Using the java collections

I have some questions about implementing a java core collections class(in this
case TreeSet)...
import java.util.*;
class SortA extends TreeSet
public SortA()
super();
public SortA(int y)
super(y);
When I compile this(it is not the complete program btw) i get a warning:
serializable class SortA has no definition of serialVersionUID
So my questions are these: Why am I getting this warning? is there a way to get around this? is it possible to extend the core classes?

So my questions are these: Why am I getting this
warning?Because TreeSet is Serializable and Serializable insists on having a long-type filed named serialVersionUID.
is there a way to get around this?add
public final long serialVersionUID = 1;
or something.
is it
possible to extend the core classes?Sure.

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How do I create a user, in my context in OID using the Java API

How do I create a user, with subschema, in my context in OID using the JAVA API
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Try this code , modify it accordingly
------- cut here -------
import oracle.ldap.util.*;
import oracle.ldap.util.jndi.*;
import javax.naming.NamingException;
import javax.naming.directory.*;
import java.io.*;
import java.util.*;
public class NewUser
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ldapServerPort,
rootdn,
rootpass);
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String [] mystr = null;
try {
RootOracleContext roc = new RootOracleContext(ctx);
mysub = roc.getSubscriber(ctx, Util.IDTYPE_DN, "o=dec", mystr);
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catch (UtilException e) {
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------- end cut --------
Enjoy.
Suhail

Should i use the Java edition ?

Hi,
i'm not sure if i should use the Java edition or the "normal" edition of the berkeley db.
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Thanks

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--mark

Strange memory behaviour using the System.Collections.Hashtable in object reference

Dear all,
Recently I came across a strange memory behaviour when comparing the system.collections.hashtable versus de scripting.dictionary object and thought to analyse it a bit in depth. First I thought I incorrectly destroyed references to the class and
child classes but even when properly destroying them (and even implemented a "SafeObject" with deallocate method) I kept seeing strange memory behaviour.
Hope this will help others when facing strange memory usage BUT I dont have a solution to the problem (yet) suggestions are welcome.
Setting:
I have a parent class that stores data in child classes through the use of a dictionary object. I want to store many differenct items in memory and fetching or alteging them must be as efficient as possible using the dictionary ability of retrieving key
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no memory is released at all though apears to have some internal flag that marks it as useable for another system.collection.hashtable object.
I created a small test snippet of code to test this behaviour with (running excel from the Office Plus 2010 version) The snippet contains a module to instantiate the parent class and child classes that will contain the data. One sub will test the Hash functionality
and the other sub will test the dictionary functionality.
Module1
Option Explicit
Sub testHash()
Dim Parent As parent_class
Dim d_Count As Double
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Parent.AddChildHash "TEST_hash"
Dim d_CycleCount As Double
d_CycleCount = 50000
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Next
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'According to documentation and debug messages not really required!
Set Parent.ChildContainer("TEST_hash") = Nothing
'According to documentation not really as we are leaving scope but just to be consistent.. kill the parent!
Set Parent = Nothing
End Sub
Sub testDict()
Dim Parent As parent_class
Dim d_Count As Double
'Instantiate parent class
Set Parent = New parent_class
'Create a child using the dictionary object
Parent.AddChildDict "TEST_dict"
Dim d_CycleCount As Double
d_CycleCount = 50000
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Dim s_SheetCycleCount As String
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For d_Count = 0 To d_CycleCount
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Next
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'According to documentation and debug messages not really required!
Set Parent.ChildContainer("TEST_dict") = Nothing
'According to documentation not really as we are leaving scope but just to be consistent.. kill the parent!
Set Parent = Nothing
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parent_class:
Option Explicit
Public ChildContainer As Object
Private Counter As Double
Private Sub Class_Initialize()
Debug.Print "Parent initialized"
Set ChildContainer = CreateObject("Scripting.dictionary")
End Sub
Public Sub AddChildHash(ByRef ChildKey As String)
If Not ChildContainer.Exists(ChildKey) Then
Dim TmpChild As child_class_hashtable
Set TmpChild = New child_class_hashtable
ChildContainer.Add ChildKey, TmpChild
Counter = Counter + 1
Set TmpChild = Nothing
End If
End Sub
Public Sub AddChildDict(ByRef ChildKey As String)
If Not ChildContainer.Exists(ChildKey) Then
Dim TmpChild As child_class_dict
Set TmpChild = New child_class_dict
ChildContainer.Add ChildKey, TmpChild
Counter = Counter + 1
Set TmpChild = Nothing
End If
End Sub
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Debug.Print "Parent being killed, first kill all childs (if there are any left!) - muahaha"
Set ChildContainer = Nothing
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End Sub
child_class_dict
Option Explicit
Public MemmoryLeakObject As Object
Private Sub Class_Initialize()
Debug.Print "Child using Scripting.Dictionary initialized"
Set MemmoryLeakObject = CreateObject("Scripting.Dictionary")
End Sub
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End Sub
Private Sub Class_Terminate()
Debug.Print "Child using Scripting.Dictionary terminated"
Set MemmoryLeakObject = Nothing
End Sub
child_class_hash:
Option Explicit
Public MemmoryLeakObject As Object
Private Sub Class_Initialize()
Debug.Print "Child using System.Collections.Hashtable initialized"
Set MemmoryLeakObject = CreateObject("System.Collections.Hashtable")
End Sub
Public Sub InsertDataToHash(ByRef KeyValue As String, ByRef DataValue As String)
If Not MemmoryLeakObject.ContainsKey(KeyValue) Then MemmoryLeakObject.Add KeyValue, DataValue
End Sub
Private Sub Class_Terminate()
Debug.Print "Child using System.Collections.Hashtable terminated"
Set MemmoryLeakObject = Nothing
End Sub
Statistics:
TEST: (Chronologically ordered)
1.1 Excel starting memory: 25.324 kb approximately
Max memory usage after hash (500.000 records) 84.352 kb approximately
Memory released: 0 %
1.2 max memory usages after 2nd consequtive hash usage 81.616 kb approximately
"observation:
- memory is released then reused
- less max memory consumed"
1.3 max memory usages after 3rd consequtive hash usage 80.000 kb approximately
"observation:
- memory is released then reused
- less max memory consumed"
1.4 Running the dictionary procedure after any of the hash runs will start from the already allocated memory
In this case from 80000 kb to 147000 kb
Close excel, free up memory and restart excel
2.1 Excel starting memory: 25.324 kb approximately
Max memory usage after dict (500.000 records) 90.000 kb approximately
Memory released: 91,9%
2.2 Excel starting memory 2nd consequtive dict run: 27.552 kb approximately
Max memory usage after dict (500.000 records) 90.000 kb approximately
Memory released: 99,4%
2.3 Excel starting memory 3rd consequtive dict run: 27.712 kb approximately
Max memory usage after dict (500.000 records) 90.000 kb approximately
Memory released:

Hi Cor,
Thank you for going through my post and took the time to reply :) Most apreciated. The issue I am facing is that the memory is not reallocated when using mixed object types and is not behaving the same. I not understand that .net versus the older methods
use memory allocation differently and perhaps using the .net dictionary object (in stead of the scripting.dictionary) may lead to similar behaviour. {Curious to find that out -> put to the to do list of interesting thingies to explore}
I agree that allocated memory is not a bad thing as the blocks are already assigned to the program and therefore should be reallocated with more performance. However the dictionary object versus hashtable perform almost identical (and sometimes even favor
the dictionary object)
The hashtable is clearly the winner when dealing with small sets of data.
The issue arises when I am using the hash table in conjunction with another type, for example a dictionary, I see that the dictionary object's memory is stacked on top of the claimed memory space of the hashtable. It appears that .net memory allocation and
reuse is for .net references only. :) (Or so it seems)
In another example I got with the similar setup, I see that the total used memory is never released or reclaimed and leakage of around 20% allocated memory remains to eventually crash the system with the out of memory message. (This is when another class
calls the parent class that instantiates the child class but thats not the point of the question at hand)
This leakage drove me to investigate and create the example of this post in the first place. For the solution with the class -> parent class -> child class memory leak I switched all to dictionaries and no leakage occurs anymore but nevertheless thought
it may be good to share / ask if anyone else knows more :D (Never to old to learn something new)

Why to use the Java API in MDM

Hi Experts,
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Regards

Hi Vijay,
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How to use the Java embedding activity in BPel

hi all,
How to use the java embedding activity in BPEL
pls can u provide sample example

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I put in code (Source View) the following
<bpelx:exec import="java.util.regex.Matcher"/>
<bpelx:exec import="java.util.regex.Pattern"/>
example2:
Object temp;
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Using the JAVA ImportXmlTemplate function, should I always use XSL directory?

Using the JAVA ImportXmlTemplate function requires XSL directory, I do not need XSL for my updates, how can I workaround this requirement?

Ok, thanks for your quick answer. I saw you last blog posting regarding simple bar codes, I hope your next one turns up soon (read: today ;-) ).
I did take a swing at writing my own class according to the user guide, using JDeveloper. One of my problems is that I am not that familiar with the whole java world, my experience lies almost entirely within .NET development. So when I read stuff like "make sure the class is available in the classpath for the JVM" and things like that, it is not a detailed enough description for me in order to make anything out of it. Do you think you can clarify that for me?
I also wonder if you have any tips and tricks on how to trace/log information from the class when it executes? Because I think that I can actually get it to be called, it's just that something goes wrong and the generated PDF becomes badly formatted and has no content. I can see that some calls are made to a Logger class inside the example class. I guess that I need to set up some runtime configuration for that information to turn up in a file, but again me lacking experience from the java world prevents me from accomplishing that :-)
Regarding tracing and logging from the java classes for the BI Publisher, can I get them to trace or log debug information in some clever way?
The app I am developing is a .NET app that calls these classes using a product called juggerNET. I am developing a print direct application for JDEdwards EnterpriseOne since BI Publisher is not entirely integrated into it yet.
I would greatly appreciate a quick reply this time as well if you can find the time!
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Handle a pdf using using the Java-based programming

Could I handle a PDF document created by LiveCycle using the Java-based programming?
I want to say, don't use the LiveCycle server-based application.
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Could I handle a PDF document created by LiveCycle using the Java-based programming?
I want to say, don't use the LiveCycle server-based application.
I'm developing a small desktop application. This application read from the database and populate a PDF document. The PDF document has many forms and they use a button to increment the field in the subform or duplicate the subform.

Using the Java API

Hi everyone,
I just wanted to see if anyone knows whether I need a license to use the Java API included in the trial version of Adobe LiveCycle ES.
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I would appreciate your help.
Thanks.
Mira.

Mira
You don't need a license as long as the application you're building is for evaluation or testing, and NOT for production use.
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Licensing can be complex, and you should contact your local Adobe office or enterprise partner for details.
XPAAJ was never free, it was bundled with other Adobe products.
It has been deprecated, and is no longer supplied or supported, as far as I'm aware. You will need to purchase a LiveCycle license of some sort.
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Using the java (tm) Icon...

If you've made an application, can you use the JAVA icon (as in the left top corner of this page) in the aboutdialog of your application?
Is it legal?
thx,
sjg

Short answer, no. See http://www.sun.com/smrc/logos/brand

Using the Java API to address a specific instance

Hi,
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<portType name="Exp2">
<operation name="initiate">
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I understand that i should use something like...
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I also know that I need to use correlation on this but I don't know how.
I would really apreciate some help on this.
Thanks...

This is a very good question: here is a code snippet that shows how you can add a conversation id to the NormalizedMessage that you are sending to the delivery service.
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// delivery service
NormalizedMessage nm = new NormalizedMessage( );
nm.setProperties(properties );
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Please note that if at some point you want to perform any of the 2 calls through the SOAP channel, you can embed he conversationId in the WS-Addressing header within the relateTo element.
I hope this helps.
Edwin

Using the Java APIs

I am attempting to use the java api in my reporting solution. The application that we are developing is using JSF and java. I wanted to keep the same look and feel for my reports.
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XDOException <Line 43, Column 93>: XSL-1015: (Error) Function 'current-group' not found.
However, I can successfully preview this template (with data) in Microsoft Word. Any ideas what may cause this.

It's either a template issue or your missing some jar files (probably jar files).
I would highly recommend you download the BIPublisherIDE. All this code and framework is already written and it's free!
http://bipublisher.blogspot.com/2008/03/bi-publisher-bipublisheride.html
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http://bipublisher.blogspot.com

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In org.w3c.dom (the "Java DOM"), Documents, Elements and Nodes are interfaces all representing the components of an XML document, which is a tree structure where each node can have 0+ children (representing the recursive nature of XML itself). The Document interface represents the entire document, whereas Elements (which extend Nodes) represent a specific tag/element in an XML document, and all of its children (the subtree extending from the Element).
QUESTION #1: What class, then, actually represents the tree data structure of the XML document? Document, Element and Node are interfaces, meaning they can only provide abstract methods and static members. For instance, Node has a method called "getFirstChild()"... since this is an interface method, it has to be abstract... so where is it defined? Another way to look at this question is:
noises.xml
========
<animals>
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</animals>
DomTestDriver.java
==================
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DocumentBuilder db = dbf.newInstance();
Document doc = db.parse("noises.xml");
Element root = doc.getRoot();
Element cow = root.getFirstChild();Here I have read/parsed noises.xml into a Document object. I am now free to explore the document, modifying it as I wish, etc. When I call root.getFirstChild(), somewhere, somehow, a tree structure is holding an in-memory version of noises.xml, and getFirstChild() queries that structure for the correct Node to return... what is this structure?!? It must be a class... so what is it???
***End of Question #1***
Second, it would be nice if I could modify a Document object or Element at runtime. For instance:
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     */Several problems with the code sample above:
(1) Element is an interface! I can't instantiate it like "Element horse = new Element();"
(2) Neither Element nor Node specify a "setTageName(String)" method, telling me that Java     does not want me using the Java DOM like this... why?!?!
QUESTION #2: So, if my code sample above doesn't work, how do I create new Element objects and insert them into my Document object, or into another Element's subtree?

the top hit for the google search "java dom tutorial" should answer questions 2 and 3. as for 1, the answer is "it doesn't matter". the point of frameworks designed like this is that each jdk implementation is free to provide its own, compatible dom implementation. in case you are curious, the sun jdk implementation uses a modified version of apache xerces, but like i said, that doesn't really matter and should not be visible to you.

Using the java collections

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