Examples of TokenFilter

edu.ucla.sspace.text.TokenFilter
A utility for asserting what tokens are valid and invalid within a stream of tokens. A filter may be either inclusive or exclusive.
An inclusive filter will accept only those tokens with which it was initialized. For an example, an inclusive filter initialized with all of the words in the english dictionary would exclude all misspellings or foreign words in a token stream.
An exclusive filter will aceept only those tokens that are not in set with which it was initialized. An exclusive filter is often used with a list of common words that should be excluded, which is also known as a "stop list."
{@code TokenFilter} instances may be combined into a linear chain of filters.This allows for a highly configurable filter to be made from mulitple rules. Chained filters are created in a linear order and each filter must accept the token for the last filter to return {@code}. If the any of the earlier filters return {@code false}, then the token is not accepted.
This class also provides a static utility function {@link #loadFromSpecification(String) loadFromSpecification} for initializing achain of filters from a text configuration. This is intended to facility command-line tools that want to provide easily configurable filters. An example configuration might look like: include=top-tokens.txt:test-words.txt,exclude=stop-words.txt @see FilteredIterator
org.apache.lucene.analysis.TokenFilter
A TokenFilter is a TokenStream whose input is another token stream.
This is an abstract class. NOTE: subclasses must override {@link #incrementToken()} if the new TokenStream API is usedand {@link #next(Token)} or {@link #next()} if the oldTokenStream API is used.
See {@link TokenStream}
org.apache.tools.ant.filters.TokenFilter
This splits up input into tokens and passes the tokens to a sequence of filters. @author Peter Reilly @since Ant 1.6 @see BaseFilterReader @see ChainableReader @see DynamicConfigurator
org.apache.uima.conceptMapper.support.tokens.TokenFilter

Examples of org.apache.lucene.analysis.TokenFilter

  public void testInvalidOffsets() throws Exception {
    Analyzer analyzer = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
        TokenFilter filters = new ASCIIFoldingFilter(tokenizer);
        filters = new NGramTokenFilter(TEST_VERSION_CURRENT, filters, 2, 2);
        return new TokenStreamComponents(tokenizer, filters);
      }
    };
    assertAnalyzesTo(analyzer, "mosfellsbær",

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Examples of org.apache.lucene.analysis.TokenFilter

  public void testExceptionFromTokenStream() throws IOException {
    RAMDirectory dir = new MockRAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new Analyzer() {


      public TokenStream tokenStream(String fieldName, Reader reader) {
        return new TokenFilter(new StandardTokenizer(reader)) {
          private int count = 0;


          public boolean incrementToken() throws IOException {
            if (count++ == 5) {
              throw new IOException();

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Examples of org.apache.lucene.analysis.TokenFilter

  public void testInvalidOffsets() throws Exception {
    Analyzer analyzer = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
        TokenFilter filters = new ASCIIFoldingFilter(tokenizer);
        filters = new EdgeNGramTokenFilter(Version.LUCENE_43, filters, EdgeNGramTokenFilter.Side.FRONT, 2, 15);
        return new TokenStreamComponents(tokenizer, filters);
      }
    };
    assertAnalyzesTo(analyzer, "mosfellsbær",

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Examples of org.apache.lucene.analysis.TokenFilter

    final PositionIncrementAttribute posIncrAtt = t.getAttribute(PositionIncrementAttribute.class);


    t.setReader(new StringReader(uri));
    t.reset();


    final TokenFilter filter = new MailtoFilter(t);
    for (int i = 0; i < expectedStems.length; i++) {
        assertTrue("token " + i + " exists", filter.incrementToken());
        assertEquals(expectedStems[i], termAtt.toString());
        if (expectedTypes == null)
          assertEquals(uritype, typeAtt.type());
        else
          assertEquals(expectedTypes[i], typeAtt.type());
        if (expectedPosIncr != null)
          assertEquals(expectedPosIncr[i], posIncrAtt.getPositionIncrement());
    }
    filter.end();
    filter.close();
  }

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Examples of org.apache.lucene.analysis.TokenFilter


      @Override
      public TokenStream tokenStream(String fieldName, Reader reader) {
        MockTokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.SIMPLE, true);
        tokenizer.setEnableChecks(false); // disable workflow checking as we forcefully close() in exceptional cases.
        return new TokenFilter(tokenizer) {
          private int count = 0;


          @Override
          public boolean incrementToken() throws IOException {
            if (count++ == 5) {

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Examples of org.apache.lucene.analysis.TokenFilter

  }


  public void testTokenReuse() throws IOException {
    Analyzer analyzer = new Analyzer() {
      public TokenStream tokenStream(String fieldName, Reader reader) {
        return new TokenFilter(new WhitespaceTokenizer(reader)) {
          boolean first=true;
          AttributeSource.State state;


          public boolean incrementToken() throws IOException {
            if (state != null) {

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Examples of org.apache.lucene.analysis.TokenFilter

  public void testExceptionFromTokenStream() throws IOException {
    RAMDirectory dir = new MockRAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new Analyzer() {


      public TokenStream tokenStream(String fieldName, Reader reader) {
        return new TokenFilter(new StandardTokenizer(reader)) {
          private int count = 0;


          public boolean incrementToken() throws IOException {
            if (count++ == 5) {
              throw new IOException();

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Examples of org.apache.lucene.analysis.TokenFilter

    expect(mapFileReaderFactory.createMapFileReader(TEST_FILE_1)).andReturn(mapFileReader);
    expect(mapFileReader.readMap()).andReturn(mapping);
    replay(mapFileReaderFactory);
    replay(mapFileReader);
    
    TokenFilter tokenFilter = replaceFilterFactory.createTokenFilter(tokenStream, properties);
    assertEquals(ReplaceFilter.class, tokenFilter.getClass());
    ReplaceFilter replaceFilter = (ReplaceFilter) tokenFilter;
    assertEquals(mapping, replaceFilter.getMapping());
    verify(mapFileReaderFactory);
    verify(mapFileReader);

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Examples of org.apache.lucene.analysis.TokenFilter

  public void testExceptionFromTokenStream() throws IOException {
    RAMDirectory dir = new MockRAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new Analyzer() {


      public TokenStream tokenStream(String fieldName, Reader reader) {
        return new TokenFilter(new StandardTokenizer(reader)) {
          private int count = 0;


          public Token next() throws IOException {
            if (count++ == 5) {
              throw new IOException();

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Examples of org.apache.lucene.analysis.TokenFilter


      @Override
      public TokenStreamComponents createComponents(String fieldName, Reader reader) {
        MockTokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.SIMPLE, true);
        tokenizer.setEnableChecks(false); // disable workflow checking as we forcefully close() in exceptional cases.
        return new TokenStreamComponents(tokenizer, new TokenFilter(tokenizer) {
          private int count = 0;


          @Override
          public boolean incrementToken() throws IOException {
            if (count++ == 5) {

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