java persistence with hibernate

Java open-source project hibernate package Functions This article cited from: http://hi.baidu.com/nick6610/blog/item/70b58afa0d0eab9259ee90f7.html Java open-source project hibernate package Functions Reference from http://www.yesky.com/443/1864943.shtml Hibernate

Antlr-2.7.7.jarFunction: A tool that accepts the description of the word grammar language and produces a program that recognizes the statements in these languages.Package path and main class: not provided Dom4j-1.6.1.jarFunction: is a Java XML API, similar to Jdom, used to read and write XML filesPackage path and main class: not provided Hibernate-commons-annotations-4.0.4.final.jarFunction: Use javax.per

Hibernate is an open-source object-relational mapping framework that provides JDBC with a very lightweight object encapsulation that allows Java programmers to manipulate databases at will using object programming thinking. Hibernate can be applied to any JDBC application, both in Java client applications and in servle

Hibernate classification and integration found that in fact, hibernate is divided into three major parts: core objects, mapping, HQL, the most commonly used in the development process, the first several discussed the core objects and the transformation between objects, and then discuss the hibernate mapping using methods.An important function of

, Java.util.SortedSet, java.util.List , and an array of any persisted entities or values (using the Set collection type is the best choice). Properties of type Java.util.Collection or java.util.List can also be persisted using the "bag" semantics. The collection used for persistence, except for the collection interface, cannot retain any semantics attached to the class that implements these interfaces (for example, the iteration order that Linkedhashs

The session is the basis of the persistence layer operation, equivalent to the connection in JDBC, which saves, updates, and finds data through session sessions.Session is the center of Hibernate operation, object life cycle, transaction management, database access are related to the sessionSession created by Sessionfactory is a thread-safe thread-safe that allows multiple threads to access sessionfactory a

Hibernate needs the jar package1)Hibernate3.jar: Hibernate core Library, nothing to say, must use the JAR package2)Cglib-asm.jar: Cglib Library, Hibernate uses it to achieve the dynamic generation of PO bytecode, very core library, must use the JAR package3)Dom4j.jar: dom4j is a Java XML API, similar to Jdom, used to r

AnnotationsThe hibernate annotation is an up-to-date method that does not use an XML file to define a mapping. Annotations can be used in the addition or substitution of XML map metadata. Hibernate annotations are a powerful way to provide a mapping of metadata objects and relational tables. All the metadata is stuck together code pojo Java files This helps user

Hibernate and Database LocksOne, why use the lock? To understand the reasons for the existence of the lock mechanism, the first thing to know is the concept of the transaction.A transaction is a series of related operations to a database that must have acid characteristics: A (atomicity): either all succeeds or all is withdrawn. C (consistency): To maintain consistency in the database. I (Isolation): When different transactions operate t

I am not familiar with the latest project using Java. No way, I had to stick to my head, and spent a long time, finally completed the first hibernate example in eclipse. Next, record the key steps and take notes for future reference. (1) download Hibernate and import it to the project.Project-> properies-> JAVA build p

MethodsCombinejqueryvalidateValidating FormsInstanceFullcalendarAsCalendarPlug-in instances,Googlecode prettifyHighlight the code instance.13, code structure : The system is divided into the presentation layer , the control layer , the business Logic layer and the data Persistence layer , and so on, reduce the system coupling, improve the system operation efficiency and maintainability. All levels of the common code are abstracted out (such as adding

buyername; @XmlElement (name = "MailAddress", required = true) private String mailaddress; Public Order () { }In order to use JAXB to marshal and unmarshal order objects, we have added JAXB-related annotation to the Order class. We will use Hibernate to complete the data persistence and then send the order to XML using the spring-provided jmstemplate to TextMessage to the Order.queue in the Log

Hibernate is the ORM framework for a lightweight encapsulation of JDBC, which acts as a persistence layer for the project.To use hibernate, you need to continue configuring it first,Primer pack: Download hibernate and add the jar packageSimultaneously introducing the MySQL jar packageCREATE TABLE ' employee ' (' id '

loading, and the Get method does not have an exception when the object is not queried. The corresponding load method supports lazy loading, and load throws an exception when the object is not queried. For example, now we all know that lazy loading of hibernate can reduce the memory overhead of the system, and to some extent it will benefit the query efficiency of the program, but sometimes it is clear that the data needs to be loaded immediately, if

For Java Development Advanced, Hibernate is one of the three main Java framework, enough to see its importance, then how much do you know about hibernate? From today on I will lead you together to explore hibernate knowledge, hibernate