org.apache.tika.util.XMLDOMUtil Maven / Gradle / Ivy
/*
* 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.tika.util;
import java.util.HashMap;
import java.util.Map;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
public class XMLDOMUtil {
/**
* This grabs the attributes from a dom node and overwrites those values with those
* specified by the overwrite map.
*
* @param node node for building
* @param overwrite map of attributes to overwrite
* @return map of attributes
*/
public static Map mapifyAttrs(Node node, Map overwrite) {
Map map = new HashMap<>();
NamedNodeMap nnMap = node.getAttributes();
for (int i = 0; i < nnMap.getLength(); i++) {
Node attr = nnMap.item(i);
map.put(attr.getNodeName(), attr.getNodeValue());
}
if (overwrite != null) {
for (Map.Entry e : overwrite.entrySet()) {
map.put(e.getKey(), e.getValue());
}
}
return map;
}
/**
* Get an int value. Try the runtime attributes first and then back off to
* the document element. Throw a RuntimeException if the attribute is not
* found or if the value is not parseable as an int.
*
* @param attrName attribute name to find
* @param runtimeAttributes runtime attributes
* @param docElement correct element that should have specified attribute
* @return specified int value
*/
public static int getInt(String attrName, Map runtimeAttributes,
Node docElement) {
String stringValue = getStringValue(attrName, runtimeAttributes, docElement);
if (stringValue != null) {
try {
return Integer.parseInt(stringValue);
} catch (NumberFormatException e) {
//swallow
}
}
throw new RuntimeException("Need to specify a parseable int value in -- " + attrName +
" -- in commandline or in config file!");
}
/**
* Get a long value. Try the runtime attributes first and then back off to
* the document element. Throw a RuntimeException if the attribute is not
* found or if the value is not parseable as a long.
*
* @param attrName attribute name to find
* @param runtimeAttributes runtime attributes
* @param docElement correct element that should have specified attribute
* @return specified long value
*/
public static long getLong(String attrName, Map runtimeAttributes,
Node docElement) {
String stringValue = getStringValue(attrName, runtimeAttributes, docElement);
if (stringValue != null) {
try {
return Long.parseLong(stringValue);
} catch (NumberFormatException e) {
//swallow
}
}
throw new RuntimeException("Need to specify a \"long\" value in -- " + attrName +
" -- in commandline or in config file!");
}
private static String getStringValue(String attrName, Map runtimeAttributes,
Node docElement) {
String stringValue = runtimeAttributes.get(attrName);
if (stringValue == null) {
Node staleNode = docElement.getAttributes().getNamedItem(attrName);
if (staleNode != null) {
stringValue = staleNode.getNodeValue();
}
}
return stringValue;
}
}