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/*
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* JBind
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*
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* Copyright (c) by Stefan Wachter. All rights reserved.
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*
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* Usage, modification, and redistribution is subject to license terms that are
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* available at 'http://www.jbind.org'. The JBind license is like the
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* 'Apache Software License V 1.1'.
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*/
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package org.jbind.xml.base;
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import java.util.Map;
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/**
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* Represents a qualified name.
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*/
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public class QName implements IQName {
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/**
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* Gets the local part of a QName.
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*
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* @param aQName <i>(required)</i>.
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* @return <i>(required)</i>.
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*/
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public static final String getLocalPart(String aQName) {
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int idx = aQName.lastIndexOf(':');
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return (idx > 0) ? aQName.substring(idx + 1) : aQName;
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}
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/**
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* Creates a QName.
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*
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* @param aQName <i>(optional)</i>.
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* @param aPrefixToNamespaceMapping <i>(required)</i>.
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* @return <i>(optional)</i>. If the provided QName does not satisfied the
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* syntactic constraints of QNames or the namespace could not be determined
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* then <code>null</code> is returned.
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*/
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public static final QName create(String aQName, Map aPrefixToNamespaceMapping) {
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QName res = null;
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if (StringUtil.isValidQName(aQName)) {
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int idx = aQName.indexOf(':');
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String prefix = null;
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String localName;
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if (idx >= 0) {
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prefix = aQName.substring(0, idx);
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localName = aQName.substring(idx + 1);
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} else {
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prefix = "";
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localName = aQName;
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}
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String namespace = (String)aPrefixToNamespaceMapping.get(prefix);
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if (namespace == null) {
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return null;
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}
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res = new QName(prefix, localName, namespace);
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}
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return res;
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}
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private String myPrefix = null;
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private String myLocalPart = null;
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protected String myNamespace = null;
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public String getPrefix() {
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return myPrefix;
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}
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public String getLocalPart() {
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return myLocalPart;
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}
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public String getNamespace() {
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return myNamespace;
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}
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protected QName(String aPrefix, String aLocalName, String aNamespace) {
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myPrefix = aPrefix;
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myLocalPart = aLocalName;
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myNamespace = aNamespace;
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}
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public String toString() {
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if (null == myPrefix) {
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return "?:" + myLocalPart;
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}
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return ("".equals(myPrefix) ? "" : myPrefix + ":") + myLocalPart;
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}
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public final boolean equals(Object anObject) {
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boolean res = anObject instanceof IQName;
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if (res) {
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IQName qn = (IQName)anObject;
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res = myNamespace.equals(qn.getNamespace()) && myLocalPart.equals(qn.getLocalPart());
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}
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return res;
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}
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public final int hashCode() {
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return myNamespace.hashCode() + myLocalPart.hashCode();
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}
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}
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