Interface JRXPathExecuter
- All Known Implementing Classes:
JaxenNsAwareXPathExecuter,JaxenXPathExecuter,XalanNsAwareXPathExecuter,XalanXPathExecuter
public interface JRXPathExecuter
An XPath expression executer.
XML data sources delegate XPath executions to implementations
of this interface.- Author:
- Lucian Chirita (lucianc@users.sourceforge.net)
- See Also:
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Method Summary
Modifier and TypeMethodDescriptionselectNodeList(Node contextNode, String expression) Selects a node list by evaluating an XPath expression on a context node.selectObject(Node contextNode, String expression) Selects an object by evaluating an XPath expression on a context node.
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Method Details
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selectNodeList
Selects a node list by evaluating an XPath expression on a context node.- Parameters:
contextNode- the context node (a document can also be used)expression- the XPath expression- Returns:
- the selected node list
- Throws:
JRException- if the XPath evaluation failed
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selectObject
Selects an object by evaluating an XPath expression on a context node. If the expression evaluates to a node list, the first node in the list should be returned. Otherwise, the primitive value resulted from the evaluation should be returned as ajava.lang.String,java.lang.Numberorjava.lang.Boolean.- Parameters:
contextNode- the context node (a document can also be used)expression- the XPath expression- Returns:
- the selected node or value
- Throws:
JRException- if the XPath evaluation failed
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