nhibernate criteria aggregate restrictions

The Criteria Query Example Hibernate

Criterai is a fully object-oriented query methods package test; import java.util.List; import org.hibernate.Criteria; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.criterion.Criterion; import org.hibernate.cri

hibernate in Criteria Query (transfer)

http://www.cnblogs.com/Fskjb/archive/2009/12/01/1614810.html When the query data, people often need to set query. In the SQL or HQL statement, the query conditions are often placed where clause. In addition, Hibernate supports Criteria query (Criteria Que

Criteria-based paging Integrated Query (Hibernate is to complicate the simple things)

1. Demand <br /> query input box below, requires a non-time-frame of the text box to be able to fuzzy query Search results are as follows, in order to ensure the universal type and efficiency, should only check the required properties 2. <br /

Hibernate using Criteria queries to remove duplicate data using the Distinct

[Hibernate] Hibernate using Criteria queries to remove duplicate data using the Distinct Polls | Delete / / Fragment of code Criteria criteria = session.createCriteria (User.class); criteria.add (Restrictions.like ("name", name, MatchMode.ANYWHE

Hibernate's criteria query

If a Student class as follows: -------------------------------------------------- ------------- public class Student ( private int sid; private String name; public int getSid () ( return sid; ) public void setSid (int sid) ( this.sid = sid; ) public Strin

Hibernate Criteria query combination

Configuration config = new Configuration(); SessionFactory sessionFactory = config.configure().buildSessionFactory(); Criteria criteria = session.createCriteria(MyPoJo.class); // Is equal to condition //Restrictions.eq(String,object); criteria.add(Restric

paging query criteria

public List findStockByStockPO (List Parameter1, int from, int size, StockPO po) { logger.info ("# # StartfindStockByStockPO"); List list = new ArrayList (); List result = new ArrayList (); super.getSession (). clear (); Criteria criteria =

hibernate Restrictions Usage

Methods Help Restrictions.eq = Restrictions.allEq Map for use of more than equal to the limit Restrictions.gt > Restrictions.ge > = Restrictions.lt < Restrictions.le <= Restrictions.between BETWEEN Restrictions.like LIKE Restrictions.in i

hibernate in the use of a Criteria query package

Criteria can be flexible according to the characteristics of query assembly. Can easily increase the number of query, set the sort to achieve paging. Criterion is the Criteria of the query. Criteria provides add (Criterion criterion) method to add the que

criteria for paging query

public List findStockByStockPO (List Parameter1, int from, int size, StockPO po) { logger.info ("# # StartfindStockByStockPO"); List list = new ArrayList (); List result = new ArrayList (); super.getSession (). clear (); Criteria criteria =

Basic inquiries to Hibernate's Criteria

Transfer http://www.blogjava.net/yzzh9/archive/2008/10/08/233236.html To operate a database management system, the most basic is to use SQL (Structured Query Language) statements, most databases support standard SQL statements are, however, there are

QBC and QBE query methods

http://student.csdn.net/space.php?uid=117956&do=blog&id=25789 1: QBE (Query By Example) Criteria cri = session.createCriteria (Student.class); cri.add (Example.create (s)); / / s is a Student object list cri.list (); Real: Create a template, such

hibernate study of the fifth chapter

1, oracle database, user is the keyword, if a user table named user will give rise to conflicts. The approach taken in the main have two kinds: ① If you can modify the table name, it is best to change the table name tuser or other name, to avoid causing t

Hibernate custom ClassLoader to load class files under the code and implement one of

One load a directory of a class file (the code is reproduced here) public class TestClassLoader extends ClassLoader{ private static final int CAPACITY = 1024; private String baseClassName;//Root path, for example, a project of the classes directory public

Generic Hibernate query page

JE There are two articles on the page with the generic query, and write well. Collection click here. Hibernate query page Summary JDK5.0 generic programming after --------------------------------------------- The following is the page to write my own meth

The realization of the field of Hibernate objects with custom fields

testing ...... Introduction In the development of enterprise-class business applications (enterprise scale), the customers tend to demand the system without modifying the source code of the application object model to support scalability. Use of extensibl

Spring + Hibernate application in the framework of the GenericHibernateDao

GenericHibernateDao Prepared under the framework of Spring + Hibernate application can not be always prepared from a common generic GenericHibernateDao. Access to the Internet to achieve a lot of GenericHibernateDao, collate and analyze the following real

Proficient in reading notes Hibernate

Generated Java classes Use the hibernate tools (hbm2java) Custom types associated with Achieve the UserType interface or CompositeUserType Interface Association expanding collection Chapter V complex, the Chinese version of 89. Hibernate mapping annotatio

Details of the generic DAO and use Hibernate

Under the framework of the preparation of Spring + Hibernate application can not always be prepared from a common generic GenericHibernateDao. Search the web many GenericHibernateDao implementation, collate and analyze as follows to achieve, for the follo

hibernate query efficiency (1)

Believe that more and more web developers are used in the persistence layer hibernate. hibernate can greatly improve development efficiency, while the corresponding migration of the project is also beneficial, but also a problem, we use hibernate ver ...

Issued a Hibernate utility class

In order to simplify the conditions for paging query parameters, wrote a utility class. Premise is that the page parameter names must follow certain rules, this rule is f_dataType_property and s_sortType_property. This is a representative of the pref ...

spring package WebUtils.getParametersStartingWith (request, "search_"); Use

In the pages contain many filter criteria! Include text boxes and drop-down menus and other two forms. Text box: 1. Company Name search_name 2. Search_mainfunction main business 3. Regional search_region 4. Source search_source The drop-down menu: 1. ...

hibernate for database access example

Hibernate is a powerful, high-performance relational database to object to the persistence service. Developers based languages (including association, inheritance, polymorphism, composition and collection of java framework), development of persistence lay

How to effectively test the parent class inherited ActionSupport class of input data

How will the efficacy parent class inherited ActionSupport input data, may I ask is not clear, please tell pointing! UserRootAction.java parent package com.dhsj.stu.action.root; import com.dhsj.stu.entity.Admin; import com.dhsj.stu.service.BaseDaoService;

Hibernate use of summary

1.Hibernate core programming for a core class Session interface: responsible for persistent object CRUD operations SessionFactory interface: responsible for initializing the Hibernate Configuration Interface: Responsible for configuration and start t

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public ActionForward addGroups (ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) ( String [] newGroupName = request.getParameterValues ("newgroupname"); int insertLength = newGroupName.length

the use of summary spring hibernate integration

First, the overall hibernate process. First, we can find the spring through the web.xml configuration file (usually we can spring configuration file is divided into a number: Dao-related, logic related to the various logic of the bean, all kinds of action

The most commonly used interfaces and implementation classes hibernate

import java.util.List; /** * @file_name BaseDao.java * @author janson_chang * @param <E> * @todo BaseDao */ public interface BaseDao<E> { /** * Returns the ID = ID of lasting market like * @param id * @return E */ public E get(String id);

Date Hibernate Query Tool

package com.gary.util; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /** * Hibernate Date query tool, used to YYYY-MM-DD Format date query * Incoming YYYY-MM-DD format string argumen

Exception org.hibernate.QueryException: could not resolve property because

Exception org.hibernate.QueryException: could not resolve property because Exception message is as follows: org.hibernate.QueryException: could not resolve property: task_no of: edu.cust.entity.Task Here, the key is "task_no of: edu.cust.entity.

Hibernate simple query

Query mode query (HQL entry) Session of the get () can only be based on id query object, hibernate provides the Query interface to support complex queries. Can session.createQuery (Strung Hql) for Query child class object. Exp: Query query = session.creat

hibernate query application summary (a)

Today the main summary of the hibernate Criteria standard query, Criteria (standard) query is very powerful, as long as the sql statement can be resolved he will be able to resolve, including Example (sample query), Restrictions (limits), Projections

hibernate criteria query usage of Restrictions

1. Method Description Restrictions.eq = Restrictions.allEq Map to use multiple equal to the limit Restrictions.gt> Restrictions.ge> = Restrictions.lt < Restrictions.le <= Restrictions.between BETWEEN Restrictions.like LIKE Restrictions.in

Hibernate query: HQL and Criteria

HQL query methods generally used in more general way through the query query. Examples are as follows: The Criteria is a more than HQL query object-oriented approach: Created as follows: Criteria crit = session.createCriteria (Object.class); crit.add ...

java interview questions large aggregate sum

java interview questions Pen ~ a very comprehensive summary of major java interview questions large aggregate sum First, to talk about the final, finally, finalize the distinction. The most commonly asked. Second, Anonymous Inner Class (anonymous inner cl

Hibernate's Criteria query methods

1.Hibernate the Criteria query, a problems for a long time, and occasionally a good way to see a dear friend, note down the back. Details please refer to (http://qingzuochen.javaeye.com/blog/456957). Specific questions are as follows: There are two p ...

The usage of Hibernate in the Criteria

Hibernate is designed CriteriaSpecification as a parent Criteria interface is provided below the Criteria and DetachedCriteria. Criteria and DetachedCriteria The main difference is not the same as the form is created, Criteria is online, so it is carried

A point on the criteria query detachedCriteria Experience

A point on the criteria query detachedCriteria Experience Article switched from http://www.blogjava.net/caixuetao/articles/60631.html Suppose a student through stuName Look Student records can be as follows: DetachedCriteria dc = DetachedCriteria.for ...

Full use of Criteria

Hibernate - DetachedCriteria the full use of Recent projects developed using Spring and Hibernate, feeling Criteria relatively easy to use, in the query method   Design Criteria can be flexible according to the characteristics of easily query assembly.

Common aggregate functions sql

8.2 Application of aggregate functions Aggregate data in a database query function analysis, widely used. This section will be the application of the various aggregate functions are explained. 8.2.1 Sum function - SUM () Sum function SUM () for the sum of

hibernate in the application of Criteria and CriteriaSpecification

Design Criteria can be flexible according to the characteristics to easily query the assembly. Now the usage of Hibernate's Criteria to sum up: Hibernate Criteria designed CriteriaSpecification as the parent interface, the following provides the Crite

org.hibernate.Criteria full usage

Criteria used to query the main is to clear the Hibernate Provide those classes and methods to meet the development of query creation and assembly, here are several usage: 1. Creating a Criteria instance org.hibernate.Criteria interfaces that a particular

The usage of Hibernate's Criteria

Mainly deal with complex queries, with a correlation between how the two entities were related queries, such as the User entity object and entity object Addres with one to many relationship, we can construct consistent with the following query: Criteria c

Java Hibernate Criteria usage

15.1. Creating a Criteria instance org.hibernate.Criteria interface represents a query particular persistent class. Criteria Session is an instance of the factory. Criteria crit = sess.createCriteria (Cat.class); crit.setMaxResults (50); List cats = crit.

Hibernate criteria query (DetachedCriteria)

Hibernate criteria query (DetachedCriteria) Method Description Restrictions.eq = Restrictions.allEq Map to use multiple equal to the limit Restrictions.gt> Restrictions.ge> = Restrictions.lt < Restrictions.le <= Restrictions.between BETWEEN Re

Criteria and application of the distinction and Detachedcriteria

Hibernate Criteria was designed as a parent CriteriaSpecification interface provides the following Criteria and DetachedCriteria. Criteria and DetachedCriteria The main difference is not the same as the form is created: Criteria is online, so it is carrie

Aggregate navigation error

Today met a very strange thing: The same report, during the interview, the data vary widely. The only change made is to go before the bottom is tsa_fact_punish_rstb table. Now taking the tsa_fact_punish_rdys table. Want to use the model as the aggreg

Oracle multi-line record merge / connect / string several ways to aggregate

What is the combined multi-line strings ( Connection string ) It, such as : SQL> desc test; Name Type Nullable Default Comments ------- ------------ -------- ------- -------- COUNTRY VARCHAR2(20) Y CITY VARCHAR2(20) Y SQL> select * from test; C

Criteria and DetachedCriteria and use the difference between

Criteria and DetachedCriteria the main difference is in the form of creation is not the same, Criteria is online, so it is a Hibernate Session to create; and DetachedCriteria is offline, when you need to create Session, DetachedCriteria provides two stati

Hibernate Criteria usage

Recently in a project using Spring and Hibernate to develop, feeling Criteria relatively easy to use, the query method  Design Criteria can be flexible according to the characteristics of the query to be easily assembled. Now the usage of the Hibern
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