| /*- |
| * 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.sling.query.impl.resource.jcr; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.query.impl.iterator.AbstractIterator; |
| import org.apache.sling.query.impl.resource.jcr.query.JcrQueryBuilder; |
| import org.apache.sling.query.impl.selector.parser.SelectorSegment; |
| |
| public class JcrQueryIterator extends AbstractIterator<Resource> { |
| |
| private final ResourceResolver resolver; |
| |
| private final String query; |
| |
| private Iterator<Resource> currentIterator; |
| |
| public JcrQueryIterator(List<SelectorSegment> segments, Resource root, JcrTypeResolver typeResolver) { |
| JcrQueryBuilder builder = new JcrQueryBuilder(typeResolver); |
| query = builder.buildQuery(segments, root.getPath()); |
| resolver = root.getResourceResolver(); |
| } |
| |
| @Override |
| protected Resource getElement() { |
| if (currentIterator == null) { |
| currentIterator = resolver.findResources(query, "JCR-SQL2"); |
| } |
| if (currentIterator.hasNext()) { |
| return currentIterator.next(); |
| } else { |
| return null; |
| } |
| } |
| } |