public virtual void TestReadNestedCFP()
{
Directory newDir = NewDirectory();
CompoundFileDirectory csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), true);
CompoundFileDirectory nested = new CompoundFileDirectory(newDir, "b.cfs", NewIOContext(Random()), true);
IndexOutput @out = nested.CreateOutput("b.xyz", NewIOContext(Random()));
IndexOutput out1 = nested.CreateOutput("b_1.xyz", NewIOContext(Random()));
@out.WriteInt(0);
out1.WriteInt(1);
@out.Dispose();
out1.Dispose();
nested.Dispose();
newDir.Copy(csw, "b.cfs", "b.cfs", NewIOContext(Random()));
newDir.Copy(csw, "b.cfe", "b.cfe", NewIOContext(Random()));
newDir.DeleteFile("b.cfs");
newDir.DeleteFile("b.cfe");
csw.Dispose();
Assert.AreEqual(2, newDir.ListAll().Length);
csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), false);
Assert.AreEqual(2, csw.ListAll().Length);
nested = new CompoundFileDirectory(csw, "b.cfs", NewIOContext(Random()), false);
Assert.AreEqual(2, nested.ListAll().Length);
IndexInput openInput = nested.OpenInput("b.xyz", NewIOContext(Random()));
Assert.AreEqual(0, openInput.ReadInt());
openInput.Dispose();
openInput = nested.OpenInput("b_1.xyz", NewIOContext(Random()));
Assert.AreEqual(1, openInput.ReadInt());
openInput.Dispose();
nested.Dispose();
csw.Dispose();
newDir.Dispose();
}
private void CheckHeaders(Directory dir)
{
foreach (string file in dir.ListAll())
{
if (file.Equals(IndexWriter.WRITE_LOCK_NAME))
{
continue; // write.lock has no footer, thats ok
}
if (file.EndsWith(IndexFileNames.COMPOUND_FILE_EXTENSION, StringComparison.Ordinal))
{
CompoundFileDirectory cfsDir = new CompoundFileDirectory(dir, file, NewIOContext(Random()), false);
CheckHeaders(cfsDir); // recurse into cfs
cfsDir.Dispose();
}
IndexInput @in = null;
bool success = false;
try
{
@in = dir.OpenInput(file, NewIOContext(Random()));
CodecUtil.ChecksumEntireFile(@in);
success = true;
}
finally
{
if (success)
{
IOUtils.Dispose(@in);
}
else
{
IOUtils.DisposeWhileHandlingException(@in);
}
}
}
}
public virtual void TestReadPastEOF()
{
SetUp_2();
var cr = new CompoundFileDirectory(Dir, "f.comp", NewIOContext(Random()), false);
IndexInput @is = cr.OpenInput("f2", NewIOContext(Random()));
@is.Seek(@is.Length() - 10);
var b = new byte[100];
@is.ReadBytes(b, 0, 10);
try
{
@is.ReadByte();
Assert.Fail("Single byte read past end of file");
}
catch (IOException e)
{
/* success */
//System.out.println("SUCCESS: single byte read past end of file: " + e);
}
@is.Seek(@is.Length() - 10);
try
{
@is.ReadBytes(b, 0, 50);
Assert.Fail("Block read past end of file");
}
catch (IOException e)
{
/* success */
//System.out.println("SUCCESS: block read past end of file: " + e);
}
@is.Dispose();
cr.Dispose();
}
public virtual void TestTwoFiles()
{
CreateSequenceFile(Dir, "d1", (sbyte)0, 15);
CreateSequenceFile(Dir, "d2", (sbyte)0, 114);
CompoundFileDirectory csw = new CompoundFileDirectory(Dir, "d.cfs", NewIOContext(Random), true);
Dir.Copy(csw, "d1", "d1", NewIOContext(Random));
Dir.Copy(csw, "d2", "d2", NewIOContext(Random));
csw.Dispose();
CompoundFileDirectory csr = new CompoundFileDirectory(Dir, "d.cfs", NewIOContext(Random), false);
IndexInput expected = Dir.OpenInput("d1", NewIOContext(Random));
IndexInput actual = csr.OpenInput("d1", NewIOContext(Random));
AssertSameStreams("d1", expected, actual);
AssertSameSeekBehavior("d1", expected, actual);
expected.Dispose();
actual.Dispose();
expected = Dir.OpenInput("d2", NewIOContext(Random));
actual = csr.OpenInput("d2", NewIOContext(Random));
AssertSameStreams("d2", expected, actual);
AssertSameSeekBehavior("d2", expected, actual);
expected.Dispose();
actual.Dispose();
csr.Dispose();
}
// checks that we can open all files returned by listAll!
private void CheckFiles(Directory dir)
{
foreach (string file in dir.ListAll())
{
if (file.EndsWith(IndexFileNames.COMPOUND_FILE_EXTENSION, StringComparison.Ordinal))
{
CompoundFileDirectory cfsDir = new CompoundFileDirectory(dir, file, NewIOContext(Random), false);
CheckFiles(cfsDir); // recurse into cfs
cfsDir.Dispose();
}
IndexInput @in = null;
bool success = false;
try
{
@in = dir.OpenInput(file, NewIOContext(Random));
success = true;
}
finally
{
if (success)
{
IOUtils.Dispose(@in);
}
else
{
IOUtils.DisposeWhileHandlingException(@in);
}
}
}
}
/// <summary>
/// Setup a larger compound file with a number of components, each of
/// which is a sequential file (so that we can easily tell that we are
/// reading in the right byte). The methods sets up 20 files - f0 to f19,
/// the size of each file is 1000 bytes.
/// </summary>
private void SetUp_2()
{
CompoundFileDirectory cw = new CompoundFileDirectory(Dir, "f.comp", NewIOContext(Random()), true);
for (int i = 0; i < 20; i++)
{
CreateSequenceFile(Dir, "f" + i, (sbyte)0, 2000);
string fileName = "f" + i;
Dir.Copy(cw, fileName, fileName, NewIOContext(Random()));
}
cw.Dispose();
}
public virtual void TestEmptyCFS()
{
Directory newDir = NewDirectory();
CompoundFileDirectory csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), true);
csw.Dispose();
CompoundFileDirectory csr = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), false);
Assert.AreEqual(0, csr.ListAll().Length);
csr.Dispose();
newDir.Dispose();
}
public virtual void TestDoubleClose()
{
Directory newDir = NewDirectory();
CompoundFileDirectory csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), true);
IndexOutput @out = csw.CreateOutput("d.xyz", NewIOContext(Random()));
@out.WriteInt(0);
@out.Dispose();
csw.Dispose();
// close a second time - must have no effect according to IDisposable
csw.Dispose();
csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), false);
IndexInput openInput = csw.OpenInput("d.xyz", NewIOContext(Random()));
Assert.AreEqual(0, openInput.ReadInt());
openInput.Dispose();
csw.Dispose();
// close a second time - must have no effect according to IDisposable
csw.Dispose();
newDir.Dispose();
}
public override TermVectorsReader VectorsReader(Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, IOContext context)
{
string fileName = IndexFileNames.SegmentFileName(Lucene3xSegmentInfoFormat.GetDocStoreSegment(segmentInfo), "", Lucene3xTermVectorsReader.VECTORS_FIELDS_EXTENSION);
// Unfortunately, for 3.x indices, each segment's
// FieldInfos can lie about hasVectors (claim it's true
// when really it's false).... so we have to carefully
// check if the files really exist before trying to open
// them (4.x has fixed this):
bool exists;
if (Lucene3xSegmentInfoFormat.GetDocStoreOffset(segmentInfo) != -1 && Lucene3xSegmentInfoFormat.GetDocStoreIsCompoundFile(segmentInfo))
{
string cfxFileName = IndexFileNames.SegmentFileName(Lucene3xSegmentInfoFormat.GetDocStoreSegment(segmentInfo), "", Lucene3xCodec.COMPOUND_FILE_STORE_EXTENSION);
if (segmentInfo.Dir.FileExists(cfxFileName))
{
Directory cfsDir = new CompoundFileDirectory(segmentInfo.Dir, cfxFileName, context, false);
try
{
exists = cfsDir.FileExists(fileName);
}
finally
{
cfsDir.Dispose();
}
}
else
{
exists = false;
}
}
else
{
exists = directory.FileExists(fileName);
}
if (!exists)
{
// 3x's FieldInfos sometimes lies and claims a segment
// has vectors when it doesn't:
return(null);
}
else
{
return(new Lucene3xTermVectorsReader(directory, segmentInfo, fieldInfos, context));
}
}
public virtual void TestAppend()
{
Directory newDir = NewDirectory();
CompoundFileDirectory csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random), true);
int size = 5 + Random.Next(128);
for (int j = 0; j < 2; j++)
{
IndexOutput os = csw.CreateOutput("seg_" + j + "_foo.txt", NewIOContext(Random));
for (int i = 0; i < size; i++)
{
os.WriteInt32(i * j);
}
os.Dispose();
string[] listAll = newDir.ListAll();
Assert.AreEqual(1, listAll.Length);
Assert.AreEqual("d.cfs", listAll[0]);
}
CreateSequenceFile(Dir, "d1", (sbyte)0, 15);
Dir.Copy(csw, "d1", "d1", NewIOContext(Random));
string[] listAll_ = newDir.ListAll();
Assert.AreEqual(1, listAll_.Length);
Assert.AreEqual("d.cfs", listAll_[0]);
csw.Dispose();
CompoundFileDirectory csr = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random), false);
for (int j = 0; j < 2; j++)
{
IndexInput openInput = csr.OpenInput("seg_" + j + "_foo.txt", NewIOContext(Random));
Assert.AreEqual(size * 4, openInput.Length);
for (int i = 0; i < size; i++)
{
Assert.AreEqual(i * j, openInput.ReadInt32());
}
openInput.Dispose();
}
IndexInput expected = Dir.OpenInput("d1", NewIOContext(Random));
IndexInput actual = csr.OpenInput("d1", NewIOContext(Random));
AssertSameStreams("d1", expected, actual);
AssertSameSeekBehavior("d1", expected, actual);
expected.Dispose();
actual.Dispose();
csr.Dispose();
newDir.Dispose();
}
public virtual void TestRandomFiles()
{
// Setup the test segment
string segment = "test";
int chunk = 1024; // internal buffer size used by the stream
CreateRandomFile(Dir, segment + ".zero", 0);
CreateRandomFile(Dir, segment + ".one", 1);
CreateRandomFile(Dir, segment + ".ten", 10);
CreateRandomFile(Dir, segment + ".hundred", 100);
CreateRandomFile(Dir, segment + ".big1", chunk);
CreateRandomFile(Dir, segment + ".big2", chunk - 1);
CreateRandomFile(Dir, segment + ".big3", chunk + 1);
CreateRandomFile(Dir, segment + ".big4", 3 * chunk);
CreateRandomFile(Dir, segment + ".big5", 3 * chunk - 1);
CreateRandomFile(Dir, segment + ".big6", 3 * chunk + 1);
CreateRandomFile(Dir, segment + ".big7", 1000 * chunk);
// Setup extraneous files
CreateRandomFile(Dir, "onetwothree", 100);
CreateRandomFile(Dir, segment + ".notIn", 50);
CreateRandomFile(Dir, segment + ".notIn2", 51);
// Now test
CompoundFileDirectory csw = new CompoundFileDirectory(Dir, "test.cfs", NewIOContext(Random), true);
string[] data = new string[] { ".zero", ".one", ".ten", ".hundred", ".big1", ".big2", ".big3", ".big4", ".big5", ".big6", ".big7" };
for (int i = 0; i < data.Length; i++)
{
string fileName = segment + data[i];
Dir.Copy(csw, fileName, fileName, NewIOContext(Random));
}
csw.Dispose();
CompoundFileDirectory csr = new CompoundFileDirectory(Dir, "test.cfs", NewIOContext(Random), false);
for (int i = 0; i < data.Length; i++)
{
IndexInput check = Dir.OpenInput(segment + data[i], NewIOContext(Random));
IndexInput test = csr.OpenInput(segment + data[i], NewIOContext(Random));
AssertSameStreams(data[i], check, test);
AssertSameSeekBehavior(data[i], check, test);
test.Dispose();
check.Dispose();
}
csr.Dispose();
}
public virtual void TestClonedStreamsClosing()
{
SetUp_2();
CompoundFileDirectory cr = new CompoundFileDirectory(Dir, "f.comp", NewIOContext(Random), false);
// basic clone
IndexInput expected = Dir.OpenInput("f11", NewIOContext(Random));
// this test only works for FSIndexInput
Assert.IsTrue(TestHelper.IsSimpleFSIndexInput(expected));
Assert.IsTrue(TestHelper.IsSimpleFSIndexInputOpen(expected));
IndexInput one = cr.OpenInput("f11", NewIOContext(Random));
IndexInput two = (IndexInput)one.Clone();
AssertSameStreams("basic clone one", expected, one);
expected.Seek(0);
AssertSameStreams("basic clone two", expected, two);
// Now close the first stream
one.Dispose();
// The following should really fail since we couldn't expect to
// access a file once close has been called on it (regardless of
// buffering and/or clone magic)
expected.Seek(0);
two.Seek(0);
AssertSameStreams("basic clone two/2", expected, two);
// Now close the compound reader
cr.Dispose();
// The following may also fail since the compound stream is closed
expected.Seek(0);
two.Seek(0);
//assertSameStreams("basic clone two/3", expected, two);
// Now close the second clone
two.Dispose();
expected.Seek(0);
two.Seek(0);
//assertSameStreams("basic clone two/4", expected, two);
expected.Dispose();
}
public virtual void TestFileNotFound()
{
SetUp_2();
CompoundFileDirectory cr = new CompoundFileDirectory(Dir, "f.comp", NewIOContext(Random()), false);
// Open two files
try
{
cr.OpenInput("bogus", NewIOContext(Random()));
Assert.Fail("File not found");
}
catch (Exception e)
{
/* success */
//System.out.println("SUCCESS: File Not Found: " + e);
}
cr.Dispose();
}
public virtual void TestAppendTwice()
{
Directory newDir = NewDirectory();
CompoundFileDirectory csw = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), true);
CreateSequenceFile(newDir, "d1", (sbyte)0, 15);
IndexOutput @out = csw.CreateOutput("d.xyz", NewIOContext(Random()));
@out.WriteInt(0);
@out.Dispose();
Assert.AreEqual(1, csw.ListAll().Length);
Assert.AreEqual("d.xyz", csw.ListAll()[0]);
csw.Dispose();
CompoundFileDirectory cfr = new CompoundFileDirectory(newDir, "d.cfs", NewIOContext(Random()), false);
Assert.AreEqual(1, cfr.ListAll().Length);
Assert.AreEqual("d.xyz", cfr.ListAll()[0]);
cfr.Dispose();
newDir.Dispose();
}
public virtual void TestManySubFiles()
{
Directory d = NewFSDirectory(CreateTempDir("CFSManySubFiles"));
int FILE_COUNT = AtLeast(500);
for (int fileIdx = 0; fileIdx < FILE_COUNT; fileIdx++)
{
IndexOutput @out = d.CreateOutput("file." + fileIdx, NewIOContext(Random));
@out.WriteByte((byte)(sbyte)fileIdx);
@out.Dispose();
}
CompoundFileDirectory cfd = new CompoundFileDirectory(d, "c.cfs", NewIOContext(Random), true);
for (int fileIdx = 0; fileIdx < FILE_COUNT; fileIdx++)
{
string fileName = "file." + fileIdx;
d.Copy(cfd, fileName, fileName, NewIOContext(Random));
}
cfd.Dispose();
IndexInput[] ins = new IndexInput[FILE_COUNT];
CompoundFileDirectory cfr = new CompoundFileDirectory(d, "c.cfs", NewIOContext(Random), false);
for (int fileIdx = 0; fileIdx < FILE_COUNT; fileIdx++)
{
ins[fileIdx] = cfr.OpenInput("file." + fileIdx, NewIOContext(Random));
}
for (int fileIdx = 0; fileIdx < FILE_COUNT; fileIdx++)
{
Assert.AreEqual((byte)fileIdx, ins[fileIdx].ReadByte());
}
for (int fileIdx = 0; fileIdx < FILE_COUNT; fileIdx++)
{
ins[fileIdx].Dispose();
}
cfr.Dispose();
d.Dispose();
}
public virtual void TestSingleFile()
{
int[] data = new int[] { 0, 1, 10, 100 };
for (int i = 0; i < data.Length; i++)
{
string name = "t" + data[i];
CreateSequenceFile(Dir, name, (sbyte)0, data[i]);
CompoundFileDirectory csw = new CompoundFileDirectory(Dir, name + ".cfs", NewIOContext(Random), true);
Dir.Copy(csw, name, name, NewIOContext(Random));
csw.Dispose();
CompoundFileDirectory csr = new CompoundFileDirectory(Dir, name + ".cfs", NewIOContext(Random), false);
IndexInput expected = Dir.OpenInput(name, NewIOContext(Random));
IndexInput actual = csr.OpenInput(name, NewIOContext(Random));
AssertSameStreams(name, expected, actual);
AssertSameSeekBehavior(name, expected, actual);
expected.Dispose();
actual.Dispose();
csr.Dispose();
}
}
private void CheckHeaders(Directory dir)
{
foreach (string file in dir.ListAll())
{
if (file.Equals(IndexWriter.WRITE_LOCK_NAME, StringComparison.Ordinal))
{
continue; // write.lock has no header, thats ok
}
if (file.Equals(IndexFileNames.SEGMENTS_GEN, StringComparison.Ordinal))
{
continue; // segments.gen has no header, thats ok
}
if (file.EndsWith(IndexFileNames.COMPOUND_FILE_EXTENSION, StringComparison.Ordinal))
{
CompoundFileDirectory cfsDir = new CompoundFileDirectory(dir, file, NewIOContext(Random()), false);
CheckHeaders(cfsDir); // recurse into cfs
cfsDir.Dispose();
}
IndexInput @in = null;
bool success = false;
try
{
@in = dir.OpenInput(file, NewIOContext(Random()));
int val = @in.ReadInt32();
Assert.AreEqual(CodecUtil.CODEC_MAGIC, val, file + " has no codec header, instead found: " + val);
success = true;
}
finally
{
if (success)
{
IOUtils.Dispose(@in);
}
else
{
IOUtils.DisposeWhileHandlingException(@in);
}
}
}
}
/// <summary>
/// Prints the filename and size of each file within a given compound file.
/// Add the -extract flag to extract files to the current working directory.
/// In order to make the extracted version of the index work, you have to copy
/// the segments file from the compound index into the directory where the extracted files are stored. </summary>
///// <param name="args"> Usage: org.apache.lucene.index.IndexReader [-extract] <cfsfile> </param>
public static void Main(string[] args)
{
string filename = null;
bool extract = false;
string dirImpl = null;
int j = 0;
while (j < args.Length)
{
string arg = args[j];
if ("-extract".Equals(arg, StringComparison.Ordinal))
{
extract = true;
}
else if ("-dir-impl".Equals(arg, StringComparison.Ordinal))
{
if (j == args.Length - 1)
{
// LUCENENET specific - our wrapper console shows the correct usage
throw new ArgumentException("ERROR: missing value for --directory-type option");
//Console.WriteLine("ERROR: missing value for -dir-impl option");
//Environment.Exit(1);
}
j++;
dirImpl = args[j];
}
else if (filename == null)
{
filename = arg;
}
j++;
}
if (filename == null)
{
// LUCENENET specific - our wrapper console shows the correct usage
throw new ArgumentException("ERROR: CFS-FILE is required");
//Console.WriteLine("Usage: org.apache.lucene.index.CompoundFileExtractor [-extract] [-dir-impl X] <cfsfile>");
//return;
}
Store.Directory dir = null;
CompoundFileDirectory cfr = null;
IOContext context = IOContext.READ;
try
{
FileInfo file = new FileInfo(filename);
string dirname = file.DirectoryName;
filename = file.Name;
if (dirImpl == null)
{
dir = FSDirectory.Open(new DirectoryInfo(dirname));
}
else
{
dir = CommandLineUtil.NewFSDirectory(dirImpl, new DirectoryInfo(dirname));
}
cfr = new CompoundFileDirectory(dir, filename, IOContext.DEFAULT, false);
string[] files = cfr.ListAll();
ArrayUtil.TimSort(files); // sort the array of filename so that the output is more readable
for (int i = 0; i < files.Length; ++i)
{
long len = cfr.FileLength(files[i]);
if (extract)
{
Console.WriteLine("extract " + files[i] + " with " + len + " bytes to local directory...");
using (IndexInput ii = cfr.OpenInput(files[i], context))
{
using (FileStream f = new FileStream(files[i], FileMode.Open, FileAccess.ReadWrite))
{
// read and write with a small buffer, which is more effective than reading byte by byte
byte[] buffer = new byte[1024];
int chunk = buffer.Length;
while (len > 0)
{
int bufLen = (int)Math.Min(chunk, len);
ii.ReadBytes(buffer, 0, bufLen);
f.Write(buffer, 0, bufLen);
len -= bufLen;
}
}
}
}
else
{
Console.WriteLine(files[i] + ": " + len + " bytes");
}
}
}
catch (IOException ioe)
{
Console.WriteLine(ioe.ToString());
//Console.Write(ioe.StackTrace);
}
finally
{
try
{
if (dir != null)
{
dir.Dispose();
}
if (cfr != null)
{
cfr.Dispose();
}
}
catch (IOException ioe)
{
Console.WriteLine(ioe.ToString());
//Console.Write(ioe.StackTrace);
}
}
}
public virtual void TestRandomAccessClones()
{
SetUp_2();
CompoundFileDirectory cr = new CompoundFileDirectory(Dir, "f.comp", NewIOContext(Random), false);
// Open two files
IndexInput e1 = cr.OpenInput("f11", NewIOContext(Random));
IndexInput e2 = cr.OpenInput("f3", NewIOContext(Random));
IndexInput a1 = (IndexInput)e1.Clone();
IndexInput a2 = (IndexInput)e2.Clone();
// Seek the first pair
e1.Seek(100);
a1.Seek(100);
Assert.AreEqual(100, e1.GetFilePointer());
Assert.AreEqual(100, a1.GetFilePointer());
byte be1 = e1.ReadByte();
byte ba1 = a1.ReadByte();
Assert.AreEqual(be1, ba1);
// Now seek the second pair
e2.Seek(1027);
a2.Seek(1027);
Assert.AreEqual(1027, e2.GetFilePointer());
Assert.AreEqual(1027, a2.GetFilePointer());
byte be2 = e2.ReadByte();
byte ba2 = a2.ReadByte();
Assert.AreEqual(be2, ba2);
// Now make sure the first one didn't move
Assert.AreEqual(101, e1.GetFilePointer());
Assert.AreEqual(101, a1.GetFilePointer());
be1 = e1.ReadByte();
ba1 = a1.ReadByte();
Assert.AreEqual(be1, ba1);
// Now more the first one again, past the buffer length
e1.Seek(1910);
a1.Seek(1910);
Assert.AreEqual(1910, e1.GetFilePointer());
Assert.AreEqual(1910, a1.GetFilePointer());
be1 = e1.ReadByte();
ba1 = a1.ReadByte();
Assert.AreEqual(be1, ba1);
// Now make sure the second set didn't move
Assert.AreEqual(1028, e2.GetFilePointer());
Assert.AreEqual(1028, a2.GetFilePointer());
be2 = e2.ReadByte();
ba2 = a2.ReadByte();
Assert.AreEqual(be2, ba2);
// Move the second set back, again cross the buffer size
e2.Seek(17);
a2.Seek(17);
Assert.AreEqual(17, e2.GetFilePointer());
Assert.AreEqual(17, a2.GetFilePointer());
be2 = e2.ReadByte();
ba2 = a2.ReadByte();
Assert.AreEqual(be2, ba2);
// Finally, make sure the first set didn't move
// Now make sure the first one didn't move
Assert.AreEqual(1911, e1.GetFilePointer());
Assert.AreEqual(1911, a1.GetFilePointer());
be1 = e1.ReadByte();
ba1 = a1.ReadByte();
Assert.AreEqual(be1, ba1);
e1.Dispose();
e2.Dispose();
a1.Dispose();
a2.Dispose();
cr.Dispose();
}
