Examples of org.apache.lucene.index.Payload

org.apache.lucene.index.Payload
A Payload is metadata that can be stored together with each occurrence of a term. This metadata is stored inline in the posting list of the specific term.
To store payloads in the index a {@link TokenStream} has to be used thatproduces payload data.
Use {@link TermPositions#getPayloadLength()} and {@link TermPositions#getPayload(byte[],int)}to retrieve the payloads from the index.

            return false;
        }
        if (allEntries.current() != null) {
            float boost = allEntries.current().boost();
            if (boost != 1.0f) {
                payloadAttribute.setPayload(new Payload(encodeFloat(boost)));
            } else {
                payloadAttribute.setPayload(null);
            }
        }
        return true;

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    }






    public Payload asPayload() {
        return new Payload(bPayload);
    }

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      encoder.reInit(ubaos);
      for (int val : values) {
        encoder.encode(val);
      }
      encoder.close();
      payload.setPayload(new Payload(buf, 0, ubaos.length()));


      exhausted = true;
      return true;
    }

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  }


  @Override
  public boolean incrementToken() throws IOException {
    if (input.incrementToken()) {
      payloadAttr.setPayload(new Payload(("pos: " + pos).getBytes()));
      int posIncr;
      if (i % 2 == 1) {
        posIncr = 1;
      } else {
        posIncr = 0;

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    @Override
    public boolean incrementToken() throws IOException {
      
      if (input.incrementToken()) {
        if (fieldName.equals(FIELD)) {
          payloadAtt.setPayload(new Payload(payloadField));
        } else if (fieldName.equals(MULTI_FIELD)) {
          if (numSeen  % 2 == 0) {
            payloadAtt.setPayload(new Payload(payloadMultiField1));
          }
          else {
            payloadAtt.setPayload(new Payload(payloadMultiField2));
          }
          numSeen++;
        }
        return true;
      }

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      if (nextToken == null) {
        prefixExhausted = true;
      } else {
        previousPrefixToken.reinit(nextToken);
        // Make it a deep copy
        Payload p = previousPrefixToken.getPayload();
        if (p != null) {
          previousPrefixToken.setPayload((Payload) p.clone());
        }
        setCurrentToken(nextToken);
        return true;
      }
    }

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    @Override
    public boolean incrementToken() throws IOException {
      boolean hasNext = input.incrementToken();
      if (hasNext) {
        if (fieldName.equals("field")) {
          payloadAtt.setPayload(new Payload(payloadField));
        } else if (fieldName.equals("multiField")) {
          if (numSeen % 2 == 0) {
            payloadAtt.setPayload(new Payload(payloadMultiField1));
          } else {
            payloadAtt.setPayload(new Payload(payloadMultiField2));
          }
          numSeen++;
        }
        return true;
      } else {

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    CharTermAttribute termAtt = stream.getAttribute(CharTermAttribute.class);
    PayloadAttribute payloadAtt = stream.getAttribute(PayloadAttribute.class);
    stream.reset();
    assertTrue(stream.incrementToken());
    assertEquals(expected, termAtt.toString());
    Payload payload = payloadAtt.getPayload();
    if (payload != null) {
      assertTrue(payload.length() + " does not equal: " + expectPay.length, payload.length() == expectPay.length);
      for (int i = 0; i < expectPay.length; i++) {
        assertTrue(expectPay[i] + " does not equal: " + payload.byteAt(i), expectPay[i] == payload.byteAt(i));


      }
    } else {
      assertTrue("expectPay is not null and it should be", expectPay == null);
    }

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  void assertTermEquals(String expected, TokenStream stream, CharTermAttribute termAtt, PayloadAttribute payAtt, byte[] expectPay) throws Exception {
    stream.reset();
    assertTrue(stream.incrementToken());
    assertEquals(expected, termAtt.toString());
    Payload payload = payAtt.getPayload();
    if (payload != null) {
      assertTrue(payload.length() + " does not equal: " + expectPay.length, payload.length() == expectPay.length);
      for (int i = 0; i < expectPay.length; i++) {
        assertTrue(expectPay[i] + " does not equal: " + payload.byteAt(i), expectPay[i] == payload.byteAt(i));


      }
    } else {
      assertTrue("expectPay is not null and it should be", expectPay == null);
    }

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    int count = 0;
    PayloadAttribute payloadAtt = nptf.getAttribute(PayloadAttribute.class);
    OffsetAttribute offsetAtt = nptf.getAttribute(OffsetAttribute.class);
    nptf.reset();
    while (nptf.incrementToken()) {
      Payload pay = payloadAtt.getPayload();
      assertTrue("pay is null and it shouldn't be", pay != null);
      byte [] data = pay.getData();
      int start = PayloadHelper.decodeInt(data, 0);
      assertTrue(start + " does not equal: " + offsetAtt.startOffset(), start == offsetAtt.startOffset());
      int end = PayloadHelper.decodeInt(data, 4);
      assertTrue(end + " does not equal: " + offsetAtt.endOffset(), end == offsetAtt.endOffset());
      count++;

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