Example usage for org.apache.lucene.util.automaton AutomatonTestUtil randomRegexp

Introduction

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

Prototype

public static String randomRegexp(Random r) 

Source Link

Document

Returns random string, including full unicode range.

Usage

From source file:com.rocana.lucene.codec.v1.TestBlockPostingsFormat3.java

License:Apache License

public void assertTerms(Terms leftTerms, Terms rightTerms, boolean deep) throws Exception {
    if (leftTerms == null || rightTerms == null) {
        assertNull(leftTerms);//w  w w . j av a  2s .  c  om
        assertNull(rightTerms);
        return;
    }
    assertTermsStatistics(leftTerms, rightTerms);

    // NOTE: we don't assert hasOffsets/hasPositions/hasPayloads because they are allowed to be different

    boolean bothHavePositions = leftTerms.hasPositions() && rightTerms.hasPositions();
    TermsEnum leftTermsEnum = leftTerms.iterator();
    TermsEnum rightTermsEnum = rightTerms.iterator();
    assertTermsEnum(leftTermsEnum, rightTermsEnum, true, bothHavePositions);

    assertTermsSeeking(leftTerms, rightTerms);

    if (deep) {
        int numIntersections = atLeast(3);
        for (int i = 0; i < numIntersections; i++) {
            String re = AutomatonTestUtil.randomRegexp(random());
            CompiledAutomaton automaton = new CompiledAutomaton(new RegExp(re, RegExp.NONE).toAutomaton());
            if (automaton.type == CompiledAutomaton.AUTOMATON_TYPE.NORMAL) {
                // TODO: test start term too
                TermsEnum leftIntersection = leftTerms.intersect(automaton, null);
                TermsEnum rightIntersection = rightTerms.intersect(automaton, null);
                assertTermsEnum(leftIntersection, rightIntersection, rarely(), bothHavePositions);
            }
        }
    }
}

---