ELContext (The ZK EL Library 9.5.1.1 API)

java.lang.Object
- org.zkoss.zel.ELContext

Direct Known Subclasses:

EvaluationContext, StandardELContext
```
public abstract class ELContext
extends Object
```

Constructor Summary

Constructors
Constructor and Description

ELContext()

Constructors
Constructor and Description
`ELContext()`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addEvaluationListener(EvaluationListener listener)` Register an EvaluationListener with this ELContext.
`Object`	`convertToType(Object obj, Class<?> type)` Coerce the supplied object to the requested type.
`void`	`enterLambdaScope(Map<String,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.
`Object`	`getContext(Class key)` Obtain the context object for the given key.
`abstract ELResolver`	`getELResolver()`
`List<EvaluationListener>`	`getEvaluationListeners()` Obtain the list of registered EvaluationListeners.
`abstract FunctionMapper`	`getFunctionMapper()`
`ImportHandler`	`getImportHandler()` Obtain the ImportHandler for this ELContext, creating one if necessary.
`Object`	`getLambdaArgument(String name)` Obtain the value of the lambda argument with the given name.
`Locale`	`getLocale()`
`abstract VariableMapper`	`getVariableMapper()`
`boolean`	`isLambdaArgument(String name)` Determine if the specified name is recognised as the name of a lambda argument.
`boolean`	`isPropertyResolved()`
`void`	`notifyAfterEvaluation(String expression)` Notify interested listeners that an expression has been evaluated.
`void`	`notifyBeforeEvaluation(String expression)` Notify interested listeners that an expression will be evaluated.
`void`	`notifyPropertyResolved(Object base, Object property)` Notify interested listeners that a property has been resolved.
`void`	`putContext(Class key, Object contextObject)` Add an object to this EL context under the given key.
`void`	`setLocale(Locale locale)`
`void`	`setPropertyResolved(boolean resolved)`
`void`	`setPropertyResolved(Object base, 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
  - ELContext
```
public ELContext()
```
- Method Detail
  - setPropertyResolved
```
public void setPropertyResolved(boolean resolved)
```
  - setPropertyResolved
```
public void setPropertyResolved(Object base,
                                Object property)
```
    Mark the given property as resolved and notfy any interested listeners.
    
    Parameters:
    
    base - The base object on which the property was found
    
    property - The property that was resolved
    
    Since:
    
    EL 3.0
  - isPropertyResolved
```
public boolean isPropertyResolved()
```
  - putContext
```
public void putContext(Class key,
                       Object contextObject)
```
    Add an object to this EL context under the given key.
    
    Parameters:
    
    key - The key under which to store the object
    
    contextObject - The object to add
    
    Throws:
    
    NullPointerException - If the supplied key or context is null
  - getContext
```
public Object getContext(Class key)
```
    Obtain the context object for the given key.
    
    Parameters:
    
    key - The key of the required context object
    
    Returns:
    
    The value of the context object associated with the given key
    
    Throws:
    
    NullPointerException - If the supplied key is null
  - getELResolver
```
public abstract ELResolver getELResolver()
```
  - getImportHandler
```
public ImportHandler getImportHandler()
```
    Obtain the ImportHandler for this ELContext, creating one if necessary. This method is not thread-safe.
    
    Returns:
    
    the ImportHandler for this ELContext.
    
    Since:
    
    EL 3.0
  - getFunctionMapper
```
public abstract FunctionMapper getFunctionMapper()
```
  - getLocale
```
public Locale getLocale()
```
  - setLocale
```
public void setLocale(Locale locale)
```
  - getVariableMapper
```
public abstract VariableMapper getVariableMapper()
```
  - addEvaluationListener
```
public void addEvaluationListener(EvaluationListener listener)
```
    Register an EvaluationListener with this ELContext.
    
    Parameters:
    
    listener - The EvaluationListener to register
    
    Since:
    
    EL 3.0
  - getEvaluationListeners
```
public List<EvaluationListener> getEvaluationListeners()
```
    Obtain the list of registered EvaluationListeners.
    
    Returns:
    
    A list of the EvaluationListener registered with this ELContext
    
    Since:
    
    EL 3.0
  - notifyBeforeEvaluation
```
public void notifyBeforeEvaluation(String expression)
```
    Notify interested listeners that an expression will be evaluated.
    
    Parameters:
    
    expression - The expression that will be evaluated
    
    Since:
    
    EL 3.0
  - notifyAfterEvaluation
```
public void notifyAfterEvaluation(String expression)
```
    Notify interested listeners that an expression has been evaluated.
    
    Parameters:
    
    expression - The expression that was evaluated
    
    Since:
    
    EL 3.0
  - notifyPropertyResolved
```
public void notifyPropertyResolved(Object base,
                                   Object property)
```
    Notify interested listeners that a property has been resolved.
    
    Parameters:
    
    base - The object on which the property was resolved
    
    property - The property that was resolved
    
    Since:
    
    EL 3.0
  - isLambdaArgument
```
public boolean isLambdaArgument(String name)
```
    Determine if the specified name is recognised as the name of a lambda argument.
    
    Parameters:
    
    name - The name of the lambda argument
    
    Returns:
    
    true if the name is recognised as the name of a lambda argument, otherwise false
    
    Since:
    
    EL 3.0
  - getLambdaArgument
```
public Object getLambdaArgument(String name)
```
    Obtain the value of the lambda argument with the given name.
    
    Parameters:
    
    name - The name of the lambda argument
    
    Returns:
    
    The value of the specified argument
    
    Since:
    
    EL 3.0
  - enterLambdaScope
```
public void enterLambdaScope(Map<String,Object> arguments)
```
    Called when starting to evaluate a lambda expression so that the arguments are available to the EL context during evaluation.
    
    Parameters:
    
    arguments - The arguments in scope for the current lambda expression.
    
    Since:
    
    EL 3.0
  - exitLambdaScope
```
public void exitLambdaScope()
```
    Called after evaluating a lambda expression to signal that the arguments are no longer required.
    
    Since:
    
    EL 3.0
  - convertToType
```
public Object convertToType(Object obj,
                            Class<?> type)
```
    Coerce the supplied object to the requested type.
    
    Parameters:
    
    obj - The object to be coerced
    
    type - The type to which the object should be coerced
    
    Returns:
    
    An instance of the requested type.
    
    Throws:
    
    ELException - If the conversion fails
    
    Since:
    
    EL 3.0

Class ELContext

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ELContext

Method Detail

setPropertyResolved

setPropertyResolved

isPropertyResolved

putContext

getContext

getELResolver

getImportHandler

getFunctionMapper

getLocale

setLocale

getVariableMapper

addEvaluationListener

getEvaluationListeners

notifyBeforeEvaluation

notifyAfterEvaluation

notifyPropertyResolved

isLambdaArgument

getLambdaArgument

enterLambdaScope

exitLambdaScope

convertToType