Example usage for org.apache.lucene.util.automaton RegExp toAutomaton

Introduction

In this page you can find the example usage for org.apache.lucene.util.automaton RegExp toAutomaton.

Prototype

public Automaton toAutomaton() 

Source Link

Document

Constructs new Automaton from this RegExp.

Usage

From source file:io.crate.expression.operator.RegexpMatchOperator.java

License:Apache License

@Override
public Boolean evaluate(Input<BytesRef>... args) {
    assert args.length == 2 : "invalid number of arguments";
    BytesRef source = args[0].value();//from   w w w. j  av  a2s . c o  m
    if (source == null) {
        return null;
    }
    BytesRef pattern = args[1].value();
    if (pattern == null) {
        return null;
    }
    String sPattern = pattern.utf8ToString();
    if (isPcrePattern(sPattern)) {
        return source.utf8ToString().matches(sPattern);
    } else {
        RegExp regexp = new RegExp(sPattern);
        ByteRunAutomaton regexpRunAutomaton = new ByteRunAutomaton(regexp.toAutomaton());
        return regexpRunAutomaton.run(source.bytes, source.offset, source.length);
    }
}

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From source file:io.crate.operation.operator.RegexpMatchOperator.java

License:Apache License

@Override
public Boolean evaluate(Input<BytesRef>... args) {
    assert args.length == 2 : "invalid number of arguments";
    BytesRef source = args[0].value();// ww w.  j  a va 2  s. co  m
    if (source == null) {
        return null;
    }
    BytesRef pattern = args[1].value();
    if (pattern == null) {
        return null;
    }
    if (isPcrePattern(pattern)) {
        return source.utf8ToString().matches(pattern.utf8ToString());
    } else {
        RegExp regexp = new RegExp(pattern.utf8ToString());
        ByteRunAutomaton regexpRunAutomaton = new ByteRunAutomaton(regexp.toAutomaton());
        return regexpRunAutomaton.run(source.bytes, source.offset, source.length);
    }
}

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From source file:org.apache.solr.analysis.MockTokenFilterFactory.java

License:Apache License

/** Creates a new MockTokenizerFactory */
public MockTokenFilterFactory(Map<String, String> args) {
    super(args);/*from  w  w  w.j a v a 2s. c om*/
    String stopset = get(args, "stopset", Arrays.asList("english", "empty"), null, false);
    String stopregex = get(args, "stopregex");
    if (null != stopset) {
        if (null != stopregex) {
            throw new IllegalArgumentException("Parameters stopset and stopregex cannot both be specified.");
        }
        if ("english".equalsIgnoreCase(stopset)) {
            filter = MockTokenFilter.ENGLISH_STOPSET;
        } else { // must be "empty"
            filter = MockTokenFilter.EMPTY_STOPSET;
        }
    } else if (null != stopregex) {
        RegExp regex = new RegExp(stopregex);
        filter = new CharacterRunAutomaton(regex.toAutomaton());
    } else {
        throw new IllegalArgumentException(
                "Configuration Error: either the 'stopset' or the 'stopregex' parameter must be specified.");
    }
    enablePositionIncrements = getBoolean(args, "enablePositionIncrements", true);
    if (!args.isEmpty()) {
        throw new IllegalArgumentException("Unknown parameters: " + args);
    }
}

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From source file:org.apache.solr.core.MockTokenFilterFactory.java

License:Apache License

/** Creates a new MockTokenizerFactory */
public MockTokenFilterFactory(Map<String, String> args) {
    super(args);//from   w  w  w . j a va 2  s  .c  o m
    String stopset = get(args, "stopset", Arrays.asList("english", "empty"), null, false);
    String stopregex = get(args, "stopregex");
    if (null != stopset) {
        if (null != stopregex) {
            throw new IllegalArgumentException("Parameters stopset and stopregex cannot both be specified.");
        }
        if ("english".equalsIgnoreCase(stopset)) {
            filter = MockTokenFilter.ENGLISH_STOPSET;
        } else { // must be "empty"
            filter = MockTokenFilter.EMPTY_STOPSET;
        }
    } else if (null != stopregex) {
        RegExp regex = new RegExp(stopregex);
        filter = new CharacterRunAutomaton(regex.toAutomaton());
    } else {
        throw new IllegalArgumentException(
                "Configuration Error: either the 'stopset' or the 'stopregex' parameter must be specified.");
    }
    if (!args.isEmpty()) {
        throw new IllegalArgumentException("Unknown parameters: " + args);
    }
}

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