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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.core.bridge;
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import java.util.Collections;
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import java.util.Iterator;
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import org.jbind.util.collection.UnsynchronizedStack;
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import org.jbind.xml.base.INamespaces;
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import org.jbind.xml.core.data.IAnySimpleTypeData;
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import org.jbind.xml.core.data.IAnyTypeData;
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import org.jbind.xml.core.data.ISimpleData;
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import org.jbind.xml.msg.XmlException;
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public class EqualsVisitor implements IDataImplVisitor {
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private UnsynchronizedStack myIters = null;
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private boolean myEquals = true;
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public EqualsVisitor() {}
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public void visitElementImplStart(IElementImpl anImpl) {
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if (!myEquals) {
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return;
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}
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Iterator i = (Iterator)myIters.peek();
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if (!i.hasNext()) {
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myEquals = false;
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return;
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}
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Object o = i.next();
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myEquals = o instanceof IElementImpl;
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if (!myEquals) {
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return;
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}
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IElementImpl impl2 = (IElementImpl)o;
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myEquals = anImpl.getNamespace().equals(impl2.getNamespace()) && anImpl.getPartName().equals(impl2.getPartName());
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myEquals &= attributesEquals(anImpl, impl2);
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myEquals &= attributesEquals(impl2, anImpl);
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if (!myEquals) {
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return;
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}
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IAnyTypeData d1 = anImpl.getData();
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IAnyTypeData d2 = impl2.getData();
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if ((d1 == null) && (d2 == null)) {
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myEquals = anImpl.getTextContent().equals(impl2.getTextContent());
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} else if ((d1 != null) && (d2 != null)) {
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if (d1.getType_().isSimple()) {
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myEquals = ((ISimpleData)d1).simpleStorageValueEquals(d2);
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} else if (d2.getType_().isSimple()) {
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myEquals = false;
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}
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} else {
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myEquals = false;
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}
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if (!myEquals) {
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return;
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}
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myIters.push(anImpl.iterChildren());
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}
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public void visitElementImplEnd(IElementImpl anImpl) {
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if (!myEquals) {
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return;
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}
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Iterator i = (Iterator)myIters.pop();
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myEquals = !i.hasNext();
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}
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public void visitTextImpl(ITextImpl anImpl) {
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if (!myEquals) {
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return;
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}
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Iterator i = (Iterator)myIters.peek();
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myEquals = i.hasNext();
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if (myEquals) {
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Object o = i.next();
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myEquals = o instanceof ITextImpl;
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if (myEquals) {
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ITextImpl impl2 = (ITextImpl)o;
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myEquals = anImpl.getTextContent().equals(impl2.getTextContent());
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}
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}
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}
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private boolean attributesEquals(IElementImpl anImpl1, IElementImpl anImpl2) {
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for (Iterator i = anImpl1.iterAttributeImpls(); i.hasNext(); ) {
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IAttributeImpl a1 = (IAttributeImpl)i.next();
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if (INamespaces.XML_SCHEMA_INSTANCE.equals(a1.getNamespace())) {
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continue;
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}
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IAttributeImpl a2 = anImpl2.getAttributeImpl(a1.getNamespace(), a1.getPartName());
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if (null == a2) {
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return false;
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}
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IAnySimpleTypeData d1 = (IAnySimpleTypeData)a1.getData();
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IAnySimpleTypeData d2 = (IAnySimpleTypeData)a2.getData();
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if ((d1 == null) && (d2 == null)) {
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String t1 = a1.getTextContent();
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String t2 = a2.getTextContent();
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if (!t1.equals(t2)) {
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return false;
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}
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} else if ((d1 != null) && (d2 != null)) {
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if (!d1.simpleStorageValueEquals(d2)) {
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return false;
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}
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} else {
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return false;
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}
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}
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return true;
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}
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public boolean equals(IElementImpl anImpl1, IElementImpl anImpl2) throws XmlException {
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myIters = new UnsynchronizedStack();
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myIters.push(Collections.singletonList(anImpl2).iterator());
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myEquals = true;
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anImpl1.accept(this);
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myIters = null;
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return myEquals;
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}
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}
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