package org.apache.lucene.expressions;
/*
* 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.util.HashMap;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.NumericDocValuesField;
import org.apache.lucene.expressions.js.JavascriptCompiler;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.queries.function.FunctionValues;
import org.apache.lucene.queries.function.ValueSource;
import org.apache.lucene.queries.function.ValueSourceScorer;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.search.SortField;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.LuceneTestCase.SuppressCodecs;
@SuppressCodecs("Lucene3x")
public class TestExpressionValueSource extends LuceneTestCase {
DirectoryReader reader;
Directory dir;
@Override
public void setUp() throws Exception {
super.setUp();
dir = newDirectory();
IndexWriterConfig iwc = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
iwc.setMergePolicy(newLogMergePolicy());
RandomIndexWriter iw = new RandomIndexWriter(random(), dir, iwc);
Document doc = new Document();
doc.add(newStringField("id", "1", Field.Store.YES));
doc.add(newTextField("body", "some contents and more contents", Field.Store.NO));
doc.add(new NumericDocValuesField("popularity", 5));
iw.addDocument(doc);
doc = new Document();
doc.add(newStringField("id", "2", Field.Store.YES));
doc.add(newTextField("body", "another document with different contents", Field.Store.NO));
doc.add(new NumericDocValuesField("popularity", 20));
iw.addDocument(doc);
doc = new Document();
doc.add(newStringField("id", "3", Field.Store.YES));
doc.add(newTextField("body", "crappy contents", Field.Store.NO));
doc.add(new NumericDocValuesField("popularity", 2));
iw.addDocument(doc);
iw.forceMerge(1);
reader = iw.getReader();
iw.close();
}
@Override
public void tearDown() throws Exception {
reader.close();
dir.close();
super.tearDown();
}
public void testTypes() throws Exception {
Expression expr = JavascriptCompiler.compile("2*popularity");
SimpleBindings bindings = new SimpleBindings();
bindings.add(new SortField("popularity", SortField.Type.LONG));
ValueSource vs = expr.getValueSource(bindings);
assertEquals(1, reader.leaves().size());
AtomicReaderContext leaf = reader.leaves().get(0);
FunctionValues values = vs.getValues(new HashMap<String,Object>(), leaf);
assertEquals(10, values.doubleVal(0), 0);
assertEquals(10, values.floatVal(0), 0);
assertEquals(10, values.longVal(0));
assertEquals(10, values.intVal(0));
assertEquals(10, values.shortVal(0));
assertEquals(10, values.byteVal(0));
assertEquals("10.0", values.strVal(0));
assertEquals(new Double(10), values.objectVal(0));
assertEquals(40, values.doubleVal(1), 0);
assertEquals(40, values.floatVal(1), 0);
assertEquals(40, values.longVal(1));
assertEquals(40, values.intVal(1));
assertEquals(40, values.shortVal(1));
assertEquals(40, values.byteVal(1));
assertEquals("40.0", values.strVal(1));
assertEquals(new Double(40), values.objectVal(1));
assertEquals(4, values.doubleVal(2), 0);
assertEquals(4, values.floatVal(2), 0);
assertEquals(4, values.longVal(2));
assertEquals(4, values.intVal(2));
assertEquals(4, values.shortVal(2));
assertEquals(4, values.byteVal(2));
assertEquals("4.0", values.strVal(2));
assertEquals(new Double(4), values.objectVal(2));
}
public void testRangeScorer() throws Exception {
Expression expr = JavascriptCompiler.compile("2*popularity");
SimpleBindings bindings = new SimpleBindings();
bindings.add(new SortField("popularity", SortField.Type.LONG));
ValueSource vs = expr.getValueSource(bindings);
assertEquals(1, reader.leaves().size());
AtomicReaderContext leaf = reader.leaves().get(0);
FunctionValues values = vs.getValues(new HashMap<String,Object>(), leaf);
// everything
ValueSourceScorer scorer = values.getRangeScorer(leaf.reader(), "4", "40", true, true);
assertEquals(-1, scorer.docID());
assertEquals(0, scorer.nextDoc());
assertEquals(1, scorer.nextDoc());
assertEquals(2, scorer.nextDoc());
assertEquals(DocIdSetIterator.NO_MORE_DOCS, scorer.nextDoc());
// just the first doc
scorer = values.getRangeScorer(leaf.reader(), "4", "40", false, false);
assertEquals(-1, scorer.docID());
assertEquals(0, scorer.nextDoc());
assertEquals(DocIdSetIterator.NO_MORE_DOCS, scorer.nextDoc());
}
public void testEquals() throws Exception {
Expression expr = JavascriptCompiler.compile("sqrt(a) + ln(b)");
SimpleBindings bindings = new SimpleBindings();
bindings.add(new SortField("a", SortField.Type.INT));
bindings.add(new SortField("b", SortField.Type.INT));
ValueSource vs1 = expr.getValueSource(bindings);
// same instance
assertEquals(vs1, vs1);
// null
assertFalse(vs1.equals(null));
// other object
assertFalse(vs1.equals("foobar"));
// same bindings and expression instances
ValueSource vs2 = expr.getValueSource(bindings);
assertEquals(vs1.hashCode(), vs2.hashCode());
assertEquals(vs1, vs2);
// equiv bindings (different instance)
SimpleBindings bindings2 = new SimpleBindings();
bindings2.add(new SortField("a", SortField.Type.INT));
bindings2.add(new SortField("b", SortField.Type.INT));
ValueSource vs3 = expr.getValueSource(bindings2);
assertEquals(vs1, vs3);
// different bindings (same names, different types)
SimpleBindings bindings3 = new SimpleBindings();
bindings3.add(new SortField("a", SortField.Type.LONG));
bindings3.add(new SortField("b", SortField.Type.INT));
ValueSource vs4 = expr.getValueSource(bindings3);
assertFalse(vs1.equals(vs4));
}
}