idea 4.5 + tomcat 4

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2005-03 ( 2)
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IDEA Tomcat Oracle Hibernate Java

0、拷贝tomcat5.0的common/lib/下的文件到tomcat4.1的common/lib/下
commons-dbcp-1.2.jar
commons-el.jar
commons-pool-1.2.jar

1、Hibernate 整到Module Libraries中去
cglib-full-2.0.1.jar
commons-collections-2.1.jar
commons-lang-1.0.1.jar
commons-logging-1.0.3.jar
dom4j-1.4.jar
ehcache-0.7.jar
hibern8ide.jar
hibernate-tools.jar
hibernate2.jar
jdom.jar
jta.jar
odmg-3.0.jar
oscache-2.0.jar

2、ojdbc14.jar 整到JDK的Classpath中去（Hibernate中的Clob字段）
（http://otn.oracle.com/software/tech/java/sqlj_jdbc/content.html）
（http://otn.oracle.com/software/tech/java/sqlj_jdbc/htdocs/jdbc9201.html）
并且要拷贝到tomcat4.1的common/lib/目录中

1、Blob和BLOB的问题

java.sql.Blob
oracle.sql.BLOB

这两个blob仅仅是大小写不同，但是差异很大，java.sql.Blob是一个接口，而oracle.sql.BLOB是一个实现java.sql.Blob的类，并且还有很多扩展的属性和方法，注意不要搞混了。

2、JDBC2.0和JDBC3.0的问题

classes12.zip实现了JDBC2.0(JDK1.3)，而JDBC2.0对于Blob的操作只有读，没有写，所以classes12.zip只好自己扩展了一套对Blob进行写的API，我的例子就是用了这套API。

ojdbc14.jar实现了JDBC3.0(JDK1.4)，JDBC3.0已经包括了对Blob写的操作，而ojdbc14.jar也实现了该API。

jconn2d.jar sybaseJDBCDriver

//3、zpt.jar 整到Module Libraries中去（Hibernate）
其中要包含javax/transaction/Synchronization
（取至weblogic.jar）
3、jta.jar 从oracle\ora90\jlib\下整到Module Libraries中去（Hibernate）
其中要包含javax/transaction/Synchronization

4、DataSource DataSource ds=(DataSource)new InitialContext().lookup("java:comp/env/jdbc/pmis");
配置tomcat4.1的conf/server.xml文件，加入如下：

<Context path="/pmis" docBase="pmis">
              <Resource name="jdbc/pmis" scope="Shareable" type="javax.sql.DataSource"/>
              <ResourceParams name="jdbc/pmis">
                  <parameter>
                      <name>factory</name>
                      <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
                      </parameter>
                  <!-- DBCP database connection settings -->
                  <parameter>
                      <name>url</name>
                      <value>jdbc:oracle:thin:@10.161.161.135:1521:oradb</value>
                  </parameter>
                  <parameter>
                      <name>driverClassName</name>
                      <value>oracle.jdbc.driver.OracleDriver</value>
                  </parameter>
                  <parameter>
                      <name>username</name>
                      <value>pmis</value>
                  </parameter>
                  <parameter>
                      <name>password</name>
                      <value>pmiswh</value>
                  </parameter>
                  <!-- DBCP connection pooling options -->
                  <parameter>
                      <name>maxWait</name>
                      <value>3000</value>
                  </parameter>
                  <parameter>
                      <name>maxIdle</name>
                      <value>100</value>
                  </parameter>
                  <parameter>
                      <name>maxActive</name>
                      <value>10</value>
                  </parameter>
              </ResourceParams>
          </Context>

5、Clob

public void add(Cat obj); throws Exception{
                Session sess=HibernateUtil.currentSession();;
                Transaction tx=sess.beginTransaction();;
        
                obj.setMes(Hibernate.createClob(" "););;
                sess.save(obj);;
                sess.flush();;
        
                sess.refresh(obj, LockMode.UPGRADE);;
                CLOB clob=(CLOB);obj.getMes();;
                Writer pw=clob.getCharacterOutputStream();;
                pw.write(obj.getMesString(););;
                pw.flush();;
                pw.close();;
                sess.flush();;
        
                tx.commit();;
                HibernateUtil.closeSession();;
            }
            public void add1(Cat obj); throws Exception{
                Context ctx=new InitialContext();;
                DataSource ds=(DataSource);ctx.lookup("java:comp/env/jdbc/pmis");;
                Connection conn=ds.getConnection();;
                conn.setAutoCommit(false);;
                Statement stmt=conn.createStatement();;
                stmt.executeUpdate("update cat set mes=empty_clob(); where id=2079");;
                ResultSet rs=stmt.executeQuery("select mes from cat where id=2079 for update");;
                if(rs.next(););{
                    //CLOB clob=((OracleResultSet);rs);.getCLOB("mes");;
                    CLOB clob=(CLOB);rs.getClob("mes");;
                    Writer pw=clob.getCharacterOutputStream();;
                    pw.write(obj.getMesString(););;
                    pw.flush();;
                    pw.close();;
                }
                rs.close();;
                stmt.close();;
                conn.commit();;
                conn.close();;
            }
            public List lists(); throws Exception{
                Session sess=HibernateUtil.currentSession();;
                Query query=sess.createQuery("from Cat");;
                List list=query.list();;
                HibernateUtil.closeSession();;
                for(int i=0; i<list.size();; i++);{
                    Cat obj=(Cat);list.get(i);;
                    obj.setMesString(obj.getMes();==null?null:obj.getMes();.getSubString(1, (int);obj.getMes();.length();););;
                }
                return list;
            }

package pmis.common.hibAccess;

import net.sf.hibernate.*;
import net.sf.hibernate.cfg.*;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static 
    {
        try 
        {
            sessionFactory = new Configuration();.configure();.buildSessionFactory();;
        } 
        catch (HibernateException ex); 
        {
            throw new RuntimeException("Exception building SessionFactory: " + ex.getMessage();, ex);;
        }
    }

    public static final ThreadLocal session = new ThreadLocal();;

    public static Session currentSession(); throws HibernateException 
    {
        Session s = (Session); session.get();;
        // Open a new Session, if this Thread has none yet
        //if (s == null); 
        {
            s = sessionFactory.openSession();;
            session.set(s);;
        }
        return s;
    }

    public static void closeSession(); throws HibernateException 
    {
        Session s = (Session); session.get();;
        session.set(null);;
        if (s != null);
        {
            s.close();;
        }
    }
}



package test;

import pmis.common.hibAccess.HibernateUtil;

import javax.sql.DataSource;
import javax.naming.InitialContext;
import javax.naming.Context;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.Connection;
import java.io.Writer;

import net.sf.hibernate.Session;
import ammeter.valueObject.TsBmRelation;
import oracle.sql.CLOB;

/**
 * Created by IntelliJ IDEA.
 * User: zpt
 * Date: 2005-1-26
 * Time: 9:03:54
 * To change this template use File | Settings | File Templates.
 */
public class test {
    public test(); throws Exception{
        t2();;
    }
    private void t1(); throws Exception{
        Context iniContext=new InitialContext();;
        Context envContext=(Context);iniContext.lookup("java:comp/env");;
        DataSource ds=(DataSource);envContext.lookup("jdbc/pmis/oracle");;
        Connection conn=ds.getConnection();;
        Statement stmt=conn.createStatement();;
        ResultSet rs=stmt.executeQuery("select name from Cat");;
        String s="";
        while(rs.next(););{
            s+=rs.getString("name");;
        }
        rs.close();;
        stmt.close();;
        conn.close();;
    }
    private void t2(); throws Exception{
        Session sess=HibernateUtil.currentSession();;
        TsBmRelation obj=(TsBmRelation);sess.get(TsBmRelation.class, new Long(1971););;
        HibernateUtil.closeSession();;
    }
    private void t3(); throws Exception{
        net.sf.hibernate.HibernateException
        Context iniContext=new InitialContext();;
        Context envContext=(Context);iniContext.lookup("java:comp/env");;
        DataSource ds=(DataSource);envContext.lookup("jdbc/pmis/oracle");;
        Connection conn=ds.getConnection();;
        conn.setAutoCommit(false);;
        Statement stmt=conn.createStatement();;
        stmt.executeUpdate("update cat set mes=empty_clob(); where id=2148");;
        ResultSet rs=stmt.executeQuery("select mes from cat where id=2148 for update");;
        if(rs.next(););{
            //CLOB clob=((OracleResultSet);rs);.getCLOB("mes");;
            CLOB clob=(CLOB);rs.getClob("mes");;
            Writer pw=clob.getCharacterOutputStream();;
            pw.write("asdfasdf");;
            pw.flush();;
            pw.close();;
        }
        rs.close();;
        stmt.close();;
        conn.commit();;
        conn.close();;
    }
    private void t4(); throws Exception{
        Session sess=HibernateUtil.currentSession();;

        HibernateUtil.closeSession();;
    }
}

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