working with Oracle varrays

psycotrompus · **Joined:** Thu Jul 06, 2006 11:09 pm **Posts:** 25

I'm testing the DAO I created with Hibernate Generic DAO but I'm unable to manipulate Oracle VARRAYs in Hibernate. Does Hibernate supports this type of collection in Oracle? Can I just annotate a column with oracle.sql.ARRAY type? Here are some details might be useful to help me.

Code:

PrivilegeDAOImpl dao = (PrivilegeDAOImpl)factory.getPrivilegeDAO();
Integer[] accs = new Integer[10];
for(int i=1; i<11; i++) accs[i-1] = new Integer(i);
ArrayDescriptor desc = ArrayDescriptor.createDescriptor("PRIV_TYPE", dao.getSession().connection());
ARRAY array = new ARRAY(desc, dao.getSession().connection(), accs);
Privilege priv = new Privilege();
priv.setDescription("admin");
priv.setAccessibles(array);
dao.startTx();
Privilege p = dao.save(priv);
dao.closeTx();
assertEquals(priv, p);

Full stack trace of any exception that occurs:

java.lang.ClassCastException: $Proxy21
at oracle.sql.ArrayDescriptor.createDescriptor(ArrayDescriptor.java:148)
at oracle.sql.ArrayDescriptor.createDescriptor(ArrayDescriptor.java:114)
at com.proit.tests.HibernateUtilTest.testPrivilege(HibernateUtilTest.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

Name and version of the database currently using: Oracle 10g

psycotrompus · **Joined:** Thu Jul 06, 2006 11:09 pm **Posts:** 25

bump!

rcdlrp · **Posted:** Mon Feb 05, 2007 12:16 pm

Hi!

I had the same problem in the last week, and found the solution,
The ArrayDescriptor and ARRAY needed a Native Connection, and the mode to get this is:

cstmt = (OracleCallableStatement) getSession().connection().prepareCall(" call REP_UPDATE_STOCK_WAREHOUSE(?, ?, ?, ?, ?) ");

ArrayDescriptor descCE = ArrayDescriptor.createDescriptor("NUMBER_NT", cstmt.getConnection() );

A OracleCallableStatement.getConnection returns a Native Connection... use that for parameter the ArrayDescriptor.createDescriptor and the ClassCastException will solve.

dennys · **Joined:** Thu Jan 22, 2009 5:01 am **Posts:** 1

Hi, I try to use (OracleCallableStatement), but got the following error. It seems the case is still fail. And I also use "OracleConnection conn = (OracleConnection) session.connection();", but it got $ProxyXX error too.

Code:

org.hibernate.SessionFactory sessionFactory = getHibernateTemplate().getSessionFactory();
org.hibernate.Session session = sessionFactory.openSession();
String[] javaArray1 = {"AAAA","BBB"};
OracleCallableStatement stmt = (OracleCallableStatement) session.connection().prepareCall("SELECT * FROM table WHERE name IN (SELECT * FROM TABLE (CASE(? as NAME_LIST)) )");
ArrayDescriptor oracleCollection = ArrayDescriptor.createDescriptor("NAME_LIST", stmt.getConnection());
ARRAY jdbcArray1 = new ARRAY(oracleCollection, stmt.getConnection(), javaArray1);
stmt.setObject(1, jdbcArray1);
ResultSet r = stmt.executeQuery();
while(r.next()){
  System.out.println("OUTPUT: " + r.getString(1));
}

Error message:
[ERROR] RuntimeException Error Message : org.apache.commons.dbcp.DelegatingCallableStatement
java.lang.ClassCastException: org.apache.commons.dbcp.DelegatingCallableStatement
at com.test.webservice.fun1.getPartStatus(PartInfoDAOImpl.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:194)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:102)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:100)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:133)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3395)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2140)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2046)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1366)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)