Class ObjectPropertyAccessor

java.lang.Object

ognl.ObjectPropertyAccessor

All Implemented Interfaces:

PropertyAccessor

Direct Known Subclasses:

ArrayPropertyAccessor, EnumerationPropertyAccessor, IteratorPropertyAccessor, ListPropertyAccessor, SetPropertyAccessor

public class ObjectPropertyAccessor
extends Object
implements PropertyAccessor

Implementation of PropertyAccessor that uses reflection on the target object's class to find a field or a pair of set/get methods with the given property name.

Constructor Summary

Constructors

Constructor	Description
ObjectPropertyAccessor()

Method Summary

Modifier and Type	Method	Description
Object	getPossibleProperty(OgnlContext context, Object target, String name)	Returns OgnlRuntime.NotFound if the property does not exist.
Object	getProperty(OgnlContext context, Object target, Object oname)	Extracts and returns the property of the given name from the given target object.
Class<?>	getPropertyClass(OgnlContext context, Object target, Object index)
String	getSourceAccessor(OgnlContext context, Object target, Object index)	Returns a java string representing the textual method that should be called to access a particular element.
String	getSourceSetter(OgnlContext context, Object target, Object index)	Returns a java string representing the textual method that should be called to set a particular element.
boolean	hasGetProperty(OgnlContext context, Object target, Object oname)
boolean	hasSetProperty(OgnlContext context, Object target, Object oname)
Object	setPossibleProperty(OgnlContext context, Object target, String name, Object value)	Returns OgnlRuntime.NotFound if the property does not exist.
void	setProperty(OgnlContext context, Object target, Object oname, Object value)	Sets the value of the property of the given name in the given target object.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ObjectPropertyAccessor

public ObjectPropertyAccessor()

Method Details

getPossibleProperty

public Object getPossibleProperty(OgnlContext context,
 Object target,
 String name)
                           throws OgnlException

Returns OgnlRuntime.NotFound if the property does not exist.

Parameters:

context - the current execution context.

target - the object to get the property from.

name - the name of the property to get.

Returns:

the current value of the given property in the given object.

Throws:

OgnlException - if there is an error locating the property in the given object.

setPossibleProperty

public Object setPossibleProperty(OgnlContext context,
 Object target,
 String name,
 Object value)
                           throws OgnlException

Returns OgnlRuntime.NotFound if the property does not exist.

Parameters:

context - the current execution context.

target - the object to set the property in.

name - the name of the property to set.

value - the new value for the property.

Returns:

the Object result of the property set operation.

Throws:

OgnlException - if there is an error setting the property in the given object.

hasGetProperty

public boolean hasGetProperty(OgnlContext context,
 Object target,
 Object oname)
                       throws OgnlException

Throws:

OgnlException

hasSetProperty

public boolean hasSetProperty(OgnlContext context,
 Object target,
 Object oname)
                       throws OgnlException

Throws:

OgnlException

getProperty

public Object getProperty(OgnlContext context,
 Object target,
 Object oname)
                   throws OgnlException

Description copied from interface: PropertyAccessor

Extracts and returns the property of the given name from the given target object.

Specified by:

getProperty in interface PropertyAccessor

Parameters:

context - The current execution context.

target - the object to get the property from

oname - the name of the property to get.

Returns:

the current value of the given property in the given object

Throws:

OgnlException - if there is an error locating the property in the given object

setProperty

public void setProperty(OgnlContext context,
 Object target,
 Object oname,
 Object value)
                 throws OgnlException

Description copied from interface: PropertyAccessor

Sets the value of the property of the given name in the given target object.

Specified by:

setProperty in interface PropertyAccessor

Parameters:

context - The current execution context.

target - the object to set the property in

oname - the name of the property to set

value - the new value for the property.

Throws:

OgnlException - if there is an error setting the property in the given object

getPropertyClass

public Class<?> getPropertyClass(OgnlContext context,
 Object target,
 Object index)

getSourceAccessor

public String getSourceAccessor(OgnlContext context,
 Object target,
 Object index)

Description copied from interface: PropertyAccessor

Returns a java string representing the textual method that should be called to access a particular element. (ie "get")

Specified by:

getSourceAccessor in interface PropertyAccessor

Parameters:

context - The current execution context.

target - The current object target on the expression tree being evaluated.

index - The index object that will be placed inside the string to access the value.

Returns:

The source accessor method to call.

getSourceSetter

public String getSourceSetter(OgnlContext context,
 Object target,
 Object index)

Description copied from interface: PropertyAccessor

Returns a java string representing the textual method that should be called to set a particular element. (ie "set")

Specified by:

getSourceSetter in interface PropertyAccessor

Parameters:

context - The current execution context.

target - The current object target on the expression tree being evaluated.

index - The index object that will be placed inside the string to set the value.

Returns:

The source setter method to call.