| /* |
| * 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. |
| */ |
| package org.apache.jackrabbit.oak.spi.descriptors; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.jcr.Value; |
| import javax.jcr.ValueFactory; |
| |
| import org.apache.jackrabbit.commons.SimpleValueFactory; |
| import org.apache.jackrabbit.oak.api.Descriptors; |
| import org.apache.jackrabbit.oak.spi.whiteboard.Tracker; |
| import org.junit.Test; |
| |
| public class AggregatingDescriptorsTest { |
| |
| static class DescriptorEntry { |
| private final String key; |
| private final Value value; |
| private final Value[] values; |
| private final boolean singleValued; |
| private final boolean standard; |
| |
| DescriptorEntry(String key, Value value, Value[] values, boolean singleValued, |
| boolean standard) { |
| this.key = key; |
| this.value = value; |
| this.values = values; |
| this.singleValued = singleValued; |
| this.standard = standard; |
| } |
| |
| static DescriptorEntry fromKey(String key, |
| Descriptors descriptors) { |
| if (descriptors.isSingleValueDescriptor(key)) { |
| return newSingleValuedEntry(key, descriptors.getValue(key), |
| descriptors.isStandardDescriptor(key)); |
| } else { |
| return newMultiValuedEntry(key, descriptors.getValues(key), |
| descriptors.isStandardDescriptor(key)); |
| } |
| } |
| |
| private static DescriptorEntry newMultiValuedEntry(String key, |
| Value[] values, boolean standardDescriptor) { |
| return new DescriptorEntry(key, null, values, false, standardDescriptor); |
| } |
| |
| private static DescriptorEntry newSingleValuedEntry(String key, |
| Value value, boolean standardDescriptor) { |
| return new DescriptorEntry(key, value, null, true, standardDescriptor); |
| } |
| |
| } |
| |
| class MyTracker<T> implements Tracker<T> { |
| |
| List<T> services; |
| |
| public void setServices(List<T> services) { |
| this.services = services; |
| } |
| |
| public void addService(T service) { |
| if (services == null) { |
| services = new LinkedList<T>(); |
| } |
| services.add(service); |
| } |
| |
| @Override |
| public List<T> getServices() { |
| return services; |
| } |
| |
| @Override |
| public void stop() { |
| // no-op |
| } |
| |
| } |
| |
| private MyTracker<Descriptors> createTracker() { |
| return new MyTracker<Descriptors>(); |
| } |
| |
| private void assertEmpty(AggregatingDescriptors aggregator) { |
| assertFalse(aggregator.isSingleValueDescriptor("foo")); |
| assertFalse(aggregator.isStandardDescriptor("foo")); |
| assertNull(aggregator.getValue("foo")); |
| assertNull(aggregator.getValues("foo")); |
| String[] keys = aggregator.getKeys(); |
| assertNotNull(keys); |
| assertEquals(0, keys.length); |
| } |
| |
| @Test |
| public void testNullServices() throws Exception { |
| try { |
| new AggregatingDescriptors(null); |
| fail("should complain"); |
| } catch (IllegalArgumentException iae) { |
| // ok |
| } |
| final MyTracker<Descriptors> tracker = createTracker(); |
| AggregatingDescriptors aggregator = new AggregatingDescriptors(tracker); |
| assertEmpty(aggregator); |
| } |
| |
| @Test |
| public void testEmptyServices() throws Exception { |
| final MyTracker<Descriptors> tracker = createTracker(); |
| AggregatingDescriptors aggregator = new AggregatingDescriptors(tracker); |
| tracker.setServices(new LinkedList<Descriptors>()); |
| assertEmpty(aggregator); |
| } |
| |
| private void assertMatches(AggregatingDescriptors aggregator, int expectedEntryCount, |
| GenericDescriptors... descriptors) { |
| // prepare the expectedEntries map |
| final Map<String, DescriptorEntry> expectedEntries = new HashMap<String, AggregatingDescriptorsTest.DescriptorEntry>(); |
| for (int i = 0; i < descriptors.length; i++) { |
| final String[] keys = descriptors[i].getKeys(); |
| for (int j = 0; j < keys.length; j++) { |
| final DescriptorEntry entry = DescriptorEntry.fromKey(keys[j], descriptors[i]); |
| // implements overwriting: eg descriptors[1] values overwrite descriptors[0] values |
| // (in terms of the AggregatingDescriptors it is the opposite: the service |
| // that is enlisted first always wins - with the idea that later added |
| // services should not overwrite earlier ones - lowest startorder wins) |
| expectedEntries.put(keys[j], entry); |
| } |
| } |
| |
| assertEquals(expectedEntryCount, expectedEntries.size()); |
| |
| // now go through the resulting expectedEntries and match them |
| // with the aggregator one |
| final Collection<DescriptorEntry> entries = expectedEntries.values(); |
| for (Iterator<DescriptorEntry> it = entries.iterator(); it.hasNext();) { |
| DescriptorEntry entry = it.next(); |
| assertEquals(entry.standard, aggregator.isStandardDescriptor(entry.key)); |
| if (entry.singleValued) { |
| assertTrue(aggregator.isSingleValueDescriptor(entry.key)); |
| Value expectedValue = entry.value; |
| Value actualValue = aggregator.getValue(entry.key); |
| assertTrue(expectedValue.equals(actualValue)); |
| } else { |
| assertFalse(aggregator.isSingleValueDescriptor(entry.key)); |
| Value[] expectedValues = entry.values; |
| Value[] actualValues = aggregator.getValues(entry.key); |
| assertEquals(expectedValues.length, actualValues.length); |
| for(int i=0; i<expectedValues.length; i++) { |
| assertEquals(expectedValues[i], actualValues[i]); |
| } |
| } |
| } |
| assertEquals(expectedEntryCount, aggregator.getKeys().length); |
| } |
| |
| @Test |
| public void testInitialDescriptors() throws Exception { |
| final ValueFactory valueFactory = new SimpleValueFactory(); |
| final MyTracker<Descriptors> tracker = createTracker(); |
| final GenericDescriptors input = new GenericDescriptors(); |
| input.put("a", valueFactory.createValue("b"), true, false); |
| input.put("b", valueFactory.createValue("c"), true, true); |
| tracker.addService(input); |
| AggregatingDescriptors aggregator = new AggregatingDescriptors(tracker); |
| assertMatches(aggregator, 2, input); |
| } |
| |
| @Test |
| public void testLaterAddedDescriptors() throws Exception { |
| final ValueFactory valueFactory = new SimpleValueFactory(); |
| final MyTracker<Descriptors> tracker = createTracker(); |
| AggregatingDescriptors aggregator = new AggregatingDescriptors(tracker); |
| assertMatches(aggregator, 0); |
| final GenericDescriptors input1 = new GenericDescriptors(); |
| input1.put("a", valueFactory.createValue("b"), true, false); |
| input1.put("b", valueFactory.createValue("c"), true, true); |
| tracker.addService(input1); |
| assertMatches(aggregator, 2, input1); |
| final GenericDescriptors input2 = new GenericDescriptors(); |
| input2.put("b", valueFactory.createValue("c2"), true, true); |
| input2.put("c", valueFactory.createValue("d"), true, true); |
| tracker.addService(input2); |
| assertMatches(aggregator, 3, input2, input1); |
| } |
| |
| } |