org.apache.el

Class ExpressionFactoryImpl

java.lang.Object

javax.el.ExpressionFactory

org.apache.el.ExpressionFactoryImpl

public class ExpressionFactoryImpl
extends ExpressionFactory

Author:

Jacob Hookom [jacob@hookom.net]

See Also:

ExpressionFactory

Constructor Summary

Constructors

Constructor and Description
ExpressionFactoryImpl()

Method Summary

Modifier and Type	Method and Description
Object	coerceToType(Object obj, Class<?> type) Coerce the supplied object to the requested type.
MethodExpression	createMethodExpression(ELContext context, String expression, Class<?> expectedReturnType, Class<?>[] expectedParamTypes) Create a new method expression instance.
ValueExpression	createValueExpression(ELContext context, String expression, Class<?> expectedType) Create a new value expression.
ValueExpression	createValueExpression(Object instance, Class<?> expectedType)
ELResolver	getStreamELResolver()

Methods inherited from class javax.el.ExpressionFactory

getInitFunctionMap, newInstance, newInstance

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionFactoryImpl

public ExpressionFactoryImpl()

Method Detail

coerceToType

public Object coerceToType(Object obj,
                           Class<?> type)

Description copied from class: ExpressionFactory

Coerce the supplied object to the requested type.

Specified by:

coerceToType in class ExpressionFactory

Parameters:

obj - The object to be coerced

type - The type to which the object should be coerced

Returns:

An instance of the requested type.

createMethodExpression

public MethodExpression createMethodExpression(ELContext context,
                                               String expression,
                                               Class<?> expectedReturnType,
                                               Class<?>[] expectedParamTypes)

Description copied from class: ExpressionFactory

Create a new method expression instance.

Specified by:

createMethodExpression in class ExpressionFactory

Parameters:

context - The EL context for this evaluation

expression - The String representation of the method expression

expectedReturnType - The expected type of the result of invoking the method

expectedParamTypes - The expected types of the input parameters

Returns:

A new method expression formed from the input parameters.

createValueExpression

public ValueExpression createValueExpression(ELContext context,
                                             String expression,
                                             Class<?> expectedType)

Description copied from class: ExpressionFactory

Create a new value expression.

Specified by:

createValueExpression in class ExpressionFactory

Parameters:

context - The EL context for this evaluation

expression - The String representation of the value expression

expectedType - The expected type of the result of evaluating the expression

Returns:

A new value expression formed from the input parameters

createValueExpression

public ValueExpression createValueExpression(Object instance,
                                             Class<?> expectedType)

Specified by:

createValueExpression in class ExpressionFactory

getStreamELResolver

public ELResolver getStreamELResolver()

Overrides:

getStreamELResolver in class ExpressionFactory

Returns:

This default implementation returns null