edu.udo.cs.miningmart.m4.core
Class OperatorGroup

java.lang.Object
  edu.udo.cs.miningmart.m4.core.OperatorGroup

All Implemented Interfaces:

OperatorGroup, java.io.Serializable

public class OperatorGroup

extends java.lang.Object

implements OperatorGroup, java.io.Serializable

Version:

$Id: OperatorGroup.java,v 1.3 2006/04/11 14:10:14 euler Exp $

Author:

Martin Scholz

See Also:

Serialized Form

Field Summary

static java.lang.String	ATTRIB_OPG_OPID Name of the operator group's operator foreign key attribute
static java.lang.String	ATTRIB_OPGROUP_ID Name of the operator group primary key attribute
static java.lang.String	ATTRIB_OPGROUP_NAME Name of the operator group's name attribute
static java.lang.String	ATTRIB_OPGROUP_PARENT Name of the operator group's parent group
static java.lang.String	M4_TABLE_NAME Name of the operator group m4 table

Constructor Summary

OperatorGroup(DB db)

Method Summary

java.util.Collection	getChildGroups(java.lang.Long id)
java.lang.String	getGroupName(java.lang.Long id)
Operator	getOperator(java.lang.Long id)
java.lang.Long	getParentGroup(java.lang.Long id)
java.util.Collection	getTopLevelOperatorGroups()

Methods inherited from class java.lang.Object

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

Field Detail

M4_TABLE_NAME

public static final java.lang.String M4_TABLE_NAME

Name of the operator group m4 table

See Also:

Constant Field Values

ATTRIB_OPGROUP_ID

public static final java.lang.String ATTRIB_OPGROUP_ID

Name of the operator group primary key attribute

See Also:

Constant Field Values

ATTRIB_OPGROUP_PARENT

public static final java.lang.String ATTRIB_OPGROUP_PARENT

Name of the operator group's parent group

See Also:

Constant Field Values

ATTRIB_OPG_OPID

public static final java.lang.String ATTRIB_OPG_OPID

Name of the operator group's operator foreign key attribute

See Also:

Constant Field Values

ATTRIB_OPGROUP_NAME

public static final java.lang.String ATTRIB_OPGROUP_NAME

Name of the operator group's name attribute

See Also:

Constant Field Values

Constructor Detail

OperatorGroup

public OperatorGroup(DB db)
              throws M4Exception,
                     DbConnectionClosed

Method Detail

getTopLevelOperatorGroups

public java.util.Collection getTopLevelOperatorGroups()

Specified by:

getTopLevelOperatorGroups in interface OperatorGroup

Returns:

a Collection of IDs of type Long representing operator groups. This IDs can be used to query further information about the group using the methods of this class.

getGroupName

public java.lang.String getGroupName(java.lang.Long id)

Specified by:

getGroupName in interface OperatorGroup

Parameters:

id - the ID of an operator group

Returns:

the name of the operator group with the specified ID

getOperator

public Operator getOperator(java.lang.Long id)
                     throws M4Exception

Specified by:

getOperator in interface OperatorGroup

Parameters:

id - the ID of an operator group

Returns:

an Operator if the ID refers to a single operator entry, rather than to a group.

Throws:

M4Exception

getParentGroup

public java.lang.Long getParentGroup(java.lang.Long id)

Specified by:

getParentGroup in interface OperatorGroup

Parameters:

id - the ID of an operator group

Returns:

the ID of the parent operator group or null, if the ID belongs to a top-level operator group.

getChildGroups

public java.util.Collection getChildGroups(java.lang.Long id)

Specified by:

getChildGroups in interface OperatorGroup

Parameters:

id - the ID of an operator group

Returns:

a Collection of the ID of all child operator groups (or operator instances) referred to with their Long IDs. If the specified id is unknown or does not contain sub-elements, then null is returned.