Package org.jdesktop.el.impl.lang

Class EvaluationContext

java.lang.Object

org.jdesktop.el.ELContext

org.jdesktop.el.impl.lang.EvaluationContext

public final class EvaluationContext
extends ELContext

Field Summary

Fields inherited from class org.jdesktop.el.ELContext

UNRESOLVABLE_RESULT

Constructor Summary

Constructors

Constructor	Description
EvaluationContext(ELContext elContext, FunctionMapper fnMapper, VariableMapper varMapper, Expression expression)
EvaluationContext(ELContext elContext, FunctionMapper fnMapper, VariableMapper varMapper, Expression expression, boolean trackResolvedProperties)

Method Summary

Modifier and Type	Method	Description
void	clearResolvedProperties()
Object	getContext(Class key)	Returns the context object associated with the given key.
ELContext	getELContext()
ELResolver	getELResolver()	Retrieves the ELResolver associated with this context.
Expression	getExpression()
FunctionMapper	getFunctionMapper()	Retrieves the FunctionMapper associated with this ELContext.
List<Expression.ResolvedProperty>	getResolvedProperties()
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(Class key, Object contextObject)	Associates a context object with this ELContext.
void	resolvedIdentifier(Object base, Object property)
void	resolvedProperty(Object base, Object property)
void	setPropertyResolved(boolean resolved)	Called to indicate that a ELResolver has successfully resolved a given (base, property) pair.

Methods inherited from class org.jdesktop.el.ELContext

getLocale, setLocale

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluationContext

public EvaluationContext(ELContext elContext,
                         FunctionMapper fnMapper,
                         VariableMapper varMapper,
                         Expression expression)

EvaluationContext

public EvaluationContext(ELContext elContext,
                         FunctionMapper fnMapper,
                         VariableMapper varMapper,
                         Expression expression,
                         boolean trackResolvedProperties)

Method Detail

getELContext

public ELContext getELContext()

getFunctionMapper

public FunctionMapper getFunctionMapper()

Description copied from class: ELContext

Retrieves the FunctionMapper associated with this ELContext.

Specified by:

getFunctionMapper in class ELContext

Returns:

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

getVariableMapper

public VariableMapper getVariableMapper()

Description copied from class: ELContext

Retrieves the VariableMapper associated with this ELContext.

Specified by:

getVariableMapper in class ELContext

Returns:

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

getExpression

public Expression getExpression()

getContext

public Object getContext(Class key)

Description copied from class: 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 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.

getELResolver

public ELResolver getELResolver()

Description copied from class: 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 ELContext

Returns:

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

isPropertyResolved

public boolean isPropertyResolved()

Description copied from class: 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 ELContext

Returns:

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

See Also:

CompositeELResolver

putContext

public void putContext(Class key,
                       Object contextObject)

Description copied from class: 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 ELContext

Parameters:

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

contextObject - The context object to add to the collection.

setPropertyResolved

public void setPropertyResolved(boolean resolved)

Description copied from class: 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 ELContext

Parameters:

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

See Also:

CompositeELResolver

clearResolvedProperties

public void clearResolvedProperties()

resolvedIdentifier

public void resolvedIdentifier(Object base,
                               Object property)

resolvedProperty

public void resolvedProperty(Object base,
                             Object property)

getResolvedProperties

public List<Expression.ResolvedProperty> getResolvedProperties()