使用Hibernate 操作Clob成功小记
使用Hibernate 操作Clob成功小记
说明：
① 代码我已经测试成功，如下代码，只供借鉴。
② 我的开发环境是：JBuilder2006+Oracle9i
③ 文章如需引用转载，请注明出处
一、创建数据库
我使用的创建数据库的代码如下：
DROP TABLE INDUSTRYTYPE;
CREATE TABLE INDUSTRYTYPE
(
TYPEID NUMBER(10) PRIMARY KEY,
TYPENAME VARCHAR2(100) NOT NULL,
DESCRIPTION VARCHAR2(100) NOT NULL
);
DROP SEQUENCE INDUSTRYTYPE_SEQ;
CREATE SEQUENCE INDUSTRYTYPE_SEQ INCREMENT BY 1 START WITH 4000;
DROP TABLE INDUSTRY;
CREATE TABLE INDUSTRY
(
INDU_ID NUMBER(10) PRIMARY KEY,
ADMIN_ID NUMBER(10) NOT NULL,
TYPEID NUMBER(10) NOT NULL,
ISSUEDATE DATE NOT NULL,
CONTENT CLOB
);
DROP SEQUENCE INDUSTRY_SEQ;
CREATE SEQUENCE INDUSTRY_SEQ INCREMENT BY 1 START WITH 1;
二、 在Eclipse中创建POJO和映射文件
我的代码如下：
1. AbstractIndustry.java
/*
* WARNING: DO NOT EDIT THIS FILE. This is a generated file that is synchronized
* by MyEclipse Hibernate tool integration.
*
* Created Tue Feb 28 16:38:20 CST 2006 by MyEclipse Hibernate Tool.
*/
import java.io.Serializable;
/**
* A class that represents a row in the INDUSTRYTYPE table.
* You can customize the behavior of this class by editing the class, {@link Industrytype()}.
* WARNING: DO NOT EDIT THIS FILE. This is a generated file that is synchronized
* by MyEclipse Hibernate tool integration.
*/
public abstract class AbstractIndustrytype
implements Serializable
{
/** The cached hash code value for this instance. Settting to 0 triggers re-calculation. */
private int hashValue = 0;
/** The composite primary key value. */
private java.lang.Long typeid;
/** The value of the simple typename property. */
private java.lang.String typename;
/** The value of the simple description property. */
private java.lang.String description;
/**
* Simple constructor of AbstractIndustrytype instances.
*/
public AbstractIndustrytype()
{
}
/**
* Constructor of AbstractIndustrytype instances given a simple primary key.
* @param typeid
*/
public AbstractIndustrytype(java.lang.Long typeid)
{
this.setTypeid(typeid);
}
/**
* Return the simple primary key value that identifies this object.
* @return java.lang.Long
*/
public java.lang.Long getTypeid()
{
return typeid;
}
/**
* Set the simple primary key value that identifies this object.
* @param typeid
*/
public void setTypeid(java.lang.Long typeid)
{
this.hashValue = 0;
this.typeid = typeid;
}
/**
* Return the value of the TYPENAME column.
* @return java.lang.String
*/
public java.lang.String getTypename()
{
return this.typename;
}
/**
* Set the value of the TYPENAME column.
* @param typename
*/
public void setTypename(java.lang.String typename)
{
this.typename = typename;
}
/**
* Return the value of the DESCRIPTION column.
* @return java.lang.String
*/
public java.lang.String getDescription()
{
return this.description;
}
/**
* Set the value of the DESCRIPTION column.
* @param description
*/
public void setDescription(java.lang.String description)
{
this.description = description;
}
/**
* Implementation of the equals comparison on the basis of equality of the primary key values.
* @param rhs
* @return boolean
*/
public boolean equals(Object rhs)
{
if (rhs == null)
return false;
if (! (rhs instanceof Industrytype))
return false;
Industrytype that = (Industrytype) rhs;
if (this.getTypeid() == null || that.getTypeid() == null)
return false;
return (this.getTypeid().equals(that.getTypeid()));
}
/**
* Implementation of the hashCode method conforming to the Bloch pattern with
* the exception of array properties (these are very unlikely primary key types).
* @return int
*/
public int hashCode()
{
if (this.hashValue == 0)
{
int result = 17;
int typeidValue = this.getTypeid() == null ? 0 : this.getTypeid().hashCode();
result = result * 37 + typeidValue;
this.hashValue = result;
}
return this.hashValue;
}
}
2. Industrytype.java
/*
* Created Tue Feb 28 16:38:20 CST 2006 by MyEclipse Hibernate Tool.
*/
import java.io.Serializable;
import java.util.Set;
/**
* A class that represents a row in the 'INDUSTRYTYPE' table.
* This class may be customized as it is never re-generated
* after being created.
*/
public class Industrytype extends AbstractIndustrytype implements Serializable {
/**
* 存储某一种类型的所有行业交流
*/
private Set induSet;
/**
* Simple constructor of Industrytype instances.
*/
public Industrytype() {
}
/**
* Constructor of Industrytype instances given a simple primary key.
* @param typeid
*/
public Industrytype(java.lang.Long typeid) {
super(typeid);
}
public void setInduSet(Set induSet) {
this.induSet = induSet;
}
public Set getInduSet() {
return induSet;
}
/* Add customized code below */
}
3. Industrytype.hbm.xml
<?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">
<!-- DO NOT EDIT: This is a generated file that is synchronized -->
<!-- by MyEclipse Hibernate tool integration. -->
<!-- Created Tue Feb 28 16:38:20 CST 2006 -->
<hibernate-mapping package="com.scenechina.vr.model">
<class name="Industrytype" table="INDUSTRYTYPE">
<id name="typeid" column="TYPEID" type="java.lang.Long">
<generator class="assigned"/>
</id>
<property name="typename" column="TYPENAME" type="java.lang.String" not-null="true"/>
<property name="description" column="DESCRIPTION" type="java.lang.String" not-null="true"/>
<set name="induSet" cascade="all" inverse="true" lazy="false" table="Industry">
<key column="typeid"/>
<one-to-many class="Industry"/>
</set>
</class>
</hibernate-mapping>
4. AbstractIndustry.java
/*
* WARNING: DO NOT EDIT THIS FILE. This is a generated file that is synchronized
* by MyEclipse Hibernate tool integration.
*
* Created Tue Feb 28 16:38:20 CST 2006 by MyEclipse Hibernate Tool.
*/
import java.io.Serializable;
import java.sql.Clob;
/**
* A class that represents a row in the INDUSTRY table.
* You can customize the behavior of this class by editing the class, {@link Industry()}.
* WARNING: DO NOT EDIT THIS FILE. This is a generated file that is synchronized
* by MyEclipse Hibernate tool integration.
*/
public abstract class AbstractIndustry implements Serializable {
/** The cached hash code value for this instance. Settting to 0 triggers re-calculation. */
private int hashValue = 0;
/** The composite primary key value. */
private java.lang.Long induId;
/** The value of the simple adminId property. */
private java.lang.Long adminId;
/** The value of the simple typeid property. */
private java.lang.Long typeid;
/** The value of the simple issuedate property. */
private java.util.Date issuedate;
/** The value of the simple content property. */
private Clob content;
/** the value of the title of the industry */
private String title;
/**
* Simple constructor of AbstractIndustry instances.
*/
public AbstractIndustry() {
}
/**
* Constructor of AbstractIndustry instances given a simple primary key.
* @param induId
*/
public AbstractIndustry(java.lang.Long induId) {
this.setInduId(induId);
}
/**
* Return the simple primary key value that identifies this object.
* @return java.lang.Long
*/
public java.lang.Long getInduId() {
return induId;
}
/**
* Set the simple primary key value that identifies this object.
* @param induId
*/
public void setInduId(java.lang.Long induId) {
this.hashValue = 0;
this.induId = induId;
}
/**
* Return the value of the ADMIN_ID column.
* @return java.lang.Long
*/
public java.lang.Long getAdminId() {
return this.adminId;
}
/**
* Set the value of the ADMIN_ID column.
* @param adminId
*/
public void setAdminId(java.lang.Long adminId) {
this.adminId = adminId;
}
/**
* Return the value of the TYPEID column.
* @return java.lang.Long
*/
public java.lang.Long getTypeid() {
return this.typeid;
}
/**
* Set the value of the TYPEID column.
* @param typeid
*/
public void setTypeid(java.lang.Long typeid) {
this.typeid = typeid;
}
/**
* Return the value of the ISSUEDATE column.
* @return java.util.Date
*/
public java.util.Date getIssuedate() {
return this.issuedate;
}
/**
* Set the value of the ISSUEDATE column.
* @param issuedate
*/
public void setIssuedate(java.util.Date issuedate) {
this.issuedate = issuedate;
}public String getTitle() {
return title;
}
public Clob getContent() {
return content;
}
public void setTitle(String title) {
this.title = title;
}
public void setContent(Clob content) {
this.content = content;
}
/**
* Implementation of the equals comparison on the basis of equality of the primary key values.
* @param rhs
* @return boolean
*/
public boolean equals(Object rhs) {
if (rhs == null) {
return false;
}
if (!(rhs instanceof Industry)) {
return false;
}
Industry that = (Industry) rhs;
if (this.getInduId() == null || that.getInduId() == null) {
return false;
}
return (this.getInduId().equals(that.getInduId()));
}
/**
* Implementation of the hashCode method conforming to the Bloch pattern with
* the exception of array properties (these are very unlikely primary key types).
* @return int
*/
public int hashCode() {
if (this.hashValue == 0) {
int result = 17;
int induIdValue = this.getInduId() == null ? 0 :