| /* |
| * 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.pipes.internal.bindings; |
| |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.caconfig.ConfigurationBuilder; |
| import org.apache.sling.caconfig.spi.ConfigurationMetadataProvider; |
| import org.apache.sling.caconfig.spi.metadata.ConfigurationMetadata; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * This is a "virtual" containing configuration names as keys, and the underlying value maps/value map collections as values. |
| * The map accesses only the data that is really required in a lazy fashion. |
| */ |
| public class ConfigurationMap implements Map<String, Object> { |
| |
| private final Resource resource; |
| private final ConfigurationMetadataProvider configMetadataProvider; |
| private Set<String> configNamesCache; |
| private Map<String, Object> valuesCache = new HashMap<>(); |
| |
| public ConfigurationMap(Resource resource, ConfigurationMetadataProvider provider) { |
| this.resource = resource; |
| this.configMetadataProvider = provider; |
| } |
| |
| private Set<String> getConfigNames() { |
| if (configNamesCache == null) { |
| configNamesCache = configMetadataProvider.getConfigurationNames(); |
| } |
| return configNamesCache; |
| } |
| |
| @Override |
| public int size() { |
| return getConfigNames().size(); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return getConfigNames().isEmpty(); |
| } |
| |
| @Override |
| public boolean containsKey(Object key) { |
| return getConfigNames().contains(key); |
| } |
| |
| @Override |
| public Object get(Object key) { |
| Object value = valuesCache.get(key); |
| if (value == null) { |
| value = getConfigValue((String) key); |
| if (value != null) { |
| valuesCache.put((String) key, value); |
| } |
| } |
| return value; |
| } |
| |
| private Object getConfigValue(String configName) { |
| @SuppressWarnings("null") |
| ConfigurationBuilder configBuilder = resource.adaptTo(ConfigurationBuilder.class).name(configName); |
| if (isCollection(configName)) { |
| return configBuilder.asValueMapCollection(); |
| } else { |
| return configBuilder.asValueMap(); |
| } |
| } |
| |
| private boolean isCollection(String configName) { |
| ConfigurationMetadata configMetadata = configMetadataProvider.getConfigurationMetadata(configName); |
| if (configMetadata != null) { |
| return configMetadata.isCollection(); |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public Set<String> keySet() { |
| return getConfigNames(); |
| } |
| |
| @Override |
| public boolean containsValue(Object value) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Object put(String key, Object value) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Object remove(Object key) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void putAll(Map<? extends String, ? extends Object> m) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void clear() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Collection<Object> values() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Set<java.util.Map.Entry<String, Object>> entrySet() { |
| throw new UnsupportedOperationException(); |
| } |
| } |