Examples of org.apache.lucene.facet.index.streaming.CategoryAttributesStream

Package org.apache.lucene.facet.index.streaming

Examples of org.apache.lucene.facet.index.streaming.CategoryAttributesStream

org.apache.lucene.facet.index.streaming.CategoryAttributesStream
An attribute stream built from an {@link Iterable} of{@link CategoryAttribute}. This stream should then be passed through several filters (see {@link CategoryParentsStream}, {@link CategoryListTokenizer} and{@link CategoryTokenizer}) until a token stream is produced that can be indexed by Lucene.
A CategoryAttributesStream object can be reused for producing more than one stream. To do that, the user should cause the underlying Iterable object to return a new set of categories, and then call {@link #reset()} to allow this stream to be used again. @lucene.experimental

    longCategory.add(new CategoryPath("one", "two", "three", "four",
        "five", "six", "seven"));


    DefaultFacetIndexingParams indexingParams = new DefaultFacetIndexingParams();
    CategoryTokenizer tokenizer = new CategoryTokenizer(
        new CategoryAttributesStream(new CategoryAttributesIterable(
            longCategory)), indexingParams);


    // count the number of tokens
    String categoryTerm = longCategory.get(0).toString(
        indexingParams.getFacetDelimChar());

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  public void testStreamDefaultParams() throws IOException {
    Directory directory = newDirectory();
    TaxonomyWriter taxonomyWriter = new DirectoryTaxonomyWriter(
        directory);
    CategoryParentsStream stream = new CategoryParentsStream(
        new CategoryAttributesStream(categoryContainer),
        taxonomyWriter, new DefaultFacetIndexingParams());


    // count the number of tokens
    int nTokens;
    for (nTokens = 0; stream.incrementToken(); nTokens++) {

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        return new NonTopLevelPathPolicy();
      }
    };
    
    CategoryParentsStream stream = new CategoryParentsStream(
        new CategoryAttributesStream(categoryContainer),
        taxonomyWriter, indexingParams);


    // count the number of tokens
    int nTokens;
    for (nTokens = 0; stream.incrementToken(); nTokens++) {

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  @Test
  public void testNoRetainableAttributes() throws IOException, FacetException {
    Directory directory = newDirectory();
    TaxonomyWriter taxonomyWriter = new DirectoryTaxonomyWriter(directory);


    new CategoryParentsStream(new CategoryAttributesStream(categoryContainer),
        taxonomyWriter, new DefaultFacetIndexingParams());


    // add DummyAttribute, but do not retain, only one expected
    categoryContainer.addCategory(initialCatgeories[0], new DummyProperty());


    CategoryParentsStream stream = new CategoryParentsStream(new CategoryAttributesStream(
        categoryContainer), taxonomyWriter,
        new DefaultFacetIndexingParams());


    int nAttributes = 0;
    while (stream.incrementToken()) {

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    Directory directory = newDirectory();
    TaxonomyWriter taxonomyWriter = new DirectoryTaxonomyWriter(
        directory);


    FacetIndexingParams indexingParams = new DefaultFacetIndexingParams();
    new CategoryParentsStream(new CategoryAttributesStream(
        categoryContainer), taxonomyWriter, indexingParams);


    // add DummyAttribute and retain it, three expected
    categoryContainer.clear();
    categoryContainer
        .addCategory(initialCatgeories[0], new DummyProperty());
    CategoryParentsStream stream = new CategoryParentsStream(
        new CategoryAttributesStream(categoryContainer),
        taxonomyWriter, new DefaultFacetIndexingParams());
    stream.addRetainableProperty(DummyProperty.class);


    MyCategoryListTokenizer tokenizer = new MyCategoryListTokenizer(stream,
        indexingParams);

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    // creates a different stream for each different field
    for (Entry<String, List<CategoryAttribute>> e : categoriesMap
        .entrySet()) {
      // create a category attributes stream for the array of facets
      CategoryAttributesStream categoryAttributesStream = new CategoryAttributesStream(
          e.getValue());


      // Set a suitable {@link TokenStream} using
      // CategoryParentsStream, followed by CategoryListTokenizer and
      // CategoryTokenizer composition (the ordering of the last two is

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Related Classes of org.apache.lucene.facet.index.streaming.CategoryAttributesStream

org.apache.lucene.facet.index.CategoryContainerTest

org.apache.lucene.facet.index.CategoryDocumentBuilder

org.apache.lucene.facet.index.streaming.CategoryAttributesStreamTest

org.apache.lucene.facet.index.streaming.CategoryParentsStreamTest

org.apache.lucene.facet.index.streaming.CategoryTokenizerTest

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