Example usage for org.apache.lucene.util IntsRef IntsRef

Introduction

In this page you can find the example usage for org.apache.lucene.util IntsRef IntsRef.

Prototype

public IntsRef(int capacity) 

Source Link

Document

Create a IntsRef pointing to a new array of size capacity.

Usage

From source file:com.sindicetech.siren.index.codecs.block.TestAForCodec.java

License:Open Source License

@Test
public void testIncompleteFrame() throws IOException {
    final BlockCompressor compressor = new AForBlockCompressor();

    final IntsRef input = new IntsRef(64);
    final BytesRef output = new BytesRef(compressor.maxCompressedSize(64));

    // fill first part with 1
    for (int i = 0; i < 33; i++) {
        input.ints[i] = 1;/*from  w w  w .  ja  v a  2s.  c  o  m*/
    }

    // fill the rest with random numbers
    for (int i = 33; i < 64; i++) {
        input.ints[i] = (int) this.nextLong(64, Short.MAX_VALUE);
    }

    input.offset = 0;
    input.length = 33;

    // the random numbers after the end of the input array should not impact
    // compression
    compressor.compress(input, output);

    // should be frame code 1 : 32 ints encoded with 1 bits
    assertEquals(1, output.bytes[0]);
    // followed by 4 bytes at 255
    assertEquals(0xFF, output.bytes[1] & 0xFF);
    assertEquals(0xFF, output.bytes[2] & 0xFF);
    assertEquals(0xFF, output.bytes[3] & 0xFF);
    assertEquals(0xFF, output.bytes[4] & 0xFF);
    // then frame code 34 : 16 ints encoded with 1 bits
    assertEquals(34, output.bytes[5]);
    // followed by 1 byte with at least 128 and a second byte with 0
    assertEquals(128, output.bytes[6] & 0x80);
    assertEquals(0, output.bytes[7] & 0xFF);
    // followed by frame code 33: 16 ints encoded with 0 bits
    assertEquals(33, output.bytes[8]);
}

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From source file:com.sindicetech.siren.index.codecs.CodecTestCase.java

License:Open Source License

private void doTest(final int[] values, final int blockSize, final BlockCompressor compressor,
        final BlockDecompressor decompressor) throws Exception {
    final BytesRef compressedData = new BytesRef(compressor.maxCompressedSize(blockSize));
    final IntsRef input = new IntsRef(blockSize);
    final IntsRef output = new IntsRef(blockSize);

    for (int i = 0; i < values.length; i += blockSize) {

        int offset = 0;

        // copy first block into the uncompressed data buffer
        for (int j = i; offset < blockSize && j < values.length; j++, offset++) {
            input.ints[offset] = values[j];
        }//w w  w  .  j  a v a  2  s.  co  m
        input.offset = 0;
        input.length = offset;

        // compress
        compressor.compress(input, compressedData);

        // decompress
        decompressor.decompress(compressedData, output);

        // check if they are equals
        for (int j = 0; j < input.length; j++) {
            assertEquals(input.ints[j], output.ints[j]);
        }
    }
}

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From source file:elhuyar.bilakit.Dictionary.java

License:Apache License

private FST<IntsRef> affixFST(TreeMap<String, List<Integer>> affixes) throws IOException {
      IntSequenceOutputs outputs = IntSequenceOutputs.getSingleton();
      Builder<IntsRef> builder = new Builder<>(FST.INPUT_TYPE.BYTE4, outputs);
      IntsRefBuilder scratch = new IntsRefBuilder();
      for (Map.Entry<String, List<Integer>> entry : affixes.entrySet()) {
          Util.toUTF32(entry.getKey(), scratch);
          List<Integer> entries = entry.getValue();
          IntsRef output = new IntsRef(entries.size());
          for (Integer c : entries) {
              output.ints[output.length++] = c;
          }/*w w  w  .  java  2s. c  o  m*/
          builder.add(scratch.get(), output);
      }
      return builder.finish();
  }

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From source file:org.opensextant.solrtexttagger.TermPrefixCursor.java

License:Open Source License

/** Returns an IntsRef either cached or reading postingsEnum. Not null.
 * @param postingsEnum*/// w w w.j  a  v  a2 s  . co  m
private IntsRef postingsEnumToIntsRef(PostingsEnum postingsEnum, Bits liveDocs) throws IOException {
    // (The cache can have empty IntsRefs)

    //lookup prefixBuf in a cache
    if (docIdsCache != null) {
        docIds = docIdsCache.get(prefixBuf);
        if (docIds != null) {
            return docIds;
        }
    }

    //read postingsEnum
    docIds = new IntsRef(termsEnum.docFreq());
    int docId;
    while ((docId = postingsEnum.nextDoc()) != PostingsEnum.NO_MORE_DOCS) {
        if (liveDocs != null && !liveDocs.get(postingsEnum.docID())) {
            continue;
        }
        docIds.ints[docIds.length++] = docId;
    }
    if (docIds.length == 0)
        docIds = EMPTY_INTSREF;

    //cache
    if (docIdsCache != null) {
        ensureBufIsACopy();
        //clone is shallow; that's okay as the prefix isn't overwritten; it's just appended to
        docIdsCache.put(prefixBuf.clone(), docIds);
    }
    return docIds;
}

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