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| package org.dom4j.xpath; |
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| import java.io.Serializable; |
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| import java.util.Collections; |
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| import java.util.Comparator; |
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| import java.util.HashMap; |
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| import java.util.HashSet; |
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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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| |
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| import org.dom4j.InvalidXPathException; |
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| import org.dom4j.Node; |
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| import org.dom4j.NodeFilter; |
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| import org.dom4j.XPathException; |
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| |
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| import org.jaxen.FunctionContext; |
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| import org.jaxen.JaxenException; |
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| import org.jaxen.NamespaceContext; |
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| import org.jaxen.SimpleNamespaceContext; |
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| import org.jaxen.VariableContext; |
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| import org.jaxen.XPath; |
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| import org.jaxen.dom4j.Dom4jXPath; |
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| public class DefaultXPath implements org.dom4j.XPath, NodeFilter, Serializable { |
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| private String text; |
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| private XPath xpath; |
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| private NamespaceContext namespaceContext; |
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592
| public DefaultXPath(String text) throws InvalidXPathException {
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| this.text = text;
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| this.xpath = parse(text);
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| } |
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| public String toString() {
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| return "[XPath: " + xpath + "]";
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| } |
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0
| public String getText() {
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| return text;
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| } |
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| public FunctionContext getFunctionContext() {
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| return xpath.getFunctionContext();
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| } |
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| public void setFunctionContext(FunctionContext functionContext) {
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| xpath.setFunctionContext(functionContext);
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| } |
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| public NamespaceContext getNamespaceContext() {
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| return namespaceContext;
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| } |
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| public void setNamespaceURIs(Map map) {
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| setNamespaceContext(new SimpleNamespaceContext(map));
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| } |
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| public void setNamespaceContext(NamespaceContext namespaceContext) {
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| this.namespaceContext = namespaceContext;
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| xpath.setNamespaceContext(namespaceContext);
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| } |
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| public VariableContext getVariableContext() {
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| return xpath.getVariableContext();
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| } |
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| public void setVariableContext(VariableContext variableContext) {
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| xpath.setVariableContext(variableContext);
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| } |
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| public Object evaluate(Object context) {
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| try {
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| setNSContext(context);
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| List answer = xpath.selectNodes(context);
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| if ((answer != null) && (answer.size() == 1)) {
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| return answer.get(0);
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| } |
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| return answer;
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| } catch (JaxenException e) { |
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| handleJaxenException(e);
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| return null;
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| } |
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| } |
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| public Object selectObject(Object context) {
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| return evaluate(context);
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| } |
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| public List selectNodes(Object context) {
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| try {
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| setNSContext(context);
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| return xpath.selectNodes(context);
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| } catch (JaxenException e) { |
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| handleJaxenException(e);
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| return Collections.EMPTY_LIST;
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| } |
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| } |
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| public List selectNodes(Object context, org.dom4j.XPath sortXPath) {
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| List answer = selectNodes(context);
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| sortXPath.sort(answer);
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| return answer;
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| } |
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| public List selectNodes(Object context, org.dom4j.XPath sortXPath,
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| boolean distinct) { |
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| List answer = selectNodes(context);
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| sortXPath.sort(answer, distinct);
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| return answer;
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| } |
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| public Node selectSingleNode(Object context) {
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| try {
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| setNSContext(context);
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| Object answer = xpath.selectSingleNode(context);
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| if (answer instanceof Node) {
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| return (Node) answer;
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| } |
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| if (answer == null) {
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| return null;
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| } |
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| throw new XPathException("The result of the XPath expression is "
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| + "not a Node. It was: " + answer + " of type: " |
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| + answer.getClass().getName()); |
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| } catch (JaxenException e) { |
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| handleJaxenException(e);
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| return null;
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| } |
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| } |
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2151
| public String valueOf(Object context) {
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| try {
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| setNSContext(context);
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| return xpath.stringValueOf(context);
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| } catch (JaxenException e) { |
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| handleJaxenException(e);
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| return "";
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| } |
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| } |
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| public Number numberValueOf(Object context) {
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| try {
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| setNSContext(context);
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| return xpath.numberValueOf(context);
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| } catch (JaxenException e) { |
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| handleJaxenException(e);
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| return null;
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| } |
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| } |
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| public boolean booleanValueOf(Object context) {
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| try {
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| setNSContext(context);
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| return xpath.booleanValueOf(context);
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| } catch (JaxenException e) { |
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| handleJaxenException(e);
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| return false;
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| } |
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| } |
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| public void sort(List list) {
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| sort(list, false);
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| } |
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| public void sort(List list, boolean distinct) {
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| if ((list != null) && !list.isEmpty()) {
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| int size = list.size();
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| HashMap sortValues = new HashMap(size);
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| for (int i = 0; i < size; i++) {
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| Object object = list.get(i);
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| if (object instanceof Node) {
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| Node node = (Node) object;
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| Object expression = getCompareValue(node);
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| sortValues.put(node, expression);
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| } |
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| } |
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| sort(list, sortValues);
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| if (distinct) {
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| removeDuplicates(list, sortValues);
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| } |
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| } |
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| } |
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| public boolean matches(Node node) {
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| try {
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| setNSContext(node);
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| List answer = xpath.selectNodes(node);
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| if ((answer != null) && (answer.size() > 0)) {
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| Object item = answer.get(0);
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| if (item instanceof Boolean) {
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| return ((Boolean) item).booleanValue();
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| } |
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6
| return answer.contains(node);
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| } |
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6
| return false;
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| } catch (JaxenException e) { |
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0
| handleJaxenException(e);
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0
| return false;
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| } |
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| } |
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2
| protected void sort(List list, final Map sortValues) {
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2
| Collections.sort(list, new Comparator() {
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297 |
9366
| public int compare(Object o1, Object o2) {
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298 |
9366
| o1 = sortValues.get(o1);
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299 |
9366
| o2 = sortValues.get(o2);
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| |
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301 |
9366
| if (o1 == o2) {
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978
| return 0;
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8388
| } else if (o1 instanceof Comparable) {
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304 |
8388
| Comparable c1 = (Comparable) o1;
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| |
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306 |
8388
| return c1.compareTo(o2);
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0
| } else if (o1 == null) {
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| return 1;
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0
| } else if (o2 == null) {
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| return -1;
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| } else { |
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| return o1.equals(o2) ? 0 : (-1);
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| } |
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| } |
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| }); |
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| } |
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1
| protected void removeDuplicates(List list, Map sortValues) {
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330 |
1
| HashSet distinctValues = new HashSet();
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332 |
1
| for (Iterator iter = list.iterator(); iter.hasNext();) {
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333 |
979
| Object node = iter.next();
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334 |
979
| Object value = sortValues.get(node);
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| |
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336 |
979
| if (distinctValues.contains(value)) {
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337 |
956
| iter.remove();
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| } else { |
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339 |
23
| distinctValues.add(value);
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| } |
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| } |
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| } |
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352 |
1958
| protected Object getCompareValue(Node node) {
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353 |
1958
| return valueOf(node);
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| } |
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356 |
592
| protected static XPath parse(String text) {
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357 |
592
| try {
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358 |
592
| return new Dom4jXPath(text);
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| } catch (JaxenException e) { |
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360 |
4
| throw new InvalidXPathException(text, e.getMessage());
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| } catch (Throwable t) { |
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362 |
0
| throw new InvalidXPathException(text, t);
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| } |
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| } |
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365 |
| |
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366 |
2570
| protected void setNSContext(Object context) {
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367 |
2570
| if (namespaceContext == null) {
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368 |
2561
| xpath.setNamespaceContext(DefaultNamespaceContext.create(context));
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| } |
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| } |
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1
| protected void handleJaxenException(JaxenException exception)
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| throws XPathException { |
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374 |
1
| throw new XPathException(text, exception);
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| } |
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| } |
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