de.ipcon.db.mex

Class VariableExpansionEvaluator

java.lang.Object

de.ipcon.db.mex.VariableExpansionEvaluator

All Implemented Interfaces:

MEXTransformerEvaluatorI

public class VariableExpansionEvaluator
extends java.lang.Object
implements MEXTransformerEvaluatorI

Evaluator for variable expansion. Parses for expressions like {=name} and replaces them with the value stored for the variable "name" in the transformer's context.

Constructor Summary

Constructors

Constructor and Description
VariableExpansionEvaluator()

Method Summary

Modifier and Type	Method and Description
java.lang.CharSequence	evaluate(java.lang.CharSequence s, MEXTransformer transformer) Attempts to match and evaluate a variable expansion expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableExpansionEvaluator

public VariableExpansionEvaluator()

Method Detail

evaluate

public java.lang.CharSequence evaluate(java.lang.CharSequence s,
                                       MEXTransformer transformer)

Attempts to match and evaluate a variable expansion expression.

Specified by:

evaluate in interface MEXTransformerEvaluatorI

Parameters:

s - The content inside the curly braces.

transformer - The MEXTransformer context.

Returns:

The variable value if the pattern is matched and the variable exists, or the original sequence s if no match or the variable is not found.