com.mysema.query.jdo
Class AbstractJDOQLQuery<Q extends AbstractJDOQLQuery<Q>>

java.lang.Object
  com.mysema.query.support.QueryBase<Q>
      com.mysema.query.support.ProjectableQuery<Q>
          com.mysema.query.jdo.AbstractJDOQLQuery<Q>

Type Parameters:

Q -

All Implemented Interfaces:

Projectable

Direct Known Subclasses:

JDOQLQueryImpl

public abstract class AbstractJDOQLQuery<Q extends AbstractJDOQLQuery<Q>>
extends ProjectableQuery<Q>

Abstract base class for custom implementations of the JDOQLQuery interface.

Author:

tiwe

Field Summary

protected Set<String>	fetchGroups
protected Integer	maxFetchDepth

Fields inherited from class com.mysema.query.support.QueryBase

queryMixin

Constructor Summary

AbstractJDOQLQuery(javax.jdo.PersistenceManager persistenceManager)

AbstractJDOQLQuery(javax.jdo.PersistenceManager persistenceManager, JDOQLTemplates templates, QueryMetadata metadata, boolean detach)

Method Summary

Q	addFetchGroup(String fetchGroupName)
void	close()
long	count() return the amount of matched rows
boolean	exists()
Q	from(EntityPath<?>... args)
QueryMetadata	getMetadata()
JDOQLTemplates	getTemplates()
boolean	isDetach()
com.mysema.commons.lang.CloseableIterator<Object[]>	iterate(Expression<?>[] args) iterate over the results for the given projection
<RT> com.mysema.commons.lang.CloseableIterator<RT>	iterate(Expression<RT> projection) iterate over the results for the given projection
List<Object[]>	list(Expression<?>[] args) list the results for the given projection An empty list is returned for no results.
<RT> List<RT>	list(Expression<RT> expr) list the results for the given projection An empty list is returned for no results.
<RT> SearchResults<RT>	listResults(Expression<RT> expr) list the results for the given projection
protected void	logQuery(String queryString)
Q	setMaxFetchDepth(int depth)
String	toString()
Object[]	uniqueResult(Expression<?>[] args) return a unique result for the given projection or null if no result is found
<RT> RT	uniqueResult(Expression<RT> expr) return a unique result for the given projection or null if no result is found

Methods inherited from class com.mysema.query.support.ProjectableQuery

countDistinct, iterate, iterateDistinct, iterateDistinct, iterateDistinct, list, listDistinct, listDistinct, listDistinct, listDistinctResults, map, notExists, singleResult, singleResult, singleResult, transform, uniqueResult, uniqueResult

Methods inherited from class com.mysema.query.support.QueryBase

distinct, groupBy, having, limit, offset, orderBy, restrict, set, where

Methods inherited from class java.lang.Object

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

Field Detail

fetchGroups

protected final Set<String> fetchGroups

maxFetchDepth

@Nullable
protected Integer maxFetchDepth

Constructor Detail

AbstractJDOQLQuery

public AbstractJDOQLQuery(@Nullable
                          javax.jdo.PersistenceManager persistenceManager)

AbstractJDOQLQuery

public AbstractJDOQLQuery(@Nullable
                          javax.jdo.PersistenceManager persistenceManager,
                          JDOQLTemplates templates,
                          QueryMetadata metadata,
                          boolean detach)

Method Detail

addFetchGroup

public Q addFetchGroup(String fetchGroupName)

close

public void close()

count

public long count()

Description copied from interface: Projectable

return the amount of matched rows

exists

public boolean exists()

Returns:

true, if rows matching the given criteria exist, otherwise false

logQuery

protected void logQuery(String queryString)

from

public Q from(EntityPath<?>... args)

getMetadata

public QueryMetadata getMetadata()

getTemplates

public JDOQLTemplates getTemplates()

isDetach

public boolean isDetach()

iterate

public com.mysema.commons.lang.CloseableIterator<Object[]> iterate(Expression<?>[] args)

Description copied from interface: Projectable

iterate over the results for the given projection

Returns:

iterate

public <RT> com.mysema.commons.lang.CloseableIterator<RT> iterate(Expression<RT> projection)

Description copied from interface: Projectable

iterate over the results for the given projection

Type Parameters:

RT - generic type of the Iterator

Returns:

an Iterator over the projection

list

public List<Object[]> list(Expression<?>[] args)

Description copied from interface: Projectable

list the results for the given projection An empty list is returned for no results.

Specified by:

list in interface Projectable

Overrides:

list in class ProjectableQuery<Q extends AbstractJDOQLQuery<Q>>

Returns:

list

public <RT> List<RT> list(Expression<RT> expr)

Description copied from interface: Projectable

list the results for the given projection An empty list is returned for no results.

Specified by:

list in interface Projectable

Overrides:

list in class ProjectableQuery<Q extends AbstractJDOQLQuery<Q>>

Type Parameters:

RT - generic type of the List

Returns:

a List over the projection

listResults

public <RT> SearchResults<RT> listResults(Expression<RT> expr)

Description copied from interface: Projectable

list the results for the given projection

Returns:

setMaxFetchDepth

public Q setMaxFetchDepth(int depth)

toString

public String toString()

Overrides:

toString in class QueryBase<Q extends AbstractJDOQLQuery<Q>>

uniqueResult

@Nullable
public <RT> RT uniqueResult(Expression<RT> expr)

Description copied from interface: Projectable

return a unique result for the given projection or null if no result is found

There is some ambiguity for missing results and null valued results, for disambiguation and your own projection methods.

Type Parameters:

RT - return type

Returns:

the result or null for an empty result

uniqueResult

@Nullable
public Object[] uniqueResult(Expression<?>[] args)

Description copied from interface: Projectable

return a unique result for the given projection or null if no result is found

There is some ambiguity for missing results and null valued results, for disambiguation and your own projection methods.

Returns: