+++ /dev/null
-package org.apache.lucene.analysis;
-
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import java.io.IOException;
-import java.io.Reader;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Random;
-
-import org.apache.lucene.util.LuceneTestCase;
-
-/**
- * Analyzer for testing
- * <p>
- * This analyzer is a replacement for Whitespace/Simple/KeywordAnalyzers
- * for unit tests. If you are testing a custom component such as a queryparser
- * or analyzer-wrapper that consumes analysis streams, its a great idea to test
- * it with this analyzer instead. MockAnalyzer has the following behavior:
- * <ul>
- * <li>By default, the assertions in {@link MockTokenizer} are turned on for extra
- * checks that the consumer is consuming properly. These checks can be disabled
- * with {@link #setEnableChecks(boolean)}.
- * <li>Payload data is randomly injected into the stream for more thorough testing
- * of payloads.
- * </ul>
- * @see MockTokenizer
- */
-public final class MockAnalyzer extends Analyzer {
- private final int pattern;
- private final boolean lowerCase;
- private final CharArraySet filter;
- private final boolean enablePositionIncrements;
- private int positionIncrementGap;
- private final Random random;
- private Map<String,Integer> previousMappings = new HashMap<String,Integer>();
- private boolean enableChecks = true;
-
- /**
- * Creates a new MockAnalyzer.
- *
- * @param random Random for payloads behavior
- * @param pattern pattern constant describing how tokenization should happen
- * @param lowerCase true if the tokenizer should lowercase terms
- * @param filter CharArraySet describing how terms should be filtered (set of stopwords, etc)
- * @param enablePositionIncrements true if position increments should reflect filtered terms.
- */
- public MockAnalyzer(Random random, int pattern, boolean lowerCase, CharArraySet filter, boolean enablePositionIncrements) {
- this.random = random;
- this.pattern = pattern;
- this.lowerCase = lowerCase;
- this.filter = filter;
- this.enablePositionIncrements = enablePositionIncrements;
- }
-
- /**
- * Calls {@link #MockAnalyzer(Random, int, boolean, CharArraySet, boolean)
- * MockAnalyzer(random, pattern, lowerCase, CharArraySet.EMPTY_STOPSET, false}).
- */
- public MockAnalyzer(Random random, int pattern, boolean lowerCase) {
- this(random, pattern, lowerCase, CharArraySet.EMPTY_SET, false);
- }
-
- /**
- * Create a Whitespace-lowercasing analyzer with no stopwords removal.
- * <p>
- * Calls {@link #MockAnalyzer(Random, int, boolean)
- * MockAnalyzer(random, MockTokenizer.WHITESPACE, true)}.
- */
- public MockAnalyzer(Random random) {
- this(random, MockTokenizer.WHITESPACE, true);
- }
-
- @Override
- public TokenStream tokenStream(String fieldName, Reader reader) {
- MockTokenizer tokenizer = new MockTokenizer(reader, pattern, lowerCase);
- tokenizer.setEnableChecks(enableChecks);
- StopFilter filt = new StopFilter(LuceneTestCase.TEST_VERSION_CURRENT, tokenizer, filter);
- filt.setEnablePositionIncrements(enablePositionIncrements);
- return maybePayload(filt, fieldName);
- }
-
- private class SavedStreams {
- MockTokenizer tokenizer;
- TokenFilter filter;
- }
-
- @Override
- public TokenStream reusableTokenStream(String fieldName, Reader reader)
- throws IOException {
- @SuppressWarnings("unchecked") Map<String,SavedStreams> map = (Map) getPreviousTokenStream();
- if (map == null) {
- map = new HashMap<String,SavedStreams>();
- setPreviousTokenStream(map);
- }
-
- SavedStreams saved = map.get(fieldName);
- if (saved == null) {
- saved = new SavedStreams();
- saved.tokenizer = new MockTokenizer(reader, pattern, lowerCase);
- saved.tokenizer.setEnableChecks(enableChecks);
- StopFilter filt = new StopFilter(LuceneTestCase.TEST_VERSION_CURRENT, saved.tokenizer, filter);
- filt.setEnablePositionIncrements(enablePositionIncrements);
- saved.filter = filt;
- saved.filter = maybePayload(saved.filter, fieldName);
- map.put(fieldName, saved);
- return saved.filter;
- } else {
- saved.tokenizer.reset(reader);
- return saved.filter;
- }
- }
-
- private synchronized TokenFilter maybePayload(TokenFilter stream, String fieldName) {
- Integer val = previousMappings.get(fieldName);
- if (val == null) {
- val = -1; // no payloads
- if (LuceneTestCase.rarely(random)) {
- switch(random.nextInt(3)) {
- case 0: val = -1; // no payloads
- break;
- case 1: val = Integer.MAX_VALUE; // variable length payload
- break;
- case 2: val = random.nextInt(12); // fixed length payload
- break;
- }
- }
- previousMappings.put(fieldName, val); // save it so we are consistent for this field
- }
-
- if (val == -1)
- return stream;
- else if (val == Integer.MAX_VALUE)
- return new MockVariableLengthPayloadFilter(random, stream);
- else
- return new MockFixedLengthPayloadFilter(random, stream, val);
- }
-
- public void setPositionIncrementGap(int positionIncrementGap){
- this.positionIncrementGap = positionIncrementGap;
- }
-
- @Override
- public int getPositionIncrementGap(String fieldName){
- return positionIncrementGap;
- }
-
- /**
- * Toggle consumer workflow checking: if your test consumes tokenstreams normally you
- * should leave this enabled.
- */
- public void setEnableChecks(boolean enableChecks) {
- this.enableChecks = enableChecks;
- }
-}
fnp / pylucene.git / blobdiff