org.apache.xpath.jaxp
public class XPathExpressionImpl extends Object implements XPathExpression
Version: $Revision: 1.1 $
Method Summary | |
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Object | eval(Object item, QName returnType) |
Object | evaluate(Object item, QName returnType) Evaluate the compiled XPath expression in the specified context and return the result as the specified type. See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion. If If a |
String | evaluate(Object item) Evaluate the compiled XPath expression in the specified context and
return the result as a This method calls XPathExpressionImpl
with a See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion. If a |
Object | evaluate(InputSource source, QName returnType) Evaluate the compiled XPath expression in the context of the
specified This method builds a data model for the InputSource and calls XPathExpressionImpl on the resulting document object. See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion. If If |
String | evaluate(InputSource source) Evaluate the compiled XPath expression in the context of the specified This method calls XPathExpressionImpl with a See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion. If |
void | setXPath(XPath xpath) |
Evaluate the compiled XPath expression in the specified context and return the result as the specified type.
See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion.
If returnType
is not one of the types defined
in XPathConstants,
then an IllegalArgumentException
is thrown.
If a null
value is provided for
item
, an empty document will be used for the
context.
If returnType
is null
, then a
NullPointerException
is thrown.
Parameters: item The starting context (node or node list, for example). returnType The desired return type.
Returns: The Object
that is the result of evaluating the
expression and converting the result to
returnType
.
Throws: XPathExpressionException If the expression cannot be evaluated. IllegalArgumentException If returnType
is not one
of the types defined in XPathConstants. NullPointerException If returnType
is
null
.
Evaluate the compiled XPath expression in the specified context and
return the result as a String
.
This method calls XPathExpressionImpl
with a returnType
of
XPathConstants#STRING.
See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion.
If a null
value is provided for
item
, an empty document will be used for the
context.
Parameters: item The starting context (node or node list, for example).
Returns: The String
that is the result of evaluating the
expression and converting the result to a
String
.
Throws: XPathExpressionException If the expression cannot be evaluated.
Evaluate the compiled XPath expression in the context of the
specified InputSource
and return the result as the
specified type.
This method builds a data model for the InputSource and calls XPathExpressionImpl on the resulting document object.
See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion.
If returnType
is not one of the types defined in
XPathConstants,
then an IllegalArgumentException
is thrown.
If source
or returnType
is null
,
then a NullPointerException
is thrown.
Parameters: source The InputSource
of the document to evaluate
over. returnType The desired return type.
Returns: The Object
that is the result of evaluating the
expression and converting the result to
returnType
.
Throws: XPathExpressionException If the expression cannot be evaluated. IllegalArgumentException If returnType
is not one
of the types defined in XPathConstants. NullPointerException If source
or
returnType
is null
.
Evaluate the compiled XPath expression in the context of the specified InputSource
and return the result as a
String
.
This method calls XPathExpressionImpl with a returnType
of
XPathConstants#STRING.
See "Evaluation of XPath Expressions" section of JAXP 1.3 spec for context item evaluation, variable, function and QName resolution and return type conversion.
If source
is null
, then a NullPointerException
is thrown.
Parameters: source The InputSource
of the document to evaluate over.
Returns: The String
that is the result of evaluating the expression and converting the result to a
String
.
Throws: XPathExpressionException If the expression cannot be evaluated. NullPointerException If source
is null
.