RE: [Hibernate] NullPointerException on Session.find

[Boring, J. W, A. <jb...@at...>]

>Nothing obviously wrong in what you have given so far.<=20

That's good news. At least I'm not totally off track!

> you will have to show a bit more code than that....<

here it is:

public class JWBDemo {
=09
	private static SessionFactory sf;
	private static Datastore ds;
	private static Session myS;

public static void main( String[] no_args ) throws Exception {
	=09
	ds =3D Hibernate.createDatastore()
		.storeClass(Edge.class)
		.storeClass(Vertex.class)
		.storeClass(Department.class);
		=09
	sf =3D ds.buildSessionFactory();
	Session myS =3D sf.openSession();
	doDept();	=09
}
=09
public static void doDept() throws Exception {
	=09
	String name =3D null;
	List depts =3D null;
	Department aDept =3D null;
	String Id =3D new String ("A00");
	=09
	try {
		depts =3D myS.find(
				"from Department in class boring.sandbox.Department" );
		Iterator it =3D depts.iterator();
		aDept =3D (Department) it.next();
		name =3D aDept.getName();
		System.out.println(aDept);
	}
	catch (Exception e){
		 e.printStackTrace();
		 }=09
	}

-----Original Message-----
From: Gavin King [mailto:ga...@ap...]
Sent: Monday, September 30, 2002 2:12 PM
To: Boring, Jeff W, ALBAS; hib...@li...
Subject: Re: [Hibernate] NullPointerException on Session.find


Hmmmm. not sure. you will have to show a bit more code than that....

Nothing obviously wrong in what you have given so far.

----- Original Message -----
From: "Boring, Jeff W, ALBAS" <jb...@at...>
To: <hib...@li...>
Sent: Tuesday, October 01, 2002 3:58 AM
Subject: [Hibernate] NullPointerException on Session.find


> Help!!!!
>
> Newbie here trying some basic code and getting a nullpointer on the =
find.
I know it is something stupid I'm doing. Thanks for any help.
>
> Code is:
>
> depts =3D myS.find("from Department in class =
boring.sandbox.Department" );
>
> ---------------------- console ----------------------
> [INFO] DatastoreImpl - -Mapping resource: =
cirrus/hibernate/eg/Edge.hbm.xml
> [INFO] XMLHelper - -Parsing XML: unknown system id
> [INFO] DatastoreImpl - -Mapping resource:
cirrus/hibernate/eg/Vertex.hbm.xml
> [INFO] XMLHelper - -Parsing XML: unknown system id
> [INFO] Environment - -loaded properties from resource =
hibernate.properties
> [INFO] Environment - -echoing all SQL to stdout
> [INFO] Environment - -using java.io streams to persist binary types
> [INFO] Environment - -JVM proxy support: true
> [WARN] Collection - -Attribute "order-by" ignored in JDK1.3 or less
> [WARN] Collection - -Attribute "order-by" ignored in JDK1.3 or less
> [INFO] DatastoreImpl - -Mapping resource:
boring/sandbox/Department.hbm.xml
> [INFO] XMLHelper - -Parsing XML: unknown system id
> [INFO] Dialect - -Using dialect: class cirrus.hibernate.sql.DB2Dialect
> [INFO] DriverManagerConnectionProvider - -Hibernate connection pool =
size:
2
> [INFO] DriverManagerConnectionProvider - -Using driver:
COM.ibm.db2.jdbc.app.DB2Driver at URL: jdbc:db2:sample
> [INFO] DriverManagerConnectionProvider - -Connection properties:
{user=3Dhibernate, password=3DthisIsStupid!}
> [INFO] PreparedStatementCache - -prepared statement cache size: 100
> [INFO] SessionFactoryImpl - -Use outer join fetching: true
> [INFO] SessionFactoryImpl - -Use scrollable result sets: true
> [INFO] SessionFactoryImpl - -Use JDBC 2 batch updates: false
> [WARN] SessionFactoryObjectFactory - -no JDNI name configured
> [INFO] SessionFactoryImpl - -Query language substitutions: {false=3D0,
no=3D'N', yes=3D'Y', true=3D1}
> [INFO] SessionFactoryImpl - -Query language imports: =
cirrus.hibernate.test
> java.lang.NullPointerException
> at boring.sandbox.JWBDemo.doDept(JWBDemo.java:50)
> at boring.sandbox.JWBDemo.main(JWBDemo.java:38)
> ---------------------- console ----------------------
> ---------------------- Department.java ----------------------
> package boring.sandbox;
> public class Department {
> private String name =3D null;
> private String number =3D null;
> private String location =3D null;
>
> public void Department(){
> }
>
> public String getName(){
> return name;
> }
> public String getNumber(){
> return number;
> }
> public String getLocation(){
> return location;
> }
> public void setName (String parm){
> name =3D parm;
> }
> public void setNumber (String parm){
> number =3D parm;
> }
> public void setLocation (String parm){
> location =3D parm;
> }
> }
> ---------------------- Department.java ----------------------
>
> ---------------------- DB Table DDL ----------------------
>  CREATE TABLE "DB2ADMIN"."DEPARTMENT"  (
>   "DEPTNO" CHAR(3) NOT NULL ,
>   "DEPTNAME" VARCHAR(29) NOT NULL ,
>   "MGRNO" CHAR(6) ,
>   "ADMRDEPT" CHAR(3) NOT NULL ,
>   "LOCATION" CHAR(16) )
> IN "USERSPACE1" ;
>
> ALTER TABLE "DB2ADMIN"."DEPARTMENT"
> ADD CONSTRAINT "PKEY" PRIMARY KEY
> ("DEPTNO");
> ---------------------- DB Table DDL ----------------------
>
> ---------------------- Department.hbn.xml ----------------------
> <?xml version=3D"1.0"?>
> <!DOCTYPE hibernate-mapping PUBLIC
>         "-//Hibernate/Hibernate Mapping DTD//EN"
>         "http://hibernate.sourceforge.net/hibernate-mapping.dtd">
>
> <hibernate-mapping>
>
>   <class name=3D"boring.sandbox.Department" table=3D"department"
schema=3D"db2admin">
>
>     <!-- comment -->
>     <id column=3D"DEPTNO" name=3D"number" type=3D"string">
>       <generator class=3D"assigned"/>
>     </id>
>
>     <property name=3D"name" column=3D"DEPTNAME" type=3D"string" />
>     <property name=3D"location" column=3D"LOCATION" type=3D"string" />
>
>   </class>
>
> </hibernate-mapping>
> ---------------------- Department.hbn.xml ----------------------
>
> Jeff Boring
> Custom & Web Services Development
> AT&T Labs
> jb...@at...
> (813) 878-3367
>
>
>
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> hibernate-devel mailing list
> hib...@li...
> https://lists.sourceforge.net/lists/listinfo/hibernate-devel