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/*
* ============LICENSE_START=======================================================
* ONAP : ccsdk features
* ================================================================================
* Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
* All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*
*/
package org.onap.ccsdk.features.sdnr.wt.common.file;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class PomFile {
private Document xmlDoc;
public PomFile(InputStream is) throws ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
// documentBuilderFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
// documentBuilderFactory.setFeature(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES, false);
// documentBuilderFactory.setFeature(XMLInputFactory.SUPPORT_DTD, false);
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
this.xmlDoc = documentBuilder.parse(is);
}
public String getProperty(String key) {
Node props = findChild("properties", this.xmlDoc.getDocumentElement());
if (props != null) {
Node prop = findChild(key, props);
if (prop != null) {
return getTextValue(prop);
}
}
return null;
}
public String getParentVersion() {
Node parent = findChild("parent", this.xmlDoc.getDocumentElement());
if (parent != null) {
Node version = findChild("version", parent);
if (version != null) {
return getTextValue(version);
}
}
return null;
}
private static String getTextValue(Node node) {
StringBuffer textValue = new StringBuffer();
for (int i = 0, length = node.getChildNodes().getLength(); i < length; i++) {
Node c = node.getChildNodes().item(i);
if (c.getNodeType() == Node.TEXT_NODE) {
textValue.append(c.getNodeValue());
}
}
return textValue.toString().trim();
}
private Node findChild(String name, Node root) {
List<Element> childs = getChildElementNodes(root);
for (Element n : childs) {
if (name.equals(n.getNodeName())) {
return n;
}
}
return null;
}
/**
* get all child nodes with type ELEMENT_NODE back in a list
*
* @param node parent node
* @return List with child nodes
*/
private static List<Element> getChildElementNodes(Node node) {
List<Element> res = new ArrayList<>();
NodeList childs = node.getChildNodes();
Node item;
//System.out.println("Query node "+node.getNodeName());
for (int n = 0; n < childs.getLength(); n++) {
item = childs.item(n);
//System.out.println(node.getNodeName()+"-"+item.getNodeName()+" "+item.getNodeType());
if (item.getNodeType() == Node.ELEMENT_NODE) {
res.add((Element) childs.item(n));
}
}
return res;
}
}
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