org.dmd.dmc.util

Interface UcoDataStoreIF

public interface UcoDataStoreIF

Defines an interface to some data store that allows for storage and retrieval of DmcUncheckedObject instances.

Method Summary

Modifier and Type	Method and Description
ArrayList<DmcUncheckedObject>	findObjects(String className, String attrName, String searchFor) Allows for the retrieval of a set of objects of a particular class, based on a particular attribute and a value for that attribute.
void	modifyObject(DmcUncheckedObject obj, ArrayList<NamedStringArray> newvals) Allows you to modify an existing object, probably one that you had retrieved via findObjects().
void	writeObject(DmcUncheckedObject obj) Allows you to write an object to the data store.

Method Detail

findObjects

ArrayList<DmcUncheckedObject> findObjects(String className,
                                          String attrName,
                                          String searchFor)

Allows for the retrieval of a set of objects of a particular class, based on a particular attribute and a value for that attribute.

Generally speaking, the data store would have to be maintaining an index

Parameters:

className - the class name

attrName - the name of the attribute on which the class is indexed

searchFor - the value to search for

Returns:

a list of objects that match the request; it may be empty.

Throws:

ResultException - if something wanky occurs

writeObject

void writeObject(DmcUncheckedObject obj)

Allows you to write an object to the data store.

Parameters:

obj - the object to be written

Throws:

ResultException - if something wanky occurs

modifyObject

void modifyObject(DmcUncheckedObject obj,
                  ArrayList<NamedStringArray> newvals)

Allows you to modify an existing object, probably one that you had retrieved via findObjects().

Parameters:

obj - the object to be modified

newvals - the new values for one or more attributes