mirror of
https://github.com/moparisthebest/JdbcMapper
synced 2024-08-13 16:53:55 -04:00
194 lines
6.0 KiB
Java
194 lines
6.0 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Header:$
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*/
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package org.apache.beehive.controls.system.ejb.internal;
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import java.util.ArrayList;
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import java.util.List;
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import org.w3c.dom.Attr;
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import org.w3c.dom.Element;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import org.w3c.dom.Text;
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/**
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* Some simple DOM utility methods.
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*/
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final class DomUtils {
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/**
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* <p>Returns the first child element with the given name. Returns
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* <code>null</code> if not found.</p>
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*
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* @param parent parent element
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* @param name name of the child element
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* @return child element
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*/
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static Element getChildElementByName(Element parent, String name) {
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NodeList children = parent.getChildNodes();
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for (int i = 0; i < children.getLength(); i++) {
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Node node = children.item(i);
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if (node.getNodeType() == Node.ELEMENT_NODE) {
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Element element = (Element) node;
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if (element.getTagName().equals(name)) {
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return element;
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}
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}
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}
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return null;
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}
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/**
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* <p>Returns a list of child elements with the given
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* name. Returns an empty list if there are no such child
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* elements.</p>
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*
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* @param parent parent element
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* @param name name of the child element
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* @return child elements
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*/
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static List getChildElementsByName(Element parent, String name) {
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List elements = new ArrayList();
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NodeList children = parent.getChildNodes();
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for (int i = 0; i < children.getLength(); i++) {
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Node node = children.item(i);
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if (node.getNodeType() == Node.ELEMENT_NODE) {
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Element element = (Element) node;
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if (element.getTagName().equals(name)) {
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elements.add(element);
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}
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}
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}
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return elements;
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}
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/**
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* <p>Returns the text value of a child element. Returns
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* <code>null</code> if there is no child element found.</p>
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*
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* @param parent parent element
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* @param name name of the child element
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* @return text value
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*/
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static String getChildElementText(Element parent, String name) {
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// Get children
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List list = DomUtils.getChildElementsByName(parent, name);
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if (list.size() == 1) {
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Element child = (Element) list.get(0);
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StringBuffer buf = new StringBuffer();
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NodeList children = child.getChildNodes();
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for (int i = 0; i < children.getLength(); i++) {
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Node node = children.item(i);
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if (node.getNodeType() == Node.TEXT_NODE ||
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node.getNodeType() == Node.CDATA_SECTION_NODE) {
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Text text = (Text) node;
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buf.append(text.getData().trim());
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}
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}
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return buf.toString();
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} else {
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return null;
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}
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}
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/**
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* <p>Returns the text value of a child element. Returns
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* <code>null</code> if there is no child element found.</p>
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*
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* @param element element
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* @return text value
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*/
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static String getElementText(Element element) {
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StringBuffer buf = new StringBuffer();
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NodeList children = element.getChildNodes();
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for (int i = 0; i < children.getLength(); i++) {
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Node node = children.item(i);
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if (node.getNodeType() == Node.TEXT_NODE ||
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node.getNodeType() == Node.CDATA_SECTION_NODE) {
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Text text = (Text) node;
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buf.append(text.getData().trim());
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}
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}
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return buf.toString();
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}
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/**
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* <p>Returns an array of text values of a child element. Returns
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* <code>null</code> if there is no child element found.</p>
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*
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* @param parent parent element
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* @param name name of the child element
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* @return text value
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*/
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static String[] getChildElementTextArr(Element parent, String name) {
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// Get all the elements
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List children = getChildElementsByName(parent, name);
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String str[] = new String[children.size()];
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for (int i = 0; i < children.size(); i++) {
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Node child = (Node) children.get(i);
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StringBuffer buf = new StringBuffer();
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NodeList nodes = child.getChildNodes();
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for (int j = 0; j < nodes.getLength(); j++) {
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Node node = nodes.item(j);
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if (node.getNodeType() == Node.TEXT_NODE ||
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node.getNodeType() == Node.CDATA_SECTION_NODE) {
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Text text = (Text) node;
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buf.append(text.getData().trim());
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}
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}
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str[i] = buf.toString();
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}
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return str;
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}
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/**
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* <p>Retutns the value of the named attribute of the given
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* element. If there is no such attribute, returns null.</p>
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*
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* @param element element
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* @param name name
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* @return value
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*/
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static String getAttributeValue(Element element, String name) {
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Attr attribute = element.getAttributeNode(name);
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if (attribute == null) {
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return null;
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} else {
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return attribute.getValue();
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}
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}
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}
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