Remove yang-test
[controller.git] / opendaylight / config / config-manager-facade-xml / src / main / java / org / opendaylight / controller / config / facade / xml / mapping / attributes / fromxml / AbstractAttributeReadingStrategy.java
1 /*
2  * Copyright (c) 2015, 2017 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.config.facade.xml.mapping.attributes.fromxml;
10
11 import java.util.List;
12 import org.opendaylight.controller.config.util.xml.DocumentedException;
13 import org.opendaylight.controller.config.util.xml.XmlElement;
14
15 public abstract class AbstractAttributeReadingStrategy implements AttributeReadingStrategy {
16
17     private final String nullableDefault;
18
19     public AbstractAttributeReadingStrategy(final String nullableDefault) {
20         this.nullableDefault = nullableDefault;
21     }
22
23     public String getNullableDefault() {
24         return nullableDefault;
25     }
26
27     @Override
28     public AttributeConfigElement readElement(final List<XmlElement> configNodes) throws DocumentedException {
29         if (configNodes.isEmpty()) {
30             return AttributeConfigElement.createNullValue(postprocessNullableDefault(nullableDefault));
31         }
32         return readElementHook(configNodes);
33     }
34
35     abstract AttributeConfigElement readElementHook(List<XmlElement> configNodes) throws DocumentedException;
36
37     @SuppressWarnings("checkstyle:hiddenField")
38     protected Object postprocessNullableDefault(final String nullableDefault) {
39         return nullableDefault;
40     }
41 }

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Linux Foundation and OpenDaylight are registered trademarks of the Linux Foundation.
Linux is a registered trademark of Linus Torvalds.