Package ca.uqac.lif.cep.xml

Class XPathFunctionGet<T>

java.lang.Object

ca.uqac.lif.cep.functions.Function

ca.uqac.lif.cep.xml.XPathFunction

ca.uqac.lif.cep.xml.XPathFunctionGet<T>

All Implemented Interfaces:

ca.uqac.lif.azrael.Printable, ca.uqac.lif.azrael.Readable, ca.uqac.lif.cep.Duplicable, ca.uqac.lif.cep.functions.DuplicableFunction

Direct Known Subclasses:

XPathFunctionGetNumber, XPathFunctionGetText

public abstract class XPathFunctionGet<T>
extends XPathFunction

Utility function to evaluate an XPath expression, ending with a text() element

Field Summary

Fields

Modifier and Type	Field	Description
protected java.lang.Class<T>	m_outputType	The type to cast the output to

Fields inherited from class ca.uqac.lif.cep.xml.XPathFunction

m_expression

Fields inherited from class ca.uqac.lif.cep.functions.Function

s_maxInputArity

Constructor Summary

Constructors

Constructor	Description
XPathFunctionGet(ca.uqac.lif.xml.XPathExpression exp, java.lang.Class<T> clazz)
XPathFunctionGet(java.lang.String exp, java.lang.Class<T> clazz)

Method Summary

Modifier and Type	Method	Description
protected abstract T	castValue(ca.uqac.lif.xml.XmlElement e)
protected T	postProcess(java.util.Collection<ca.uqac.lif.xml.XmlElement> col)

Methods inherited from class ca.uqac.lif.cep.xml.XPathFunction

duplicate, evaluate, evaluate, evaluatePlaceholders, getInputArity, getInputTypesFor, getOutputArity, getOutputTypeFor, getValue, parseExpression, toString

Methods inherited from class ca.uqac.lif.cep.functions.Function

duplicate, evaluate, evaluateLazy, evaluatePartial, print, printState, read, readState, reset

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_outputType

protected java.lang.Class<T> m_outputType

The type to cast the output to

Constructor Detail

XPathFunctionGet

public XPathFunctionGet(java.lang.String exp,
                        java.lang.Class<T> clazz)

XPathFunctionGet

public XPathFunctionGet(ca.uqac.lif.xml.XPathExpression exp,
                        java.lang.Class<T> clazz)

Method Detail

postProcess

protected T postProcess(java.util.Collection<ca.uqac.lif.xml.XmlElement> col)

Overrides:

postProcess in class XPathFunction

castValue

protected abstract T castValue(ca.uqac.lif.xml.XmlElement e)