com.gisgraphy.service.impl

Class GenericManagerImpl<T,PK extends Serializable>

java.lang.Object

com.gisgraphy.service.impl.GenericManagerImpl<T,PK>

Type Parameters:

T - a type variable

PK - the primary key for that type

All Implemented Interfaces:

GenericManager<T,PK>

public class GenericManagerImpl<T,PK extends Serializable>
extends Object
implements GenericManager<T,PK>

This class serves as the Base class for all other Managers - namely to hold common CRUD methods that they might all use. You should only need to extend this class when your require custom CRUD logic.

To register this class in your Spring context file, use the following XML.

     <bean id="userManager" class="com.gisgraphy.service.impl.GenericManagerImpl">
         <constructor-arg>
             <bean class="com.gisgraphy.dao.hibernate.GenericDaoHibernate">
                 <constructor-arg value="com.gisgraphy.model.User"/>
                 <property name="sessionFactory" ref="sessionFactory"/>
             </bean>
         </constructor-arg>
     </bean>
 

If you're using iBATIS instead of Hibernate, use:

     <bean id="userManager" class="com.gisgraphy.service.impl.GenericManagerImpl">
         <constructor-arg>
             <bean class="com.gisgraphy.dao.ibatis.GenericDaoiBatis">
                 <constructor-arg value="com.gisgraphy.model.User"/>
                 <property name="dataSource" ref="dataSource"/>
                 <property name="sqlMapClient" ref="sqlMapClient"/>
             </bean>
         </constructor-arg>
     </bean>
 

Author:

Matt Raible

Field Summary

Fields

Modifier and Type	Field and Description
protected GenericDao<T,PK>	genericDao GenericDao instance, set by constructor of this class
protected org.apache.commons.logging.Log	log Log variable for all child classes.

Constructor Summary

Constructors

Constructor and Description
GenericManagerImpl(GenericDao<T,PK> genericDao) Public constructor for creating a new GenericManagerImpl.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	exists(PK id) Checks for existence of an object of type T using the id arg.
T	get(PK id) Generic method to get an object based on class and identifier.
List<T>	getAll() Generic method used to get all objects of a particular type.
void	remove(PK id) Generic method to delete an object based on class and id
T	save(T object) Generic method to save an object - handles both update and insert.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected final org.apache.commons.logging.Log log

Log variable for all child classes. Uses LogFactory.getLog(getClass()) from Commons Logging

genericDao

protected GenericDao<T,PK extends Serializable> genericDao

GenericDao instance, set by constructor of this class

Constructor Detail

GenericManagerImpl

public GenericManagerImpl(GenericDao<T,PK> genericDao)

Public constructor for creating a new GenericManagerImpl.

Parameters:

genericDao - the GenericDao to use for persistence

Method Detail

getAll

public List<T> getAll()

Generic method used to get all objects of a particular type. This is the same as lookup up all rows in a table.

Specified by:

getAll in interface GenericManager<T,PK extends Serializable>

Returns:

List of populated objects

get

public T get(PK id)

Generic method to get an object based on class and identifier. An ObjectRetrievalFailureException Runtime Exception is thrown if nothing is found.

Specified by:

get in interface GenericManager<T,PK extends Serializable>

Parameters:

id - the identifier (primary key) of the object to get

Returns:

a populated object

See Also:

ObjectRetrievalFailureException

exists

public boolean exists(PK id)

Checks for existence of an object of type T using the id arg.

Specified by:

exists in interface GenericManager<T,PK extends Serializable>

Parameters:

id - the identifier (primary key) of the object to get

Returns:

- true if it exists, false if it doesn't

save

public T save(T object)

Generic method to save an object - handles both update and insert.

Specified by:

save in interface GenericManager<T,PK extends Serializable>

Parameters:

object - the object to save

Returns:

the updated object

remove

public void remove(PK id)

Generic method to delete an object based on class and id

Specified by:

remove in interface GenericManager<T,PK extends Serializable>

Parameters:

id - the identifier (primary key) of the object to remove