package org.apache.solr.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.StringReader;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.search.AutomatonQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.util.automaton.Automaton;
import org.apache.lucene.util.automaton.SpecialOperations;
import org.apache.solr.SolrTestCaseJ4;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.schema.IndexSchema;
import org.apache.solr.schema.IndexSchemaFactory;
import org.apache.solr.search.QParser;
import org.apache.solr.search.SolrQueryParser;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.apache.lucene.analysis.BaseTokenStreamTestCase.*;
public class TestReversedWildcardFilterFactory extends SolrTestCaseJ4 {
Map<String,String> args = new HashMap<>();
IndexSchema schema;
@BeforeClass
public static void beforeClass() throws Exception {
initCore("solrconfig.xml","schema-reversed.xml");
}
@Override
@Before
public void setUp() throws Exception {
super.setUp();
schema = IndexSchemaFactory.buildIndexSchema(getSchemaFile(), solrConfig);
clearIndex();
assertU(commit());
}
@Test
public void testReversedTokens() throws IOException {
String text = "simple text";
args.put("withOriginal", "true");
ReversedWildcardFilterFactory factory = new ReversedWildcardFilterFactory(args);
TokenStream input = factory.create(whitespaceMockTokenizer(text));
assertTokenStreamContents(input,
new String[] { "\u0001elpmis", "simple", "\u0001txet", "text" },
new int[] { 1, 0, 1, 0 });
// now without original tokens
args.put("withOriginal", "false");
factory = new ReversedWildcardFilterFactory(args);
input = factory.create(whitespaceMockTokenizer(text));
assertTokenStreamContents(input,
new String[] { "\u0001elpmis", "\u0001txet" },
new int[] { 1, 1 });
}
@Test
public void testIndexingAnalysis() throws Exception {
Analyzer a = schema.getAnalyzer();
String text = "one two three si\uD834\uDD1Ex";
// field one
TokenStream input = a.tokenStream("one", text);
assertTokenStreamContents(input,
new String[] { "\u0001eno", "one", "\u0001owt", "two",
"\u0001eerht", "three", "\u0001x\uD834\uDD1Eis", "si\uD834\uDD1Ex" },
new int[] { 0, 0, 4, 4, 8, 8, 14, 14 },
new int[] { 3, 3, 7, 7, 13, 13, 19, 19 },
new int[] { 1, 0, 1, 0, 1, 0, 1, 0 }
);
// field two
input = a.tokenStream("two", text);
assertTokenStreamContents(input,
new String[] { "\u0001eno", "\u0001owt",
"\u0001eerht", "\u0001x\uD834\uDD1Eis" },
new int[] { 0, 4, 8, 14 },
new int[] { 3, 7, 13, 19 },
new int[] { 1, 1, 1, 1 }
);
// field three
input = a.tokenStream("three", text);
assertTokenStreamContents(input,
new String[] { "one", "two", "three", "si\uD834\uDD1Ex" },
new int[] { 0, 4, 8, 14 },
new int[] { 3, 7, 13, 19 }
);
}
@Test
public void testQueryParsing() throws Exception {
// add some docs
assertU(adoc("id", "1", "one", "one"));
assertU(adoc("id", "2", "two", "two"));
assertU(adoc("id", "3", "three", "three"));
assertU(adoc("id", "4", "one", "four"));
assertU(adoc("id", "5", "two", "five"));
assertU(adoc("id", "6", "three", "si\uD834\uDD1Ex"));
assertU(commit());
assertQ("should have matched",
req("+id:1 +one:one"),
"//result[@numFound=1]");
assertQ("should have matched",
req("+id:4 +one:f*ur"),
"//result[@numFound=1]");
assertQ("should have matched",
req("+id:6 +three:*si\uD834\uDD1Ex"),
"//result[@numFound=1]");
SolrQueryRequest req = req();
QParser qparser = QParser.getParser("id:1", "lucene", req);
SolrQueryParser parserTwo = new SolrQueryParser(qparser, "two");
assertTrue(parserTwo.getAllowLeadingWildcard());
// test conditional reversal
assertTrue(wasReversed(parserTwo, "*hree"));
assertTrue(wasReversed(parserTwo, "t*ree"));
assertTrue(wasReversed(parserTwo, "th*ee"));
assertFalse(wasReversed(parserTwo, "thr*e"));
assertTrue(wasReversed(parserTwo, "?hree"));
assertTrue(wasReversed(parserTwo, "t?ree"));
assertFalse(wasReversed(parserTwo, "th?ee"));
assertFalse(wasReversed(parserTwo, "th?*ee"));
assertFalse(wasReversed(parserTwo, "short*token"));
assertTrue(wasReversed(parserTwo, "ver*longtoken"));
req.close();
}
/** fragile assert: depends on our implementation, but cleanest way to check for now */
private boolean wasReversed(SolrQueryParser qp, String query) throws Exception {
Query q = qp.parse(query);
if (!(q instanceof AutomatonQuery))
return false;
// this is a hack to get the protected Automaton field in AutomatonQuery,
// may break in later lucene versions - we have no getter... for good reasons.
final Field automatonField = AutomatonQuery.class.getDeclaredField("automaton");
automatonField.setAccessible(true);
Automaton automaton = (Automaton) automatonField.get(q);
String prefix = SpecialOperations.getCommonPrefix(automaton);
return prefix.length() > 0 && prefix.charAt(0) == '\u0001';
}
@Test
public void testFalsePositives() throws Exception {
// add a doc
assertU(adoc("id", "1", "one", "gomez", "two", "gomez", "three", "gomez"));
assertU(commit());
assertQ("false positive",
req("+id:1 +one:*zemog*"),
"//result[@numFound=0]");
assertQ("false positive",
req("+id:1 +two:*zemog*"),
"//result[@numFound=0]");
assertQ("false positive",
req("+id:1 +three:*zemog*"),
"//result[@numFound=0]");
assertQ("should have matched",
req("+id:1 +one:*omez*"),
"//result[@numFound=1]");
}
}