org.opencastproject.util.persistencefn

Class Queries.QueriesBase<P>

java.lang.Object

org.opencastproject.util.persistencefn.Queries.QueriesBase<P>

Direct Known Subclasses:

Queries.TypedQueriesBase

Enclosing class:

Queries

public abstract static class Queries.QueriesBase<P>
extends Object

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	QueriesBase()

Method Summary

Modifier and Type	Method and Description
long	count(javax.persistence.EntityManager em, String q, P... params) Run a COUNT(x) query.
com.entwinemedia.fn.Fn<javax.persistence.EntityManager,Long>	count(String q, P... params) count(javax.persistence.EntityManager, String, Object[]) as a function.
<A> List<A>	findAll(javax.persistence.EntityManager em, String q, int offset, int limit, P... params) Find multiple objects with pagination.
<A> List<A>	findAll(javax.persistence.EntityManager em, String q, com.entwinemedia.fn.data.Opt<Integer> offset, com.entwinemedia.fn.data.Opt<Integer> limit, P... params) Find multiple objects with optional pagination.
<A> List<A>	findAll(javax.persistence.EntityManager em, String q, P... params) Find multiple entities.
<A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,List<A>>	findAll(String q, int offset, int limit, P... params)
<A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,List<A>>	findAll(String q, com.entwinemedia.fn.data.Opt<Integer> offset, com.entwinemedia.fn.data.Opt<Integer> limit, P... params)
<A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,List<A>>	findAll(String q, P... params) findAll(javax.persistence.EntityManager, String, Object[]) as a function.
<A> com.entwinemedia.fn.data.Opt<A>	findFirst(javax.persistence.EntityManager em, String q, P... params) Run a SELECT query and return only the first result item.
<A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,com.entwinemedia.fn.data.Opt<A>>	findFirst(String q, P... params) findSingle(javax.persistence.EntityManager, String, Object[]) as a function.
<A> com.entwinemedia.fn.data.Opt<A>	findSingle(javax.persistence.EntityManager em, String q, P... params) Run a SELECT query that should return a single result.
<A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,com.entwinemedia.fn.data.Opt<A>>	findSingle(String q, P... params) findSingle(javax.persistence.EntityManager, String, Object[]) as a function.
abstract javax.persistence.Query	query(javax.persistence.EntityManager em, String q, P... params) Create a query from q with a list of parameters.
boolean	update(javax.persistence.EntityManager em, String q, P... params) Run an update (UPDATE or DELETE) query and ensure that at least one row got affected.
com.entwinemedia.fn.Fn<javax.persistence.EntityManager,Boolean>	update(String q, P... params) update(javax.persistence.EntityManager, String, Object[]) as a function.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueriesBase

protected QueriesBase()

Method Detail

query

public abstract javax.persistence.Query query(javax.persistence.EntityManager em,
                                              String q,
                                              P... params)

Create a query from q with a list of parameters. Values of type Date are recognized and set as a timestamp (TemporalType.TIMESTAMP.

update

public boolean update(javax.persistence.EntityManager em,
                      String q,
                      P... params)

Run an update (UPDATE or DELETE) query and ensure that at least one row got affected.

update

public com.entwinemedia.fn.Fn<javax.persistence.EntityManager,Boolean> update(String q,
                                                                              P... params)

update(javax.persistence.EntityManager, String, Object[]) as a function.

findSingle

public <A> com.entwinemedia.fn.data.Opt<A> findSingle(javax.persistence.EntityManager em,
                                                      String q,
                                                      P... params)

Run a SELECT query that should return a single result.

Returns:

some value if the query yields exactly one result, none otherwise

findSingle

public <A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,com.entwinemedia.fn.data.Opt<A>> findSingle(String q,
                                                                                                              P... params)

findSingle(javax.persistence.EntityManager, String, Object[]) as a function.

findFirst

public <A> com.entwinemedia.fn.data.Opt<A> findFirst(javax.persistence.EntityManager em,
                                                     String q,
                                                     P... params)

Run a SELECT query and return only the first result item.

findFirst

public <A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,com.entwinemedia.fn.data.Opt<A>> findFirst(String q,
                                                                                                             P... params)

findSingle(javax.persistence.EntityManager, String, Object[]) as a function.

count

public long count(javax.persistence.EntityManager em,
                  String q,
                  P... params)

Run a COUNT(x) query.

count

public com.entwinemedia.fn.Fn<javax.persistence.EntityManager,Long> count(String q,
                                                                          P... params)

count(javax.persistence.EntityManager, String, Object[]) as a function.

findAll

public <A> List<A> findAll(javax.persistence.EntityManager em,
                           String q,
                           P... params)

Find multiple entities.

findAll

public <A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,List<A>> findAll(String q,
                                                                                   P... params)

findAll(javax.persistence.EntityManager, String, Object[]) as a function.

findAll

public <A> List<A> findAll(javax.persistence.EntityManager em,
                           String q,
                           com.entwinemedia.fn.data.Opt<Integer> offset,
                           com.entwinemedia.fn.data.Opt<Integer> limit,
                           P... params)

Find multiple objects with optional pagination.

findAll

public <A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,List<A>> findAll(String q,
                                                                                   com.entwinemedia.fn.data.Opt<Integer> offset,
                                                                                   com.entwinemedia.fn.data.Opt<Integer> limit,
                                                                                   P... params)

findAll

public <A> List<A> findAll(javax.persistence.EntityManager em,
                           String q,
                           int offset,
                           int limit,
                           P... params)

Find multiple objects with pagination.

findAll

public <A> com.entwinemedia.fn.Fn<javax.persistence.EntityManager,List<A>> findAll(String q,
                                                                                   int offset,
                                                                                   int limit,
                                                                                   P... params)