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Java Source Code / Java Documentation » Library » Apache commons betwixt 0.8 src » org.apache.commons.betwixt.expression

Source Cross Reference Class Diagram Java Document (Java Doc)

org.apache.commons.betwixt.expression .Expression

All known Subclasses:   org.apache.commons.betwixt.expression .EmptyExpression,  org.apache.commons.betwixt.expression .StringExpression,  org.apache.commons.betwixt.expression .DynaBeanExpression,  org.apache.commons.betwixt.expression .VariableExpression,  org.apache.commons.betwixt.expression .ConstantExpression,  org.apache.commons.betwixt.expression .IteratorExpression,  org.apache.commons.betwixt.expression .MethodExpression,  org.apache.commons.betwixt.expression .ClassNameExpression,
Expression
public interface Expression (Code)

Expression represents an arbitrary expression on a bean.

author:
   James Strachan

Method Summary
public Object evaluate(Context context)

public void update(Context context, String newValue)

Updates the current bean context with a new String value.

Method Detail
evaluate
public Object evaluate(Context context)(Code)
Evaluates the expression on the bean with the given context and returns the result
Parameters:
  context - evaluate against this Context the value of the expression

update
public void update(Context context, String newValue)(Code)

Updates the current bean context with a new String value. This is typically used when parsing XML and updating a beans value from XML.

Parameters:
  context - update this Context
Parameters:
  newValue - the new value for this expressionUpdater

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