public abstract class ExpressionEvaluator extends Object
Constructor and Description |
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ExpressionEvaluator() |
Modifier and Type | Method and Description |
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void |
close()
This method closes the expression evaluator.
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abstract String |
evaluate(Object information)
This method evaluates the supplied information to
derive and return a result.
|
String |
getExpression()
This method returns the expression.
|
boolean |
getOptional()
This method gets whether the value being obtained
is optional.
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void |
init()
This method initializes the expression evaluator.
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void |
setExpression(String expr)
This method sets the expression.
|
void |
setOptional(boolean optional)
This method sets whether the value being obtained
is optional.
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public String getExpression()
public void setExpression(String expr)
expr
- The expressionpublic boolean getOptional()
public void setOptional(boolean optional)
optional
- Whether the value associated with the expression is optionalpublic void init() throws Exception
Exception
- Failed to initializepublic abstract String evaluate(Object information)
information
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