org.vizzini.database
Class Association

java.lang.Object
  org.vizzini.database.Association

All Implemented Interfaces:

IAssociation

 class Association
extends Object
implements IAssociation

Provides an instance of a join which allows fetching, associating, and disassociating Records.

Since:

v0.3

Version:

v0.3

Author:

Jeffrey M. Thompson

Constructor Summary

Association(IDatabase database, JoinData joinData, boolean forward)
Construct this object.

Method Summary

void	associate(IRecord record0, IRecord record1) Associate the given Records through my join.
String	constructSelectExpression(IRecord record) Construct a select expression based upon my join.
void	disassociate(IRecord record0, IRecord record1) Disassociate the given Records through my join.
Iterator	getItems() Return an iterator over items involved in my join.
JoinData	getJoinData() Return the join data.
String	getTableName() Return the "other" table name based upon my forward flag.
boolean	isForward() Return the forward flag.
boolean	isJunction() Return true if my join data represents a junction.
String	toDebugString() Return a debug string representation of this object.
String	toString() Return a string representation of this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

Association

public Association(IDatabase database,
                   JoinData joinData,
                   boolean forward)

Construct this object.

Parameters:

database - The database.

joinData - The join data.

forward - Flag indicating if this is forward along the join.

Since:

v0.3

Method Detail

associate

public void associate(IRecord record0,
                      IRecord record1)
               throws SQLException

Associate the given Records through my join.

Specified by:

associate in interface IAssociation

Throws:

SQLException

Since:

v0.3

constructSelectExpression

public String constructSelectExpression(IRecord record)

Construct a select expression based upon my join.

Specified by:

constructSelectExpression in interface IAssociation

Since:

v0.3

disassociate

public void disassociate(IRecord record0,
                         IRecord record1)
                  throws SQLException

Disassociate the given Records through my join.

Specified by:

disassociate in interface IAssociation

Throws:

SQLException

Since:

v0.3

getItems

public Iterator getItems()
                  throws SQLException

Return an iterator over items involved in my join. Which table the items come from depends upon the forward flag.

Specified by:

getItems in interface IAssociation

Throws:

SQLException

Since:

v0.3

getJoinData

public JoinData getJoinData()

Return the join data.

Specified by:

getJoinData in interface IAssociation

Since:

v0.3

getTableName

public String getTableName()

Return the "other" table name based upon my forward flag.

Specified by:

getTableName in interface IAssociation

Since:

v0.3

isForward

public boolean isForward()

Return the forward flag.

Specified by:

isForward in interface IAssociation

Since:

v0.3

isJunction

public boolean isJunction()

Return true if my join data represents a junction.

Specified by:

isJunction in interface IAssociation

Since:

v0.3

toDebugString

public String toDebugString()

Return a debug string representation of this object.

Specified by:

toDebugString in interface IAssociation

Since:

v0.3

toString

public String toString()

Return a string representation of this object.

Specified by:

toString in interface IAssociation

Overrides:

toString in class Object

Since:

v0.3