net.csdn.jpa.model

Class Model.JPAQuery

java.lang.Object

net.csdn.jpa.model.Model.JPAQuery

Enclosing class:

Model

public static class Model.JPAQuery
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
javax.persistence.Query	query
String	sq

Constructor Summary

Constructors

Constructor and Description
JPAQuery(javax.persistence.Query query)
JPAQuery(String sq, javax.persistence.Query query)

Method Summary

Modifier and Type	Method and Description
Model.JPAQuery	bind(String name, Object param) Bind a JPQL named parameter to the current query.
<T> List<T>	fetch() Retrieve all results of the query
<T> List<T>	fetch(int max) Retrieve results of the query
<T> List<T>	fetch(int page, int length) Retrieve a page of result
<T> T	first()
<T> Model.JPAQuery	from(int position) Set the position to start
Model.JPAQuery	setParameter(String name, Object param) Set a named parameter for this query.

Methods inherited from class java.lang.Object

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

Field Detail

query

public javax.persistence.Query query

sq

public String sq

Constructor Detail

JPAQuery

public JPAQuery(String sq,
                javax.persistence.Query query)

JPAQuery

public JPAQuery(javax.persistence.Query query)

Method Detail

first

public <T> T first()

bind

public Model.JPAQuery bind(String name,
                           Object param)

Bind a JPQL named parameter to the current query. Careful, this will also bind count results. This means that Integer get transformed into long so hibernate can do the right thing. Use the setParameter if you just want to set parameters.

setParameter

public Model.JPAQuery setParameter(String name,
                                   Object param)

Set a named parameter for this query.

fetch

public <T> List<T> fetch()

Retrieve all results of the query

Returns:

A list of entities

fetch

public <T> List<T> fetch(int max)

Retrieve results of the query

Parameters:

max - Max results to fetch

Returns:

A list of entities

from

public <T> Model.JPAQuery from(int position)

Set the position to start

Parameters:

position - Position of the first element

Returns:

A new query

fetch

public <T> List<T> fetch(int page,
                         int length)

Retrieve a page of result

Parameters:

page - Page number (start at 1)

length - (page length)

Returns:

a list of entities