org.alphadisplaytag.util
Class BeanListDb

java.lang.Object
  org.alphadisplaytag.util.BeanListDb

public class BeanListDb

extends java.lang.Object

BeanListDb creates a Virtual Database for objects stored in a List.
Features:
1. Reflection is used to find all the accessor methods (getXXX) for the object stored in the list.
2. Using these found accessor methods, the virtual database can be keyed and accessed base on any of the found columns.
A default column is automatically assigned if the key accessor method, key column, is not defined.

Version:

$Revision: 1.0 $ ($Author: pchauvet $)

Author:

Philip Jahmani Chauvet

Constructor Summary

BeanListDb()
Default constructor.

BeanListDb(java.util.List list)
From the bean object, get the accessor methods, set the list size, get the default key and create a list containing the object keys (accessor methods).

Method Summary

java.lang.String	getDefaultColumn() If no default column is provided the first string accessor method is retrieve.
java.lang.String	getKeyColumn() Get the key column.
java.util.List	getList() Get the list of bean object.
java.util.List	getListKeys() Get the accessor methods in a list
java.util.List	getListKeys(java.lang.String column) Create the accessor methods (key columns ) as a list.
int	getListSize() Get the list size.
java.lang.String	getObjectAccessors() Get the accessor methods as a string produced by reflections access formatted as [ column1, ..., columnx ].
boolean	isValidColumn(java.lang.String column) Is the column part of the bean object in the list.
void	setList(java.util.List list) Set the list and create the accessor methods.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanListDb

public BeanListDb()

Default constructor.

BeanListDb

public BeanListDb(java.util.List list)
           throws java.lang.Exception

From the bean object, get the accessor methods, set the list size, get the default key and create a list containing the object keys (accessor methods).

Method Detail

setList

public void setList(java.util.List list)
             throws java.lang.Exception

Set the list and create the accessor methods.

Throws:

java.lang.Exception

getObjectAccessors

public java.lang.String getObjectAccessors()

Get the accessor methods as a string produced by reflections access formatted as [ column1, ..., columnx ].

getListKeys

public java.util.List getListKeys()

Get the accessor methods in a list

Returns:

List Accessor methods

getListKeys

public java.util.List getListKeys(java.lang.String column)
                           throws java.lang.Exception

Create the accessor methods (key columns ) as a list. If the desired column is not in the object and exception is throw.

Parameters:

column - The accessor method (key column) in the object.

Returns:

List Accessor methods in a list.

Throws:

java.lang.Exception

getKeyColumn

public java.lang.String getKeyColumn()

Get the key column.

Returns:

String The key accessor method.

getListSize

public int getListSize()

Get the list size.

Returns:

int The list size.

getList

public java.util.List getList()

Get the list of bean object.

Returns:

List List of bean object.

getDefaultColumn

public java.lang.String getDefaultColumn()

If no default column is provided the first string accessor method is retrieve.

Returns:

String The default column.

isValidColumn

public boolean isValidColumn(java.lang.String column)

Is the column part of the bean object in the list.

Returns:

boolean True if the column is in the objecte, else false.

toString

public java.lang.String toString()