cascade keyword + hibernate mapping

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hibernate mapping files easy to use formula

Not previously used formula, today Tried , Student and books or use the one-to-many relationship to illustrate: Students.hbm.xml: Books.hbm.xml: Test code: Results: Hibernate implementation from the statement, we can see bookCount of Students through ...

Hibernate mapping file configuration

Object-relational mapping is an XML document to illustrate the. Document mapping tools can be used to generate, such as XDoclet, Middlegen and so on AndroMDA. The following example from the beginning of a map on the mapping element of the code mapping fil

hibernate mapping file Xiangjie 1

1. Doctype All XML mappings are shown above need to define the doctype. DTD can be obtained from the above URL, it can be hibernate-xxx/src/net/sf / hibernate directory, or hibernate.jar documents found. Hibernate will always be the first in its classptah

A complex hibernate mapping file

<? xml version = "1.0"?> <! DOCTYPE hibernate-mapping PUBLIC "- / / Hibernate / Hibernate Mapping DTD 2.0 / / EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"> <hibernate-mapping> <class n

Hibernate mapping configuration properties to explain the relationship between

1. Attributes and their meaning hibernate-mapping properties auto-import (optional - defaults to true): Specifies whether we can in the query language, use of non-fully qualified class name (only in this mapping file in the class). package (optional): Spe

Hibernate mapping Xiang Jie [change]

1. Doctype All XML mappings are shown above need to define the doctype. DTD can be obtained from the above URL, it can be hibernate-xxx/src/net/sf / hibernate directory, or hibernate.jar documents found. Hibernate will always be the first in its classptah

hibernate-mapping arguments detailed

hibernate-mapping arguments detailed Mapping file parsing: 1, hibernate-mapping 1.default-access (optional - defaults to property): Hibernate to access the property strategy. Can be achieved PropertyAccessor interface customization. 2.default-lazy (option

hibernate mapping skills in one-to-many (two-way-to-many)

Two-way-to-many relationship, is actually a "one-way-to-many relationship" and "many to one relationship" combination. Means that we must master side configuration based on one-way-to-many relationship, many to one relationship between

Hibernate mapping summary

1. Many to one mapping Object Model: User Group id: int name: String group: Group id: int name: String Mapping: <hibernate-mapping package="com.nintenyun.hibernate"> <class name="User" table="t_user"> <id

Hibernate mapping one to one association (the only primary key foreign key association associated with VS)

Mapping one to one association, there are two: one is the primary key association, which is the "only" foreign key association. Primary key associated with: two tables principle is the primary key (ID) to maintain consistent access to two t

(Transfer) Hibernate mapping many to one-way association (one of)

From the perspective of students, and teachers are many to one association, that is, a student must correspond to a teacher (from the point of view is the one to many teachers, we selected the students as a reference), so the students inside the map file

(Transfer) Hibernate mapping many to one-way association (bis)

Prerequisite: one-way association in the Hibernate mapping many to one (one) in the configuration file on the basis of the mapping. Look at the cascade update, in fact, and insert the same. But there are several points need special attention. student

Hibernate mapping one to many association mapping

Hibernate one to many mapping java class public class Department{ private String departmentId; private String departmentName; private List<Employee> employee; public Department() { } public Department(String departmentId) { this.departmentId =

Hibernate mapping a comprehensive analysis

Hibernate mapping a comprehensive analysis, to date, on the Hibernate mapping depressed can no longer suppressed, and this must be the annoying guy to be the cut off, following one by one will do fine Hibernate mapping of various solutions. Hibernate mapp

Hibernate Mapping Types

Hibernate mapping types divided into two categories: built-in mapping types and mapping types of customers. Built-in mapping types is responsible for some common Java types are mapped to the corresponding SQL type; In addition, Hibernate also allows users

hibernate mapping view that experience, wonderful!

Report required because of a need to link the three statistical tables, and more complicated sql statements, and Table 3 are the data of millions of magnitude. All of my beginning Selection of native SQL are the way to the implementation of the query. But

Examples of collection hibernate mapping

<? xml version = "1.0" encoding = "utf-8"?> <! DOCTYPE hibernate-mapping PUBLIC "- / / Hibernate / Hibernate Mapping DTD 3.0 / / EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibe

Hibernate mapping Sybase view

Hibernate mapping the needs of the primary key, this view is lacking, orcale database can have a rowid to impersonate you, Sybase database and there is no such a fake ID. are a number of google This configuration. I also just made a fake ID from a ha ...

composite primary key hibernate mapping of an example

MealfeeDetail.hbm.xml MealfeeDetail.java Database table fields:

javascript field validation page hibernate mapping file length field limit the problem of length

var danger = document.getElementById ( "domain.dangerAndMeasure"). value; if (danger.length> 500) ( alert ( "Construction of the danger point and the length of the corresponding measures can not be more than 1000!"); return; ) ...

Hibernate mapping entity relationship

Hibernate mapping entity relationship It took three days of free time, and finally finished the Hibernate mapping relationship of all the examples should also sum up the feeling. Hibernate mapping complex and in practice can really use it? Not all right?

Hibernate mapping a collection of attributes - reproduced

Hibernate mapping collection attributes in the Reprinted http://janwer.javaeye.com/blog/136945 Keywords: hibernate collection mappings Collection properties are basically two kinds: the first one is simply a collection of properties, such as such as ...

Use XDoclet2 generate hibernate mapping file and then generate the database ddl script

In my article "using Xdoclet generated hbm file by POJOt not generate meta annotation problem" described xdoclet1 generate hibernate mapping file using some of the issues, this is no longer mentioned, and who are interested friends can see for y

On the Hibernate mapping file, set the value attribute generator

<hibernate-mapping> <class table=" Table " name=" Package . Class "> <id name="id"> <!-- Key to this sentence :generator --> <generator/> </id> <!-- The rest of the property mapping --> </class> </hiberna

Hibernate mapping type hibernate mysql map type [change]

1, Hibernate mapping type hibernate mysql map type Hibernate Mapping Types Java Type Standard SQL type Size and value range integer or int int or java.lang.Integer INTEGER 4 bytes long long Long BIGINT 8 bytes short short Short SMALLINT 2 bytes byte byte

hibernate mapping type

Hibernate mapping types are divided into two types: built-in mapping types and custom mapping types. Built-in mapping types for some common Java types mapped to the corresponding SQL type; In addition, Hibernate allows the user to achieve UserType or Comp

Hibernate mapping instance affiliated Quick Check

Hibernate mapping instance affiliated Quick Check Many Hibernate mapping, but also more complex, and very easy to forget. This largely accounts for the time Hibernate learning Qi Cheng. Familiar with the mapping model, requires a lot of practice to m ...

Hibernate mapping a collection of components

Map collection set list array map Configuration: POJO Test Class: Configuration file will be found in list-index property, which is inserted in order to save.

About Myeclipse generate hibernate mapping file error solution

In use myeclipse6.5GA mapping file generated hibernate3.2, suggesting an error, "An internal error occurred during: Generating Artifacts". But there is no corresponding error messages, was very depressed. To find a moment to generate hibern

Using myeclipse generate Hibernate Mapping Files

Using myeclipse generate Hibernate Mapping Files In hibernate, each data table is an entity corresponding to the class, each entity class has a corresponding configuration file, and you hbm.xml match, myeclipse in fact have MyEclipse Database Explore

Personal experience Hibernate mapping of the view

Personal experience Hibernate mapping of the view java technology 2010-05-24 00:41:35 read 120 comments 0 Font Size: Large Medium Small Subscribe Personal experience Hibernate mapping of the view When using Hibernate, if the database is used to trigger, y

hibernate mapping multi-table query object

In the Q & A in and forums, often see people ask how to use the local SQL query result maps out the value of the object, here the method provided on the Hibernate to be a conclusion. Premise, there are no delays in loading techniques using the propert

MyEclipse-generating Hibernate mapping files

First introduced today the first little skill, 2 minutes, quickly generate Hibernate user table code. With MyEclipse, MyEclipse is necessary, familiarize yourself with the functions of rapid development. When we are familiar with the basic development pro

Introduction to the Hibernate mapping List

If the object is included here, describes the properties of type List how the image, we first assume that we want to create an online file management, users upload the file names may be repeated, with the same name, before the use of the Set does not allo

hibernate mapping of the map

Map collection of maps and mapping value types into entity type mapping. First, the value of the type mapping POJO class as follows. public class Product { private Integer id; private String name; private Map images; / / attributes of the entity clas

Hibernate mapping type finishing

Java Hibernate mapping types basic types Hibernate mapping type Java Type Standard SQL type Size and range Integer / int java.lang.Integer / int INTEGER 4 bytes, -2 ^ 31 to 2 ^ 31-1 long java.lang.Long / long BIGINT 8 bytes, -2 ^ 63 to 2 ^ 63-1 short

Hibernate Mapping files generated by myeclipse No entries available when a solution

Original link: http://gundumw100.iteye.com/blog/436692 In hibernate, each corresponding data table is an entity class, each class has a corresponding entity profile and you hbm.xml match, myeclipse There is a MyEclipse Database Explorer view, it prov

Myeclipse hibernate mapping file used to generate

In hibernate, each table is an entity corresponding to the class, each class has a corresponding entity profile and you hbm.xml match, myeclipse in fact there is a MyEclipse Database Explorer view, it provides a direct database myeclipse Connect the

hibernate mapping inverse and cascade Collection Detailed

# Assume that there is a relationship between the table ADDRESS_SCHOOL, has two fields ADDRESS_ID, SCHOOL_ID, # The two fields corresponding to ADDRESS and the key two tables SCHOOL (11) insert the SQL statement is: insert into ADDRESS_SCHOOL (ADDRESS_ID,

Hibernate mapping using the UUID and the MAP problem

Look at the code <id name="id"> <generator /> </id> <discriminator column="p_type" type="string"/> <property name="name" length="20"/> <map name="map" table="t_map" cascade="all"> <key column="id"/> <map-key ty

Hibernate mapping one to many relation and object persistence.

Mapping one to many association with the object persistence. 1. Many relationships one to many one-way associated with the realization: The Customer Order as an example a customer can have multiple order, but an order belongs to a customer. Then on t

Hibernate mapping collection of several setup options

Hibernate collection mapping: In the use of set, list, map and label to represent the collection bag when there are several attributes you can set: 1. Cascade: cascade attribute is used to represent changes in the time when an entity changes an entity ass

Hibernate mapping inheritance

Inheritance mapping divided into three types: 1 single-table inheritance: each type of tree to use a table inheritance (table per class hlerarchy) Table 2 specific inheritance: a table for each subclass (table per subclass) Table 3 Class inheritance: ...

Automatically generated by xdoclet's hibernate mapping files, configuration files

To http://sourceforge.net/ Download xdoclet-plugins-dist-1.0.4. If the eclipse, then do not need to configure (if there is no need to install ide good ant) build.xml model: Run ant, ok, User.hbm.xml and automatically generates a hibernate.cfg.xml.

Study Notes hibernate mapping set 10 ---

1, set As already introduced the use of set, there is only one element brief elements: If the one-to-many multi-table in the small field, you can establish a mapping file do not have a separate, more convenient to use element Such as: Company - Dept Only

Hibernate mapping one to one relationship between

Using the relationship between man and identity Person class has three attributes private int id ; private String name; private IdCard card; IdCard class has three attributes private int id; private String number; private Person person; The first case, th

hibernate mapping file Xiangjie 2

8. Generator <generator> Optional sub-element is the name of a Java class used for persistent instances of a class to generate unique identifiers. If the generator needs some configuration values or the instance initialization parameters, using <

INT field with Hibernate mapping to the enumerated type

When the entity contains a similar XxxxType field, in order to performance considerations, the general database field of type TINYINT or INT. And since Java provides enumeration types later, in Java code using the enumeration type to represent this v ...

Hibernate mapping note points

1, cascade and the inverse of the difference: Both interview spot, so be sure to find out. 1.inverse only set + one-to-many (or many-to-many) valid for many-to-one, one-to-one invalid. cascade on the relationship between markers are effective. 2.inverse o

Middlegen generate hibernate mapping file

First download Middlegen: http://sourceforge.net/projects/hibernate/files/ , dragged down, it is following a link is. Modify \ iddlegen-Hibernate-r5 \ config \ database \ mysql.xml (DB type selected under the appropriate profile for modifications), paying
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