Example usage for org.apache.lucene.util.automaton Automata makeEmpty

Introduction

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

Prototype

public static Automaton makeEmpty()

Source Link

Document

Returns a new (deterministic) automaton with the empty language.

Usage

From source file:org.codelibs.elasticsearch.common.xcontent.support.XContentMapValues.java

License:Apache License

/**
 * Returns a function that filters a document map based on the given include and exclude rules.
 * @see #filter(Map, String[], String[]) for details
 *///from ww w.  j a  v  a  2  s.co  m
public static Function<Map<String, ?>, Map<String, Object>> filter(String[] includes, String[] excludes) {
    CharacterRunAutomaton matchAllAutomaton = new CharacterRunAutomaton(Automata.makeAnyString());

    CharacterRunAutomaton include;
    if (includes == null || includes.length == 0) {
        include = matchAllAutomaton;
    } else {
        Automaton includeA = Regex.simpleMatchToAutomaton(includes);
        includeA = makeMatchDotsInFieldNames(includeA);
        include = new CharacterRunAutomaton(includeA);
    }

    Automaton excludeA;
    if (excludes == null || excludes.length == 0) {
        excludeA = Automata.makeEmpty();
    } else {
        excludeA = Regex.simpleMatchToAutomaton(excludes);
        excludeA = makeMatchDotsInFieldNames(excludeA);
    }
    CharacterRunAutomaton exclude = new CharacterRunAutomaton(excludeA);

    // NOTE: We cannot use Operations.minus because of the special case that
    // we want all sub properties to match as soon as an object matches

    return (map) -> filter(map, include, 0, exclude, 0, matchAllAutomaton);
}

From source file:org.elasticsearch.index.reindex.TransportReindexAction.java

License:Apache License

/**
 * Build the {@link CharacterRunAutomaton} that represents the reindex-from-remote whitelist and make sure that it doesn't whitelist
 * the world.//ww w. j  a va  2  s .com
 */
static CharacterRunAutomaton buildRemoteWhitelist(List<String> whitelist) {
    if (whitelist.isEmpty()) {
        return new CharacterRunAutomaton(Automata.makeEmpty());
    }
    Automaton automaton = Regex.simpleMatchToAutomaton(whitelist.toArray(Strings.EMPTY_ARRAY));
    automaton = MinimizationOperations.minimize(automaton, Operations.DEFAULT_MAX_DETERMINIZED_STATES);
    if (Operations.isTotal(automaton)) {
        throw new IllegalArgumentException("Refusing to start because whitelist " + whitelist
                + " accepts all addresses. "
                + "This would allow users to reindex-from-remote any URL they like effectively having Elasticsearch make HTTP GETs "
                + "for them.");
    }
    return new CharacterRunAutomaton(automaton);
}

From source file:org.elasticsearch.xpack.security.authz.accesscontrol.FieldDataCacheWithFieldSubsetReaderTests.java

License:Open Source License

public void testSortedSetDVOrdinalsIndexFieldData_global() throws Exception {
    assertThat(indexFieldDataCache.topLevelBuilds, equalTo(0));
    IndexOrdinalsFieldData global = sortedSetDVOrdinalsIndexFieldData.loadGlobal(ir);
    AtomicOrdinalsFieldData atomic = global.load(ir.leaves().get(0));
    assertThat(atomic.getOrdinalsValues().getValueCount(), equalTo(numDocs));
    assertThat(indexFieldDataCache.topLevelBuilds, equalTo(1));

    DirectoryReader ir = FieldSubsetReader.wrap(this.ir, new CharacterRunAutomaton(Automata.makeEmpty()));
    global = sortedSetDVOrdinalsIndexFieldData.loadGlobal(ir);
    atomic = global.load(ir.leaves().get(0));
    assertThat(atomic.getOrdinalsValues().getValueCount(), equalTo(0L));
    assertThat(indexFieldDataCache.topLevelBuilds, equalTo(1));
}

From source file:org.elasticsearch.xpack.security.authz.accesscontrol.FieldDataCacheWithFieldSubsetReaderTests.java

License:Open Source License

public void testSortedSetDVOrdinalsIndexFieldData_segment() throws Exception {
    for (LeafReaderContext context : ir.leaves()) {
        AtomicOrdinalsFieldData atomic = sortedSetDVOrdinalsIndexFieldData.load(context);
        assertThat(atomic.getOrdinalsValues().getValueCount(), greaterThanOrEqualTo(1L));
    }/*from  w  w w .  j a  v a 2 s  .  c om*/

    DirectoryReader ir = FieldSubsetReader.wrap(this.ir, new CharacterRunAutomaton(Automata.makeEmpty()));
    for (LeafReaderContext context : ir.leaves()) {
        AtomicOrdinalsFieldData atomic = sortedSetDVOrdinalsIndexFieldData.load(context);
        assertThat(atomic.getOrdinalsValues().getValueCount(), equalTo(0L));
    }
    // dv based field data doesn't use index field data cache, so in the end noting should have been added
    assertThat(indexFieldDataCache.leafLevelBuilds, equalTo(0));
}

From source file:org.elasticsearch.xpack.security.authz.accesscontrol.FieldDataCacheWithFieldSubsetReaderTests.java

License:Open Source License

public void testPagedBytesIndexFieldData_global() throws Exception {
    assertThat(indexFieldDataCache.topLevelBuilds, equalTo(0));
    IndexOrdinalsFieldData global = pagedBytesIndexFieldData.loadGlobal(ir);
    AtomicOrdinalsFieldData atomic = global.load(ir.leaves().get(0));
    assertThat(atomic.getOrdinalsValues().getValueCount(), equalTo(numDocs));
    assertThat(indexFieldDataCache.topLevelBuilds, equalTo(1));

    DirectoryReader ir = FieldSubsetReader.wrap(this.ir, new CharacterRunAutomaton(Automata.makeEmpty()));
    global = pagedBytesIndexFieldData.loadGlobal(ir);
    atomic = global.load(ir.leaves().get(0));
    assertThat(atomic.getOrdinalsValues().getValueCount(), equalTo(0L));
    assertThat(indexFieldDataCache.topLevelBuilds, equalTo(1));
}

From source file:org.elasticsearch.xpack.security.authz.accesscontrol.FieldDataCacheWithFieldSubsetReaderTests.java

License:Open Source License

public void testPagedBytesIndexFieldData_segment() throws Exception {
    assertThat(indexFieldDataCache.leafLevelBuilds, equalTo(0));
    for (LeafReaderContext context : ir.leaves()) {
        AtomicOrdinalsFieldData atomic = pagedBytesIndexFieldData.load(context);
        assertThat(atomic.getOrdinalsValues().getValueCount(), greaterThanOrEqualTo(1L));
    }/*ww w . j  a v  a  2  s. c  o  m*/
    assertThat(indexFieldDataCache.leafLevelBuilds, equalTo(ir.leaves().size()));

    DirectoryReader ir = FieldSubsetReader.wrap(this.ir, new CharacterRunAutomaton(Automata.makeEmpty()));
    for (LeafReaderContext context : ir.leaves()) {
        AtomicOrdinalsFieldData atomic = pagedBytesIndexFieldData.load(context);
        assertThat(atomic.getOrdinalsValues().getValueCount(), equalTo(0L));
    }
    assertThat(indexFieldDataCache.leafLevelBuilds, equalTo(ir.leaves().size()));
}