com.googlecode.genericdao.dao.hibernate.original

Class DAODispatcher

java.lang.Object

com.googlecode.genericdao.dao.BaseDAODispatcher

com.googlecode.genericdao.dao.hibernate.original.DAODispatcher

All Implemented Interfaces:

GeneralDAO

public class DAODispatcher
extends BaseDAODispatcher
implements GeneralDAO

This is an implementation of GeneralDAO that delegates to other DAOs depending on what entity class is being processed.

Set the specificDAOs Map in order to configure which DAO will be used for which entity class. If the map contains no entry for a given class, the generalDAO is used.

For example to dispatch operation on com.myproject.model.Customer to a DAO called customerDAO, set the map like this. (Of course tools like Spring can be used to do this configuration more elequently.)

 Map specificDAOs = new HashMap();
 specificDAOs.put("com.myproject.model.Customer", customerDAO);
 
 DAODispatcher dispatcher = new DAODispatcher();
 dispatcher.setSpecificDAOs(specificDAOs);
 

Author:

dwolverton

Field Summary

Fields

Modifier and Type	Field and Description
protected GeneralDAO	generalDAO

Fields inherited from class com.googlecode.genericdao.dao.BaseDAODispatcher

specificDAOs

Constructor Summary

Constructors

Constructor and Description
DAODispatcher()

Method Summary

Methods

Modifier and Type	Method and Description
int	count(ISearch search) Returns the total number of results that would be returned using the given ISearch if there were no paging or maxResult limits.
void	create(Object object) Add the specified object as a new entry in the datastore.
boolean	createOrUpdate(Object object) If the id of the object is null or zero, create, otherwise update.
boolean	deleteById(Class<?> klass, Serializable id) Remove the object with the specified id and class from the datastore.
boolean	deleteEntity(Object object) Remove the specified object from the datastore.
<T> T	fetch(Class<T> klass, Serializable id) Get the object with the specified id and class from the datastore.
<T> List<T>	fetchAll(Class<T> klass) Get a list of all the objects of the specified type.
void	flush() Deprecated. use flush(Class)
void	flush(Class<?> klass)
Filter	getFilterFromExample(Object example) Generates a search filter from the given example using default options.
Filter	getFilterFromExample(Object example, ExampleOptions options) Generates a search filter from the given example using the specified options.
boolean	isConnected(Object object) Returns true if the object is connected to the current Hibernate session.
void	refresh(Object object) Refresh the content of the given entity from the current datastore state.
List	search(ISearch search) Search for objects given the search parameters in the specified ISearch object.
SearchResult	searchAndCount(ISearch search) Returns a SearchResult object that includes the list of results like search() and the total length like searchLength.
Object	searchUnique(ISearch search) ISearch for a single result using the given parameters.
void	setGeneralDAO(GeneralDAO generalDAO) GeneralDAO has default implementations for the standard DAO methods.
void	update(Object object) Update the corresponding object in the datastore with the properties of the specified object.

Methods inherited from class com.googlecode.genericdao.dao.BaseDAODispatcher

callMethod, callMethod, getSpecificDAO, getTypeFromArray, getUniformArrayType, setSpecificDAOs

Methods inherited from class java.lang.Object

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

Field Detail

generalDAO

protected GeneralDAO generalDAO

Constructor Detail

DAODispatcher

public DAODispatcher()

Method Detail

setGeneralDAO

public void setGeneralDAO(GeneralDAO generalDAO)

GeneralDAO has default implementations for the standard DAO methods. Which model class it uses is specified when calling the particular method.

create

public void create(Object object)

Description copied from interface: GeneralDAO

Add the specified object as a new entry in the datastore.

Specified by:

create in interface GeneralDAO

createOrUpdate

public boolean createOrUpdate(Object object)

Description copied from interface: GeneralDAO

If the id of the object is null or zero, create, otherwise update.

Specified by:

createOrUpdate in interface GeneralDAO

Returns:

true if create; false if update.

deleteById

public boolean deleteById(Class<?> klass,
                 Serializable id)

Description copied from interface: GeneralDAO

Remove the object with the specified id and class from the datastore.

Specified by:

deleteById in interface GeneralDAO

Returns:

true if the object is found in the datastore and removed, false if the item is not found.

deleteEntity

public boolean deleteEntity(Object object)

Description copied from interface: GeneralDAO

Remove the specified object from the datastore.

Specified by:

deleteEntity in interface GeneralDAO

Returns:

true if the object is found in the datastore and removed, false if the item is not found.

fetch

public <T> T fetch(Class<T> klass,
          Serializable id)

Description copied from interface: GeneralDAO

Get the object with the specified id and class from the datastore.

Specified by:

fetch in interface GeneralDAO

fetchAll

public <T> List<T> fetchAll(Class<T> klass)

Description copied from interface: GeneralDAO

Get a list of all the objects of the specified type.

Specified by:

fetchAll in interface GeneralDAO

flush

public void flush()

Deprecated. use flush(Class)

Description copied from interface: GeneralDAO

Flushes changes in the Hibernate session to the datastore.

Specified by:

flush in interface GeneralDAO

flush

public void flush(Class<?> klass)

isConnected

public boolean isConnected(Object object)

Description copied from interface: GeneralDAO

Returns true if the object is connected to the current Hibernate session.

Specified by:

isConnected in interface GeneralDAO

refresh

public void refresh(Object object)

Description copied from interface: GeneralDAO

Refresh the content of the given entity from the current datastore state.

Specified by:

refresh in interface GeneralDAO

search

public List search(ISearch search)

Description copied from interface: GeneralDAO

Search for objects given the search parameters in the specified ISearch object.

Specified by:

search in interface GeneralDAO

searchAndCount

public SearchResult searchAndCount(ISearch search)

Description copied from interface: GeneralDAO

Returns a SearchResult object that includes the list of results like search() and the total length like searchLength.

Specified by:

searchAndCount in interface GeneralDAO

count

public int count(ISearch search)

Description copied from interface: GeneralDAO

Returns the total number of results that would be returned using the given ISearch if there were no paging or maxResult limits.

Specified by:

count in interface GeneralDAO

searchUnique

public Object searchUnique(ISearch search)
                    throws org.hibernate.NonUniqueResultException

Description copied from interface: GeneralDAO

ISearch for a single result using the given parameters.

Specified by:

searchUnique in interface GeneralDAO

Throws:

org.hibernate.NonUniqueResultException

update

public void update(Object object)

Description copied from interface: GeneralDAO

Update the corresponding object in the datastore with the properties of the specified object. The corresponding object is determined by id.

Specified by:

update in interface GeneralDAO

getFilterFromExample

public Filter getFilterFromExample(Object example)

Description copied from interface: GeneralDAO

Generates a search filter from the given example using default options.

Specified by:

getFilterFromExample in interface GeneralDAO

getFilterFromExample

public Filter getFilterFromExample(Object example,
                          ExampleOptions options)

Description copied from interface: GeneralDAO

Generates a search filter from the given example using the specified options.

Specified by:

getFilterFromExample in interface GeneralDAO