biz.hammurapi.sql
Class SimpleRelationship

java.lang.Object
  biz.hammurapi.sql.SimpleRelationship

All Implemented Interfaces:

ColumnChangeListener, Relationship

public class SimpleRelationship
extends java.lang.Object
implements Relationship, ColumnChangeListener

Base class for composite relationships where subitems exist only as part of the whole and removal of item from relationship is equivalent to deletion of the item.

Author:

Pavel Vlasov

Field Summary

protected java.util.Collection	deleted
protected java.util.Collection	inserted
protected java.lang.String	tableName

Constructor Summary

SimpleRelationship(DatabaseObject owner, java.lang.Class itemClass, java.lang.String tableName, java.lang.String[][] keyInfo, boolean isLazy)

Method Summary

void	add(DatabaseObject item)
java.lang.Class	getItemType()
boolean	isLazy()
boolean	isModified()
void	load(SQLProcessor processor, java.util.Collection receiver)
void	onChange(Column column)
void	remove(IDatabaseObject item)
void	setMaster(java.util.Collection master) Callback method to propagate updates
void	store(SQLProcessor processor)
void	update(SQLProcessor processor, IDatabaseObject subItem) Updates modified relationship items.

Methods inherited from class java.lang.Object

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

Field Detail

inserted

protected java.util.Collection inserted

deleted

protected java.util.Collection deleted

tableName

protected java.lang.String tableName

Constructor Detail

SimpleRelationship

public SimpleRelationship(DatabaseObject owner,
                          java.lang.Class itemClass,
                          java.lang.String tableName,
                          java.lang.String[][] keyInfo,
                          boolean isLazy)

Parameters:

owner - Relationship owner.

tableName - Table where child item are stored.

keyInfo - Mapping of owner's primary key columns to child foreign key columns.

isLazy - indicates whether relationship is lazy.

Method Detail

isLazy

public boolean isLazy()

Specified by:

isLazy in interface Relationship

store

public void store(SQLProcessor processor)
           throws java.sql.SQLException

Specified by:

store in interface Relationship

Throws:

java.sql.SQLException

add

public void add(DatabaseObject item)

Specified by:

add in interface Relationship

remove

public void remove(IDatabaseObject item)

Specified by:

remove in interface Relationship

load

public void load(SQLProcessor processor,
                 java.util.Collection receiver)
          throws java.sql.SQLException

Specified by:

load in interface Relationship

Throws:

java.sql.SQLException

isModified

public boolean isModified()

Specified by:

isModified in interface Relationship

update

public void update(SQLProcessor processor,
                   IDatabaseObject subItem)
            throws java.sql.SQLException

Description copied from interface: Relationship

Updates modified relationship items.

Specified by:

update in interface Relationship

Throws:

java.sql.SQLException

getItemType

public java.lang.Class getItemType()

Specified by:

getItemType in interface Relationship

onChange

public void onChange(Column column)

Specified by:

onChange in interface ColumnChangeListener

setMaster

public void setMaster(java.util.Collection master)

Description copied from interface: Relationship

Callback method to propagate updates

Specified by:

setMaster in interface Relationship