org.fryske_akademy.ejb

Class AbstractCrudService

java.lang.Object

org.fryske_akademy.ejb.AbstractCrudService

All Implemented Interfaces:

CrudReadService, CrudWriteService

@DeclareRoles(value="editor")
public abstract class AbstractCrudService
extends Object
implements CrudReadService, CrudWriteService

This base class enables you to create minimal crud service beans. All you have to do is override, implement getEntityManager and add annotation @Stateless, @Local(CrudReadService.class, CrudWriteService.class).

Inject the crud interfaces using @Inject in your frontend (problems with inhertitance and @EJB).

This base class declares appropriate transactions and an EDITOR role to protect write operations.

An injected JpqlBuilder is used for building where and order by clauses in dynamic queries, i.e. used in findPaged(int, int, java.util.Map, java.util.List, java.lang.Class) and

find(java.util.Map, java.util.List, java.lang.Integer, java.lang.Class). The JpqlBuilder is also used for setting parameter values.

Author:

eduard

Nested Class Summary

Nested classes/interfaces inherited from interface org.fryske_akademy.ejb.CrudReadService

CrudReadService.SORTORDER

Field Summary

Fields

Modifier and Type	Field and Description
static String	EDITOR
static int	MAX_RESULT_AUTOCOMPLETE

Constructor Summary

Constructors

Constructor and Description
AbstractCrudService()

Method Summary

Modifier and Type	Method and Description
<T extends EntityInterface> List<T>	autoComplete(String namedQuery, String paramName, String paramValue, Integer max, Class<T> type)
int	count(List<Param> params, Class type)
<T extends EntityInterface> T	createOrUpdate(T t)
void	delete(EntityInterface t)
<T extends EntityInterface> List<T>	find(Map<String,CrudReadService.SORTORDER> sort, List<Param> params, Integer max, Class<T> type)
<T extends EntityInterface> T	find(Serializable id, Class<T> type)
<T extends EntityInterface> List<T>	find(String namedQuery, List<Param> params, Integer max, Class<T> type)
<T extends EntityInterface> List<T>	findAll(Class<T> type)
<T extends EntityInterface> T	findOne(String namedQuery, List<Param> params, Class<T> type)
<T extends EntityInterface> T	findOne(String namedQuery, String paramName, Object paramValue, Class<T> type)
<T extends EntityInterface> List<T>	findPaged(int first, int pageSize, Map<String,CrudReadService.SORTORDER> sort, List<Param> params, Class<T> type)
protected abstract javax.persistence.EntityManager	getEntityManager()
<T extends EntityInterface> T	getRevision(Number n, Class<T> type) get historical data for a certain revision
<T extends EntityInterface> List<RevInfo<T>>	getRevisionInfo(T entity, Integer max, Class<T> type) return a list holding revision information, newest come first
<T extends EntityInterface> List<Number>	getRevisionNumbers(Object id, Class<T> type) return list of revision numbers, first is the oldest

Methods inherited from class java.lang.Object

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

Field Detail

MAX_RESULT_AUTOCOMPLETE

public static final int MAX_RESULT_AUTOCOMPLETE

See Also:

Constant Field Values

EDITOR

public static final String EDITOR

See Also:

Constant Field Values

Constructor Detail

AbstractCrudService

public AbstractCrudService()

Method Detail

getEntityManager

protected abstract javax.persistence.EntityManager getEntityManager()

find

public <T extends EntityInterface> T find(Serializable id,
                                          Class<T> type)

Specified by:

find in interface CrudReadService

findAll

public <T extends EntityInterface> List<T> findAll(Class<T> type)

Specified by:

findAll in interface CrudReadService

findPaged

public <T extends EntityInterface> List<T> findPaged(int first,
                                                     int pageSize,
                                                     Map<String,CrudReadService.SORTORDER> sort,
                                                     List<Param> params,
                                                     Class<T> type)

Specified by:

findPaged in interface CrudReadService

find

public <T extends EntityInterface> List<T> find(Map<String,CrudReadService.SORTORDER> sort,
                                                List<Param> params,
                                                Integer max,
                                                Class<T> type)

Specified by:

find in interface CrudReadService

find

public <T extends EntityInterface> List<T> find(String namedQuery,
                                                List<Param> params,
                                                Integer max,
                                                Class<T> type)

Specified by:

find in interface CrudReadService

autoComplete

public <T extends EntityInterface> List<T> autoComplete(String namedQuery,
                                                        String paramName,
                                                        String paramValue,
                                                        Integer max,
                                                        Class<T> type)

Specified by:

autoComplete in interface CrudReadService

findOne

public <T extends EntityInterface> T findOne(String namedQuery,
                                             List<Param> params,
                                             Class<T> type)

Specified by:

findOne in interface CrudReadService

findOne

public <T extends EntityInterface> T findOne(String namedQuery,
                                             String paramName,
                                             Object paramValue,
                                             Class<T> type)

Specified by:

findOne in interface CrudReadService

count

public int count(List<Param> params,
                 Class type)

Specified by:

count in interface CrudReadService

getRevision

public <T extends EntityInterface> T getRevision(Number n,
                                                 Class<T> type)

Description copied from interface: CrudReadService

get historical data for a certain revision

Specified by:

getRevision in interface CrudReadService

Returns:

getRevisionInfo

public <T extends EntityInterface> List<RevInfo<T>> getRevisionInfo(T entity,
                                                                    Integer max,
                                                                    Class<T> type)

Description copied from interface: CrudReadService

return a list holding revision information, newest come first

Specified by:

getRevisionInfo in interface CrudReadService

max - the maximum to number of results to return, defaults to 5

Returns:

createOrUpdate

@RolesAllowed(value="editor")
public <T extends EntityInterface> T createOrUpdate(T t)

Specified by:

createOrUpdate in interface CrudWriteService

delete

@RolesAllowed(value="editor")
public void delete(EntityInterface t)

Specified by:

delete in interface CrudWriteService

getRevisionNumbers

public <T extends EntityInterface> List<Number> getRevisionNumbers(Object id,
                                                                   Class<T> type)

Description copied from interface: CrudReadService

return list of revision numbers, first is the oldest

Specified by:

getRevisionNumbers in interface CrudReadService

Returns: