File DefaultQueryExecutorManager.java
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|---|---|---|---|---|---|---|---|
| DefaultQueryExecutorManager | 51 | 10 | 0% | 4 | 1 |
Contributing tests
This file is covered by 14 tests.
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| 1 | /* | |
| 2 | * See the NOTICE file distributed with this work for additional | |
| 3 | * information regarding copyright ownership. | |
| 4 | * | |
| 5 | * This is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU Lesser General Public License as | |
| 7 | * published by the Free Software Foundation; either version 2.1 of | |
| 8 | * the License, or (at your option) any later version. | |
| 9 | * | |
| 10 | * This software is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * Lesser General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU Lesser General Public | |
| 16 | * License along with this software; if not, write to the Free | |
| 17 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
| 18 | * 02110-1301 USA, or see the FSF site: http://www.fsf.org. | |
| 19 | */ | |
| 20 | package org.xwiki.query.internal; | |
| 21 | ||
| 22 | import java.lang.reflect.Type; | |
| 23 | import java.util.HashSet; | |
| 24 | import java.util.List; | |
| 25 | import java.util.Set; | |
| 26 | ||
| 27 | import javax.inject.Inject; | |
| 28 | import javax.inject.Named; | |
| 29 | import javax.inject.Provider; | |
| 30 | import javax.inject.Singleton; | |
| 31 | ||
| 32 | import org.xwiki.component.annotation.Component; | |
| 33 | import org.xwiki.component.descriptor.ComponentDescriptor; | |
| 34 | import org.xwiki.component.manager.ComponentLookupException; | |
| 35 | import org.xwiki.component.manager.ComponentManager; | |
| 36 | import org.xwiki.query.Query; | |
| 37 | import org.xwiki.query.QueryException; | |
| 38 | import org.xwiki.query.QueryExecutor; | |
| 39 | import org.xwiki.query.QueryExecutorManager; | |
| 40 | ||
| 41 | /** | |
| 42 | * Default implementation of {@link QueryExecutorManager}. | |
| 43 | * | |
| 44 | * @version $Id: a716918ef3b24146eb1ae1269e8dad40510a09ab $ | |
| 45 | */ | |
| 46 | // Note that we force the Component annotation so that this component is only registered as a | |
| 47 | // QueryExecutorManager and not a QueryExecutor too since we don't want this manager to be visible | |
| 48 | // to users as a valid QueryExecutor component. | |
| 49 | @Component(roles = {QueryExecutorManager.class }) | |
| 50 | @Singleton | |
| 51 | public class DefaultQueryExecutorManager implements QueryExecutorManager | |
| 52 | { | |
| 53 | @Inject | |
| 54 | @Named("context") | |
| 55 | private Provider<ComponentManager> componentManagerProvider; | |
| 56 | ||
| 57 | /** | |
| 58 | * Executor provider for named queries. This provider will give us an executor which is native to the type of | |
| 59 | * storage engine used. | |
| 60 | */ | |
| 61 | @Inject | |
| 62 | private Provider<QueryExecutor> namedQueryExecutorProvider; | |
| 63 | ||
| 64 | 12219 |  @Override |
| 65 | public <T> List<T> execute(Query query) throws QueryException | |
| 66 | { | |
| 67 | 12223 | if (query.isNamed()) { |
| 68 | 289 | return this.namedQueryExecutorProvider.get().execute(query); |
| 69 | } else { | |
| 70 | 11934 | try { |
| 71 | 11934 | return this.componentManagerProvider.get() |
| 72 | .<QueryExecutor>getInstance(QueryExecutor.class, query.getLanguage()).execute(query); | |
| 73 | } catch (ComponentLookupException e) { | |
| 74 | 0 | throw new QueryException("Fail to lookup query executor", query, e); |
| 75 | } | |
| 76 | } | |
| 77 | } | |
| 78 | ||
| 79 | 12094 | @Override |
| 80 | public Set<String> getLanguages() | |
| 81 | { | |
| 82 | 12094 | List<ComponentDescriptor<QueryExecutor>> executors = |
| 83 | this.componentManagerProvider.get().getComponentDescriptorList((Type) QueryExecutor.class); | |
| 84 | ||
| 85 | 12094 | Set<String> executorNames = new HashSet<String>(executors.size()); |
| 86 | 12094 | for (ComponentDescriptor<QueryExecutor> executor : executors) { |
| 87 | 43317 | executorNames.add(executor.getRoleHint()); |
| 88 | } | |
| 89 | ||
| 90 | 12094 | return executorNames; |
| 91 | } | |
| 92 | } |