org.apache.jasper.el
Class ELContextWrapper

java.lang.Object
  javax.el.ELContext
      org.apache.jasper.el.ELContextWrapper

public final class ELContextWrapper
extends javax.el.ELContext

Simple ELContextWrapper for runtime evaluation of EL w/ dynamic FunctionMappers

Author:

jhook

Constructor Summary

ELContextWrapper(javax.el.ELContext target, javax.el.FunctionMapper fnMapper)

Method Summary

java.lang.Object	getContext(java.lang.Class key) Returns the context object associated with the given key.
javax.el.ELResolver	getELResolver() Retrieves the ELResolver associated with this context.
javax.el.FunctionMapper	getFunctionMapper() Retrieves the FunctionMapper associated with this ELContext.
java.util.Locale	getLocale() Get the Locale stored by a previous invocation to ELContext.setLocale(java.util.Locale).
javax.el.VariableMapper	getVariableMapper() Retrieves the VariableMapper associated with this ELContext.
boolean	isPropertyResolved() Returns whether an ELResolver has successfully resolved a given (base, property) pair.
void	putContext(java.lang.Class key, java.lang.Object contextObject) Associates a context object with this ELContext.
void	setLocale(java.util.Locale locale) Set the Locale for this instance.
void	setPropertyResolved(boolean resolved) Called to indicate that a ELResolver has successfully resolved a given (base, property) pair.

Methods inherited from class java.lang.Object

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

Constructor Detail

ELContextWrapper

public ELContextWrapper(javax.el.ELContext target,
                        javax.el.FunctionMapper fnMapper)

Method Detail

getELResolver

public javax.el.ELResolver getELResolver()

Description copied from class: javax.el.ELContext

Retrieves the ELResolver associated with this context.

The ELContext maintains a reference to the ELResolver that will be consulted to resolve variables and properties during an expression evaluation. This method retrieves the reference to the resolver.

Once an ELContext is constructed, the reference to the ELResolver associated with the context cannot be changed.

Specified by:

getELResolver in class javax.el.ELContext

Returns:

The resolver to be consulted for variable and property resolution during expression evaluation.

getFunctionMapper

public javax.el.FunctionMapper getFunctionMapper()

Description copied from class: javax.el.ELContext

Retrieves the FunctionMapper associated with this ELContext.

Specified by:

getFunctionMapper in class javax.el.ELContext

Returns:

The function mapper to be consulted for the resolution of EL functions.

getVariableMapper

public javax.el.VariableMapper getVariableMapper()

Description copied from class: javax.el.ELContext

Retrieves the VariableMapper associated with this ELContext.

Specified by:

getVariableMapper in class javax.el.ELContext

Returns:

The variable mapper to be consulted for the resolution of EL variables.

getContext

public java.lang.Object getContext(java.lang.Class key)

Description copied from class: javax.el.ELContext

Returns the context object associated with the given key.

The ELContext maintains a collection of context objects relevant to the evaluation of an expression. These context objects are used by ELResolvers. This method is used to retrieve the context with the given key from the collection.

By convention, the object returned will be of the type specified by the key. However, this is not required and the key is used strictly as a unique identifier.

Overrides:

getContext in class javax.el.ELContext

Parameters:

key - The unique identifier that was used to associate the context object with this ELContext.

Returns:

The context object associated with the given key, or null if no such context was found.

getLocale

public java.util.Locale getLocale()

Description copied from class: javax.el.ELContext

Get the Locale stored by a previous invocation to ELContext.setLocale(java.util.Locale). If this method returns non null, this Locale must be used for all localization needs in the implementation. The Locale must not be cached to allow for applications that change Locale dynamically.

Overrides:

getLocale in class javax.el.ELContext

Returns:

The Locale in which this instance is operating. Used primarily for message localization.

isPropertyResolved

public boolean isPropertyResolved()

Description copied from class: javax.el.ELContext

Returns whether an ELResolver has successfully resolved a given (base, property) pair.

The CompositeELResolver checks this property to determine whether it should consider or skip other component resolvers.

Overrides:

isPropertyResolved in class javax.el.ELContext

Returns:

true if the property has been resolved, or false if not.

See Also:

CompositeELResolver

putContext

public void putContext(java.lang.Class key,
                       java.lang.Object contextObject)
                throws java.lang.NullPointerException

Description copied from class: javax.el.ELContext

Associates a context object with this ELContext.

The ELContext maintains a collection of context objects relevant to the evaluation of an expression. These context objects are used by ELResolvers. This method is used to add a context object to that collection.

By convention, the contextObject will be of the type specified by the key. However, this is not required and the key is used strictly as a unique identifier.

Overrides:

putContext in class javax.el.ELContext

Parameters:

key - The key used by an @{link ELResolver} to identify this context object.

contextObject - The context object to add to the collection.

Throws:

java.lang.NullPointerException - if key is null or contextObject is null.

setLocale

public void setLocale(java.util.Locale locale)

Description copied from class: javax.el.ELContext

Set the Locale for this instance. This method may be called by the party creating the instance, such as JavaServer Faces or JSP, to enable the EL implementation to provide localized messages to the user. If no Locale is set, the implementation must use the locale returned by Locale.getDefault( ).

Overrides:

setLocale in class javax.el.ELContext

setPropertyResolved

public void setPropertyResolved(boolean resolved)

Description copied from class: javax.el.ELContext

Called to indicate that a ELResolver has successfully resolved a given (base, property) pair.

The CompositeELResolver checks this property to determine whether it should consider or skip other component resolvers.

Overrides:

setPropertyResolved in class javax.el.ELContext

Parameters:

resolved - true if the property has been resolved, or false if not.

See Also:

CompositeELResolver