Package org.springframework.context.expression

Class MethodBasedEvaluationContext

java.lang.Object

org.springframework.expression.spel.support.StandardEvaluationContext

org.springframework.context.expression.MethodBasedEvaluationContext

All Implemented Interfaces:

org.springframework.expression.EvaluationContext

public class MethodBasedEvaluationContext
extends org.springframework.expression.spel.support.StandardEvaluationContext

A method-based EvaluationContext that provides explicit support for method-based invocations.

Expose the actual method arguments using the following aliases:

1. pX where X is the index of the argument (p0 for the first argument)
2. aX where X is the index of the argument (a1 for the second argument)
3. the name of the parameter as discovered by a configurable ParameterNameDiscoverer

Since:

4.2

Author:

Stephane Nicoll, Juergen Hoeller

Constructor Summary

Constructors

Constructor	Description
MethodBasedEvaluationContext(Object rootObject, Method method, Object[] arguments, org.springframework.core.ParameterNameDiscoverer parameterNameDiscoverer)

Method Summary

Modifier and Type	Method	Description
protected void	lazyLoadArguments()	Load the param information only when needed.
Object	lookupVariable(String name)

Methods inherited from class org.springframework.expression.spel.support.StandardEvaluationContext

addConstructorResolver, addMethodResolver, addPropertyAccessor, getBeanResolver, getConstructorResolvers, getMethodResolvers, getOperatorOverloader, getPropertyAccessors, getRootObject, getTypeComparator, getTypeConverter, getTypeLocator, registerFunction, registerMethodFilter, removeConstructorResolver, removeMethodResolver, removePropertyAccessor, setBeanResolver, setConstructorResolvers, setMethodResolvers, setOperatorOverloader, setPropertyAccessors, setRootObject, setRootObject, setTypeComparator, setTypeConverter, setTypeLocator, setVariable, setVariables

Methods inherited from class java.lang.Object

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

Constructor Details

MethodBasedEvaluationContext

public MethodBasedEvaluationContext(Object rootObject,
 Method method,
 Object[] arguments,
 org.springframework.core.ParameterNameDiscoverer parameterNameDiscoverer)

Method Details

lookupVariable

@Nullable
public Object lookupVariable(String name)

Specified by:

lookupVariable in interface org.springframework.expression.EvaluationContext

Overrides:

lookupVariable in class org.springframework.expression.spel.support.StandardEvaluationContext

lazyLoadArguments

protected void lazyLoadArguments()

Load the param information only when needed.