Examples of org.apache.lucene.store.Directory.createOutput()

org.apache.lucene.store.Directory.createOutput()
Creates a new, empty file in the directory with the given name. Returns a stream writing this file.

      Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).create();


      final String testText = "This is some rubbish";
      final byte[] testTextAsBytes = testText.getBytes();


      IndexOutput io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);


      io.writeByte((byte) 1);
      io.writeByte((byte) 2);
      io.writeByte((byte) 3);
      io.writeBytes(testTextAsBytes, testTextAsBytes.length);

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      final int bufferSize = 300;
      Cache cache = cacheManager.getCache();
      cache.clear();
      Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(13).create();
      byte[] manyBytes = fillBytes(bufferSize);
      IndexOutput indexOutput = dir.createOutput(filename, IOContext.DEFAULT);
      for (int i = 0; i < 10; i++) {
         indexOutput.writeBytes(manyBytes, bufferSize);
         indexOutput.flush();
      }
      indexOutput.close();

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      Cache cache = cacheManager.getCache();
      Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();
      
      String fileName = "SomeText.txt";
      IndexOutput io = dir.createOutput(fileName, IOContext.DEFAULT);
      RepeatableLongByteSequence bytesGenerator = new RepeatableLongByteSequence();
      //It writes repeatable text
      final int REPEATABLE_BUFFER_SIZE = 1501;
      for (int i = 0; i < REPEATABLE_BUFFER_SIZE; i++) {
         io.writeByte(bytesGenerator.nextByte());

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      final int BUFFER_SIZE = 64;


      Cache cache = cacheManager.getCache();
      Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();


      IndexOutput io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);


      io.writeByte((byte) 66);
      io.writeByte((byte) 69);


      io.flush();

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      ii.close();


      assert new String(new byte[] { 66, 69 }).equals(new String(buf).trim());


      String testText = "This is some rubbish again that will span more than one chunk - one hopes.  Who knows, maybe even three or four chunks.";
      io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);
      io.seek(0);
      io.writeBytes(testText.getBytes(), 0, testText.length());
      io.close();
      // now compare.
      byte[] chunk1 = (byte[]) cache.get(new ChunkCacheKey(INDEXNAME, "MyNewFile.txt", 0, BUFFER_SIZE));

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      Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).create();


      final String testText = "This is some rubbish";
      final byte[] testTextAsBytes = testText.getBytes();


      IndexOutput io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);


      io.writeByte((byte) 1);
      io.writeByte((byte) 2);
      io.writeByte((byte) 3);
      io.writeBytes(testTextAsBytes, testTextAsBytes.length);

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      final int bufferSize = 300;
      Cache cache = cacheManager.getCache();
      cache.clear();
      Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(13).create();
      byte[] manyBytes = fillBytes(bufferSize);
      IndexOutput indexOutput = dir.createOutput(filename, IOContext.DEFAULT);
      for (int i = 0; i < 10; i++) {
         indexOutput.writeBytes(manyBytes, bufferSize);
         indexOutput.flush();
      }
      indexOutput.close();

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        Directory dest = getDirectory();
        String[] files = dir.list();
        for (int i = 0; i < files.length; i++) {
            IndexInput in = dir.openInput(files[i]);
            try {
                IndexOutput out = dest.createOutput(files[i]);
                try {
                    long remaining = in.length();
                    while (remaining > 0) {
                        int num = (int) Math.min(remaining, buffer.length);
                        in.readBytes(buffer, 0, num);

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            for (int i = 0; i < files.length; i++)
            {
               IndexInput in = dir.openInput(files[i]);
               try
               {
                  IndexOutput out = dest.createOutput(files[i]);
                  try
                  {
                     long remaining = in.length();
                     while (remaining > 0)
                     {

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    long gen = SegmentInfos.getLastCommitGeneration(dir);
    assertTrue("segment generation should be > 0 but got " + gen, gen > 0);


    final String segmentsFileName = SegmentInfos.getLastCommitSegmentsFileName(dir);
    IndexInput in = dir.openInput(segmentsFileName, newIOContext(random()));
    IndexOutput out = dir.createOutput(IndexFileNames.fileNameFromGeneration(IndexFileNames.SEGMENTS, "", 1+gen), newIOContext(random()));
    out.copyBytes(in, in.length()-1);
    byte b = in.readByte();
    out.writeByte((byte) (1+b));
    out.close();
    in.close();

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