtypeName, DbType newdataType)
    {
      typeName = newtypeName;
      dataType = newdataType;
    }

    internal string typeName;
    internal DbType dataType;
  }

  /// <summary>
  /// This base class provides datatype conversion services for the SQLite provider.
  /// </summary>
  public abstract class SQLiteConvert
  {
    /// <summary>

    /// <param name="dateText">The string containing either a Tick value or an ISO8601-format string</param>
    /// <returns>A DateTime value</returns>
    public DateTime ToDateTime(string dateText)
    {
      switch (_datetimeFormat)
      {
        case DateTimeFormat.Ticks:
          return new DateTime(Convert.ToInt64(dateText, System.Globalization.CultureInfo.InvariantCulture));
        default:
          return DateTime.ParseExact(dateText, _datetimeFormats, System.Globalization.DateTimeFormatInfo.InvariantInfo, System.Globalization.DateTimeStyles.None);
      }
    }

    ///// <summary>
    ///// Attempt to convert the specified string to a datetime value.

    /// <param name="dateValue">The DateTime value to convert</param>
    /// <returns>Either a string consisting of the tick count for DateTimeFormat.Ticks, or a date/time in ISO8601 format.</returns>
    public string ToString(DateTime dateValue)
    {
      switch (_datetimeFormat)
      {
        case DateTimeFormat.Ticks:
          return dateValue.Ticks.ToString(System.Globalization.CultureInfo.InvariantCulture);
        default:
          return dateValue.ToString(_datetimeFormats[0], System.Globalization.CultureInfo.InvariantCulture);
      }
    }

    /// <summary>
    /// Internal function to convert a UTF-8 encoded IntPtr of the specified length to a DateTime.
    /// </summary>
    /// <remarks>

    /// </summary>
    /// <param name="Name">The name of the type to match</param>
    /// <returns>The .NET DBType the text evaluates to.</returns>
    internal static DbType TypeNameToDbType(string Name)
    {
      if (Name == null) return DbType.Object;

      int x = _typeNames.Length;
      for (int n = 0; n < x; n++)
      {

        if (System.Globalization.CultureInfo.InvariantCulture.CompareInfo.IndexOf(Name, _typeNames[n].typeName, System.Globalization.CompareOptions.IgnoreCase) > -1)

          return _typeNames[n].dataType; 































      }
      return DbType.Object;
    }
    #endregion

    private static SQLiteTypeNames[] _typeNames = {
      new SQLiteTypeNames("LONGTEXT", DbType.String),
      new SQLiteTypeNames("LONGCHAR", DbType.String),
      new SQLiteTypeNames("SMALLINT", DbType.Int16),
      new SQLiteTypeNames("BIGINT", DbType.Int64),
      new SQLiteTypeNames("COUNTER", DbType.Int64),
      new SQLiteTypeNames("AUTOINCREMENT", DbType.Int64),
      new SQLiteTypeNames("IDENTITY", DbType.Int64),
      new SQLiteTypeNames("LONG", DbType.Int64),
      new SQLiteTypeNames("TINYINT", DbType.Byte),
      new SQLiteTypeNames("INTEGER", DbType.Int64),
      new SQLiteTypeNames("INT", DbType.Int32),
      new SQLiteTypeNames("TEXT", DbType.String),
      new SQLiteTypeNames("DOUBLE", DbType.Double),
      new SQLiteTypeNames("FLOAT", DbType.Double),
      new SQLiteTypeNames("REAL", DbType.Single),
      new SQLiteTypeNames("BIT", DbType.Boolean),
      new SQLiteTypeNames("YESNO", DbType.Boolean),
      new SQLiteTypeNames("LOGICAL", DbType.Boolean),
      new SQLiteTypeNames("BOOL", DbType.Boolean),
      new SQLiteTypeNames("NUMERIC", DbType.Decimal),
      new SQLiteTypeNames("DECIMAL", DbType.Decimal),
      new SQLiteTypeNames("MONEY", DbType.Decimal),
      new SQLiteTypeNames("CURRENCY", DbType.Decimal),
      new SQLiteTypeNames("TIME", DbType.DateTime),
      new SQLiteTypeNames("DATE", DbType.DateTime),
      new SQLiteTypeNames("BLOB", DbType.Binary),
      new SQLiteTypeNames("BINARY", DbType.Binary),
      new SQLiteTypeNames("IMAGE", DbType.Binary),
      new SQLiteTypeNames("GENERAL", DbType.Binary),
      new SQLiteTypeNames("OLEOBJECT", DbType.Binary),
      new SQLiteTypeNames("GUID", DbType.Guid),
      new SQLiteTypeNames("UNIQUEIDENTIFIER", DbType.Guid),
      new SQLiteTypeNames("MEMO", DbType.String),
      new SQLiteTypeNames("NOTE", DbType.String),
      new SQLiteTypeNames("CHAR", DbType.String),
    };
  }
}

    /// Retrieves the column as a boolean value
    /// </summary>
    /// <param name="i">The index of the column to retrieve</param>
    /// <returns>bool</returns>
    public override bool GetBoolean(int i)
    {
      VerifyType(i, DbType.Boolean);
      return Convert.ToBoolean(GetValue(i), System.Globalization.CultureInfo.CurrentCulture);
    }

    /// <summary>
    /// Retrieves the column as a single byte value
    /// </summary>
    /// <param name="i">The index of the column to retrieve</param>
    /// <returns>byte</returns>

      DataTable tbl = new DataTable("Schema");
      string[] arName;
      string strTable;
      string strCatalog;
      DataRow row;

      tbl.Locale = System.Globalization.CultureInfo.InvariantCulture;
      tbl.Columns.Add(SchemaTableColumn.ColumnName, typeof(String));
      tbl.Columns.Add(SchemaTableColumn.ColumnOrdinal, typeof(Int32));
      tbl.Columns.Add(SchemaTableColumn.ColumnSize, typeof(Int32));
      tbl.Columns.Add(SchemaTableColumn.NumericPrecision, typeof(Int32));
      tbl.Columns.Add(SchemaTableColumn.NumericScale, typeof(Int32));
      tbl.Columns.Add(SchemaTableColumn.DataType, typeof(Type));
      tbl.Columns.Add(SchemaTableColumn.ProviderType, typeof(Int32));

              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(System.Globalization.CultureInfo.CurrentCulture, "PRAGMA [{1}].TABLE_INFO([{0}])", strTable, strCatalog), cnn))
                {
                  if (arName.Length < 3) strCatalog = "";

                  using (DbDataReader rdTable = cmdTable.ExecuteReader())
                  {
                    while (rdTable.Read())
                    {
                      if (String.Compare(arName[arName.Length - 1], rdTable.GetString(1), true, System.Globalization.CultureInfo.CurrentCulture) == 0)
                      {
                        string strType = rdTable.GetString(2);
                        string[] arSize = strType.Split('(');
                        if (arSize.Length > 1)
                        {
                          arSize = arSize[1].Split(')');
                          if (arSize.Length > 1)
                            row["ColumnSize"] = Convert.ToInt32(arSize[0], System.Globalization.CultureInfo.InvariantCulture);
                        }
                        bool bNotNull = rdTable.GetBoolean(3);
                        bool bPrimaryKey = rdTable.GetBoolean(5);

                        row[SchemaTableColumn.BaseTableName] = strTable;
                        row[SchemaTableColumn.BaseColumnName] = rdTable.GetString(1);
                        if (strCatalog.Length > 0)
                        {
                          row[SchemaTableOptionalColumn.BaseColumnNamespace] = strCatalog;
                          row[SchemaTableColumn.BaseSchemaName] = strCatalog;
                        }

                        row[SchemaTableColumn.AllowDBNull] = (!bNotNull && !bPrimaryKey);
                        row[SchemaTableColumn.IsUnique] = bPrimaryKey;
                        row[SchemaTableColumn.IsKey] = bPrimaryKey;
                        row[SchemaTableOptionalColumn.IsAutoIncrement] = (bPrimaryKey && String.Compare(strType, "Integer", true, System.Globalization.CultureInfo.InvariantCulture) == 0);
                        row[SchemaTableOptionalColumn.IsReadOnly] = !(bool)row[SchemaTableOptionalColumn.IsAutoIncrement];
                        if (rdTable.IsDBNull(4) == false)
                          row[SchemaTableOptionalColumn.DefaultValue] = rdTable[4];
                        break;
                      }
                    }
                  }

  using System.Collections.Generic;
  using System.Text;
  using System.Data.Common;

#if !PLATFORM_COMPACTFRAMEWORK
  using System.Runtime.Serialization;
#endif

  /// <summary>
  /// SQLite error codes
  /// </summary>
  public enum SQLiteErrorCode
  {
    /// <summary>
    /// Success
    /// </summary>
    Ok = 0,
    /// <summary>
    /// SQL error or missing database
    /// </summary>
    Error,
    /// <summary>
    /// Internal logic error in SQLite
    /// </summary>
    Internal,
    /// <summary>
    /// Access permission denied
    /// </summary>
    Perm,
    /// <summary>
    /// Callback routine requested an abort
    /// </summary>
    Abort,
    /// <summary>
    /// The database file is locked
    /// </summary>
    Busy,
    /// <summary>
    /// A table in the database is locked
    /// </summary>
    Locked,
    /// <summary>
    /// malloc() failed
    /// </summary>
    NoMem,
    /// <summary>
    /// Attempt to write a read-only database
    /// </summary>
    ReadOnly,
    /// <summary>
    /// Operation terminated by sqlite3_interrupt()
    /// </summary>
    Interrupt,
    /// <summary>
    /// Some kind of disk I/O error occurred
    /// </summary>
    IOErr,
    /// <summary>
    /// The database disk image is malformed
    /// </summary>
    Corrupt,
    /// <summary>
    /// Table or record not found
    /// </summary>
    NotFound,
    /// <summary>
    /// Insertion failed because database is full
    /// </summary>
    Full,
    /// <summary>
    /// Unable to open the database file
    /// </summary>
    CantOpen,
    /// <summary>
    /// Database lock protocol error
    /// </summary>
    Protocol,
    /// <summary>
    /// Database is empty
    /// </summary>
    Empty,
    /// <summary>
    /// The database schema changed
    /// </summary>
    Schema,
    /// <summary>
    /// Too much data for one row of a table
    /// </summary>
    TooBig,
    /// <summary>
    /// Abort due to constraint violation
    /// </summary>
    Constraint,
    /// <summary>
    /// Data type mismatch
    /// </summary>
    Mismatch,
    /// <summary>
    /// Library used incorrectly
    /// </summary>
    Misuse,
    /// <summary>
    /// Uses OS features not supported on host
    /// </summary>
    NOLFS,
    /// <summary>
    /// Authorization denied
    /// </summary>
    Auth,
    /// <summary>
    /// Auxiliary database format error
    /// </summary>
    Format,
    /// <summary>
    /// 2nd parameter to sqlite3_bind out of range
    /// </summary>
    Range,
    /// <summary>
    /// File opened that is not a database file
    /// </summary>
    NotADatabase,
    /// <summary>
    /// sqlite3_step() has another row ready
    /// </summary>
    Row = 100,
    /// <summary>
    /// sqlite3_step() has finished executing
    /// </summary>
    Done = 101,
  }

  /// <summary>
  /// SQLite exception class.
  /// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
  [Serializable]
#endif
  public sealed class SQLiteException : Exception
  {
    private SQLiteErrorCode _errorCode;




#if !PLATFORM_COMPACTFRAMEWORK

    private SQLiteException(SerializationInfo info, StreamingContext context)
      : base(info, context)
    {
    }
#endif

    /// <summary>
    /// Public constructor for generating a SQLite error given the base error code
    /// </summary>
    /// <param name="errorCode">The SQLite error code to report</param>
    /// <param name="extendedInformation">Extra text to go along with the error message text</param>
    public SQLiteException(int errorCode, string extendedInformation)
      : base(Initialize(errorCode, extendedInformation))
    {
      _errorCode = (SQLiteErrorCode)errorCode;
    }

    /// <summary>
    /// Various public constructors that just pass along to the base Exception
    /// </summary>
    /// <param name="message">Passed verbatim to Exception</param>
    public SQLiteException(string message)
      : base(message)
    {
    }

    /// <summary>
    /// Various public constructors that just pass along to the base Exception
    /// </summary>
    public SQLiteException()
    {
    }

    /// <summary>
    /// Various public constructors that just pass along to the base Exception
    /// <param name="message">Passed to Exception</param>
    /// <param name="innerException">Passed to Exception</param>
    /// </summary>
    public SQLiteException(string message, Exception innerException)
      : base(message, innerException)
    {
    }

    /// <summary>
    /// Retrieves the underlying SQLite error code for this exception
    /// </summary>
    public SQLiteErrorCode ErrorCode
    {
      get { return _errorCode; }
    }

    /// <summary>
    /// Initializes the exception class with the SQLite error code.
    /// </summary>
    /// <param name="errorCode">The SQLite error code</param>
    /// <param name="errorMessage">A detailed error message</param>
    /// <returns>An error message string</returns>
    /// <remarks>
    /// The SQLite error code is OR'd with 0x800F0000 to generate an HResult
    /// </remarks>
    private static string Initialize(int errorCode, string errorMessage)
    {
      if (errorMessage == null) errorMessage = "";

      if (errorMessage.Length > 0)
        errorMessage = "\r\n" + errorMessage;

      return _errorMessages[errorCode] + errorMessage;
    }

    private static string[] _errorMessages = {
      "SQLite OK",
      "SQLite error",

      "An internal logic error in SQLite",

      "Access permission denied",

      "Callback routine requested an abort",

      "The database file is locked",



      "malloc() failed",

      "Atempt to write a read-only database",

      "Operation terminated by sqlite3_interrupt()",

      "Some kind of disk I/O error occurred",

      "The database disk image is malformed",

      "Table or record not found",

      "Insertion failed because the database is full",

      "Unable to open the database file",

      "Database lock protocol error",

      "Database is empty",

      "The database schema changed",

      "Too much data for one row of a table",

      "Abort due to constraint violation",

      "Data type mismatch",

      "Library used incorrectly",

      "Uses OS features not supported on host",

      "Authorization denied",

      "Auxiliary database format error",

      "2nd parameter to sqlite3_bind() out of range",

      "File opened that is not a database file",
    };


  }
}

      switch (SQLiteConvert.TypeToAffinity(t))
      {
        case TypeAffinity.Null:
          _base.ReturnNull(context);
          return;
        case TypeAffinity.Int64:
          _base.ReturnInt64(context, Convert.ToInt64(returnValue, System.Globalization.CultureInfo.CurrentCulture));
          return;
        case TypeAffinity.Double:
          _base.ReturnDouble(context, Convert.ToDouble(returnValue, System.Globalization.CultureInfo.CurrentCulture));
          return;
        case TypeAffinity.Text:
          _base.ReturnText(context, returnValue.ToString());
          return;
        case TypeAffinity.Blob:
          _base.ReturnBlob(context, (byte[])returnValue);
          return;

    }

    /// <summary>
    /// Adds a parameter to the collection
    /// </summary>
    /// <param name="parameter">The parameter to add</param>
    /// <returns>A zero-based index of where the parameter is located in the array</returns>
    public int Add(DbParameter parameter)
    {
      int n = -1;

      if (parameter.ParameterName != null)
      {
        n = IndexOf(parameter.ParameterName);
      }

      if (n == -1)
      {
        n = _parameterList.Count;
        _parameterList.Add((SQLiteParameter)parameter);
      }

      SetParameter(n, parameter);

      return n;
    }

      return Add((SQLiteParameter)value);
    }

    /// <summary>
    /// Adds an array of parameters to the collection
    /// </summary>
    /// <param name="values">The array of parameters to add</param>
    public void AddRange(DbParameter[] values)
    {
      int x = values.Length;
      for (int n = 0; n < x; n++)
        Add(values[n]);
    }

    /// <summary>

    /// <param name="parameterName">The name of the parameter to find</param>
    /// <returns>-1 if not found, otherwise a zero-based index of the parameter</returns>
    public override int IndexOf(string parameterName)
    {
      int x = _parameterList.Count;
      for (int n = 0; n < x; n++)
      {
        if (String.Compare(parameterName, _parameterList[n].ParameterName, true, System.Globalization.CultureInfo.CurrentCulture) == 0) return n;
      }
      return -1;
    }

    /// <summary>
    /// Returns the index of a parameter
    /// </summary>

      SQLiteStatement stmt;

      foreach(SQLiteParameter p in _parameterList)
      {
        s = p.ParameterName;
        if (s == null)
        {
          s = String.Format(System.Globalization.CultureInfo.InvariantCulture, ";{0}", nUnnamed);
          nUnnamed++;
        }

        int x = _command._statementList.Length;
        for (n = 0; n < x; n++)
        {
          stmt = _command._statementList[n];

        _paramValues = new SQLiteParameter[n];

        for (x = 0; x < n; x++)
        {
          s = _sql.Bind_ParamName(this, x + 1);
          if (String.IsNullOrEmpty(s))
          {
            s = String.Format(System.Globalization.CultureInfo.InvariantCulture, ";{0}", nCmdStart);
            nCmdStart++;
          }
          _paramNames[x] = s;
          _paramValues[x] = null;
        }
      }
    }

    internal void MapParameter(string s, SQLiteParameter p)
    {
      if (_paramNames == null) return;

      int x = _paramNames.Length;
      for (int n = 0; n < x; n++)
      {
        if (String.Compare(_paramNames[n], s, true, System.Globalization.CultureInfo.CurrentCulture) == 0)
        {
          _paramValues[n] = p;
          break;
        }
      }
    }

      }

      switch (param.DbType)
      {
        case DbType.Date:
        case DbType.Time:
        case DbType.DateTime:
          _sql.Bind_DateTime(this, index, Convert.ToDateTime(obj, System.Globalization.CultureInfo.CurrentCulture));
          break;
        case DbType.Int64:
        case DbType.UInt64:
          _sql.Bind_Int64(this, index, Convert.ToInt64(obj, System.Globalization.CultureInfo.CurrentCulture));
          break;
        case DbType.Boolean:
        case DbType.Int16:
        case DbType.Int32:
        case DbType.UInt16:
        case DbType.UInt32:
        case DbType.SByte:
        case DbType.Byte:
          _sql.Bind_Int32(this, index, Convert.ToInt32(obj, System.Globalization.CultureInfo.CurrentCulture));
          break;
        case DbType.Single:
        case DbType.Double:
        case DbType.Currency:
        case DbType.Decimal:
          _sql.Bind_Double(this, index, Convert.ToDouble(obj, System.Globalization.CultureInfo.CurrentCulture));
          break;
        case DbType.Binary:
          _sql.Bind_Blob(this, index, (byte[])obj);
          break;
        default:
          _sql.Bind_Text(this, index, obj.ToString());
          break;
      }
    }
  }
}

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title></title>
  </head>
  <body>
    ADO.NET 2.0 SQLite Data Provider<br>
    Version 1.0.12 - Aug 5, 2005<br>
    Interop using SQLite 3.22<br>
    Written by Robert Simpson (<a href="mailto:robert@blackcastlesoft.com">robert@blackcastlesoft.com</a>)<br>
    Released to the public domain, use at your own risk!<br>
    <br>
    This provider was written and tested using the Visual Studio 2005 Beta 2 
    release.<br>
    <br>

        <FONT color="silver">Compile it. </FONT>
      </li>
    </ol>
    <b></b>
    <h2>
      <b>Version History</b></h2>
    <b>1.0.12 - August 2, 2005</b><br>
    <UL>
      <LI>
        Full support for the Compact Framework.&nbsp; Each build (Debug/Release) now 
        has a&nbsp;platform, either Win32 or Compact Framework.&nbsp; The correct 
        projects are built accordingly.&nbsp; See the&nbsp;<A href="#redist">Distributing 
          SQLite</A>
      section for information on what files need to be distributed for each 
      platform.&nbsp;
      <LI>
      Modified SQLite3.Reset() and Step() functions to transparently handle timeouts 
      while waiting on the database to become available (typically when a writer is 
      waiting on a reader to finish, or a reader is waiting on a writer to finish).
      <LI>
      Lots of code cleanup&nbsp;as suggested&nbsp;by the Code Analyzer (FxCop).
      <LI>
      Lots of updates to the helpfile.
      <LI>
        Statements&nbsp;were already prepared lazily&nbsp;in a SQLiteCommand, but 
        things are relaxed even more now.&nbsp; Statements are now only prepared if the 
        statements haven't been previously prepared and a Prepare() function is called 
        (and the command is associated with a connection) or just prior to the command 
        being executed.&nbsp;</LI></UL>
    <b>1.0.11 - August 1, 2005</b><br>
    <ul>
      <li>
        <strong>For everything except the Compact Framework, System.Data.SQLite.DLL is 
          now the <em>only</em> DLL required to use this provider!</strong>&nbsp; The 
      assembly is now a multi-module assembly, containing both the native SQLite3 
      codebase and the C# classes built on top of it.&nbsp; The Compact Framework