| /* |
| * 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.api.wrappers; |
| |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.api.resource.ValueMap; |
| |
| /** |
| * A value map wrapper which implements deep reading of properties |
| * based on the resource tree. |
| * @since 2.5 (Sling API Bundle 2.7.0) |
| */ |
| public class DeepReadValueMapDecorator extends ValueMapDecorator { |
| |
| private final String pathPrefix; |
| |
| private final ResourceResolver resolver; |
| |
| private final ValueMap base; |
| |
| public DeepReadValueMapDecorator(final Resource resource, final ValueMap base) { |
| super(base); |
| this.pathPrefix = resource.getPath() + "/"; |
| this.resolver = resource.getResourceResolver(); |
| this.base = base; |
| } |
| |
| private ValueMap getValueMap(final String name) { |
| final int pos = name.lastIndexOf("/"); |
| if ( pos == -1 ) { |
| return this.base; |
| } |
| final Resource rsrc = this.resolver.getResource(pathPrefix + name.substring(0, pos)); |
| if ( rsrc != null ) { |
| final ValueMap vm = rsrc.adaptTo(ValueMap.class); |
| if ( vm != null ) { |
| return vm; |
| } |
| } |
| return ValueMap.EMPTY; // fall back |
| } |
| |
| private String getPropertyName(final String name) { |
| final int pos = name.lastIndexOf("/"); |
| if ( pos == -1 ) { |
| return name; |
| } |
| return name.substring(pos + 1); |
| } |
| |
| /** |
| * @see org.apache.sling.api.resource.ValueMap#get(java.lang.String, java.lang.Class) |
| */ |
| @Override |
| public <T> T get(final String name, final Class<T> type) { |
| return this.getValueMap(name).get(this.getPropertyName(name), type); |
| } |
| |
| /** |
| * @see org.apache.sling.api.resource.ValueMap#get(java.lang.String, java.lang.Object) |
| */ |
| @Override |
| public <T> T get(final String name, T defaultValue) { |
| return this.getValueMap(name).get(this.getPropertyName(name), defaultValue); |
| } |
| |
| /** |
| * @see org.apache.sling.api.wrappers.ValueMapDecorator#containsKey(java.lang.Object) |
| */ |
| @Override |
| public boolean containsKey(final Object key) { |
| if ( key == null ) { |
| return false; |
| } |
| final String name = key.toString(); |
| return this.getValueMap(name).containsKey(this.getPropertyName(name)); |
| } |
| |
| /** |
| * @see org.apache.sling.api.wrappers.ValueMapDecorator#get(java.lang.Object) |
| */ |
| @Override |
| public Object get(final Object key) { |
| if ( key == null ) { |
| return null; |
| } |
| final String name = key.toString(); |
| return this.getValueMap(name).get(this.getPropertyName(name)); |
| } |
| } |