System.Data.SQLite
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Overview
Comment:Merge updates from trunk, including URI file name support.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | stress
Files: files | file ages | folders
SHA1: 1f317c2618e0db77bbed770fa44e0db608168328
User & Date: mistachkin 2012-07-11 06:54:56
Context
2012-07-11
07:17
More refinements to stress test. check-in: 3622f106ea user: mistachkin tags: stress
06:54
Merge updates from trunk, including URI file name support. check-in: 1f317c2618 user: mistachkin tags: stress
06:53
In the stress test, open new connections for backup operations. check-in: 125ad3db32 user: mistachkin tags: stress
06:47
Add support for URI file names. check-in: cf96d6650f user: mistachkin tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to SQLite.Interop/props/sqlite3.props.

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 * Released to the public domain, use at your own risk!
 *
-->
<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
  <PropertyGroup Label="UserMacros">
    <SQLITE_MANIFEST_VERSION>3.7.14</SQLITE_MANIFEST_VERSION>
    <SQLITE_RC_VERSION>3,7,14</SQLITE_RC_VERSION>
    <SQLITE_COMMON_DEFINES>SQLITE_THREADSAFE=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT3=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1</SQLITE_COMMON_DEFINES>
    <SQLITE_EXTRA_DEFINES>SQLITE_HAS_CODEC=1</SQLITE_EXTRA_DEFINES>
    <SQLITE_WINCE_DEFINES>SQLITE_OMIT_WAL=1</SQLITE_WINCE_DEFINES>
    <SQLITE_DEBUG_DEFINES>SQLITE_DEBUG=1;SQLITE_MEMDEBUG=1</SQLITE_DEBUG_DEFINES>
    <SQLITE_RELEASE_DEFINES>SQLITE_WIN32_MALLOC=1</SQLITE_RELEASE_DEFINES>
    <SQLITE_DISABLE_WARNINGS>4018;4055;4057;4090;4100;4127;4132;4146;4152;4210;4232;4244;4245;4389;4701;4706;4996</SQLITE_DISABLE_WARNINGS>
    <SQLITE_DISABLE_X64_WARNINGS>4232;4267;4306</SQLITE_DISABLE_X64_WARNINGS>
  </PropertyGroup>







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 * Released to the public domain, use at your own risk!
 *
-->
<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
  <PropertyGroup Label="UserMacros">
    <SQLITE_MANIFEST_VERSION>3.7.14</SQLITE_MANIFEST_VERSION>
    <SQLITE_RC_VERSION>3,7,14</SQLITE_RC_VERSION>
    <SQLITE_COMMON_DEFINES>SQLITE_THREADSAFE=1;SQLITE_USE_URI=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT3=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1</SQLITE_COMMON_DEFINES>
    <SQLITE_EXTRA_DEFINES>SQLITE_HAS_CODEC=1</SQLITE_EXTRA_DEFINES>
    <SQLITE_WINCE_DEFINES>SQLITE_OMIT_WAL=1</SQLITE_WINCE_DEFINES>
    <SQLITE_DEBUG_DEFINES>SQLITE_DEBUG=1;SQLITE_MEMDEBUG=1</SQLITE_DEBUG_DEFINES>
    <SQLITE_RELEASE_DEFINES>SQLITE_WIN32_MALLOC=1</SQLITE_RELEASE_DEFINES>
    <SQLITE_DISABLE_WARNINGS>4018;4055;4057;4090;4100;4127;4132;4146;4152;4210;4232;4244;4245;4389;4701;4706;4996</SQLITE_DISABLE_WARNINGS>
    <SQLITE_DISABLE_X64_WARNINGS>4232;4267;4306</SQLITE_DISABLE_X64_WARNINGS>
  </PropertyGroup>

Changes to SQLite.Interop/props/sqlite3.vsprops.

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	<UserMacro
		Name="SQLITE_RC_VERSION"
		Value="3,7,14"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_COMMON_DEFINES"
		Value="SQLITE_THREADSAFE=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT3=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_EXTRA_DEFINES"
		Value="SQLITE_HAS_CODEC=1"
		PerformEnvironmentSet="true"
	/>







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	<UserMacro
		Name="SQLITE_RC_VERSION"
		Value="3,7,14"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_COMMON_DEFINES"
		Value="SQLITE_THREADSAFE=1;SQLITE_USE_URI=1;SQLITE_ENABLE_COLUMN_METADATA=1;SQLITE_ENABLE_STAT3=1;SQLITE_ENABLE_FTS3=1;SQLITE_ENABLE_LOAD_EXTENSION=1;SQLITE_ENABLE_RTREE=1;SQLITE_SOUNDEX=1"
		PerformEnvironmentSet="true"
	/>
	<UserMacro
		Name="SQLITE_EXTRA_DEFINES"
		Value="SQLITE_HAS_CODEC=1"
		PerformEnvironmentSet="true"
	/>

Changes to SQLite.Interop/src/win/interop.c.

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// Additional open flags, we use this one privately
//#define SQLITE_OPEN_SHAREDCACHE      0x01000000

typedef void (*SQLITEUSERFUNC)(sqlite3_context *, int, sqlite3_value **);
typedef void (*SQLITEFUNCFINAL)(sqlite3_context *);


SQLITE_PRIVATE void * sqlite3DbMallocZero_interop(sqlite3 *db, int n)
{
  void *p;
  if (db) {
    sqlite3_mutex_enter(db->mutex);
  }
  p = sqlite3DbMallocZero(db,n);
................................................................................
    sqlite3MemdebugSetType(p, MEMTYPE_DB|MEMTYPE_HEAP);
  }
  sqlite3DbFree(db,p);
  if (db) {
    sqlite3_mutex_leave(db->mutex);
  }
}


/*
    The goal of this version of close is different than that of sqlite3_close(), and is designed to lend itself better to .NET's non-deterministic finalizers and
    the GC thread.  SQLite will not close a database if statements are open on it -- but for our purposes, we'd rather finalize all active statements
    and forcibly close the database.  The reason is simple -- a lot of people don't Dispose() of their objects correctly and let the garbage collector
    do it.  This leads to unexpected behavior when a user thinks they've closed a database, but it's still open because not all the statements have
    hit the GC yet.
................................................................................
    their memory is freed and can be used for something else.  The GC thread could potentially try and call finalize again on the statement after
    that memory was deallocated.  BAD.  So, what we need to do is make a copy of each statement, and call finalize() on the copy -- so that the original
    statement's memory is preserved, and marked as BAD, but we can still manage to finalize everything and forcibly close the database.  Later when the 
    GC gets around to calling finalize_interop() on the "bad" statement, we detect that and finish deallocating the pointer.
*/
SQLITE_API int WINAPI sqlite3_close_interop(sqlite3 *db)
{
  int ret;
  
#if SQLITE_VERSION_NUMBER >= 3007014
  ret = sqlite3_close_v2(db);
#else
  ret = sqlite3_close(db);

  if (ret == SQLITE_BUSY)
  {
    sqlite3_mutex_enter(db->mutex);

    if (!db->pVdbe)
    {
................................................................................
        ZeroMemory(po, sizeof(Vdbe));
        po->magic = VDBE_MAGIC_DEAD;
      }
    }
    sqlite3_mutex_leave(db->mutex);
    ret = sqlite3_close(db);
  }
#endif

  return ret;

}

SQLITE_API int WINAPI sqlite3_open_interop(const char*filename, int flags, sqlite3 **ppdb)
{
  int ret;
  //int sharedcache = ((flags & SQLITE_OPEN_SHAREDCACHE) != 0);
  //flags &= ~SQLITE_OPEN_SHAREDCACHE;
................................................................................

  return ret;
#endif
}

SQLITE_API int WINAPI sqlite3_reset_interop(sqlite3_stmt *stmt)
{



  int ret;

  if (((Vdbe *)stmt)->magic == VDBE_MAGIC_DEAD) return SQLITE_SCHEMA;
  ret = sqlite3_reset(stmt);
  return ret;

}

SQLITE_API int WINAPI sqlite3_create_function_interop(sqlite3 *psql, const char *zFunctionName, int nArg, int eTextRep, void *pvUser, SQLITEUSERFUNC func, SQLITEUSERFUNC funcstep, SQLITEFUNCFINAL funcfinal, int needCollSeq)
{
  int n;

  if (eTextRep == SQLITE_UTF16)







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// Additional open flags, we use this one privately
//#define SQLITE_OPEN_SHAREDCACHE      0x01000000

typedef void (*SQLITEUSERFUNC)(sqlite3_context *, int, sqlite3_value **);
typedef void (*SQLITEFUNCFINAL)(sqlite3_context *);

#if SQLITE_VERSION_NUMBER < 3007014
SQLITE_PRIVATE void * sqlite3DbMallocZero_interop(sqlite3 *db, int n)
{
  void *p;
  if (db) {
    sqlite3_mutex_enter(db->mutex);
  }
  p = sqlite3DbMallocZero(db,n);
................................................................................
    sqlite3MemdebugSetType(p, MEMTYPE_DB|MEMTYPE_HEAP);
  }
  sqlite3DbFree(db,p);
  if (db) {
    sqlite3_mutex_leave(db->mutex);
  }
}
#endif

/*
    The goal of this version of close is different than that of sqlite3_close(), and is designed to lend itself better to .NET's non-deterministic finalizers and
    the GC thread.  SQLite will not close a database if statements are open on it -- but for our purposes, we'd rather finalize all active statements
    and forcibly close the database.  The reason is simple -- a lot of people don't Dispose() of their objects correctly and let the garbage collector
    do it.  This leads to unexpected behavior when a user thinks they've closed a database, but it's still open because not all the statements have
    hit the GC yet.
................................................................................
    their memory is freed and can be used for something else.  The GC thread could potentially try and call finalize again on the statement after
    that memory was deallocated.  BAD.  So, what we need to do is make a copy of each statement, and call finalize() on the copy -- so that the original
    statement's memory is preserved, and marked as BAD, but we can still manage to finalize everything and forcibly close the database.  Later when the 
    GC gets around to calling finalize_interop() on the "bad" statement, we detect that and finish deallocating the pointer.
*/
SQLITE_API int WINAPI sqlite3_close_interop(sqlite3 *db)
{


#if SQLITE_VERSION_NUMBER >= 3007014
  return sqlite3_close_v2(db);
#else
  int ret = sqlite3_close(db);

  if (ret == SQLITE_BUSY)
  {
    sqlite3_mutex_enter(db->mutex);

    if (!db->pVdbe)
    {
................................................................................
        ZeroMemory(po, sizeof(Vdbe));
        po->magic = VDBE_MAGIC_DEAD;
      }
    }
    sqlite3_mutex_leave(db->mutex);
    ret = sqlite3_close(db);
  }


  return ret;
#endif
}

SQLITE_API int WINAPI sqlite3_open_interop(const char*filename, int flags, sqlite3 **ppdb)
{
  int ret;
  //int sharedcache = ((flags & SQLITE_OPEN_SHAREDCACHE) != 0);
  //flags &= ~SQLITE_OPEN_SHAREDCACHE;
................................................................................

  return ret;
#endif
}

SQLITE_API int WINAPI sqlite3_reset_interop(sqlite3_stmt *stmt)
{
#if SQLITE_VERSION_NUMBER >= 3007014
  return sqlite3_reset(stmt);
#else
  int ret;

  if (((Vdbe *)stmt)->magic == VDBE_MAGIC_DEAD) return SQLITE_SCHEMA;
  ret = sqlite3_reset(stmt);
  return ret;
#endif
}

SQLITE_API int WINAPI sqlite3_create_function_interop(sqlite3 *psql, const char *zFunctionName, int nArg, int eTextRep, void *pvUser, SQLITEUSERFUNC func, SQLITEUSERFUNC funcstep, SQLITEFUNCFINAL funcfinal, int needCollSeq)
{
  int n;

  if (eTextRep == SQLITE_UTF16)

Changes to System.Data.SQLite/SQLiteBase.cs.

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  [Flags]
  internal enum SQLiteOpenFlagsEnum
  {
    None = 0,
    ReadOnly = 0x01,
    ReadWrite = 0x02,
    Create = 0x04,

    SharedCache = 0x01000000,
    Default = 0x06,
  }

  /// <summary>
  /// The extra behavioral flags that can be applied to a connection.
  /// </summary>







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  [Flags]
  internal enum SQLiteOpenFlagsEnum
  {
    None = 0,
    ReadOnly = 0x01,
    ReadWrite = 0x02,
    Create = 0x04,
    Uri = 0x40,
    SharedCache = 0x01000000,
    Default = 0x06,
  }

  /// <summary>
  /// The extra behavioral flags that can be applied to a connection.
  /// </summary>

Changes to System.Data.SQLite/SQLiteConnection.cs.

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      string s = connectionString;
      int n;
      SortedList<string, string> ls = new SortedList<string, string>(StringComparer.OrdinalIgnoreCase);

      // First split into semi-colon delimited values.  The Split() function of SQLiteBase accounts for and properly
      // skips semi-colons in quoted strings
      string[] arParts = SQLiteConvert.Split(s, ';');
      string[] arPiece;

      int x = arParts.Length;
      // For each semi-colon piece, split into key and value pairs by the presence of the = sign
      for (n = 0; n < x; n++)
      {
        arPiece = SQLiteConvert.Split(arParts[n], '=');
        if (arPiece.Length == 2)
        {

          ls.Add(arPiece[0], arPiece[1]);
        }

        else throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, "Invalid ConnectionString format for parameter \"{0}\"", (arPiece.Length > 0) ? arPiece[0] : "null"));
      }
      return ls;
    }

#if !PLATFORM_COMPACTFRAMEWORK
    /// <summary>
    /// Manual distributed transaction enlistment support
................................................................................

      Close();

      SortedList<string, string> opts = ParseConnectionString(_connectionString);

      _flags = (SQLiteConnectionFlags)Enum.Parse(typeof(SQLiteConnectionFlags), FindKey(opts, "Flags", "Default"), true);


      string fileName;

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

      fileName = FindKey(opts, "Data Source", "");

      if (String.IsNullOrEmpty(fileName))
      {
        fileName = FindKey(opts, "Uri", "");
        if (String.IsNullOrEmpty(fileName))



          throw new ArgumentException("Data Source cannot be empty.  Use :memory: to open an in-memory database");



        else
          fileName = MapUriPath(fileName);
      }



      if (String.Compare(fileName, ":MEMORY:", StringComparison.OrdinalIgnoreCase) == 0)
        fileName = ":memory:";
      else
      {
#if PLATFORM_COMPACTFRAMEWORK
       if (fileName.StartsWith("./") || fileName.StartsWith(".\\"))
         fileName = Path.GetDirectoryName(System.Reflection.Assembly.GetCallingAssembly().GetName().CodeBase) + fileName.Substring(1);
#endif
       fileName = ExpandFileName(fileName);
      }


      try
      {
        bool usePooling = (SQLiteConvert.ToBoolean(FindKey(opts, "Pooling", Boolean.FalseString)) == true);
        int maxPoolSize = Convert.ToInt32(FindKey(opts, "Max Pool Size", "100"), CultureInfo.InvariantCulture);

        _defaultTimeout = Convert.ToInt32(FindKey(opts, "Default Timeout", "30"), CultureInfo.CurrentCulture);

................................................................................
          flags &= ~SQLiteOpenFlagsEnum.Create;
        }
        else
        {
          flags |= SQLiteOpenFlagsEnum.ReadWrite;
        }




        _sql.Open(fileName, _flags, flags, maxPoolSize, usePooling);

        _binaryGuid = (SQLiteConvert.ToBoolean(FindKey(opts, "BinaryGUID", Boolean.TrueString)) == true);

#if INTEROP_CODEC
        string password = FindKey(opts, "Password", null);

................................................................................
        if (String.IsNullOrEmpty(password) == false)
          _sql.SetPassword(System.Text.UTF8Encoding.UTF8.GetBytes(password));
        else if (_password != null)
          _sql.SetPassword(_password);
        _password = null;
#endif


        _dataSource = Path.GetFileNameWithoutExtension(fileName);



        _version++;

        ConnectionState oldstate = _connectionState;
        _connectionState = ConnectionState.Open;
        try
        {
          using (SQLiteCommand cmd = CreateCommand())
          {
            string defValue;

            if (fileName != ":memory:")
            {
              defValue = FindKey(opts, "Page Size", "1024");
              if (Convert.ToInt32(defValue, CultureInfo.InvariantCulture) != 1024)
              {
                cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA page_size={0}", defValue);
                cmd.ExecuteNonQuery();
              }







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      string s = connectionString;
      int n;
      SortedList<string, string> ls = new SortedList<string, string>(StringComparer.OrdinalIgnoreCase);

      // First split into semi-colon delimited values.  The Split() function of SQLiteBase accounts for and properly
      // skips semi-colons in quoted strings
      string[] arParts = SQLiteConvert.Split(s, ';');


      int x = arParts.Length;
      // For each semi-colon piece, split into key and value pairs by the presence of the = sign
      for (n = 0; n < x; n++)
      {
        int indexOf = arParts[n].IndexOf('=');


        if (indexOf != -1)
          ls.Add(arParts[n].Substring(0, indexOf), arParts[n].Substring(indexOf + 1));

        else
          throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, "Invalid ConnectionString format for part \"{0}\"", arParts[n]));
      }
      return ls;
    }

#if !PLATFORM_COMPACTFRAMEWORK
    /// <summary>
    /// Manual distributed transaction enlistment support
................................................................................

      Close();

      SortedList<string, string> opts = ParseConnectionString(_connectionString);

      _flags = (SQLiteConnectionFlags)Enum.Parse(typeof(SQLiteConnectionFlags), FindKey(opts, "Flags", "Default"), true);

      bool fullUri = false;
      string fileName;

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

      fileName = FindKey(opts, "Data Source", "");

      if (String.IsNullOrEmpty(fileName))
      {
        fileName = FindKey(opts, "Uri", "");
        if (String.IsNullOrEmpty(fileName))
        {
          fileName = FindKey(opts, "FullUri", "");
          if (String.IsNullOrEmpty(fileName))
            throw new ArgumentException("Data Source cannot be empty.  Use :memory: to open an in-memory database");
          else
            fullUri = true;
        }
        else
          fileName = MapUriPath(fileName);
      }

      if (!fullUri)
      {
        if (String.Compare(fileName, ":MEMORY:", StringComparison.OrdinalIgnoreCase) == 0)
          fileName = ":memory:";
        else
        {
#if PLATFORM_COMPACTFRAMEWORK
          if (fileName.StartsWith("./") || fileName.StartsWith(".\\"))
            fileName = Path.GetDirectoryName(System.Reflection.Assembly.GetCallingAssembly().GetName().CodeBase) + fileName.Substring(1);
#endif
          fileName = ExpandFileName(fileName);
        }
      }

      try
      {
        bool usePooling = (SQLiteConvert.ToBoolean(FindKey(opts, "Pooling", Boolean.FalseString)) == true);
        int maxPoolSize = Convert.ToInt32(FindKey(opts, "Max Pool Size", "100"), CultureInfo.InvariantCulture);

        _defaultTimeout = Convert.ToInt32(FindKey(opts, "Default Timeout", "30"), CultureInfo.CurrentCulture);

................................................................................
          flags &= ~SQLiteOpenFlagsEnum.Create;
        }
        else
        {
          flags |= SQLiteOpenFlagsEnum.ReadWrite;
        }

        if (fullUri)
            flags |= SQLiteOpenFlagsEnum.Uri;

        _sql.Open(fileName, _flags, flags, maxPoolSize, usePooling);

        _binaryGuid = (SQLiteConvert.ToBoolean(FindKey(opts, "BinaryGUID", Boolean.TrueString)) == true);

#if INTEROP_CODEC
        string password = FindKey(opts, "Password", null);

................................................................................
        if (String.IsNullOrEmpty(password) == false)
          _sql.SetPassword(System.Text.UTF8Encoding.UTF8.GetBytes(password));
        else if (_password != null)
          _sql.SetPassword(_password);
        _password = null;
#endif

        if (!fullUri)
          _dataSource = Path.GetFileNameWithoutExtension(fileName);
        else
          _dataSource = fileName;

        _version++;

        ConnectionState oldstate = _connectionState;
        _connectionState = ConnectionState.Open;
        try
        {
          using (SQLiteCommand cmd = CreateCommand())
          {
            string defValue;

            if (!fullUri && fileName != ":memory:")
            {
              defValue = FindKey(opts, "Page Size", "1024");
              if (Convert.ToInt32(defValue, CultureInfo.InvariantCulture) != 1024)
              {
                cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA page_size={0}", defValue);
                cmd.ExecuteNonQuery();
              }

Changes to Tests/backup.eagle.

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

for {set i 0} {$i < [llength $params(pages)]} {incr i} {
  set pages [lindex $params(pages) $i]
  set callback [lindex $params(callbacks) $i]

  runTest {test [appendArgs backup-1. $i] {BackupDatabase method} -setup {
    setupDb [set fileName(1) :memory:] "" "" "" "" "" false memDb
    setupDb [set fileName(2) [appendArgs backup-1. $i .db]]
  } -body {
    set id [object invoke Interpreter.GetActive NextId]
    set dataSource [file join [getDatabaseDirectory] $fileName(2)]

    sql execute $memDb {
      CREATE TABLE t1(x TEXT);







|







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

for {set i 0} {$i < [llength $params(pages)]} {incr i} {
  set pages [lindex $params(pages) $i]
  set callback [lindex $params(callbacks) $i]

  runTest {test [appendArgs backup-1. $i] {BackupDatabase method} -setup {
    setupDb [set fileName(1) :memory:] "" "" "" "" "" false false memDb
    setupDb [set fileName(2) [appendArgs backup-1. $i .db]]
  } -body {
    set id [object invoke Interpreter.GetActive NextId]
    set dataSource [file join [getDatabaseDirectory] $fileName(2)]

    sql execute $memDb {
      CREATE TABLE t1(x TEXT);

Changes to Tests/common.eagle.

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      eval $command
    }
 
    proc isMemoryDb { fileName } {
      #
      # NOTE: Is the specified database file name really an in-memory database?
      #
      return [expr {$fileName eq ":memory:"}]

    }
 
    proc setupDb {
            fileName {mode ""} {dateTimeFormat ""} {dateTimeKind ""} {flags ""}
            {extra ""} {delete true} {varName db} } {
      #
      # NOTE: First, see if the caller has requested an in-memory database.
      #
      set isMemory [isMemoryDb $fileName]

      #
      # NOTE: For now, all test databases used by the test suite are placed into
................................................................................
      # NOTE: Refer to the specified variable (e.g. "db") in the context of the
      #       caller.  The handle to the opened database will be stored there.
      #
      upvar 1 $varName db

      #
      # NOTE: Start building the connection string.  The only required portion
      #       of the connection string is the database file name itself.



      #



      set connection {Data Source=${fileName}}


      #
      # NOTE: If the caller specified a journal mode, add the necessary portion
      #       of the connection string now.
      #
      if {[string length $mode] > 0} then {
        append connection {;Journal Mode=${mode}}







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      eval $command
    }
 
    proc isMemoryDb { fileName } {
      #
      # NOTE: Is the specified database file name really an in-memory database?
      #
      return [expr {$fileName eq ":memory:" || \
          [string range $fileName 0 12] eq "file::memory:"}]
    }
 
    proc setupDb {
            fileName {mode ""} {dateTimeFormat ""} {dateTimeKind ""} {flags ""}
            {extra ""} {delete true} {uri false} {varName db} } {
      #
      # NOTE: First, see if the caller has requested an in-memory database.
      #
      set isMemory [isMemoryDb $fileName]

      #
      # NOTE: For now, all test databases used by the test suite are placed into
................................................................................
      # NOTE: Refer to the specified variable (e.g. "db") in the context of the
      #       caller.  The handle to the opened database will be stored there.
      #
      upvar 1 $varName db

      #
      # NOTE: Start building the connection string.  The only required portion
      #       of the connection string is the data source, which contains the
      #       database file name itself.  If the caller wants to use a URI as
      #       the data source, use the FullUri connection string property to
      #       prevent the data source string from being mangled.
      #
      if {$uri} then {
        set connection {FullUri=${fileName}}
      } else {
        set connection {Data Source=${fileName}}
      }

      #
      # NOTE: If the caller specified a journal mode, add the necessary portion
      #       of the connection string now.
      #
      if {[string length $mode] > 0} then {
        append connection {;Journal Mode=${mode}}