| java.lang.Object | |
| ↳ | org.springframework.context.expression.BeanFactoryAccessor |
Class Overview
EL property accessor that knows how to traverse the beans of a
Spring BeanFactory.
Summary
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| Public Methods | |||||||||||
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Called to determine if a resolver instance is able to access a specified property on a specified target object.
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Called to determine if a resolver instance is able to write to a specified property on a specified target object.
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Return an array of classes for which this resolver should be called.
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Called to read a property from a specified target object
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Called to write to a property on a specified target object.
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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 BeanFactoryAccessor ()
Public Methods
public boolean canRead (EvaluationContext context, Object target, String name)
Called to determine if a resolver instance is able to access a specified property on a specified target object.
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
- true if this resolver is able to read the property
Throws
| AccessException |
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public boolean canWrite (EvaluationContext context, Object target, String name)
Called to determine if a resolver instance is able to write to a specified property on a specified target object.
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
- true if this resolver is able to write to the property
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)
Called to read a property from a specified target object
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)
Called to write to a property on a specified target object. Should only succeed if canWrite() also 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 |
| newValue | the new value for the property |
Throws
| AccessException |
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