public class Context
extends java.lang.Object
implements java.io.Serializable
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.
Modifier and Type | Field and Description |
---|---|
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 and Description |
---|
Context(ContextSupport contextSupport)
Create a new context.
|
Modifier and Type | Method and Description |
---|---|
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.
|
private static final long serialVersionUID
private ContextSupport contextSupport
private java.util.List nodeSet
private int size
private int position
public Context(ContextSupport contextSupport)
contextSupport
- the context-supportpublic 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 prefixpublic 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 nameUnresolvableException
- 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 nameUnresolvableException
- 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()