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java.lang.Object org.springframework.expression.spel.support.ReflectivePropertyAccessor.OptimalPropertyAccessor
static class ReflectivePropertyAccessor.OptimalPropertyAccessor
An optimized form of a PropertyAccessor that will use reflection but only knows how to access a particular property on a particular class. This is unlike the general ReflectivePropertyResolver which manages a cache of methods/fields that may be invoked to access different properties on different classes. This optimal accessor exists because looking up the appropriate reflective object by class/name on each read is not cheap.
Field Summary | |
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private java.lang.reflect.Member |
member
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private boolean |
needsToBeMadeAccessible
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private TypeDescriptor |
typeDescriptor
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Constructor Summary | |
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ReflectivePropertyAccessor.OptimalPropertyAccessor(ReflectivePropertyAccessor.InvokerPair target)
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Method Summary | |
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boolean |
canRead(EvaluationContext context,
java.lang.Object target,
java.lang.String name)
Called to determine if a resolver instance is able to access a specified property on a specified target object. |
boolean |
canWrite(EvaluationContext context,
java.lang.Object target,
java.lang.String name)
Called to determine if a resolver instance is able to write to a specified property on a specified target object. |
java.lang.Class[] |
getSpecificTargetClasses()
Return an array of classes for which this resolver should be called. |
TypedValue |
read(EvaluationContext context,
java.lang.Object target,
java.lang.String name)
Called to read a property from a specified target object |
void |
write(EvaluationContext context,
java.lang.Object target,
java.lang.String name,
java.lang.Object newValue)
Called to write to a property on a specified target object. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private final java.lang.reflect.Member member
private final TypeDescriptor typeDescriptor
private final boolean needsToBeMadeAccessible
Constructor Detail |
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ReflectivePropertyAccessor.OptimalPropertyAccessor(ReflectivePropertyAccessor.InvokerPair target)
Method Detail |
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public java.lang.Class[] getSpecificTargetClasses()
PropertyAccessor
getSpecificTargetClasses
in interface PropertyAccessor
public boolean canRead(EvaluationContext context, java.lang.Object target, java.lang.String name) throws AccessException
PropertyAccessor
canRead
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessed
AccessException
- if there is any problem determining whether the property can be readpublic TypedValue read(EvaluationContext context, java.lang.Object target, java.lang.String name) throws AccessException
PropertyAccessor
read
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessed
AccessException
- if there is any problem accessing the property valuepublic boolean canWrite(EvaluationContext context, java.lang.Object target, java.lang.String name) throws AccessException
PropertyAccessor
canWrite
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessed
AccessException
- if there is any problem determining whether the property can be written topublic void write(EvaluationContext context, java.lang.Object target, java.lang.String name, java.lang.Object newValue) throws AccessException
PropertyAccessor
write
in interface PropertyAccessor
context
- the evaluation context in which the access is being attemptedtarget
- the target object upon which the property is being accessedname
- the name of the property being accessednewValue
- the new value for the property
AccessException
- if there is any problem writing to the property value
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