oracle.adfnmc.el.impl
Class SimpleContext

java.lang.Object
  oracle.adfnmc.el.ELContext
      oracle.adfnmc.el.impl.SimpleContext

public class SimpleContext
extends ELContext

Oracle implementation of ELContext, based on JUEL's de.odysseus.el.util.SimpleContext.
Context's ELResolver is a CompositeELResolver that contains a SelfELResolver, MapELResolver and ListELResolver.

Author:

dmartin

Field Summary

static ValueExpression

NULL_VALUEEXPRESSION

Constructor Summary

SimpleContext()
Create a context.

Method Summary

ELResolver	getELResolver() Retrieves the ELResolver associated with this context.
FunctionMapper	getFunctionMapper() Get our function mapper.
static MethodExpression	getMethodExpression(java.lang.String expressionStr, java.lang.Class expectedReturnType, java.lang.Class[] expectedParamTypes)
static ValueExpression	getValueExpression(java.lang.String expressionStr, java.lang.Class expectedType)
VariableMapper	getVariableMapper() Get our variable mapper.
void	setFunction(java.lang.String prefix, java.lang.String localName, oracle.adfnmc.util.reflection.Method method) Define a function
ValueExpression	setVariable(java.lang.String name, ValueExpression expression) Define a variable

Methods inherited from class oracle.adfnmc.el.ELContext

getContext, getInstance, isPropertyResolved, putContext, setPropertyResolved

Methods inherited from class java.lang.Object

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

Field Detail

NULL_VALUEEXPRESSION

public static final ValueExpression NULL_VALUEEXPRESSION

Constructor Detail

SimpleContext

public SimpleContext()

Create a context.

Method Detail

getValueExpression

public static final ValueExpression getValueExpression(java.lang.String expressionStr,
                                                       java.lang.Class expectedType)

Parameters:

expressionStr - - The raw string for the expression. A null value will return an instance of an expression object whose getValue() method will return null, or a coerced primitive value of 'null' (e.g. 0, "", etc..) depending on the expectedType argument.

expectedType - - The expected type of the expression. getValue() calls on the returned expression object will throw a TypeCoercionException if the evaluated result is not castable to this type.
Required, cannot be set to null.

Returns:

getMethodExpression

public static final MethodExpression getMethodExpression(java.lang.String expressionStr,
                                                         java.lang.Class expectedReturnType,
                                                         java.lang.Class[] expectedParamTypes)

getFunctionMapper

public FunctionMapper getFunctionMapper()

Get our function mapper.

Specified by:

getFunctionMapper in class ELContext

Returns:

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

setFunction

public void setFunction(java.lang.String prefix,
                        java.lang.String localName,
                        oracle.adfnmc.util.reflection.Method method)

Define a function

getVariableMapper

public VariableMapper getVariableMapper()

Get our variable mapper.

Specified by:

getVariableMapper in class ELContext

Returns:

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

setVariable

public ValueExpression setVariable(java.lang.String name,
                                   ValueExpression expression)

Define a variable

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.