| java.lang.Object | |
| ↳ | org.springframework.context.expression.EnvironmentAccessor |
Class Overview
Read-only EL property accessor that knows how to retrieve keys
of a Spring Environment instance.
Summary
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| Public Methods | |||||||||||
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Can read any
Environment, thus always returns true. | |||||||||||
Read only.
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Return an array of classes for which this resolver should be called.
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Access the given target object by resolving the given property name against the given target
environment.
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Read only.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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From interface
org.springframework.expression.PropertyAccessor
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Public Constructors
public EnvironmentAccessor ()
Public Methods
public boolean canRead (EvaluationContext context, Object target, String name)
Can read any Environment, thus always returns true.
Parameters
| context | the evaluation context in which the access is being attempted |
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| target | the target object upon which the property is being accessed |
| name | the name of the property being accessed |
Returns
- true
Throws
| AccessException |
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public boolean canWrite (EvaluationContext context, Object target, String name)
Read only.
Parameters
| context | the evaluation context in which the access is being attempted |
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| target | the target object upon which the property is being accessed |
| name | the name of the property being accessed |
Returns
- false
Throws
| AccessException |
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public Class[]<?> getSpecificTargetClasses ()
Return an array of classes for which this resolver should be called. Returning null indicates this is a general resolver that can be called in an attempt to resolve a property on any type.
Returns
- an array of classes that this resolver is suitable for (or null if a general resolver)
public TypedValue read (EvaluationContext context, Object target, String name)
Access the given target object by resolving the given property name against the given target environment.
Parameters
| context | the evaluation context in which the access is being attempted |
|---|---|
| target | the target object upon which the property is being accessed |
| name | the name of the property being accessed |
Returns
- a TypedValue object wrapping the property value read and a type descriptor for it
Throws
| AccessException |
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public void write (EvaluationContext context, Object target, String name, Object newValue)
Read only. No-op.
Parameters
| context | the evaluation context in which the access is being attempted |
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| target | the target object upon which the property is being accessed |
| name | the name of the property being accessed |
| newValue | the new value for the property |
Throws
| AccessException |
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