Examples of org.apache.lucene.store.IndexInput.seek()

Class org.apache.lucene.store.IndexInput

Examples of org.apache.lucene.store.IndexInput.seek()

org.apache.lucene.store.IndexInput.seek()
Sets current position in this file, where the next read will occur. @see #getFilePointer()

    return sizeInBytes;
  }
  
  LongValues getNumeric(NumericEntry entry) throws IOException {
    final IndexInput data = this.data.clone();
    data.seek(entry.offset);


    switch (entry.format) {
      case DELTA_COMPRESSED:
        final BlockPackedReader reader = new BlockPackedReader(data, entry.packedIntsVersion, entry.blockSize, entry.count, true);
        return reader;

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    return new LongBinaryDocValues() {
      @Override
      public void get(long id, BytesRef result) {
        long address = bytes.offset + id * bytes.maxLength;
        try {
          data.seek(address);
          // NOTE: we could have one buffer, but various consumers (e.g. FieldComparatorSource) 
          // assume "they" own the bytes after calling this!
          final byte[] buffer = new byte[bytes.maxLength];
          data.readBytes(buffer, 0, buffer.length);
          result.bytes = buffer;

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      public void get(long id, BytesRef result) {
        long startAddress = bytes.offset + (id == 0 ? 0 : addresses.get(id-1));
        long endAddress = bytes.offset + addresses.get(id);
        int length = (int) (endAddress - startAddress);
        try {
          data.seek(startAddress);
          // NOTE: we could have one buffer, but various consumers (e.g. FieldComparatorSource) 
          // assume "they" own the bytes after calling this!
          final byte[] buffer = new byte[length];
          data.readBytes(buffer, 0, buffer.length);
          result.bytes = buffer;

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  public SortedDocValues getSorted(FieldInfo field) throws IOException {
    final int valueCount = (int) binaries.get(field.number).count;
    final BinaryDocValues binary = getBinary(field);
    NumericEntry entry = ords.get(field.number);
    IndexInput data = this.data.clone();
    data.seek(entry.offset);
    final BlockPackedReader ordinals = new BlockPackedReader(data, entry.packedIntsVersion, entry.blockSize, entry.count, true);
    
    return new SortedDocValues() {


      @Override

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    out.close();
    final IndexInput in = dir.openInput("out.bin", IOContext.DEFAULT);
    final BlockPackedReaderIterator it = new BlockPackedReaderIterator(in, PackedInts.VERSION_CURRENT, blockSize, valueCount);
    it.skip(valueOffset);
    assertEquals(value, it.next());
    in.seek(0L);
    final BlockPackedReader reader = new BlockPackedReader(in, PackedInts.VERSION_CURRENT, blockSize, valueCount, random().nextBoolean());
    assertEquals(value, reader.get(valueOffset));
    for (int i = 0; i < 5; ++i) {
      final long offset = _TestUtil.nextLong(random(), 0, valueCount - 1);
      if (offset == valueOffset) {

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      return new Bits() {


        @Override
        public boolean get(int index) {
          try {
            in.seek(offset + (index >> 3));
            return (in.readByte() & (1 << (index & 7))) != 0;
          } catch (IOException e) {
            throw new RuntimeException(e);
          }
        }

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        return null;
      else {
        if (fieldsData == null) {
          IndexInput localFieldsStream = getFieldStream();
          try {
            localFieldsStream.seek(pointer);
            if (isCompressed) {
              final byte[] b = new byte[toRead];
              localFieldsStream.readBytes(b, 0, b.length);
              fieldsData = new String(uncompress(b), "UTF-8");
            } else {

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          IndexInput localFieldsStream = getFieldStream();


          // Throw this IOException since IndexReader.document does so anyway, so probably not that big of a change for people
          // since they are already handling this exception when getting the document
          try {
            localFieldsStream.seek(pointer);
            localFieldsStream.readBytes(b, 0, toRead);
            if (isCompressed == true) {
              fieldsData = uncompress(b);
            } else {
              fieldsData = b;

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      public void lookupOrd(long ord, BytesRef result) {
        try {
          if (ord < 0 || ord >= field.numValues) {
            throw new IndexOutOfBoundsException("ord must be 0 .. " + (field.numValues-1) + "; got " + ord);
          }
          in.seek(field.dataStartFilePointer + ord * (9 + field.pattern.length() + field.maxLength));
          SimpleTextUtil.readLine(in, scratch);
          assert StringHelper.startsWith(scratch, LENGTH): "got " + scratch.utf8ToString() + " in=" + in;
          int len;
          try {
            len = decoder.parse(new String(scratch.bytes, scratch.offset + LENGTH.length, scratch.length - LENGTH.length, "UTF-8")).intValue();

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      final PairOutputs<Long,Long> outputsInner = new PairOutputs<Long,Long>(posIntOutputs, posIntOutputs);
      final PairOutputs<Long,PairOutputs.Pair<Long,Long>> outputs = new PairOutputs<Long,PairOutputs.Pair<Long,Long>>(posIntOutputs,
                                                                                                                      outputsInner);
      b = new Builder<PairOutputs.Pair<Long,PairOutputs.Pair<Long,Long>>>(FST.INPUT_TYPE.BYTE1, outputs);
      IndexInput in = SimpleTextFieldsReader.this.in.clone();
      in.seek(termsStart);
      final BytesRef lastTerm = new BytesRef(10);
      long lastDocsStart = -1;
      int docFreq = 0;
      long totalTermFreq = 0;
      OpenBitSet visitedDocs = new OpenBitSet();

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