Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [eclipselink-users] DynamicClass Name containing a dot
Thanks James for the clarification. I missed the fact that I was using the alias.
Instead of getAlias() I should use getJavaClassName().
Better still I will consider having different type names across the packages.

Thanks
Rohit

On 4/13/2011 8:18 PM, James Sutherland wrote: 
The issue is that the alias defaults to the simple class name.

If you use the full packaged name it will get the correct class.

ReadAllQuery query2 = new DynamicHelper(session).newReadAllQuery("p2.type"); 

or,

ReadAllQuery query2 = new DynamicHelper(session).newReadAllQuery(
                               
type2Builder.getType().getDescriptor().getJavaClass().getName()); 

or just,

ReadAllQuery query2 = new
ReadAllQuery(type2Builder.getType().getDescriptor().getJavaClass());

You should set the alias on one (or both) or your descriptors to be
different, as having two descriptors with the same alias is a bad idea.

type2Builder.getType().getDescriptor().setAlias("p2.type");



Rohit Banga-2 wrote:

Hi All

When we create a DynamicClass using 
DynamicClassLoader.createDynamicClass(className), then how is the class 
name expected to be interpreted if it contains a dot character.
Lets say if the className be "p.c".
Is "p" treated as the package and "c" as the class within the package?

The attached program throws the following exception:

Exception [EclipseLink-51000] (Eclipse Persistence Services - 
2.3.0.v20110324-r9156):
org.eclipse.persistence.exceptions.DynamicException
Exception Description: Invalid DynamicEntity[DynamicEntityType(type) - 
RelationalDescriptor(p1.type --> [DatabaseTable(addrinfo)])] property 
name: addrline2
     at 
org.eclipse.persistence.exceptions.DynamicException.invalidPropertyName(DynamicException.java:66)
     at 
org.eclipse.persistence.internal.dynamic.DynamicEntityImpl.get(DynamicEntityImpl.java:145)
     at jpatest.UniqueTypeName.main(UniqueTypeName.java:79)

Ideally I would expect p1.type and p2.type to be treated as separated 
classes. Is the above behavior expected or is it a bug in Eclipselink?

-- 
Thanks and Regards
Rohit Banga
Member Technical Staff
Oracle Server Technologies

import java.util.List;
import java.util.Vector;

import org.eclipse.persistence.dynamic.DynamicClassLoader;
import org.eclipse.persistence.dynamic.DynamicEntity;
import org.eclipse.persistence.dynamic.DynamicHelper;
import org.eclipse.persistence.dynamic.DynamicTypeBuilder;
import org.eclipse.persistence.internal.sessions.DatabaseSessionImpl;
import org.eclipse.persistence.jpa.dynamic.JPADynamicTypeBuilder;
import org.eclipse.persistence.queries.ReadAllQuery;
import org.eclipse.persistence.sessions.DatabaseLogin;
import org.eclipse.persistence.sessions.DatabaseRecord;
import org.eclipse.persistence.sessions.DatabaseSession;

public class UniqueTypeName
{
	public static void main(String[] args)
	{
		DatabaseLogin login = new DatabaseLogin();
		login.setUserName("*****");
		login.setPassword("*****");
		login.setDriverURLHeader("jdbc:oracle:thin:@");
		login.setDriverClassName("oracle.jdbc.OracleDriver");
		login.setDatabaseURL("***************");
		DatabaseSession session = new DatabaseSessionImpl(login);

		session.login();

		DynamicHelper helper = new DynamicHelper(session);
		DynamicClassLoader dcl = helper.getDynamicClassLoader();

		Class<?> type1 = dcl.createDynamicClass("p1.type");
		Class<?> type2 = dcl.createDynamicClass("p2.type");

		DynamicTypeBuilder type1Builder = new JPADynamicTypeBuilder(type1, null,
"addrinfo");

		DynamicTypeBuilder type2Builder = new JPADynamicTypeBuilder(type2, null,
"addrinfo");

		type1Builder.setPrimaryKeyFields("addrid");
		type1Builder.addDirectMapping("addrid", String.class, "addrid");
		type1Builder.addDirectMapping("addrline1", String.class, "addr1");

		type2Builder.setPrimaryKeyFields("addrid");
		type2Builder.addDirectMapping("addrid", String.class, "addrid");
		type2Builder.addDirectMapping("addrline1", String.class, "addr1");
		type2Builder.addDirectMapping("addrline2", String.class, "addr2");

		helper.addTypes(false, true, type2Builder.getType(),
type1Builder.getType());

		ReadAllQuery query = new DynamicHelper(session).newReadAllQuery(
				type1Builder.getType().getDescriptor().getAlias());
		
		query.prepareCall(session, new DatabaseRecord());
		System.out.println("query: " + query.getSQLString());

		List<DynamicEntity> emps = (List<DynamicEntity>)
session.executeQuery(query);

		for (DynamicEntity entity : emps)
		{
			System.out.println(entity.get("addrid"));
			System.out.println(entity.get("addrline1"));
			System.out.println();
		}

		ReadAllQuery query1 = new DynamicHelper(session).newReadAllQuery(
				type2Builder.getType().getDescriptor().getAlias());

		query1.prepareCall(session, new DatabaseRecord());
		System.out.println("query: " + query1.getSQLString());

		emps = (List<DynamicEntity>) session.executeQuery(query1);
		for (DynamicEntity entity : emps)
		{
			System.out.println(entity.get("addrid"));
			System.out.println(entity.get("addrline1"));
			System.out.println(entity.get("addrline2"));
			System.out.println();
		}

	}
}




-----
http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland 
http://www.eclipse.org/eclipselink/
 EclipseLink ,  http://www.oracle.com/technology/products/ias/toplink/
TopLink 
Wiki:  http://wiki.eclipse.org/EclipseLink EclipseLink , 
http://wiki.oracle.com/page/TopLink TopLink 
Forums:  http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , 
http://www.nabble.com/EclipseLink-f26430.html EclipseLink 
Book:  http://en.wikibooks.org/wiki/Java_Persistence Java Persistence 
Blog:  http://java-persistence-performance.blogspot.com/ Java Persistence
Performance

--
Thanks and Regards
Rohit Banga
Member Technical Staff
Oracle Server Technologies

Back to the top