oracle.adf.share.el

Interface ADFExpressionEvaluator

All Known Implementing Classes:

JSPExpressionEvaluatorImpl, OracleExpressionEvaluatorImpl

public interface ADFExpressionEvaluator

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(java.lang.String expression) Evaluates the specified value expression against the evaluator's defaul variable resolver.
java.lang.Object	evaluate(java.lang.String expression, javax.servlet.jsp.el.VariableResolver variableResolver) Evaluates the specified value expression against the specified variable resolver.
java.lang.Object	evaluateHandleNull(java.lang.String expression) Evaluates the specified value expression against the evaluator's defaul variable resolver.
java.lang.Object	evaluateHandleNull(java.lang.String expression, javax.servlet.jsp.el.VariableResolver variableResolve) Evaluates the specified value expression against the specified variable resolver.
javax.servlet.jsp.el.VariableResolver	getVariableResolver() Get the default variable resolver to be used while resolving expressions with this evaluator.
void	setValue(java.lang.String expression, java.lang.Object value) Sets the value of the specified expression.
void	setValue(java.lang.String expression, java.lang.Object value, javax.servlet.jsp.el.VariableResolver variableResolver) Sets the value of the specified expression.

Method Detail

evaluate

java.lang.Object evaluate(java.lang.String expression)

Evaluates the specified value expression against the evaluator's defaul variable resolver.

invokeMethod(String, Object[]) should be used if the expression is a method expression.

Parameters:

expression - string value of el

Returns:

evaluation result of the el

Throws:

javax.el.PropertyNotFoundException - some implementations may throw a PropertyNotFoundException if one of the EL properties is not found.

evaluate

java.lang.Object evaluate(java.lang.String expression,
                          javax.servlet.jsp.el.VariableResolver variableResolver)

Evaluates the specified value expression against the specified variable resolver.

invokeMethod(String, Class[], Object[]) should be used if the expression is a method expression.

Parameters:

expression - string value of el

variableResolver - variable resolver object instance

Returns:

evaluation result from el

Throws:

javax.el.PropertyNotFoundException - some implementations may throw a PropertyNotFoundException if one of the EL properties is not found.

evaluateHandleNull

java.lang.Object evaluateHandleNull(java.lang.String expression)

Evaluates the specified value expression against the evaluator's defaul variable resolver.

invokeMethod(String, Object[]) should be used if the expression is a method expression.

Parameters:

expression - string value of el

Returns:

evaluation result of the el Differs from evaluate in that it is guaranteed not to throw a PropertyNotFoundException for null properties.

evaluateHandleNull

java.lang.Object evaluateHandleNull(java.lang.String expression,
                                    javax.servlet.jsp.el.VariableResolver variableResolve)

Evaluates the specified value expression against the specified variable resolver.

invokeMethod(String, Class[], Object[]) should be used if the expression is a method expression.

Parameters:

expression - string value of el

variableResolve - variable resolver object instance

Returns:

evaluation result from el Differs from evaluate in that it is guaranteed not to throw a PropertyNotFoundException for null properties.

setValue

void setValue(java.lang.String expression,
              java.lang.Object value)

Sets the value of the specified expression. The expression resolve to a JavaBean

Parameters:

expression - string value of the el

value - value object property.

setValue

void setValue(java.lang.String expression,
              java.lang.Object value,
              javax.servlet.jsp.el.VariableResolver variableResolver)

Sets the value of the specified expression. The expression resolve to a JavaBean property.

Parameters:

expression - string value of el

value - value object

variableResolver - variable resolver object instance

getVariableResolver

javax.servlet.jsp.el.VariableResolver getVariableResolver()

Get the default variable resolver to be used while resolving expressions with this evaluator.

Returns:

variable resolver object instance