X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/DOMUtils.java?ds=sidebyside diff --git a/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/DOMUtils.java b/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/DOMUtils.java deleted file mode 100644 index 08a54a8..0000000 --- a/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/DOMUtils.java +++ /dev/null @@ -1,280 +0,0 @@ -package org.apache.lucene.xmlparser; -import java.io.Reader; - -import javax.xml.parsers.DocumentBuilder; -import javax.xml.parsers.DocumentBuilderFactory; - -import org.w3c.dom.Document; -import org.w3c.dom.Element; -import org.w3c.dom.Node; -import org.xml.sax.InputSource; -/** - * 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. - */ - -/** - * - */ -public class DOMUtils -{ - public static Element getChildByTagOrFail(Element e, String name) throws ParserException - { - Element kid = getChildByTagName(e, name); - if (null == kid) - { - throw new ParserException(e.getTagName() + " missing \"" + name - + "\" child element"); - } - return kid; - } - - public static Element getFirstChildOrFail(Element e) throws ParserException - { - Element kid = getFirstChildElement(e); - if (null == kid) - { - throw new ParserException(e.getTagName() - + " does not contain a child element"); - } - return kid; - } - - public static String getAttributeOrFail(Element e, String name) throws ParserException - { - String v = e.getAttribute(name); - if (null == v) - { - throw new ParserException(e.getTagName() + " missing \"" + name - + "\" attribute"); - } - return v; - } - public static String getAttributeWithInheritanceOrFail(Element e, String name) throws ParserException - { - String v = getAttributeWithInheritance(e, name); - if (null == v) - { - throw new ParserException(e.getTagName() + " missing \"" + name - + "\" attribute"); - } - return v; - } - public static String getNonBlankTextOrFail(Element e) throws ParserException - { - String v = getText(e); - if (null != v) - v = v.trim(); - if (null == v || 0 == v.length()) - { - throw new ParserException(e.getTagName() + " has no text"); - } - return v; - } - - - - - - - /* Convenience method where there is only one child Element of a given name */ - public static Element getChildByTagName(Element e, String name) - { - for (Node kid = e.getFirstChild(); kid != null; kid = kid.getNextSibling()) - { - if( (kid.getNodeType()==Node.ELEMENT_NODE) && (name.equals(kid.getNodeName())) ) - { - return (Element)kid; - } - } - return null; - } - - /** - * Returns an attribute value from this node, or first parent node with this attribute defined - * @param element - * @param attributeName - * @return A non-zero-length value if defined, otherwise null - */ - public static String getAttributeWithInheritance(Element element, String attributeName) - { - String result=element.getAttribute(attributeName); - if( (result==null)|| ("".equals(result) ) ) - { - Node n=element.getParentNode(); - if((n==element)||(n==null)) - { - return null; - } - if(n instanceof Element) - { - Element parent=(Element) n; - return getAttributeWithInheritance(parent,attributeName); - } - return null; //we reached the top level of the document without finding attribute - } - return result; - } - - - - /* Convenience method where there is only one child Element of a given name */ - public static String getChildTextByTagName(Element e, String tagName) - { - Element child=getChildByTagName(e,tagName); - if(child!=null) - { - return getText(child); - } - return null; - } - - /* Convenience method to append a new child with text*/ - public static Element insertChild(Element parent, String tagName, String text) - { - Element child = parent.getOwnerDocument().createElement(tagName); - parent.appendChild(child); - if(text!=null) - { - child.appendChild(child.getOwnerDocument().createTextNode(text)); - } - return child; - } - - public static String getAttribute(Element element, String attributeName, String deflt) - { - String result=element.getAttribute(attributeName); - if( (result==null)|| ("".equals(result) ) ) - { - return deflt; - } - return result; - } - public static float getAttribute(Element element, String attributeName, float deflt) - { - String result=element.getAttribute(attributeName); - if( (result==null)|| ("".equals(result) ) ) - { - return deflt; - } - return Float.parseFloat(result); - } - - public static int getAttribute(Element element, String attributeName, int deflt) - { - String result=element.getAttribute(attributeName); - if( (result==null)|| ("".equals(result) ) ) - { - return deflt; - } - return Integer.parseInt(result); - } - - public static boolean getAttribute(Element element, String attributeName, - boolean deflt) - { - String result = element.getAttribute(attributeName); - if ((result == null) || ("".equals(result))) - { - return deflt; - } - return Boolean.valueOf(result).booleanValue(); - } - - /* Returns text of node and all child nodes - without markup */ - //MH changed to Node from Element 25/11/2005 - public static String getText(Node e) - { - StringBuilder sb=new StringBuilder(); - getTextBuffer(e, sb); - return sb.toString(); - } - - public static Element getFirstChildElement(Element element) - { - for (Node kid = element.getFirstChild(); kid != null; kid = kid - .getNextSibling()) - { - if (kid.getNodeType() == Node.ELEMENT_NODE) - { - return (Element) kid; - } - } - return null; - } - - private static void getTextBuffer(Node e, StringBuilder sb) - { - for (Node kid = e.getFirstChild(); kid != null; kid = kid.getNextSibling()) - { - switch(kid.getNodeType()) - { - case Node.TEXT_NODE: - { - sb.append(kid.getNodeValue()); - break; - } - case Node.ELEMENT_NODE: - { - getTextBuffer(kid, sb); - break; - } - case Node.ENTITY_REFERENCE_NODE: - { - getTextBuffer(kid, sb); - break; - } - } - } - } - - /** - * Helper method to parse an XML file into a DOM tree, given a reader. - * @param is reader of the XML file to be parsed - * @return an org.w3c.dom.Document object - */ - public static Document loadXML(Reader is) - { - - DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); - DocumentBuilder db = null; - - try - { - db = dbf.newDocumentBuilder(); - } - catch (Exception se) - { - throw new RuntimeException("Parser configuration error", se); - } - - // Step 3: parse the input file - org.w3c.dom.Document doc = null; - try - { - doc = db.parse(new InputSource(is)); - //doc = db.parse(is); - } - catch (Exception se) - { - throw new RuntimeException("Error parsing file:" + se, se); - } - - return doc; - } -} - - -