fido.db
Class ObjectTable

java.lang.Object
  |
  +--fido.db.ObjectTable

public class ObjectTable

extends java.lang.Object

Constructor Summary

ObjectTable()

Method Summary

java.lang.String	buildInList(int objectId)
boolean	contains(int id)
void	deleteClass(int objectId, boolean tree) Removes the Class name objectId from the Hierarchy.
void	deleteInstance(int instanceId) Deletes an InstanceObject.
java.util.Collection	findInstance(int subtreeRoot, BooleanTree attrTree, BooleanTree prepTree)
java.util.Collection	findObject(int objectId)
int	hashCode(int id)
int	hashCode(java.lang.String id)
int	instantiate(int objectId, java.lang.String description) Creates a new InstanceObject from the ClassObject objectId The new object will duplicate all of the links of the parent ClassObject.
boolean	isSubclassOf(int objectId, int parent) Looks for a class named parent as any parent class of objectId, until the root class Object is reached.
void	modify(int id, java.lang.String description)
java.util.Collection	pathToObject(int objectId) Deletes an InstanceObject.
int	subclass(int objectId, java.lang.String description) Creates a new ClassObject cloning objectId with a LinkName Isa pointing to the parent class.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectTable

public ObjectTable()

Method Detail

isSubclassOf

public boolean isSubclassOf(int objectId,
                            int parent)
                     throws FidoDatabaseException,
                            ObjectNotFoundException

Looks for a class named parent as any parent class of objectId, until the root class Object is reached.

Parameters:

objectId - starting class name

parent - name of the class to look for as a parent

Throws:

ObjectNotFoundException - thrown if objectId is not the name of a valid ClassObject.

java.sql.SQLException - thrown if any IO Exception occurs while reading classes.

FidoDatabaseException

contains

public boolean contains(int id)
                 throws FidoDatabaseException

FidoDatabaseException

subclass

public int subclass(int objectId,
                    java.lang.String description)
             throws FidoDatabaseException,
                    ObjectNotFoundException

Creates a new ClassObject cloning objectId with a LinkName Isa pointing to the parent class. Also, the reverse link field of Isa will be added to the parent class objectId adding the new class as a child. The name of the new object will be a unique generated name, which will be returned as a String from the call.

Parameters:

objectId - name of the parent class to clone

Returns:

name of the new ClassObject

Throws:

ObjectNotFoundException - thrown if the class object objectId is not found

java.sql.SQLException - thrown if any IO Exception occurs while reading parent class or writting the new class.

FidoDatabaseException

deleteClass

public void deleteClass(int objectId,
                        boolean tree)
                 throws ObjectNotFoundException,
                        FidoDatabaseException,
                        CannotDeleteRootObjectException,
                        ClassLinkTypeNotFoundException

Removes the Class name objectId from the Hierarchy. To maintain hierarchial integrity, the parameter tree specifies what should happen to the children ClassObjects of the object:

• if tree is true, all of the children are removed
• if tree is false, all of the children become children of the parent of the ClassObject being removed.

Any InstanceObject of the object will be removed.

Parameters:

objectId - name of the class to remove

tree - true if all subclasses should be removed, false if all children should become children of the parent

Throws:

ObjectNotFoundException - thrown if the class object objectId is not found

java.sql.SQLException - thrown if any IO Exception occurs while reading parent class or deleting the class.

CannotDeleteRootObjectException - thrown when attempting to remove the root object named Object

LinkTypeNotFoundException - System LinkType named Isa was not found

FidoDatabaseException

ClassLinkTypeNotFoundException

instantiate

public int instantiate(int objectId,
                       java.lang.String description)
                throws FidoDatabaseException,
                       ObjectNotFoundException,
                       ClassLinkTypeNotFoundException

Creates a new InstanceObject from the ClassObject objectId The new object will duplicate all of the links of the parent ClassObject. The LinkType Instance will be used to link the new Instance with the parent ClassObject. The name of the new object will be a unique generated name, which will be returned as a String from the call.

Parameters:

objectId - name of the class to create an instance from

Returns:

name of the new InstanceObject

Throws:

ObjectNotFoundException - thrown if the class object objectId is not found

LinkTypeNotFoundException - thrown if the link type Instance is not found

java.sql.SQLException - thrown if any IO Exception occurs while reading parent class or writting the new class.

FidoDatabaseException

ClassLinkTypeNotFoundException

deleteInstance

public void deleteInstance(int instanceId)
                    throws FidoDatabaseException,
                           ObjectNotFoundException

Deletes an InstanceObject.

Throws:

ObjectNotFoundException - thrown if the class object instanceName is not found

java.sql.SQLException - thrown if any IO Exception occurs while removing the object

FidoDatabaseException

buildInList

public java.lang.String buildInList(int objectId)
                             throws FidoDatabaseException,
                                    ObjectNotFoundException

FidoDatabaseException

ObjectNotFoundException

pathToObject

public java.util.Collection pathToObject(int objectId)
                                  throws FidoDatabaseException,
                                         ObjectNotFoundException

Deletes an InstanceObject.

Throws:

ObjectNotFoundException - thrown if the class object instanceName is not found

java.sql.SQLException - thrown if any IO Exception occurs while removing the object

FidoDatabaseException

modify

public void modify(int id,
                   java.lang.String description)
            throws FidoDatabaseException,
                   ObjectNotFoundException

FidoDatabaseException

ObjectNotFoundException

findObject

public java.util.Collection findObject(int objectId)
                                throws FidoDatabaseException,
                                       ObjectNotFoundException

FidoDatabaseException

ObjectNotFoundException

findInstance

public java.util.Collection findInstance(int subtreeRoot,
                                         BooleanTree attrTree,
                                         BooleanTree prepTree)
                                  throws FidoDatabaseException,
                                         BooleanSyntaxException,
                                         ObjectNotFoundException,
                                         ClassLinkTypeNotFoundException

FidoDatabaseException

BooleanSyntaxException

ObjectNotFoundException

ClassLinkTypeNotFoundException

hashCode

public int hashCode(java.lang.String id)
             throws FidoDatabaseException,
                    ObjectNotFoundException

FidoDatabaseException

ObjectNotFoundException

hashCode

public int hashCode(int id)
             throws FidoDatabaseException,
                    ObjectNotFoundException

FidoDatabaseException

ObjectNotFoundException