+++ /dev/null
-package org.apache.lucene.queryParser;
-
-/**
- * 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 org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.BaseTokenStreamTestCase;
-import org.apache.lucene.analysis.LowerCaseFilter;
-import org.apache.lucene.analysis.TokenFilter;
-import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.analysis.standard.StandardTokenizer;
-import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
-import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.util.Version;
-
-/**
- * Test QueryParser's ability to deal with Analyzers that return more
- * than one token per position or that return tokens with a position
- * increment > 1.
- *
- */
-public class TestMultiAnalyzer extends BaseTokenStreamTestCase {
-
- private static int multiToken = 0;
-
- public void testMultiAnalyzer() throws ParseException {
-
- QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "", new MultiAnalyzer());
-
- // trivial, no multiple tokens:
- assertEquals("foo", qp.parse("foo").toString());
- assertEquals("foo", qp.parse("\"foo\"").toString());
- assertEquals("foo foobar", qp.parse("foo foobar").toString());
- assertEquals("\"foo foobar\"", qp.parse("\"foo foobar\"").toString());
- assertEquals("\"foo foobar blah\"", qp.parse("\"foo foobar blah\"").toString());
-
- // two tokens at the same position:
- assertEquals("(multi multi2) foo", qp.parse("multi foo").toString());
- assertEquals("foo (multi multi2)", qp.parse("foo multi").toString());
- assertEquals("(multi multi2) (multi multi2)", qp.parse("multi multi").toString());
- assertEquals("+(foo (multi multi2)) +(bar (multi multi2))",
- qp.parse("+(foo multi) +(bar multi)").toString());
- assertEquals("+(foo (multi multi2)) field:\"bar (multi multi2)\"",
- qp.parse("+(foo multi) field:\"bar multi\"").toString());
-
- // phrases:
- assertEquals("\"(multi multi2) foo\"", qp.parse("\"multi foo\"").toString());
- assertEquals("\"foo (multi multi2)\"", qp.parse("\"foo multi\"").toString());
- assertEquals("\"foo (multi multi2) foobar (multi multi2)\"",
- qp.parse("\"foo multi foobar multi\"").toString());
-
- // fields:
- assertEquals("(field:multi field:multi2) field:foo", qp.parse("field:multi field:foo").toString());
- assertEquals("field:\"(multi multi2) foo\"", qp.parse("field:\"multi foo\"").toString());
-
- // three tokens at one position:
- assertEquals("triplemulti multi3 multi2", qp.parse("triplemulti").toString());
- assertEquals("foo (triplemulti multi3 multi2) foobar",
- qp.parse("foo triplemulti foobar").toString());
-
- // phrase with non-default slop:
- assertEquals("\"(multi multi2) foo\"~10", qp.parse("\"multi foo\"~10").toString());
-
- // phrase with non-default boost:
- assertEquals("\"(multi multi2) foo\"^2.0", qp.parse("\"multi foo\"^2").toString());
-
- // phrase after changing default slop
- qp.setPhraseSlop(99);
- assertEquals("\"(multi multi2) foo\"~99 bar",
- qp.parse("\"multi foo\" bar").toString());
- assertEquals("\"(multi multi2) foo\"~99 \"foo bar\"~2",
- qp.parse("\"multi foo\" \"foo bar\"~2").toString());
- qp.setPhraseSlop(0);
-
- // non-default operator:
- qp.setDefaultOperator(QueryParser.AND_OPERATOR);
- assertEquals("+(multi multi2) +foo", qp.parse("multi foo").toString());
-
- }
-
- public void testMultiAnalyzerWithSubclassOfQueryParser() throws ParseException {
-
- DumbQueryParser qp = new DumbQueryParser("", new MultiAnalyzer());
- qp.setPhraseSlop(99); // modified default slop
-
- // direct call to (super's) getFieldQuery to demonstrate differnce
- // between phrase and multiphrase with modified default slop
- assertEquals("\"foo bar\"~99",
- qp.getSuperFieldQuery("","foo bar", true).toString());
- assertEquals("\"(multi multi2) bar\"~99",
- qp.getSuperFieldQuery("","multi bar", true).toString());
-
-
- // ask sublcass to parse phrase with modified default slop
- assertEquals("\"(multi multi2) foo\"~99 bar",
- qp.parse("\"multi foo\" bar").toString());
-
- }
-
- public void testPosIncrementAnalyzer() throws ParseException {
- QueryParser qp = new QueryParser(Version.LUCENE_24, "", new PosIncrementAnalyzer());
- assertEquals("quick brown", qp.parse("the quick brown").toString());
- assertEquals("\"quick brown\"", qp.parse("\"the quick brown\"").toString());
- assertEquals("quick brown fox", qp.parse("the quick brown fox").toString());
- assertEquals("\"quick brown fox\"", qp.parse("\"the quick brown fox\"").toString());
- }
-
- /**
- * Expands "multi" to "multi" and "multi2", both at the same position,
- * and expands "triplemulti" to "triplemulti", "multi3", and "multi2".
- */
- private class MultiAnalyzer extends Analyzer {
-
- public MultiAnalyzer() {
- }
-
- @Override
- public TokenStream tokenStream(String fieldName, Reader reader) {
- TokenStream result = new StandardTokenizer(TEST_VERSION_CURRENT, reader);
- result = new TestFilter(result);
- result = new LowerCaseFilter(TEST_VERSION_CURRENT, result);
- return result;
- }
- }
-
- private final class TestFilter extends TokenFilter {
-
- private String prevType;
- private int prevStartOffset;
- private int prevEndOffset;
-
- private final CharTermAttribute termAtt;
- private final PositionIncrementAttribute posIncrAtt;
- private final OffsetAttribute offsetAtt;
- private final TypeAttribute typeAtt;
-
- public TestFilter(TokenStream in) {
- super(in);
- termAtt = addAttribute(CharTermAttribute.class);
- posIncrAtt = addAttribute(PositionIncrementAttribute.class);
- offsetAtt = addAttribute(OffsetAttribute.class);
- typeAtt = addAttribute(TypeAttribute.class);
- }
-
- @Override
- public final boolean incrementToken() throws java.io.IOException {
- if (multiToken > 0) {
- termAtt.setEmpty().append("multi"+(multiToken+1));
- offsetAtt.setOffset(prevStartOffset, prevEndOffset);
- typeAtt.setType(prevType);
- posIncrAtt.setPositionIncrement(0);
- multiToken--;
- return true;
- } else {
- boolean next = input.incrementToken();
- if (!next) {
- return false;
- }
- prevType = typeAtt.type();
- prevStartOffset = offsetAtt.startOffset();
- prevEndOffset = offsetAtt.endOffset();
- String text = termAtt.toString();
- if (text.equals("triplemulti")) {
- multiToken = 2;
- return true;
- } else if (text.equals("multi")) {
- multiToken = 1;
- return true;
- } else {
- return true;
- }
- }
- }
-
- public void reset() throws IOException {
- super.reset();
- this.prevType = null;
- this.prevStartOffset = 0;
- this.prevEndOffset = 0;
- }
- }
-
- /**
- * Analyzes "the quick brown" as: quick(incr=2) brown(incr=1).
- * Does not work correctly for input other than "the quick brown ...".
- */
- private class PosIncrementAnalyzer extends Analyzer {
-
- public PosIncrementAnalyzer() {
- }
-
- @Override
- public TokenStream tokenStream(String fieldName, Reader reader) {
- TokenStream result = new StandardTokenizer(TEST_VERSION_CURRENT, reader);
- result = new TestPosIncrementFilter(result);
- result = new LowerCaseFilter(TEST_VERSION_CURRENT, result);
- return result;
- }
- }
-
- private final class TestPosIncrementFilter extends TokenFilter {
-
- CharTermAttribute termAtt;
- PositionIncrementAttribute posIncrAtt;
-
- public TestPosIncrementFilter(TokenStream in) {
- super(in);
- termAtt = addAttribute(CharTermAttribute.class);
- posIncrAtt = addAttribute(PositionIncrementAttribute.class);
- }
-
- @Override
- public final boolean incrementToken () throws java.io.IOException {
- while(input.incrementToken()) {
- if (termAtt.toString().equals("the")) {
- // stopword, do nothing
- } else if (termAtt.toString().equals("quick")) {
- posIncrAtt.setPositionIncrement(2);
- return true;
- } else {
- posIncrAtt.setPositionIncrement(1);
- return true;
- }
- }
- return false;
- }
- }
-
- /** a very simple subclass of QueryParser */
- private final static class DumbQueryParser extends QueryParser {
-
- public DumbQueryParser(String f, Analyzer a) {
- super(TEST_VERSION_CURRENT, f, a);
- }
-
- /** expose super's version */
- public Query getSuperFieldQuery(String f, String t, boolean quoted)
- throws ParseException {
- return super.getFieldQuery(f,t,quoted);
- }
- /** wrap super's version */
- @Override
- protected Query getFieldQuery(String f, String t, boolean quoted)
- throws ParseException {
- return new DumbQueryWrapper(getSuperFieldQuery(f,t,quoted));
- }
- }
-
- /**
- * A very simple wrapper to prevent instanceof checks but uses
- * the toString of the query it wraps.
- */
- private final static class DumbQueryWrapper extends Query {
-
- private Query q;
- public DumbQueryWrapper(Query q) {
- super();
- this.q = q;
- }
- @Override
- public String toString(String f) {
- return q.toString(f);
- }
- }
-
-}
fnp / pylucene.git / blobdiff