org.apache.lucene.index.IndexOptions#DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS源码实例Demo

private static FieldInfo getMockFieldInfo(String fieldName, int number) {
  return new FieldInfo(fieldName,
      number,
      false,
      false,
      true,
      IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS,
      DocValuesType.NONE,
      -1,
      Collections.emptyMap(),
      0,
      0,
      0,
      true
  );
}
 

private static FieldInfo mockFieldInfo(String fieldName, int number) {
  return new FieldInfo(fieldName,
      number,
      false,
      false,
      true,
      IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS,
      DocValuesType.NONE,
      -1,
      Collections.emptyMap(),
      0,
      0,
      0,
      false
  );
}
 

private static IndexOptions getIndexOptions(IndexInput input, byte b) throws IOException {
  switch (b) {
  case 0:
    return IndexOptions.NONE;
  case 1:
    return IndexOptions.DOCS;
  case 2:
    return IndexOptions.DOCS_AND_FREQS;
  case 3:
    return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
  case 4:
    return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
  default:
    // BUG
    throw new CorruptIndexException("invalid IndexOptions byte: " + b, input);
  }
}
 

private static IndexOptions getIndexOptions(IndexInput input, byte b) throws IOException {
  switch (b) {
  case 0:
    return IndexOptions.NONE;
  case 1:
    return IndexOptions.DOCS;
  case 2:
    return IndexOptions.DOCS_AND_FREQS;
  case 3:
    return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
  case 4:
    return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
  default:
    // BUG
    throw new CorruptIndexException("invalid IndexOptions byte: " + b, input);
  }
}
 

@Override
public IndexOptions indexOptions() {
  if (!indexed()) {
    return IndexOptions.NONE;
  }
  
  IndexOptions options = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
  if (omitTermFreqAndPositions()) {
    options = IndexOptions.DOCS;
  } else if (omitPositions()) {
    options = IndexOptions.DOCS_AND_FREQS;
  } else if (storeOffsetsWithPositions()) {
    options = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
  }

  return options;
}
 

/**
 * Utility method to create a {@link org.apache.lucene.document.FieldType}
 * based on the {@link SchemaField}
 */
public static org.apache.lucene.document.FieldType createFieldType(SchemaField field) {
  if (!field.indexed() && !field.stored()) {
    log.trace("Ignoring unindexed/unstored field: {}", field);
    return null;
  }
  org.apache.lucene.document.FieldType newType = new org.apache.lucene.document.FieldType();
  newType.setTokenized(field.isTokenized());
  newType.setStored(field.stored());
  newType.setOmitNorms(field.omitNorms());
  IndexOptions options = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
  if (field.omitTermFreqAndPositions()) {
    options = IndexOptions.DOCS;
  } else if (field.omitPositions()) {
    options = IndexOptions.DOCS_AND_FREQS;
  } else if (field.storeOffsetsWithPositions()) {
    options = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
  }
  newType.setIndexOptions(options);
  newType.setStoreTermVectors(field.storeTermVector());
  newType.setStoreTermVectorOffsets(field.storeTermOffsets());
  newType.setStoreTermVectorPositions(field.storeTermPositions());
  newType.setStoreTermVectorPayloads(field.storeTermPayloads());
  return newType;
}
 

private static IndexOptions nodeIndexOptionValue(final Object propNode) {
    final String value = propNode.toString();
    if (INDEX_OPTIONS_OFFSETS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
    } else if (INDEX_OPTIONS_POSITIONS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
    } else if (INDEX_OPTIONS_FREQS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS_AND_FREQS;
    } else if (INDEX_OPTIONS_DOCS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS;
    } else {
        throw new ElasticsearchParseException("failed to parse index option [{}]", value);
    }
}
 

public TermVectorLeafReader(String field, Terms terms) {
  fields = new Fields() {
    @Override
    public Iterator<String> iterator() {
      return Collections.singletonList(field).iterator();
    }

    @Override
    public Terms terms(String fld) throws IOException {
      if (!field.equals(fld)) {
        return null;
      }
      return terms;
    }

    @Override
    public int size() {
      return 1;
    }
  };

  IndexOptions indexOptions;
  if (!terms.hasFreqs()) {
    indexOptions = IndexOptions.DOCS;
  } else if (!terms.hasPositions()) {
    indexOptions = IndexOptions.DOCS_AND_FREQS;
  } else if (!terms.hasOffsets()) {
    indexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
  } else {
    indexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
  }
  FieldInfo fieldInfo = new FieldInfo(field, 0,
                                      true, true, terms.hasPayloads(),
                                      indexOptions, DocValuesType.NONE, -1, Collections.emptyMap(), 0, 0, 0, false);
  fieldInfos = new FieldInfos(new FieldInfo[]{fieldInfo});
}
 

private Field newField(String name, String value, Store stored) {
    FieldType tagsFieldType = new FieldType();
    tagsFieldType.setStored(stored == Store.YES);
    IndexOptions idxOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
    tagsFieldType.setIndexOptions(idxOptions);
    return new Field(name, value, tagsFieldType);
}
 

Field newFieldAllOn(String name, String value) {
	FieldType tagsFieldType = new FieldType();
	tagsFieldType.setStored(true);
	IndexOptions opts = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
	tagsFieldType.setIndexOptions(opts);
	tagsFieldType.setOmitNorms(true);
	tagsFieldType.setStoreTermVectors(true);
	tagsFieldType.setStoreTermVectorPositions(true);
	tagsFieldType.setStoreTermVectorPayloads(true);
	return new Field(name, value, tagsFieldType);
}
 

Field newField(String name, String value, Store stored) {
	FieldType tagsFieldType = new FieldType();
	tagsFieldType.setStored(stored == Store.YES);
	IndexOptions opts = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
	tagsFieldType.setIndexOptions(opts);
	return new Field(name, value, tagsFieldType);
}
 

Field newField(String name, String value, Store stored) {
	FieldType tagsFieldType = new FieldType();
	tagsFieldType.setStored(stored == Store.YES);
	IndexOptions opts = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
	tagsFieldType.setIndexOptions(opts);
	return new Field(name, value, tagsFieldType);
}
 

Field newField(String name, String value, Store stored) {
	FieldType tagsFieldType = new FieldType();
	tagsFieldType.setStored(stored == Store.YES);
	IndexOptions opts = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
	tagsFieldType.setIndexOptions(opts);
	return new Field(name, value, tagsFieldType);
}
 

PhraseFieldType(TextFieldType parent) {
    setTokenized(true);
    setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);
    if (parent.indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS) {
        setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS);
    }
    if (parent.storeTermVectorOffsets()) {
        setStoreTermVectors(true);
        setStoreTermVectorPositions(true);
        setStoreTermVectorOffsets(true);
    }
    setAnalyzer(parent.indexAnalyzer().name(), parent.indexAnalyzer().analyzer());
    setName(parent.name() + FAST_PHRASE_SUFFIX);
    this.parent = parent;
}
 

private static IndexOptions nodeIndexOptionValue(final Object propNode) {
    final String value = propNode.toString();
    if (INDEX_OPTIONS_OFFSETS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
    } else if (INDEX_OPTIONS_POSITIONS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
    } else if (INDEX_OPTIONS_FREQS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS_AND_FREQS;
    } else if (INDEX_OPTIONS_DOCS.equalsIgnoreCase(value)) {
        return IndexOptions.DOCS;
    } else {
        throw new ElasticsearchParseException("failed to parse index option [{}]", value);
    }
}
 

@Override
public boolean canHighlight(FieldMapper fieldMapper) {
    return fieldMapper.fieldType().indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
}
 

@Override
public TextFieldMapper build(BuilderContext context) {
    if (positionIncrementGap != POSITION_INCREMENT_GAP_USE_ANALYZER) {
        if (fieldType.indexOptions().compareTo(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) < 0) {
            throw new IllegalArgumentException("Cannot set position_increment_gap on field ["
                + name + "] without positions enabled");
        }
        fieldType.setIndexAnalyzer(new NamedAnalyzer(fieldType.indexAnalyzer(), positionIncrementGap));
        fieldType.setSearchAnalyzer(new NamedAnalyzer(fieldType.searchAnalyzer(), positionIncrementGap));
        fieldType.setSearchQuoteAnalyzer(new NamedAnalyzer(fieldType.searchQuoteAnalyzer(), positionIncrementGap));
    }
    setupFieldType(context);
    PrefixFieldMapper prefixMapper = null;
    if (prefixFieldType != null) {
        if (fieldType().isSearchable() == false) {
            throw new IllegalArgumentException("Cannot set index_prefixes on unindexed field [" + name() + "]");
        }
        // Copy the index options of the main field to allow phrase queries on
        // the prefix field.
        if (context.indexCreatedVersion().onOrAfter(Version.ES_V_6_5_1)) {
            if (fieldType.indexOptions() == IndexOptions.DOCS_AND_FREQS) {
                // frequencies are not needed because prefix queries always use a constant score
                prefixFieldType.setIndexOptions(IndexOptions.DOCS);
            } else {
                prefixFieldType.setIndexOptions(fieldType.indexOptions());
            }
        } else if (fieldType.indexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS) {
            prefixFieldType.setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS);
        }
        if (fieldType.storeTermVectorOffsets()) {
            prefixFieldType.setStoreTermVectorOffsets(true);
        }
        prefixFieldType.setAnalyzer(fieldType.indexAnalyzer());
        prefixMapper = new PrefixFieldMapper(prefixFieldType, context.indexSettings());
    }
    if (fieldType().indexPhrases) {
        if (fieldType().isSearchable() == false) {
            throw new IllegalArgumentException("Cannot set index_phrases on unindexed field [" + name() + "]");
        }
        if (fieldType.indexOptions().compareTo(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) < 0) {
            throw new IllegalArgumentException("Cannot set index_phrases on field [" + name() + "] if positions are not enabled");
        }
    }
    return new TextFieldMapper(
        name,
        position,
        defaultExpression,
        fieldType(),
        defaultFieldType,
        positionIncrementGap,
        prefixMapper,
        context.indexSettings(),
        multiFieldsBuilder.build(this, context),
        copyTo
    );
}
 

/**
 * Determine the offset source for the specified field.  The default algorithm is as follows:
 * <ol>
 * <li>This calls {@link #getFieldInfo(String)}. Note this returns null if there is no searcher or if the
 * field isn't found there.</li>
 * <li> If there's a field info it has
 * {@link IndexOptions#DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS} then {@link OffsetSource#POSTINGS} is
 * returned.</li>
 * <li>If there's a field info and {@link FieldInfo#hasVectors()} then {@link OffsetSource#TERM_VECTORS} is
 * returned (note we can't check here if the TV has offsets; if there isn't then an exception will get thrown
 * down the line).</li>
 * <li>Fall-back: {@link OffsetSource#ANALYSIS} is returned.</li>
 * </ol>
 * <p>
 * Note that the highlighter sometimes switches to something else based on the query, such as if you have
 * {@link OffsetSource#POSTINGS_WITH_TERM_VECTORS} but in fact don't need term vectors.
 */
protected OffsetSource getOffsetSource(String field) {
  FieldInfo fieldInfo = getFieldInfo(field);
  if (fieldInfo != null) {
    if (fieldInfo.getIndexOptions() == IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS) {
      return fieldInfo.hasVectors() ? OffsetSource.POSTINGS_WITH_TERM_VECTORS : OffsetSource.POSTINGS;
    }
    if (fieldInfo.hasVectors()) { // unfortunately we can't also check if the TV has offsets
      return OffsetSource.TERM_VECTORS;
    }
  }
  return OffsetSource.ANALYSIS;
}