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java.lang.Objectorg.jaxen.SimpleVariableContext
Simple default implementation for VariableContext.
This is a simple table-based key-lookup implementation
for VariableContext which can be programmatically
extended by setting additional variables.
| Constructor Summary | |
SimpleVariableContext()
Construct. |
|
| Method Summary | |
Object |
getVariableValue(String namespaceURI,
String prefix,
String localName)
An implementation should return the value of an XPath variable based on the namespace URI and local name of the variable-reference expression. |
void |
setVariableValue(String localName,
Object value)
Set the value associated with a variable. |
void |
setVariableValue(String namespaceURI,
String localName,
Object value)
Set the value associated with a variable. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public SimpleVariableContext()
Create a new empty variable context.
| Method Detail |
public void setVariableValue(String namespaceURI,
String localName,
Object value)
This method sets a variable that is
associated with a particular namespace.
These variables appear such as $prefix:foo
in an XPath expression. Prefix to URI resolution
is the responsibility of a NamespaceContext.
Variables within a VariableContext are
referred to purely based upon their namespace URI,
if any.
namespaceURI - the namespace URI of the variablelocalName - the local name of the variablevalue - The value to be bound to the variable
public void setVariableValue(String localName,
Object value)
This method sets a variable that is not
associated with any particular namespace.
These variables look like $foo
in an XPath expression.
localName - the local name of the variablevalue - the value to be bound to the variable
public Object getVariableValue(String namespaceURI,
String prefix,
String localName)
throws UnresolvableException
VariableContextIt must not use the prefix parameter to select a variable, because a prefix could be bound to any namespace; the prefix parameter could be used in debugging output or other generated information. The prefix may otherwise be ignored.
getVariableValue in interface VariableContextnamespaceURI - the namespace URI to which the prefix parameter
is bound in the XPath expression. If the variable
reference expression had no prefix, the namespace
URI is null.prefix - the prefix that was used in the variable reference
expression; this value is ignored and has no effectlocalName - the local name of the variable-reference
expression. If there is no prefix, then this is
the whole name of the variable.
null)
UnresolvableException - when the variable cannot be resolved
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