de.unidu.is.expressions
Class PlainExpression

java.lang.Object
  de.unidu.is.expressions.AbstractExpression
      de.unidu.is.expressions.PlainExpression

All Implemented Interfaces:

Expression

public class PlainExpression

extends AbstractExpression

An expression for plain content.

Since:

2003-10-21

Version:

$Revision: 1.7 $, $Date: 2005/03/14 17:33:14 $

Author:

Henrik Nottelmann

Field Summary

protected java.lang.String

content The content of this expression.

Constructor Summary

PlainExpression(java.lang.String content)
Creates a new expression object.

Method Summary

boolean	equals(java.lang.Object o) Tests whether this expressions equals the specified PlainExpression.
int	hashCode() Returns the hashcode of this expression object.
void	set(java.lang.String content) Sets the content of this expression.
Expression	substitute(java.util.Map binding) Performs an substitution for variables, e.g. for each key variable in the specified binding, all occurences of ${key} are replaced by the corresponding value in the map.
java.lang.String	toString() Returns the content of this expression.

Methods inherited from class de.unidu.is.expressions.AbstractExpression

getSQLTemplate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

content

protected java.lang.String content

The content of this expression.

Constructor Detail

PlainExpression

public PlainExpression(java.lang.String content)

Creates a new expression object.

Parameters:

content - expression content

Method Detail

equals

public boolean equals(java.lang.Object o)

Tests whether this expressions equals the specified PlainExpression.

Parameters:

o - expression to test

Returns:

true iff both expressions are equal

toString

public java.lang.String toString()

Returns the content of this expression.

Returns:

content of this expression

hashCode

public int hashCode()

Returns the hashcode of this expression object.

Returns:

hashcode of this expression object

substitute

public Expression substitute(java.util.Map binding)

Performs an substitution for variables, e.g. for each key variable in the specified binding, all occurences of ${key} are replaced by the corresponding value in the map.

How the substitution is managed is left to the implementing class. It is explicitly allowed to return a new expression object.

Specified by:

substitute in interface Expression

Overrides:

substitute in class AbstractExpression

Parameters:

binding - variable binding

Returns:

expression after substitution

set

public void set(java.lang.String content)

Sets the content of this expression.

Parameters:

content - new content