com.plotnix.jex.jxpath
Class JXPathCompiledExpression

java.lang.Object
  |
  +--com.plotnix.jex.jxpath.JXPathCompiledExpression

All Implemented Interfaces:

Expression, IterationExpression, VariableExpression

public class JXPathCompiledExpression

extends java.lang.Object

implements Expression, IterationExpression, VariableExpression

A trivial wrapper for JXPath CompiledExpression.

If Jex becomes a part of Jakarta, JXPath will change to implement Jex interfaces directly. At that point the need for this adaptor will disappear.

Version:

$Revision$ $Date$

Author:

Dmitri Plotnikov

Constructor Summary

JXPathCompiledExpression(org.apache.commons.jxpath.CompiledExpression expression)
Wraps a jxpath CompiledExpression into a Jex Expression/IterationExpression/VariableExpression

Method Summary

void	assign(Context context, java.lang.Object value, java.lang.Object[] arguments) Modifies a value in the specified context according to the expression and the supplied arguments.
java.lang.Object	evaluate(Context context, java.lang.Object[] arguments) Produces the value described by the expression in the specified context with the supplied arguments.
java.lang.Object	evaluate(Context context, java.lang.Object[] arguments, java.lang.Class valueType) Evaluates the expression and casts the result to the supplied type.
java.util.Iterator	iterate(Context context, java.lang.Object[] arguments) Produces the iterator described by the expression in the specified context with the supplied arguments.

Methods inherited from class java.lang.Object

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

Constructor Detail

JXPathCompiledExpression

public JXPathCompiledExpression(org.apache.commons.jxpath.CompiledExpression expression)

Wraps a jxpath CompiledExpression into a Jex Expression/IterationExpression/VariableExpression

Parameters:

expression - is a jxpath-style Compiled expression

Method Detail

evaluate

public java.lang.Object evaluate(Context context,
                                 java.lang.Object[] arguments)

Description copied from interface: Expression

Produces the value described by the expression in the specified context with the supplied arguments.

Specified by:

evaluate in interface Expression

See Also:

Expression.evaluate(Context, Object[])

evaluate

public java.lang.Object evaluate(Context context,
                                 java.lang.Object[] arguments,
                                 java.lang.Class valueType)

Description copied from interface: Expression

Evaluates the expression and casts the result to the supplied type.

Specified by:

evaluate in interface Expression

See Also:

Expression.evaluate(Context, Object[], Class)

iterate

public java.util.Iterator iterate(Context context,
                                  java.lang.Object[] arguments)

Description copied from interface: IterationExpression

Produces the iterator described by the expression in the specified context with the supplied arguments.

Specified by:

iterate in interface IterationExpression

See Also:

IterationExpression.iterate(Context, Object[])

assign

public void assign(Context context,
                   java.lang.Object value,
                   java.lang.Object[] arguments)

Description copied from interface: VariableExpression

Modifies a value in the specified context according to the expression and the supplied arguments. Casts the type of the value if necessary.

Specified by:

assign in interface VariableExpression

See Also:

VariableExpression.assign(Context, Object, Object[])