VBJ - How to add a new component to a profile in an IOR?

Problem:

• Product Name: VisiBroker Java
• Product Version: 4.5.1 and later
• Product Component: IOR/Component
• Platform/OS Version: All
• JDK/Compiler Version: JDK 1.3 and later

How to add a new component that would contain generic information like PID to an IOR?

Resolution:

Please follow these steps:
 
1. Install IORCreationInterceptor. Please refer to the "interceptors/ior_creation" example directory to see how this is done.

2. During the create() method of the IORCreationInterceptor installed, obtain the process ID, check for a null component in the profile, and create/add the component to the profile.

Below is the code sample:

// SampleIORCreationInterceptor.java
import com.inprise.vbroker.PortableServerExt.*;
import com.inprise.vbroker.IOP.*;
import com.inprise.vbroker.IIOP.*;

public class SampleIORCreationInterceptor implements IORCreationInterceptor {
  protected org.omg.CORBA.ORB _orb;

  public SampleIORCreationInterceptor(org.omg.CORBA.ORB orb) {
    _orb = orb;
  }
  
  public void create(org.omg.PortableServer.POA poa, IORValueHolder ior) {
    System.out.println("============>SampleIORCreationInterceptor: create");
    com.inprise.vbroker.orb.ORB thisORB= (com.inprise.vbroker.orb.ORB) _orb;

    ComponentValue [] myNewCompList = null;
    if (thisORB == null) {
      System.out.println("null ORB");
      System.exit(0);
    }
    com.inprise.vbroker.properties.PropertyManager pm = thisORB.getPropertyManager();

    int processID = pm.getInt("vbroker.orb.procId");
 
    for (int i=0; i<ior.value.profiles.length ; i  ) {
      if (((ProfileBodyValue)ior.value.profiles).components == null) {
        myNewCompList = new ComponentValue[1];
        myNewCompList[0] = new GenericIDComponentImpl(thisORB, processID);
      } else {
        int len = ((ProfileBodyValue)ior.value.profiles).components.length;
        myNewCompList = new ComponentValue[1   len];
        System.arraycopy(((ProfileBodyValue)ior.value.profiles).components, 0, myNewCompList, 0, len);
        myNewCompList[len] = new GenericIDComponentImpl(thisORB, processID);
      }
      ((ProfileBodyValue)ior.value.profiles).components = myNewCompList;
    }//end for loop
  }// end create()
}

The two supporting classes, GenericIDComponentImpl and TAG_GENERIC_ID, are as follows:

//GenericIDComponentImpl.java
import com.inprise.vbroker.orb.ORB;
import com.inprise.vbroker.CORBA.portable.*;
import com.inprise.vbroker.IOP.*;

public class GenericIDComponentImpl implements ComponentValue, Cloneable {
  final ORB _orb;
  int _GenericID;
  TaggedComponent _component;

  public GenericIDComponentImpl(ORB orb, int gID) {
    _orb = orb;
    _GenericID=gID;
  }

  public GenericIDComponentImpl(ORB orb, EntityRegistry registry, TaggedComponent component) {
    _orb = orb;
    if (component == null || component.tag != TAG_GENERIC_ID.value) {
      throw new org.omg.CORBA.BAD_PARAM("Invalid tagged component: "   component);
    }
    _component=component;
  }

  public int tag() {
    return TAG_GENERIC_ID.value;
  }

  public com.inprise.vbroker.IOP.ComponentValue copy() {
    try {
      return (com.inprise.vbroker.IOP.ComponentValue)this.clone();
    } catch(CloneNotSupportedException e) {
      throw new org.omg.CORBA.INTERNAL(e.toString());
    }
  }

  public int type() {
    if(_component!=null) {
      // need to demarshal
      InputStream input = (InputStream)_orb.create_cdr_input_stream(_component.component_data);
      input.byteOrder(input.read_boolean());
      _GenericID = input.read_ulong();
      input.destroy();
      _component=null;
    }
    return _GenericID;
  }

  public boolean matchesTemplate(com.inprise.vbroker.IOP.ComponentValue template) {
    if (!(template instanceof GenericIDComponentImpl)) {
      return false;
    }
    return ((GenericIDComponentImpl) template).tag()==tag();
  }

  public TaggedComponent toTaggedComponent() {
    TaggedComponent component=_component;
    if(component==null) {
      OutputStream output = (OutputStream)_orb.create_cdr_output_stream();
      output.write_boolean(ORB.JAVA_ENDIAN);
      output.write_ulong(type());
      component = new TaggedComponent(this.tag(), output.toByteArray());
      output.destroy();
    }
    return component;
  }
 
  public String prettyPrint() {
    StringBuffer sb=new StringBuffer("GENERIC_ID Component: ");
    sb.append("Process ID = "   type());
    return sb.toString();
  }

  public String[] _truncatable_ids() {
    return new String[0];
  }
}

//TAG_GENERIC_ID.java
public interface TAG_GENERIC_ID {
  public final static int value = (int)9112001;
}

 
Support Case # 523087