com.querydsl.core

Interface Fetchable<T>

Type Parameters:

T - result type

All Known Subinterfaces:

FetchableQuery<T,Q>, JDOQLQuery<T>, JPQLQuery<T>, Union<RT>

All Known Implementing Classes:

AbstractCollQuery, AbstractHibernateQuery, AbstractHibernateSQLQuery, AbstractJDOQuery, AbstractJPAQuery, AbstractJPASQLQuery, AbstractLuceneQuery, AbstractLuceneQuery, AbstractLuceneQuery, AbstractMongodbQuery, AbstractSearchQuery, AbstractSQLQuery, AbstractSQLQuery, AbstractSQLQuery, CollQuery, FetchableQueryBase, FetchableSubQueryBase, HibernateQuery, HibernateSQLQuery, JDOQuery, JDOSQLQuery, JPAQuery, JPAQueryBase, JPASQLQuery, LuceneQuery, LuceneQuery, LuceneQuery, MorphiaQuery, MySQLQuery, OracleQuery, PostgreSQLQuery, ProjectableSQLQuery, SearchQuery, SQLQuery, SQLServerQuery, TeradataQuery, TypedQuery, TypedQuery, TypedQuery, UnionImpl

public interface Fetchable<T>

Fetchable defines default projection methods for Query implementations. All Querydsl query implementations should implement this interface.

Author:

tiwe

Method Summary

Modifier and Type	Method and Description
List<T>	fetch() Get the projection as a typed List
long	fetchCount() Get the count of matched elements
T	fetchFirst() Get the first result of Get the projection or null if no result is found
T	fetchOne() Get the projection as a unique result or null if no result is found
QueryResults<T>	fetchResults() Get the projection in QueryResults form
com.mysema.commons.lang.CloseableIterator<T>	iterate() Get the projection as a typed closeable Iterator

Method Detail

fetch

List<T> fetch()

Get the projection as a typed List

Returns:

results in list form

fetchFirst

T fetchFirst()

Get the first result of Get the projection or null if no result is found

Returns:

first result or null

fetchOne

T fetchOne()

Get the projection as a unique result or null if no result is found

Returns:

first result or null

Throws:

NonUniqueResultException - if there is more than one matching result

iterate

com.mysema.commons.lang.CloseableIterator<T> iterate()

Get the projection as a typed closeable Iterator

Returns:

closeable iterator

fetchResults

QueryResults<T> fetchResults()

Get the projection in QueryResults form

Returns:

results

fetchCount

long fetchCount()

Get the count of matched elements

Returns:

row count