ext.ojalgo.pride

Class DataAccessObject<EB extends EntityBean>

java.lang.Object

ext.ojalgo.pride.DataAccessObject<EB>

All Implemented Interfaces:

Comparable<DataAccessObject<EB>>

public abstract class DataAccessObject<EB extends EntityBean>
extends Object
implements Comparable<DataAccessObject<EB>>

BusinessObject

The BusinessObject represents the data client. It is the object that requires access to the data source to obtain and store data. A BusinessObject may be implemented as a session bean, entity bean, or some other Java object, in addition to a servlet or helper bean that accesses the data source.

DataAccessObject

The DataAccessObject is the primary object of this pattern. The DataAccessObject abstracts the underlying data access implementation for the BusinessObject to enable transparent access to the data source. The BusinessObject also delegates data load and store operations to the DataAccessObject.

DataSource

This represents a data source implementation. A data source could be a database such as an RDBMS, OODBMS, XML repository, flat file system, and so forth. A data source can also be another system (legacy/mainframe), service (B2B service or credit card bureau), or some kind of repository (LDAP).

TransferObject

This represents a Transfer Object used as a data carrier. The DataAccessObject may use a Transfer Object to return data to the client. The DataAccessObject may also receive the data from the client in a Transfer Object to update the data in the data source.

Author:

apete

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	DataAccessObject.BusinessFactory<DAO extends DataAccessObject<?>>

Constructor Summary

Constructors

Constructor and Description
DataAccessObject(EditingContext anEditingContext, Class<EB> aType)
DataAccessObject(EditingContext anEditingContext, DataSnapshot aSnapshot)

Method Summary

Modifier and Type	Method and Description
int	compareTo(DataAccessObject<EB> aBO)
boolean	equals(Object obj)
EditingContext	getEditingContext()
EB	getTransferObject()
int	hashCode()
abstract String	toDisplayString()
String	toKeyString()
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DataAccessObject

public DataAccessObject(EditingContext anEditingContext,
                        Class<EB> aType)

DataAccessObject

public DataAccessObject(EditingContext anEditingContext,
                        DataSnapshot aSnapshot)

Method Detail

compareTo

public int compareTo(DataAccessObject<EB> aBO)

Specified by:

compareTo in interface Comparable<DataAccessObject<EB extends EntityBean>>

equals

public final boolean equals(Object obj)

Overrides:

equals in class Object

getEditingContext

public final EditingContext getEditingContext()

getTransferObject

public final EB getTransferObject()

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

toDisplayString

public abstract String toDisplayString()

toKeyString

public final String toKeyString()

toString

public String toString()

Overrides:

toString in class Object