org.ecoinformatics.seek.querybuilder

Class DBWhereModel

java.lang.Object

javax.swing.AbstractListModel

org.ecoinformatics.seek.querybuilder.DBWhereModel

All Implemented Interfaces:

java.io.Serializable, javax.swing.ListModel

public class DBWhereModel
extends javax.swing.AbstractListModel

This class represents the model for the JList class. The complexity here is that the model want to view everything as a a vector, but the items are actually an object tree. So the options where to:
1) Use a vecotr as the model and add the complexity to the add and remove methods (this is what was done) 2) Use the "real" data model and then when an item was asked for by index we traverse the tree to figure out the index each time.

Assuming painting occurs more often than model updates I went with approach number one

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Vector	mItems
protected DBWhereIFace	mRootObj

Fields inherited from class javax.swing.AbstractListModel

listenerList

Constructor Summary

Constructors

Constructor and Description
DBWhereModel() Default Constructor

Method Summary

Modifier and Type	Method and Description
int	add(DBWhereIFace aItem) Adds an item to the model, the parent attr MUST be set before adding item
void	add(DBWhereIFace aItem, int aInx) Adds an item to the model at a specified index, the parent attr MUST be set before adding item
protected void	buildFromWhereObj(DBWhereIFace aWhereObj) Build it from the where object
void	fillQueryDef(DBQueryDef aQueryDef) Fills QueryDef from Model
void	fireContentsChanged() Expose the ability to send the UI a notification the model has been updated
java.lang.Object	getElementAt(int index) Gets an element in the model at a specified index
protected int	getInsertionIndexFromDrag() Returns the current insertion index depending on the current drag over item
int	getSize() Returns the size of the model
void	initialize(DBWhereIFace aWhereObj) Initialize it by clearing everything and building it from the root where object
void	remove(DBWhereIFace aObj) Remove item from list, if operator, remove its closure and all the children too

Methods inherited from class javax.swing.AbstractListModel

addListDataListener, fireContentsChanged, fireIntervalAdded, fireIntervalRemoved, getListDataListeners, getListeners, removeListDataListener

Methods inherited from class java.lang.Object

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

Field Detail

mItems

protected java.util.Vector mItems

mRootObj

protected DBWhereIFace mRootObj

Constructor Detail

DBWhereModel

public DBWhereModel()

Default Constructor

Method Detail

initialize

public void initialize(DBWhereIFace aWhereObj)

Initialize it by clearing everything and building it from the root where object

Parameters:

aWhereObj -

buildFromWhereObj

protected void buildFromWhereObj(DBWhereIFace aWhereObj)

Build it from the where object

Parameters:

aWhereObj - the new object

getSize

public int getSize()

Returns the size of the model

getElementAt

public java.lang.Object getElementAt(int index)

Gets an element in the model at a specified index

getInsertionIndexFromDrag

protected int getInsertionIndexFromDrag()

Returns the current insertion index depending on the current drag over item

Returns:

the index

add

public int add(DBWhereIFace aItem)

Adds an item to the model, the parent attr MUST be set before adding item

Parameters:

aItem - item to be added, it finds the insert point via the lasted dragged object if that can't be found then it adds it as the last child of the parent.

Returns:

the index it was added at

add

public void add(DBWhereIFace aItem,
                int aInx)

Adds an item to the model at a specified index, the parent attr MUST be set before adding item

Parameters:

aItem - item to be added, it finds the insert point via the lasted dragged object if that can't be found then it adds it as the last child of the parent.

aInx - index as to where it will be added

remove

public void remove(DBWhereIFace aObj)

Remove item from list, if operator, remove its closure and all the children too

Parameters:

aObj - item to be removed

fireContentsChanged

public void fireContentsChanged()

Expose the ability to send the UI a notification the model has been updated

fillQueryDef

public void fillQueryDef(DBQueryDef aQueryDef)

Fills QueryDef from Model