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java.lang.Objectorg.jaxen.Context
public class Context
Wrapper around implementation-specific objects used as the context of an expression evaluation.
NOTE: This class is not typically used directly, but is exposed for writers of implementation-specific XPath packages.
The Context
bundles utilities together
for evaluation of the expression. It wraps the provided
objects for ease-of-passage through the expression
AST.
ContextSupport
,
BaseXPath
,
XPath for dom4j
,
XPath for JDOM
,
XPath for W3C DOM
,
Serialized FormField Summary | |
---|---|
private ContextSupport |
contextSupport
Context-support |
private java.util.List |
nodeSet
Context node-set |
private int |
position
Current context position |
private static long |
serialVersionUID
|
private int |
size
Current context size |
Constructor Summary | |
---|---|
Context(ContextSupport contextSupport)
Create a new context. |
Method Summary | |
---|---|
Context |
duplicate()
Create a type-safe shallow copy. |
ContextSupport |
getContextSupport()
Retrieve the ContextSupport . |
Function |
getFunction(java.lang.String namespaceURI,
java.lang.String prefix,
java.lang.String localName)
Retrieve a Function . |
Navigator |
getNavigator()
Retrieve the current Navigator . |
java.util.List |
getNodeSet()
Retrieve the context node-set. |
int |
getPosition()
Retrieve current position in the context node-set. |
int |
getSize()
Retrieve the size of the current context node-set. |
java.lang.Object |
getVariableValue(java.lang.String namespaceURI,
java.lang.String prefix,
java.lang.String localName)
Retrieve a variable value. |
void |
setContextSupport(ContextSupport contextSupport)
Set the ContextSupport . |
void |
setNodeSet(java.util.List nodeSet)
Set the context node-set, and sets the current context size to the size of this node-set. |
void |
setPosition(int position)
Set the current position in the context node-set. |
void |
setSize(int size)
Set the current size in the context node-set. |
java.lang.String |
translateNamespacePrefixToUri(java.lang.String prefix)
Translate a namespace prefix to its URI. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
private static final long serialVersionUID
private ContextSupport contextSupport
private java.util.List nodeSet
private int size
private int position
Constructor Detail |
---|
public Context(ContextSupport contextSupport)
contextSupport
- the context-supportMethod Detail |
---|
public void setNodeSet(java.util.List nodeSet)
Set the context node-set, and sets the current context size to the size of this node-set.
The actual list is stored in this object. A copy is not made. This list should not be modified in other code after calling this method.
After invoking this method, the client should immediately call
setSize
and setPosition
.
nodeSet
- the context node-setpublic java.util.List getNodeSet()
public void setContextSupport(ContextSupport contextSupport)
ContextSupport
.
contextSupport
- the context-supportpublic ContextSupport getContextSupport()
ContextSupport
.
public Navigator getNavigator()
Navigator
.
public java.lang.String translateNamespacePrefixToUri(java.lang.String prefix)
prefix
- the prefix
public java.lang.Object getVariableValue(java.lang.String namespaceURI, java.lang.String prefix, java.lang.String localName) throws UnresolvableException
namespaceURI
- the function namespace URIprefix
- the function prefixlocalName
- the function name
UnresolvableException
- if unable to locate a bound variablepublic Function getFunction(java.lang.String namespaceURI, java.lang.String prefix, java.lang.String localName) throws UnresolvableException
Function
.
namespaceURI
- the function namespace URIprefix
- the function prefixlocalName
- the function name
UnresolvableException
- if unable to locate a bound functionpublic void setSize(int size)
size
- the sizepublic int getSize()
public void setPosition(int position)
position
- the positionpublic int getPosition()
public Context duplicate()
|
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