public boolean booleanValueOf(Object context)
Retrieve a boolean-value interpretation of this XPath expression when
evaluated against a given context.


The boolean-value of the expression is determined per the
boolean(..) core function as defined in the XPath
specification. This means that an expression that selects zero nodes will
return false, while an expression that selects
one-or-more nodes will return true.

 public Object evaluate(Object context)

evaluate evaluates an XPath expression and returns the
result as an Object . The object returned can either be a List  of Node instances, a Node instance, a String  or a Number instance depending on the XPath expression.

 public FunctionContext getFunctionContext()
DOCUMENT ME!

 public NamespaceContext getNamespaceContext()
DOCUMENT ME!

 public String getText()

getText will return the textual version of the XPath
expression.

 public VariableContext getVariableContext()
DOCUMENT ME!

 public boolean matches(Node node)

matches returns true if the given node matches the XPath
expression. To be more precise when evaluating this XPath expression on
the given node the result set must include the node.

 public Number numberValueOf(Object context)

numberValueOf evaluates an XPath expression and returns
the numeric value of the XPath expression if the XPath expression results
is a number, or null if the result is not a number.

 public List selectNodes(Object context)

selectNodes performs this XPath expression on the given
Node or List of Node s instances appending all
the results together into a single list.

 public List selectNodes(Object context,
    XPath sortXPath)

selectNodes evaluates the XPath expression on the given
Node or List of Node s and returns the result as
a List of Node s sorted by the sort XPath
expression.

 public List selectNodes(Object context,
    XPath sortXPath,
    boolean distinct)

selectNodes evaluates the XPath expression on the given
Node or List of Node s and returns the result as
a List of Node s sorted by the sort XPath
expression.

 public Object selectObject(Object context)Deprecated! please -  use evaluate(Object) instead. WILL BE REMOVED IN
dom4j-1.6 !!


selectObject evaluates an XPath expression and returns the
result as an Object . The object returned can either be a List  of Node instances, a Node instance, a String  or a Number instance depending on the XPath expression.

 public Node selectSingleNode(Object context)

selectSingleNode evaluates this XPath expression on the
given Node or List of Node s and returns the
result as a single Node instance.

 public  void setFunctionContext(FunctionContext functionContext)
Sets the function context to be used when evaluating XPath expressions

 public  void setNamespaceContext(NamespaceContext namespaceContext)
Sets the namespace context to be used when evaluating XPath expressions

 public  void setNamespaceURIs(Map map)

Sets the current NamespaceContext from a Map where the keys are the
String namespace prefixes and the values are the namespace URIs.



For example:

Map uris = new HashMap();
uris.put("SOAP-ENV", "http://schemas.xmlsoap.org/soap/envelope/");
uris.put("m", "urn:xmethodsBabelFish");
XPath xpath = document
.createXPath("SOAP-ENV:Envelope/SOAP-ENV:Body/m:BabelFish");
xpath.setNamespaceURIs(uris);
Node babelfish = xpath.selectSingleNode(document);

 public  void setVariableContext(VariableContext variableContext)
Sets the variable context to be used when evaluating XPath expressions

 public  void sort(List list)

sort sorts the given List of Nodes using this XPath
expression as a java.util.Comparator .

 public  void sort(List list,
    boolean distinct)

sort sorts the given List of Nodes using this XPath
expression as a java.util.Comparator and optionally removing
duplicates.

 public String valueOf(Object context)

valueOf evaluates this XPath expression and returns the
textual representation of the results using the XPath string() function.