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
  15 import org.opendaylight.controller.netconf.api.NetconfDocumentedException;
  16 import org.opendaylight.controller.netconf.util.xml.XmlElement;
  17
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Map.Entry;
  21
  22 public class CompositeAttributeReadingStrategy extends AbstractAttributeReadingStrategy {
  23
  24     private final Map<String, AttributeReadingStrategy> innerStrategies;
  25
  26     public CompositeAttributeReadingStrategy(String nullableDefault,
  27             Map<String, AttributeReadingStrategy> innerStrategies) {
  28         super(nullableDefault);
  29         this.innerStrategies = innerStrategies;
  30     }
  31
  32     @Override
  33     AttributeConfigElement readElementHook(List<XmlElement> configNodes) throws NetconfDocumentedException {
  34
  35         Preconditions.checkState(configNodes.size() == 1, "This element should be present only once %s", configNodes);
  36
  37         XmlElement complexElement = configNodes.get(0);
  38
  39         Map<String, Object> innerMap = Maps.newHashMap();
  40
  41         List<XmlElement> recognisedChildren = Lists.newArrayList();
  42         for (Entry<String, AttributeReadingStrategy> innerAttrEntry : innerStrategies.entrySet()) {
  43             List<XmlElement> childItem = complexElement.getChildElementsWithSameNamespace(
  44                     innerAttrEntry.getKey());
  45             recognisedChildren.addAll(childItem);
  46
  47             AttributeConfigElement resolvedInner = innerAttrEntry.getValue().readElement(childItem);
  48
  49             Object value = resolvedInner.getValue();
  50             if(value == null) {
  51                 value = resolvedInner.getDefaultValue();
  52             }
  53
  54             innerMap.put(innerAttrEntry.getKey(), value);
  55         }
  56
  57         complexElement.checkUnrecognisedElements(recognisedChildren);
  58
  59         return AttributeConfigElement.create(getNullableDefault(), innerMap);
  60     }
  61
  62 }