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java.lang.Objectorg.springframework.expression.spel.support.ReflectivePropertyAccessor
public class ReflectivePropertyAccessor
Simple PropertyAccessor that uses reflection to access properties for reading and writing. A property can be accessed if it is accessible as a field on the object or through a getter (if being read) or a setter (if being written).
Field Summary | |
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protected Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,org.springframework.expression.spel.support.ReflectivePropertyAccessor.InvokerPair> |
readerCache
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protected Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,TypeDescriptor> |
typeDescriptorCache
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protected Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,Member> |
writerCache
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Constructor Summary | |
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ReflectivePropertyAccessor()
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Method Summary | |
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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. |
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. |
PropertyAccessor |
createOptimalAccessor(EvaluationContext eContext,
Object target,
String name)
Attempt to create an optimized property accessor tailored for a property of a particular name on a particular class. |
protected Field |
findField(String name,
Class<?> clazz,
boolean mustBeStatic)
Find a field of a certain name on a specified class |
protected Method |
findGetterForProperty(String propertyName,
Class<?> clazz,
boolean mustBeStatic)
Find a getter method for the specified property. |
protected Method |
findSetterForProperty(String propertyName,
Class<?> clazz,
boolean mustBeStatic)
Find a setter method for the specified property. |
Class<?>[] |
getSpecificTargetClasses()
Return an array of classes for which this resolver should be called. |
TypedValue |
read(EvaluationContext context,
Object target,
String name)
Called to read a property from a specified target object |
void |
write(EvaluationContext context,
Object target,
String name,
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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protected Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,org.springframework.expression.spel.support.ReflectivePropertyAccessor.InvokerPair> readerCache
protected Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,Member> writerCache
protected Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,TypeDescriptor> typeDescriptorCache
Constructor Detail |
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public ReflectivePropertyAccessor()
Method Detail |
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public Class<?>[] getSpecificTargetClasses()
PropertyAccessor
getSpecificTargetClasses
in interface PropertyAccessor
public boolean canRead(EvaluationContext context, Object target, 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, Object target, 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, Object target, 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, Object target, String name, 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 valueprotected Method findGetterForProperty(String propertyName, Class<?> clazz, boolean mustBeStatic)
protected Method findSetterForProperty(String propertyName, Class<?> clazz, boolean mustBeStatic)
protected Field findField(String name, Class<?> clazz, boolean mustBeStatic)
public PropertyAccessor createOptimalAccessor(EvaluationContext eContext, Object target, String name)
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