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| package org.dom4j.util; |
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| import java.util.ArrayList; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import java.util.Map; |
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| import org.dom4j.Attribute; |
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| import org.dom4j.Element; |
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| import org.dom4j.Node; |
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| import org.dom4j.QName; |
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| import org.dom4j.tree.BackedList; |
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| import org.dom4j.tree.DefaultElement; |
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| public class IndexedElement extends DefaultElement { |
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| private Map elementIndex; |
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| private Map attributeIndex; |
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| public IndexedElement(String name) {
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| super(name);
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| } |
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| public IndexedElement(QName qname) {
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| super(qname);
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| } |
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| public IndexedElement(QName qname, int attributeCount) {
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| super(qname, attributeCount);
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| } |
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| public Attribute attribute(String name) {
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| return (Attribute) attributeIndex().get(name);
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| } |
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| public Attribute attribute(QName qName) {
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| return (Attribute) attributeIndex().get(qName);
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| } |
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| public Element element(String name) {
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| return asElement(elementIndex().get(name));
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| } |
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| public Element element(QName qName) {
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| return asElement(elementIndex().get(qName));
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| } |
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| public List elements(String name) {
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| return asElementList(elementIndex().get(name));
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| } |
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| public List elements(QName qName) {
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| return asElementList(elementIndex().get(qName));
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| } |
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| protected Element asElement(Object object) {
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| if (object instanceof Element) {
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| return (Element) object;
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| } else if (object != null) {
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| List list = (List) object;
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| if (list.size() >= 1) {
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| return (Element) list.get(0);
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| } |
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| } |
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| return null;
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| } |
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| protected List asElementList(Object object) {
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| if (object instanceof Element) {
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| return createSingleResultList(object);
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| } else if (object != null) {
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| List list = (List) object;
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| BackedList answer = createResultList();
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| for (int i = 0, size = list.size(); i < size; i++) {
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| answer.addLocal(list.get(i));
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| } |
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| return answer;
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| } |
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| return createEmptyList();
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| } |
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| protected Iterator asElementIterator(Object object) {
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| return asElementList(object).iterator();
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| } |
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| protected void addNode(Node node) {
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| super.addNode(node);
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| if ((elementIndex != null) && node instanceof Element) {
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| addToElementIndex((Element) node);
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| } else if ((attributeIndex != null) && node instanceof Attribute) {
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| addToAttributeIndex((Attribute) node);
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| } |
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| } |
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| protected boolean removeNode(Node node) {
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| if (super.removeNode(node)) {
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| if ((elementIndex != null) && node instanceof Element) {
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| removeFromElementIndex((Element) node);
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| } else if ((attributeIndex != null) && node instanceof Attribute) {
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| removeFromAttributeIndex((Attribute) node);
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| } |
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| return true;
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| } |
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| return false;
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| } |
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| protected Map attributeIndex() {
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| if (attributeIndex == null) {
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| attributeIndex = createAttributeIndex();
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| for (Iterator iter = attributeIterator(); iter.hasNext();) {
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| addToAttributeIndex((Attribute) iter.next());
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| } |
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| } |
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| return attributeIndex;
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| } |
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| protected Map elementIndex() {
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| if (elementIndex == null) {
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| elementIndex = createElementIndex();
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| for (Iterator iter = elementIterator(); iter.hasNext();) {
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| addToElementIndex((Element) iter.next());
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| } |
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| } |
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| return elementIndex;
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| } |
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| protected Map createAttributeIndex() {
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| Map answer = createIndex();
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| return answer;
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| } |
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| protected Map createElementIndex() {
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| Map answer = createIndex();
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| return answer;
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| } |
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| protected void addToElementIndex(Element element) {
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| QName qName = element.getQName();
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| String name = qName.getName();
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| addToElementIndex(qName, element);
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| addToElementIndex(name, element);
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| } |
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| protected void addToElementIndex(Object key, Element value) {
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| Object oldValue = elementIndex.get(key);
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| if (oldValue == null) {
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| elementIndex.put(key, value);
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| } else { |
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| if (oldValue instanceof List) {
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| List list = (List) oldValue;
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| list.add(value);
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| } else { |
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| List list = createList();
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| list.add(oldValue);
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| list.add(value);
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| elementIndex.put(key, list);
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| } |
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| } |
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| } |
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| protected void removeFromElementIndex(Element element) {
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| QName qName = element.getQName();
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| String name = qName.getName();
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| removeFromElementIndex(qName, element);
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| removeFromElementIndex(name, element);
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| } |
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| protected void removeFromElementIndex(Object key, Element value) {
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| Object oldValue = elementIndex.get(key);
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| if (oldValue instanceof List) {
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| List list = (List) oldValue;
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| list.remove(value);
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| } else { |
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| elementIndex.remove(key);
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| } |
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| } |
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| protected void addToAttributeIndex(Attribute attribute) {
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| QName qName = attribute.getQName();
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| String name = qName.getName();
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| addToAttributeIndex(qName, attribute);
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| addToAttributeIndex(name, attribute);
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| } |
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| protected void addToAttributeIndex(Object key, Attribute value) {
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| Object oldValue = attributeIndex.get(key);
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| if (oldValue != null) {
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| attributeIndex.put(key, value);
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| } |
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| } |
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| protected void removeFromAttributeIndex(Attribute attribute) {
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| QName qName = attribute.getQName();
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| String name = qName.getName();
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| removeFromAttributeIndex(qName, attribute);
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| removeFromAttributeIndex(name, attribute);
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| } |
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| protected void removeFromAttributeIndex(Object key, Attribute value) {
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| Object oldValue = attributeIndex.get(key);
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| if ((oldValue != null) && oldValue.equals(value)) {
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| attributeIndex.remove(key);
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| } |
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| } |
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| protected Map createIndex() {
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| return new HashMap();
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| } |
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| protected List createList() {
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| return new ArrayList();
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| } |
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| } |
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