io.geewit.data.jpa.essential.utils

类 TupleQueryUtils

java.lang.Object

io.geewit.data.jpa.essential.utils.TupleQueryUtils

public class TupleQueryUtils
extends java.lang.Object

构造器概要

构造器

构造器和说明
TupleQueryUtils()

方法概要

限定符和类型	方法和说明
static long	executeCountQuery(javax.persistence.TypedQuery<java.lang.Long> query) Executes a count query and transparently sums up all values returned.
static <T> javax.persistence.TypedQuery<java.lang.Long>	getCountQuery(javax.persistence.EntityManager entityManager, javax.persistence.criteria.Root<T> root, javax.persistence.criteria.CriteriaQuery<java.lang.Long> criteriaQuery, javax.persistence.criteria.CriteriaBuilder criteriaBuilder, javax.persistence.criteria.Predicate predicate) Creates a new count query for the given EntityManager.

从类继承的方法 java.lang.Object

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

构造器详细资料

TupleQueryUtils

public TupleQueryUtils()

方法详细资料

executeCountQuery

public static long executeCountQuery(javax.persistence.TypedQuery<java.lang.Long> query)

Executes a count query and transparently sums up all values returned.

参数:

query - must not be null.

返回:

getCountQuery

public static <T> javax.persistence.TypedQuery<java.lang.Long> getCountQuery(javax.persistence.EntityManager entityManager,
                                                                             javax.persistence.criteria.Root<T> root,
                                                                             javax.persistence.criteria.CriteriaQuery<java.lang.Long> criteriaQuery,
                                                                             javax.persistence.criteria.CriteriaBuilder criteriaBuilder,
                                                                             javax.persistence.criteria.Predicate predicate)

Creates a new count query for the given EntityManager.

参数:

entityManager - can be null.

root - must not be null.

返回: