Hibernate讲解(三)-Hibernate的基本映射数据类型

<?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">
<hibernate-mapping>
    <class name="com.pojo.Users">
        <composite-id>
            <key-property name="name" type="string"/>
            <key-property name="email" type="string"/>
        </composite-id>

        <property name="name" length="20"/>

        <property name="email"/>
    </class>
</hibernate-mapping>

name,email组成复合主键

 

 

Hibernate映射类型	Java类型	标准SQL类型
integer	java.lang.Integer	INTEGER
long	java.lang.Long	BIGINT
short	java.lang.Short	SMALLINT
float	java.lang.Float	FLOAT
double	java.lang.Double	DOUBLE
big_decimal	java.math.BigDecimal	NUMERIC
character	java.lang.String	CHAR(1)
string	java.lang.String	VARCHAR
byte	byte或java.lang.Byte	TINYINT
boolean	boolean或java.lang.Boolean	BIT

 

Hibernate映射类型	Java类型	标准SQL类型
yes_no	boolean或java.lang.Boolean	CHAR(1)('Y'或'N')
true_false	boolean或java.lang.Boolean	CHAR(1)('Y'或'N')
date	java.util.Date或java.sql.Date	DATE
time	java.util.Date或java.sql.Time	TIME
timestamp	java.util.Date或java.sql.Timestamp	TIMESTAMP
calendar	java.util.Calendar	TIMESTAMP
calendar_date	java.util.Calendar	DATE
binary	byte[]	VARBINARY或BLOB
text	java.lang.String	CLOB
serializable	java.io.Serializable实例	VARBINARY或BLOB
clob	java.sql.Clob	CLOB
blob	java.sql.Blob	BLOB
class	java.lang.Class	VARCHAR
locale	java.util.Locale	VARCHAR
timezone	java.util.TimeZone	VARCHAR
currency	java.util.Currency	VARCHAR