org.specrunner.expressions.core
Class ExpressionVariable

java.lang.Object
  org.specrunner.expressions.core.AbstractExpression
      org.specrunner.expressions.core.ExpressionVariable

All Implemented Interfaces:

IExpression

public class ExpressionVariable
extends AbstractExpression

Expression variable. Lookup by variable name in the context using getByName(<name>) method.

Author:

Thiago Santos

Field Summary

protected String

name The variable name.

Fields inherited from class org.specrunner.expressions.core.AbstractExpression

DEFAULT_PRECEDENCE

Fields inherited from interface org.specrunner.expressions.IExpression

FEATURE_PRECEDENCE

Constructor Summary

ExpressionVariable(IExpressionFactory parent, String name)
Creates an expression to access a variable.

Method Summary

Object	evaluate(IContext context, boolean silent) Given a context, evaluates the expression.
String	getName() Gets the variable name.
void	setName(String name) Sets the variable name.

Methods inherited from class org.specrunner.expressions.core.AbstractExpression

evaluate, getParent, getPrecedence, setPrecedence

Methods inherited from class java.lang.Object

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

Field Detail

name

protected String name

The variable name.

Constructor Detail

ExpressionVariable

public ExpressionVariable(IExpressionFactory parent,
                          String name)

Creates an expression to access a variable.

Parameters:

parent - The expression factory.

name - The variable name.

Method Detail

getName

public String getName()

Gets the variable name.

Returns:

The name.

setName

public void setName(String name)

Sets the variable name.

Parameters:

name - The name.

evaluate

public Object evaluate(IContext context,
                       boolean silent)
                throws ExpressionException

Description copied from interface: IExpression

Given a context, evaluates the expression.

Parameters:

context - A contextual information.

silent - true, for evaluation without exceptions, false, otherwise.

Returns:

The result of expression evaluation.

Throws:

ExpressionException - On evaluation errors.