com.webobjects.eocontrol
Class EOKeyValueCoding.DefaultImplementation

java.lang.Object
  |
  +--com.webobjects.eocontrol.EOKeyValueCoding.DefaultImplementation

Enclosing class:

EOKeyValueCoding

public static class EOKeyValueCoding.DefaultImplementation

extends Object

The EOKeyValueCoding.DefaultImplementation class provides the WebObjects default implementation of the EOKeyValueCoding interface.

See Also:

EOKeyValueCoding

Method Summary

static Object	storedValueForKey(Object object, String key) Retrieves the value associated with the property named key on object.
static void	takeStoredValueForKey(Object object, Object value, String key) Sets the property identified by key to value on object.

Methods inherited from class java.lang.Object

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

Method Detail

storedValueForKey

public static Object storedValueForKey(Object object,
                                       String key)

Retrieves the value associated with the property named key on object. This method is used when the value is retrieved for storage in an object store (generally, this ultimately in a database) or for inclusion in a snapshot.

The default implementation searches for a method and (if canAccessFieldsDirectly is true) for a field matching key. For example, for key "value" the search order is as follows: (a) method "_getValue"; (b) method "_value"; (c) method "_isValue"; (d) field "_value"; (e) field "_isValue"; (f) field "value"; (g) field "isValue"; (h) method "getValue"; (i) method "value"; (j) method "isValue". If an unknown key is encountered and the object implements the NSKeyValueCoding.ErrorHandling interface, handleQueryWithUnboundKey is invoked, otherwise a NSKeyValueCoding.UnknownKeyException is raised.

Parameters:

object - the object on which to operate

key - the property of object to retrieve

Returns:

object's stored value for the property identified by key

See Also:

EOKeyValueCoding.storedValueForKey(String), NSKeyValueCoding, NSKeyValueCoding.ErrorHandling

takeStoredValueForKey

public static void takeStoredValueForKey(Object object,
                                         Object value,
                                         String key)

Sets the property identified by key to value on object. This method is used to initialize the receiver with values from an object store (generally, this is ultimately from a database) or to restore a value from a snapshot.

The default implementation searches for a method and (if canAccessFieldsDirectly is true) for a field matching key. For example, for key "value" the search order is as follows: (a) method "_setValue"; (b) field "_value"; (c) field "_isValue"; (d) field "value"; (e) field "isValue"; (f) method "setValue". If an unknown key is encountered and the object implements the NSKeyValueCoding.ErrorHandling interface, handleTakeValueForUnboundKey is invoked, otherwise a NSKeyValueCoding.UnknownKeyException is raised.

Parameters:

object - the object on which to operate

value - the new value for the key property

key - the property of object to set

See Also:

EOKeyValueCoding.takeStoredValueForKey(Object, String), NSKeyValueCoding, NSKeyValueCoding.ErrorHandling