--- /dev/null
+package org.apache.lucene.queryParser.standard;
+
+/**
+ * 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.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.CharTermAttribute;
+import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
+import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
+import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
+import org.apache.lucene.queryParser.core.QueryNodeException;
+import org.apache.lucene.queryParser.standard.config.StandardQueryConfigHandler;
+import org.apache.lucene.util.LuceneTestCase;
+
+/**
+ * This test case is a copy of the core Lucene query parser test, it was adapted
+ * to use new QueryParserHelper instead of the old query parser.
+ *
+ * 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 TestMultiAnalyzerQPHelper extends LuceneTestCase {
+
+ private static int multiToken = 0;
+
+ @SuppressWarnings("deprecation")
+ public void testMultiAnalyzer() throws QueryNodeException {
+
+ StandardQueryParser qp = new StandardQueryParser();
+ qp.setAnalyzer(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.setDefaultPhraseSlop(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.setDefaultPhraseSlop(0);
+
+ // non-default operator:
+ qp.setDefaultOperator(StandardQueryConfigHandler.Operator.AND);
+ assertEquals("+(multi multi2) +foo", qp.parse("multi foo", "").toString());
+
+ }
+
+ // public void testMultiAnalyzerWithSubclassOfQueryParser() throws
+ // ParseException {
+ // this test doesn't make sense when using the new QueryParser API
+ // 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").toString());
+ // assertEquals("\"(multi multi2) bar\"~99",
+ // qp.getSuperFieldQuery("","multi bar").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 QueryNodeException {
+ StandardQueryParser qp = new StandardQueryParser();
+ qp.setAnalyzer(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 = addAttribute(CharTermAttribute.class);
+ private final PositionIncrementAttribute posIncrAtt = addAttribute(PositionIncrementAttribute.class);
+ private final OffsetAttribute offsetAtt = addAttribute(OffsetAttribute.class);
+ private final TypeAttribute typeAtt = addAttribute(TypeAttribute.class);
+
+ public TestFilter(TokenStream in) {
+ super(in);
+ }
+
+ @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;
+ }
+ }
+ }
+
+ @Override
+ 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 class TestPosIncrementFilter extends TokenFilter {
+
+ private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
+ private final PositionIncrementAttribute posIncrAtt = addAttribute(PositionIncrementAttribute.class);
+
+ public TestPosIncrementFilter(TokenStream in) {
+ super(in);
+ }
+
+ @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;
+ }
+
+ }
+
+}
fnp / pylucene.git / blobdiff