Change prefix while creatin table in Dictionary development component

Change prefix while creatin table in Dictionary development component.

Go to -> preference -> Dictionary. Change prefix.

Make JPA Entity with @OneToMany and @ManyToOne mapping tags

Problem:
Your need to make JPA Entity with @OneToMany and @ManyToOne mapping tags.

Solution:
You have tables like this:

Table "Requests":

Field	Type
ID	Integer
STEP_ID	Integer

Table "Steps":

Field	Type
ID	Integer
REQUEST_ID	Integer

Table "Requests" should have in field "Step_Id" many rows from table "Steps", and table "Steps" should have in field "Requst_Id" one row from "Requests" table.

Make JPA Entities like this:

@Entity
@Table(name="REQUESTS")
public class Requests implements Serializable {

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private long id;

@OneToMany(mappedBy="request", fetch=FetchType.EAGER)
private Set<Steps> steps = new HashSet<Steps>();


public Requests() {
}

public long getId() {
return this.id;
}

public void setId(long id) {
this.id = id;
}

public void setSteps(Set<Steps> history) {
this.steps = steps ;
}

public Set<Steps> getSteps() {
return steps;
}
}

@Entity
@Table(name="STEPS")
public class Steps implements Serializable {

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int id;

@ManyToOne(cascade = {CascadeType.MERGE, CascadeType.PERSIST}, fetch=FetchType.EAGER)
@JoinColumn(name = "REQUEST_ID")
private EoRequestsEntity request;

public Steps() {
}

public int getId() {
return this.id;
}

public void setRequest(Requests request) {
this.request = request;
}

public EoRequestsEntity getRequest() {
return request;
}

}


Tags "cascade" and "fetch" is required!

That's all!

How to create iView for sap portal web module application

Problem:
How to create iView for sap portal web module application

Solution:

1. Create URL iView and set link to your web module application. If you do not know thar, you can run it in your Netweaver Developer Studio: right hand mouse click on development component, choose Run on Server - choose your server and run it. You will see url in browser.
2. In iView properties set property Fetch Mode - Server Side.

Check if your TLD is valid against its scheme

Problem:

You have an error:

Caused by: com.sap.engine.services.servlets_jsp.jspparser_api.exception.JspParseException: Error in parsing the taglib tag in the JSP page. Cannot resolve URI: [http://java.s.com/jsf/html]. Possible reason - validation failed. Check if your TLD is valid against its scheme. 

Solution:

Put in your ear (Enterprise Application) development component in file ""META-INF/application-j2ee-engine.xml"" that code:

 <application-j2ee-engine xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:noNamespaceSchemaLocation="application-j2ee-engine.xsd"> 

    <reference reference-type="weak">

    <reference-target target-type="library" provider-name="sap.com">

       tc~ui~faces

    </reference-target>

    </reference>

  </application-j2ee-engine>

End everything works!

NWDS prompt for create activity in NWDI when editing some file

To prompt for create activity in NWDI when editing some file in NWDS you should go to Window -> Preference -> Development Infrastructure -> Design Time Repository -> Dialog Settings. In that window choose prompt.