Class EnvironmentAccessor

java.lang.Object

org.springframework.context.expression.EnvironmentAccessor

All Implemented Interfaces:

org.springframework.expression.PropertyAccessor, org.springframework.expression.TargetedAccessor

public class EnvironmentAccessor
extends Object
implements org.springframework.expression.PropertyAccessor

Read-only SpEL PropertyAccessor that knows how to retrieve properties of a Spring Environment instance.

Since:

3.1

Author:

Chris Beams

Constructor Summary

Constructors

Constructor	Description
EnvironmentAccessor()

Method Summary

Modifier and Type	Method	Description
boolean	canRead(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name)
boolean	canWrite(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name)	Read-only: returns false.
Class<?>[]	getSpecificTargetClasses()
org.springframework.expression.TypedValue	read(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name)	Access the given target object by resolving the given property name against the given target environment.
void	write(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name, @Nullable Object newValue)

Methods inherited from class java.lang.Object

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

Constructor Details

EnvironmentAccessor

public EnvironmentAccessor()

Method Details

getSpecificTargetClasses

public Class<?>[] getSpecificTargetClasses()

Specified by:

getSpecificTargetClasses in interface org.springframework.expression.TargetedAccessor

canRead

public boolean canRead(org.springframework.expression.EvaluationContext context,
 @Nullable Object target,
 String name)
                throws org.springframework.expression.AccessException

Specified by:

canRead in interface org.springframework.expression.PropertyAccessor

Throws:

org.springframework.expression.AccessException

read

public org.springframework.expression.TypedValue read(org.springframework.expression.EvaluationContext context,
 @Nullable Object target,
 String name)
                                               throws org.springframework.expression.AccessException

Access the given target object by resolving the given property name against the given target environment.

Specified by:

read in interface org.springframework.expression.PropertyAccessor

Throws:

org.springframework.expression.AccessException

canWrite

public boolean canWrite(org.springframework.expression.EvaluationContext context,
 @Nullable Object target,
 String name)
                 throws org.springframework.expression.AccessException

Read-only: returns false.

Specified by:

canWrite in interface org.springframework.expression.PropertyAccessor

Throws:

org.springframework.expression.AccessException

write

public void write(org.springframework.expression.EvaluationContext context,
 @Nullable Object target,
 String name,
 @Nullable Object newValue)
           throws org.springframework.expression.AccessException

Specified by:

write in interface org.springframework.expression.PropertyAccessor

Throws:

org.springframework.expression.AccessException