Hibernate映射文件(国外英文资料).docVIP

Hibernate映射文件(国外英文资料) A.Hibernate mapping file: Hibernate mapping file is a bridge for persistence of Hibernate and database Two.Hibernate mapping file format The basic content of the 1.Hibernate mapping file: Hibernate mapping file is *.hbm.xml XML file, so the file must follow the XML rule, that there must be a header file ? XML version= 1 encoding= UTF-8 and ? DTD DOCTYPE hibernate-mapping PUBLIC specification! -// Hibernate/Hibernate Mapping DTD//EN /hibernate-mapping-3.0.dtd The main contents of the 2.Hibernate mapping file: (1). The definition of mapping content: Hibernate mapping file by hibernate-mapping package= JavaBean package full path node mapping defined content and specify corresponding to the location of the JavaBean (also can not in the node with the package attribute to specify the corresponding JavaBean position, and the name attribute node in the node under class the specified) (2). Relational database and JavaBean: hibernate-mapping class name= JavaBean node under the name of the Hibernate mapping file (the JavaBean package name is specified using the package attribute of the node in the parent node) / full path (parent node of the node in the useless package attribute specifies the package name for JavaBean table= ) the corresponding database table associated name node specified database table and JavaBean (3). The key mapping: class... node with id name= database in JavaBean primary key attribute name column= database key name type= java.lang.String node mapping key, the node must have one and only one (because only one primary key), and must be placed in the property node ... (4). The primary key mapping way: in the id node with generator class=... mapping / node specified Hibernate into the way of generating primary key data to the database The.Assigned: is responsible for generating the external program (in session.save) (before setting the value for the object, the key) without Hibernate participation The.Native:Hibernate is based