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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 final Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,org.springframework.expression.spel.support.ReflectivePropertyAccessor.InvokerPair> readerCache
protected final Map<org.springframework.expression.spel.support.ReflectivePropertyAccessor.CacheKey,Member> writerCache
protected final 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)
A getter is defined as a method whose name start with the prefix 'get' and the rest of the name is the same as the property name (with the first character uppercased).
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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