XPathEngine (EclipseLink JPA 3.0.4 API)

java.lang.Object
- org.eclipse.persistence.internal.jpa.deployment.xml.parser.XPathEngine

```
public class XPathEngine
extends Object
```
INTERNAL Utility class for finding XML nodes using XPath expressions.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static XPathEngine`	`getInstance()`	Return the `XPathEngine` singleton.
`NodeList`	`selectNodes(Node contextNode, String[] xPathFragments)`	Execute the XPath statement relative to the context node.
`Node`	`selectSingleNode(Node contextNode, String[] xPathFragments)`	Execute the XPath statement relative to the context node.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getInstance
```
public static XPathEngine getInstance()
```
    Return the XPathEngine singleton.
  - selectSingleNode
```
public Node selectSingleNode(Node contextNode,
                             String[] xPathFragments)
```
    Execute the XPath statement relative to the context node.
    
    Parameters:
    
    contextNode - the node relative to which the XPath statement will be executed
    
    Returns:
    
    the first node located matching the XPath statement
    
    Throws:
    
    XMLPlatformException
  - selectNodes
```
public NodeList selectNodes(Node contextNode,
                            String[] xPathFragments)
```
    Execute the XPath statement relative to the context node.
    
    Parameters:
    
    contextNode - the node relative to which the XPath statement will be executed
    
    Returns:
    
    a list of nodes matching the XPath statement
    
    Throws:
    
    XMLPlatformException