opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/mapping/attributes/fromxml/CompositeAttributeReadingStrategy.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.netconf.confignetconfconnector.mapping.attributes.fromxml;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.Lists;
  13 import com.google.common.collect.Maps;
  14 import org.opendaylight.controller.netconf.util.xml.XmlElement;
  15
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Map.Entry;
  19
  20 public class CompositeAttributeReadingStrategy extends AbstractAttributeReadingStrategy {
  21
  22     private final Map<String, AttributeReadingStrategy> innerStrategies;
  23
  24     public CompositeAttributeReadingStrategy(String nullableDefault,
  25             Map<String, AttributeReadingStrategy> innerStrategies) {
  26         super(nullableDefault);
  27         this.innerStrategies = innerStrategies;
  28     }
  29
  30     @Override
  31     AttributeConfigElement readElementHook(List<XmlElement> configNodes) {
  32
  33         Preconditions.checkState(configNodes.size() == 1, "This element should be present only once %s", configNodes);
  34
  35         XmlElement complexElement = configNodes.get(0);
  36
  37         Map<String, Object> innerMap = Maps.newHashMap();
  38
  39         List<XmlElement> recognisedChildren = Lists.newArrayList();
  40         for (Entry<String, AttributeReadingStrategy> innerAttrEntry : innerStrategies.entrySet()) {
  41             List<XmlElement> childItem = complexElement.getChildElementsWithSameNamespace(innerAttrEntry.getKey());
  42             recognisedChildren.addAll(childItem);
  43
  44             AttributeConfigElement resolvedInner = innerAttrEntry.getValue().readElement(childItem);
  45
  46             innerMap.put(innerAttrEntry.getKey(), resolvedInner.getValue());
  47         }
  48
  49         complexElement.checkUnrecognisedElements(recognisedChildren);
  50
  51         return AttributeConfigElement.create(getNullableDefault(), innerMap);
  52     }
  53
  54 }