org.zkoss.zel.impl.lang
Class EvaluationContext

java.lang.Object
  extended by org.zkoss.zel.ELContext
      extended by org.zkoss.zel.impl.lang.EvaluationContext

public final class EvaluationContext
extends ELContext


Constructor Summary
EvaluationContext(ELContext elContext, FunctionMapper fnMapper, VariableMapper varMapper)
           
 
Method Summary
 void addEvaluationListener(EvaluationListener listener)
          Register an EvaluationListener with this ELContext.
 java.lang.Object convertToType(java.lang.Object obj, java.lang.Class<?> type)
          Coerce the supplied object to the requested type.
 void enterLambdaScope(java.util.Map<java.lang.String,java.lang.Object> arguments)
          Called when starting to evaluate a lambda expression so that the arguments are available to the EL context during evaluation.
 void exitLambdaScope()
          Called after evaluating a lambda expression to signal that the arguments are no longer required.
 java.lang.Object getContext(java.lang.Class key)
          Obtain the context object for the given key.
 ELContext getELContext()
           
 ELResolver getELResolver()
           
 java.util.List<EvaluationListener> getEvaluationListeners()
          Obtain the list of registered EvaluationListeners.
 FunctionMapper getFunctionMapper()
           
 ImportHandler getImportHandler()
          Obtain the ImportHandler for this ELContext, creating one if necessary.
 java.lang.Object getLambdaArgument(java.lang.String name)
          Obtain the value of the lambda argument with the given name.
 java.util.Locale getLocale()
           
 VariableMapper getVariableMapper()
           
 boolean isLambdaArgument(java.lang.String name)
          Determine if the specified name is recognised as the name of a lambda argument.
 boolean isPropertyResolved()
           
 void notifyAfterEvaluation(java.lang.String expression)
          Notify interested listeners that an expression has been evaluated.
 void notifyBeforeEvaluation(java.lang.String expression)
          Notify interested listeners that an expression will be evaluated.
 void notifyPropertyResolved(java.lang.Object base, java.lang.Object property)
          Notify interested listeners that a property has been resolved.
 void putContext(java.lang.Class key, java.lang.Object contextObject)
          Add an object to this EL context under the given key.
 void setLocale(java.util.Locale locale)
           
 void setPropertyResolved(boolean resolved)
           
 void setPropertyResolved(java.lang.Object base, java.lang.Object property)
          Mark the given property as resolved and notfy any interested listeners.
 
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)
Method Detail

getELContext

public ELContext getELContext()

getFunctionMapper

public FunctionMapper getFunctionMapper()
Specified by:
getFunctionMapper in class ELContext

getVariableMapper

public VariableMapper getVariableMapper()
Specified by:
getVariableMapper in class ELContext

getContext

public java.lang.Object getContext(java.lang.Class key)
Description copied from class: ELContext
Obtain the context object for the given key.

Overrides:
getContext in class ELContext
Parameters:
key - The key of the required context object
Returns:
The value of the context object associated with the given key

getELResolver

public ELResolver getELResolver()
Specified by:
getELResolver in class ELContext

isPropertyResolved

public boolean isPropertyResolved()
Overrides:
isPropertyResolved in class ELContext

putContext

public void putContext(java.lang.Class key,
                       java.lang.Object contextObject)
Description copied from class: ELContext
Add an object to this EL context under the given key.

Overrides:
putContext in class ELContext
Parameters:
key - The key under which to store the object
contextObject - The object to add

setPropertyResolved

public void setPropertyResolved(boolean resolved)
Overrides:
setPropertyResolved in class ELContext

getLocale

public java.util.Locale getLocale()
Overrides:
getLocale in class ELContext

setLocale

public void setLocale(java.util.Locale locale)
Overrides:
setLocale in class ELContext

setPropertyResolved

public void setPropertyResolved(java.lang.Object base,
                                java.lang.Object property)
Description copied from class: ELContext
Mark the given property as resolved and notfy any interested listeners.

Overrides:
setPropertyResolved in class ELContext
Parameters:
base - The base object on which the property was found
property - The property that was resolved

getImportHandler

public ImportHandler getImportHandler()
Description copied from class: ELContext
Obtain the ImportHandler for this ELContext, creating one if necessary. This method is not thread-safe.

Overrides:
getImportHandler in class ELContext
Returns:
the ImportHandler for this ELContext.

addEvaluationListener

public void addEvaluationListener(EvaluationListener listener)
Description copied from class: ELContext
Register an EvaluationListener with this ELContext.

Overrides:
addEvaluationListener in class ELContext
Parameters:
listener - The EvaluationListener to register

getEvaluationListeners

public java.util.List<EvaluationListener> getEvaluationListeners()
Description copied from class: ELContext
Obtain the list of registered EvaluationListeners.

Overrides:
getEvaluationListeners in class ELContext
Returns:
A list of the EvaluationListener registered with this ELContext

notifyBeforeEvaluation

public void notifyBeforeEvaluation(java.lang.String expression)
Description copied from class: ELContext
Notify interested listeners that an expression will be evaluated.

Overrides:
notifyBeforeEvaluation in class ELContext
Parameters:
expression - The expression that will be evaluated

notifyAfterEvaluation

public void notifyAfterEvaluation(java.lang.String expression)
Description copied from class: ELContext
Notify interested listeners that an expression has been evaluated.

Overrides:
notifyAfterEvaluation in class ELContext
Parameters:
expression - The expression that was evaluated

notifyPropertyResolved

public void notifyPropertyResolved(java.lang.Object base,
                                   java.lang.Object property)
Description copied from class: ELContext
Notify interested listeners that a property has been resolved.

Overrides:
notifyPropertyResolved in class ELContext
Parameters:
base - The object on which the property was resolved
property - The property that was resolved

isLambdaArgument

public boolean isLambdaArgument(java.lang.String name)
Description copied from class: ELContext
Determine if the specified name is recognised as the name of a lambda argument.

Overrides:
isLambdaArgument in class ELContext
Parameters:
name - The name of the lambda argument
Returns:
true if the name is recognised as the name of a lambda argument, otherwise false

getLambdaArgument

public java.lang.Object getLambdaArgument(java.lang.String name)
Description copied from class: ELContext
Obtain the value of the lambda argument with the given name.

Overrides:
getLambdaArgument in class ELContext
Parameters:
name - The name of the lambda argument
Returns:
The value of the specified argument

enterLambdaScope

public void enterLambdaScope(java.util.Map<java.lang.String,java.lang.Object> arguments)
Description copied from class: ELContext
Called when starting to evaluate a lambda expression so that the arguments are available to the EL context during evaluation.

Overrides:
enterLambdaScope in class ELContext
Parameters:
arguments - The arguments in scope for the current lambda expression.

exitLambdaScope

public void exitLambdaScope()
Description copied from class: ELContext
Called after evaluating a lambda expression to signal that the arguments are no longer required.

Overrides:
exitLambdaScope in class ELContext

convertToType

public java.lang.Object convertToType(java.lang.Object obj,
                                      java.lang.Class<?> type)
Description copied from class: ELContext
Coerce the supplied object to the requested type.

Overrides:
convertToType in class ELContext
Parameters:
obj - The object to be coerced
type - The type to which the object should be coerced
Returns:
An instance of the requested type.


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