Package org.apache.el

Class ExpressionFactoryImpl

java.lang.Object

jakarta.el.ExpressionFactory

org.apache.el.ExpressionFactoryImpl

public class ExpressionFactoryImpl
extends ExpressionFactory

Implementation of ExpressionFactory.

Constructor Summary

Constructors

Constructor	Description
ExpressionFactoryImpl()	Creates a new ExpressionFactoryImpl instance.

Method Summary

Modifier and Type	Method	Description
<T> T	coerceToType(java.lang.Object obj, java.lang.Class<T> type)	Coerce the supplied object to the requested type.
MethodExpression	createMethodExpression(ELContext context, java.lang.String expression, java.lang.Class<?> expectedReturnType, java.lang.Class<?>[] expectedParamTypes)	Create a new method expression instance.
ValueExpression	createValueExpression(ELContext context, java.lang.String expression, java.lang.Class<?> expectedType)	Create a new value expression.
ValueExpression	createValueExpression(java.lang.Object instance, java.lang.Class<?> expectedType)	Creates a ValueExpression that, when evaluated, returns the given instance of the specified type.
ELResolver	getStreamELResolver()	Returns an ELResolver capable of resolving properties on InputStream objects, enabling EL expressions to operate on stream types.

Methods inherited from class jakarta.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()

Creates a new ExpressionFactoryImpl instance.

Method Detail

coerceToType

public <T> T coerceToType(java.lang.Object obj,
                          java.lang.Class<T> type)

Description copied from class: jakarta.el.ExpressionFactory

Coerce the supplied object to the requested type.

Specified by:

coerceToType in class ExpressionFactory

Type Parameters:

T - The type to which the object should be coerced

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,
                                               java.lang.String expression,
                                               java.lang.Class<?> expectedReturnType,
                                               java.lang.Class<?>[] expectedParamTypes)

Description copied from class: jakarta.el.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,
                                             java.lang.String expression,
                                             java.lang.Class<?> expectedType)

Description copied from class: jakarta.el.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(java.lang.Object instance,
                                             java.lang.Class<?> expectedType)

Description copied from class: jakarta.el.ExpressionFactory

Creates a ValueExpression that, when evaluated, returns the given instance of the specified type. This is a convenience method for creating a constant value expression without requiring an ELContext.

Specified by:

createValueExpression in class ExpressionFactory

Parameters:

instance - the constant value to wrap

expectedType - the expected type of the value

Returns:

a ValueExpression that returns the given instance when evaluated

getStreamELResolver

public ELResolver getStreamELResolver()

Description copied from class: jakarta.el.ExpressionFactory

Returns an ELResolver capable of resolving properties on InputStream objects, enabling EL expressions to operate on stream types. This allows expressions to read data from input streams using standard property navigation syntax.

Overrides:

getStreamELResolver in class ExpressionFactory

Returns:

the StreamELResolver, or null if not supported by this implementation