Java Embedded Database Recommendation

Does anyone have a recommendation for a Java embedded database solution? I have been using Borland's JDatastore for a while and I have become frustrated by some of its' bugs. Has anyone had a better experience with some of the other Java embedded databases out there - for example, InstantDB or Pointbase? Or are all of these products at about the same level of maturity and reliability?
Thanks.

Take a look at our project here; http://www.mckoi.com/database/
It's an open source embeddable SQL database in Java.

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Java ME embedded database used in BlackBerry for mobile CRM

Interested in business applications of Java ME mobile technology, or in embedded database systems available for Java ME?
If so, take a look at the news posted on McObject's 'Perst Blog'. Maximizer, a British Columbia company, has adopted the Perst Lite open source, object-oriented database for Java ME to integrate with its customer relationship management (CRM) software on BlackBerry devices.
What Maximizer gets from Perst Lite -- in addition to efficient data management and 'transparent persistence' for developers -- is support for the JSR 75
specification, which enables database files to be saved to SD cards within the BlackBerry smartphones.
The post is at at [http://www.jroller.com/perst/entry/perst_lite_chosen_to_improve]{size}{font}

Spam blocked. As this user has only ever logged in here to post spam, the user account is blocked for a year.
db

Java Embedding

Hi everybody,
i'm trying to use java embedding but i haven't understand a thing... for example, if i put a simple thing like
System.out.println("Hello, World");
where does i can see what i have written? there is something like a log file?
i explain what is my goal: i would like to create a very simple database on a file and i have thinked to use java embedding to write winth easy commands like println... in my database i will write 2 variables from my bpel projec like "name" "mark" .... there is an easiest way to do that?? thanks a lot

Alex,
which version of SOA Suite you are intending to use. If you very new to BPEL, I strongly recommend that you study Orderbooking demo which contains step by step information and explains bpel. If you have soa suite installed, you can find lots of samples at <soa-suite_home>/bpel/samples directory.
for you scenario, I understand, you have front-end page like JSP, and after that you want to call BPEL and then send the data to Database. Now If you are using JSP, you may need to have following steps.
1) Prepare the database table.
2) write JSP page,
3) prepare scripts to validate the pages
4) Create BPEL process which takes desired inputs. In BPEL process, create database adapter to insert the data into specific table.
5) send the control to java class which will invoke the BPEL process. You can search on "Invoke BPEL from JSP" and you will get a lot of help on that.
You may find the steps bit complex, but if you go through Orderbooking demo, that will help you to understand soa suite functionality.

How to display a BPEL variable using Java Embedding

Hi, hope someone can help, I'm sure this is something very simple but for the life of me can't seem to find it through the tutorials including the Dev guide.
Question
=======
How can I display user defined and BPEL variables in the process activity "Java Embedding" ?
ex: System.out.println(bpws:getVariableData("myDatabaseParameterVariable")
This example doesn't work but this is basically what I am trying to achieve.
I would appreciate any help with this.
Rookie

Actually that's all the code I have.... System.out.println(myDatabaseArg);
myDatabaseArg is a simple parameter defined in the database adapter configuration wizard which is used as a criteria to retrieve data.
Just before I invoke the Read I use the Java Embedding to display the content of the parameter.

12C : SOA java embedding facing strange issues.

Hi All;
I am trying to traverse through a restulset in the java embedding but it always throwing an error
This is the code which i am running in the java embedding .
try {
System.out.println("--------------------START----------------------------");
String value =   (String) getVariableData("EmployeeNameVar");     // running fine.
System.out.println("---"+ value);    // Running fine
XMLElement name1 =
(XMLElement)getVariableData("EmployeeDBAdaptorSelectOutputVariable","EmployeesCollection","/ns7:Employees[1]/ns7:firstName");    // Thrwoing error
System.out.println("--- name "+ name1.getTextContent() +" ==" + name1.getQualifiedName());
System.out.println("--------------------END----------------------------");
}catch(Exception ex){
System.out.println(ex.getMessage());
Error coming in the log
--------------------START----------------------------
---Jennifer
faultName: {{http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure}
messageType: {{http://schemas.oracle.com/bpel/extension}RuntimeFaultMessage}
parts: {{
summary=<summary></summary>}
Please help if you have done similar in the SOA.
Vipin Kumar
Accenture Services India
https://in.linkedin.com/in/vipinckumar

Hi Nicolas;
Thanks for replying, but the variable which i am printing
String value =   (String) getVariableData("EmployeeNameVar");
// running fine
this variable i have assigned in the assigned activity and used $EmployeeDBAdaptorSelectOutputVariable.EmployeesCollection/ns7:Employees[1]/ns7:firstName to assign and its printing the value in the log.
Its a very basic program in which one db adapter fectching array from the database based on department id, and i can see db adapter returning a number of rows.
Regards;
Vipin Kumar
Accenture Services India
https://in.linkedin.com/in/vipinckumar

BPEL: invalid namespace error with DB adapter polling and java embedding

Hello
I'm using bpel 10.1.3.1.0, and I'm experiencing the following problem: I'm am not able to use the SetTitle() function in a process which polls for records using the db adapter.
Steps to reproduce the problem:
- I create a very simple bpel process which poll for records in a table.
- I deploy it, write manually a record in the polled table and the process start.
- I can see the record picked up through the visual flow in the console
- everything looks ok and the process ends correctly
- now I add a java embedding activities just after the receive
- I set the instance title like this: setTitle("Go");
- redeploy, write a record in the polled table and the process start.
- but the process ends in error with the following message "XMLDOMException has been thrown. invalid namespace for prefix xmlns"
And there is no way to make it work. Consider:
If I put the same java embedding activity in another process, for example a simple asynchronous process which just copy the input to the output, and I run from the console, the instance title is set as I want ("Go")
If I remove the three lines from the polling process
<bpelx:exec name="Java_Embedding_1" language="java" version="1.3">
<![CDATA[setTitle("Go");]]>
</bpelx:exec>
then the process is executed correctly again. I add them again and then namespace error.
Whatever statement I put in the java embedding activity (for example a string concatenation or even just a comment I have the same result: invalid namespace for prefix xmlns.
Does anybody has a suggestion to evercome the problem? I need to set the title because its a mess to find out which instance processed a specific record.
Thanks by
Paolo

I made a lot of further tests, and I can say the problem is related only to the database adapter polling mechanism.
If I create an asynchronous process, with any kind of database activity (for example select) I can set the title normally.
If I create a process which start with database table polling, then I cannot use the java embedding.
try this:
- create BPEL empty project
- drop a database adapter service and follow the wizard:
- select a connection (I tried both oracle or sqlserver connection)
- select "poll for new or changed record"
- select any table empty or with few record inside (1 or 2)
- press next 4 times
- chose delete record after read (press next)
- chose order by "no ordering" in polling options (press next 2 times)
- now drop a receive activity on the process, and connect with the polling partner link
- drop a java embedding and write any valid java statement
- deploy; if the table is empty, write a recod in the table
- the process is instantiated, but the it fails in the --> receive <-- activity with "invalid namespace" error

Java embedding in JDEV?

Using Java embedding to pull data from a database. But when i try to format the data for example:
String var1 ="Man";
String var2 = "What";
String r = var1 + "\n"+ var2;
It does not recognize the new line "\n".
Instead of getting output:
Man
What
The output is:
ManWhat
Any Ideas?

it ended up being a silly thing (it quite often does):
Under Project Properites, Profiles, Development, Paths, the output path needed to be terminated with a semi colon.
C:\ApplicationBPEL\CheckApplication\output;
Still, I think JDev should be handling this for us.
cheers
Nick

Java Embedded ME 8 - Java DB support

Can I use Java DB in a Java Embedded ME 8 application?
Thanks.

Hi,
Sorry for the slow reply. Java DB requires a JDBC driver, which in turn requires certain functionality and APIs that Java ME 8 doesn't provide.
There are some lightweight 3rd party databases (relational and object-oriented) that run on CLDC 1.x (see some links here and here) and these *should* work on Java ME 8 (but I haven't verified that).
I expect that with the upcoming Java ME 8 release 3rd party developers will start supporting Java ME 8 with database functionality.
Best,
-- Terrence

Could not type cast in java embedding

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
org.xml.sax.InputSource in = (org.xml.sax.InputSource) getVariableData("Invoke_1_getRoutingAndFrameJumpers_OutputVariable","getRoutingAndFrameJumpersResponse");
Document doc = db.parse(in);
In the above code I am trying to type cast the variable getRoutingAndFrameJumpersResponse into org.xml.sax.InputSource so that i can parse.
I am not getting any error during compilation
but I am unable to type cast some run time error is coming in the line were I am type casting but I am not able to see the runtime error.
How can I see the runtime error in java embedding, how to type cast a variable into xml so that I can parse it.

Hi Arun,
Could you try using the bpelx:rename extension in an assign activity enables a BPEL process to rename an element through use of XSD type casting.
<bpel:assign>
<bpelx:rename elementTo="QName1"? typeCastTo="QName2"?>
<bpelx:target variable="ncname" part="ncname"? query="xpath_str" />
</bpelx:rename>
</bpel:assign>
Cheers
A

Problem with socket connection through Java Embedding...

We are trying to create a simple socket connection to a socket server through BPEL PM using the Java Embedding component.
BPEL Process : Client makes an asynchronous request. Passes an input variable. The input variable is sent to the Server Program through a socket connection through the Java embedding component.
Server: We are running a simple Socket Server program from command prompt.
The code below works fine as long as we do not try to receive a response from the server (Commented Code).
If we uncomment the code and try to receive a response, it refuses to create an instance for the BPEL Process. And sometimes restarts the BPEL Server.
Client Code:
String msg="NONE";
try{
org.w3c.dom.Element input = (org.w3c.dom.Element) getVariableData("inputVariable","payload","/client:clientProcessRequest/client:input");
msg = input.getNodeValue();
Socket clientsoc=new Socket("ServerIP",1000);
PrintWriter out1=new PrintWriter(clientsoc.getOutputStream());
out1.write(msg);
out1.flush();
BufferedReader cin1=new BufferedReader(new InputStreamReader(clientsoc.getInputStream()));
msg=cin1.readLine();
setVariableData("outputVariable","payload","/client:result",new String(msg));
clientsoc.close();
catch(UnknownHostException e)
System.err.println("Don't know about host: dev.");
System.exit(1);
catch (IOException e)
System.err.println("Couldn't get I/O for "+ "the connection to: dev.");
System.exit(1);
}

Repost

Using Java Embedding Unzip Code and a Trigger File in a BPEL Process

Hello,
Thanks in advance to anyone that contributes with any insight. It is much appreciated. Having said that I will get to the crux of my problem.
I am currently using Oracle 11g. I have created a SOA composite application that incorporates BPEL and Java. I have the code needed to unzip and extract compressed folders. However, when this was first built out using BPEL it automatically created a web service in the "exposed service" lane and not a file adapter which I believe is needed in order to trigger the process via a start.txt file for example. Based on what I know ... this web service automatically connecting to the BPEL process was simply due to the order of operations, etc. So by creating a 'read' file adapter first and then creating the BPEL process and selecting the template "Define Service Later", it does not automatcially connect the web service to the BPEL process and it will allow me to connect a file adapter to this BPEL process instead ... great. When opening up the BPEL file I then connect a recieve component to this file adapter and configure appropriately.
Essentially, my objective in setting up a trigger to start this unzip process is due to the BPEL process before that outputs or writes the .zip folder to the same directory that I want to poll and/or trigger via a start.txt file. I can get this process to work with a webservice connecting to the BPEL process and by using a Java Embedded in BPEL file, which in turns calls the package/ class that has the java code needed to unzip.
For some reason whenever I try to use a file adapter instead of the native web service that gets created (as mentioned above) it doesn't work. It seems to build or compile just fine however, I am getting errors when I try to deploy.
Note: The Java code contains all the paths where the zip file is to be taken from and extracted to. So because this is in the code I don't need the file adapter to handle this. I just want to use the file adapter so that I can trigger the process via start.txt or something of that nature.
Thanks to anyone that has any suggestions.
Kind Regards,
Kevin
Errors when attempting to deploy are as follows:
[04:12:54 PM] Error deploying archive sca_Job2_UnZip_rev1.0.jar to partition "default" on server soa_server1 [http://WN017A.homedepot.com:8001]
[04:12:54 PM] HTTP error code returned [500]
[04:12:54 PM] Error message from server:
There was an error deploying the composite on soa_server1: Deployment Failed: Error occurred during deployment of component: BPELProcess1 to service engine: implementation.bpel, for composite: Job2_UnZip: ORABPEL-05250
Error deploying BPEL suitcase.
error while attempting to deploy the BPEL component file "H:\Oracle\Middleware\user_projects\domains\Dev_Acorde\servers\soa_server1\dc\soa_d78eb301-314c-422a-a748-bcfe7d0906e8"; the exception reported is: java.lang.RuntimeException: failed to compile execlets of BPELProcess1
This error contained an exception thrown by the underlying deployment module.
Verify the exception trace in the log (with logging level set to debug mode).
[04:12:54 PM] Check server log for more details.
[04:12:54 PM] Error deploying archive sca_Job2_UnZip_rev1.0.jar to partition "default" on server soa_server1 [http://WN017A.homedepot.com:8001]
[04:12:54 PM] #### Deployment incomplete. ####
[04:12:54 PM] Error deploying archive file:/C:/JDeveloper/mywork/Job2_UnZip/Job2_UnZip/deploy/sca_Job2_UnZip_rev1.0.jar
(oracle.tip.tools.ide.fabric.deploy.common.SOARemoteDeployer)

Just wanted to provide a screenshot of the BPEL file as supporting documentation to better illustrate my issue.
Thanks so much,
Kevin

Java Embedding bug in SOA Suite 11g BPEL??

I am beginning to wonder if there is a 'bug' in the SOA Suite 11g, BPEL, Java Embedding activity? Need some help as soon as possible – does the Java Embedding activity work in SOA Suite 11g?
Have tried the following on Jdev 11.1.1.1 and Jdev 11.1.1.3 – get the same error message (see below for error message).
Thanks for any help - Casey
I created a simple composite app by:
1.     Created a Composite with BPEL Process
2.     Created a BPEL variable by the name of Variable and a Simple Type of string      ({http://www.w3.org/2001/XMLSchema}string)
3.     Added an Assign activity (Assign_1) and assigned the value of “Test Var” to the variable Variable using a Copy operation.
4.     Then, after the assign activity, added a Java Embedding activity (Java_Embedding_1) with Java Version set to 1.5 and the following code:
+try{+*
String var;*
var=(String)getVariableData(Variable);*
System.out.println(var);*
+} // end try+
+catch(Exception ex){+*
System.out.println(ex.getMessage());*
+}// end catch+
Compiled and got the following error message:
Error(23,34): Failed to compile bpel generated classes.*
failure to compile the generated BPEL classes for BPEL process "BPELProcess1" of composite "default/Project1!1.0"*
The class path setting is incorrect.*
Ensure that the class path is set correctly. If this happens on the server side, verify that the custom classes or jars which this BPEL process is depending on are deployed correctly. Also verify that the run time is using the same release/version.*
Code for the BPEL component is:
+<?xml version = "1.0" encoding = "UTF-8" ?>+
+
+<process name="BPELProcess1"+
targetNamespace="http://xmlns.oracle.com/TestgetVariable_jws/Project1/BPELProcess1"
xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:client="http://xmlns.oracle.com/TestgetVariable_jws/Project1/BPELProcess1"
xmlns:ora="http://schemas.oracle.com/xpath/extension"
xmlns:bpelx="http://schemas.oracle.com/bpel/extension"
xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:ns1="http://xmlns.oracle.com/pcbpel/adapter/file/TestgetVariable/Project1/FileW"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+
+<partnerLinks>+
+
+<partnerLink name="bpelprocess1_client" partnerLinkType="client:BPELProcess1" myRole="BPELProcess1Provider" partnerRole="BPELProcess1Requester"/>+
+</partnerLinks>+
+
+<variables>+
++
+<variable name="inputVariable" messageType="client:BPELProcess1RequestMessage"/>+
++
+<variable name="outputVariable" messageType="client:BPELProcess1ResponseMessage"/>+
+<variable name="Variable" type="xsd:string"/>+
+</variables>+
+
+<sequence name="main">+
++
+<receive name="receiveInput" partnerLink="bpelprocess1_client" portType="client:BPELProcess1" operation="process" variable="inputVariable" createInstance="yes"/>+
+
+<assign name="Assign_1">+
+<copy>+
+<from expression='"test var"'/>+
+<to variable="Variable"/>+
+</copy>+
+</assign>+
+<bpelx:exec name="Java_Embedding_1" version="1.5" language="java">+
+<![CDATA[/*Write your java code below e.g.+
+     System.out.println("Hello, World");+
+*/+
+try{+
+String var;+
+var=(String)getVariableData(Variable);+
+System.out.println(var);+
+} // end try+
+catch(Exception ex){+
System.out.println(ex.getMessage());
+}// end catch]]>+
+</bpelx:exec>+
+<invoke name="callbackClient" partnerLink="bpelprocess1_client" portType="client:BPELProcess1Callback" operation="processResponse" inputVariable="outputVariable"/>+
+</sequence>+
+</process>+

Java Embedding bug in SOA Suite 11g BPEL??

How to encrypt file on linux using Gnupg command in Java Embedding in BPEL.

Hi All,
I am trying to invoke a command script using the java embedding in BPEL Process.I am using the below code to execute the particular command to encrypt the file :-
try {
        Runtime rt = Runtime.getRuntime();
Process pr = rt.exec(new String[] {"/bin/bash", "-c", "/u01/GnuPG/bin/gpg", "-e", "-r", "Developer","/u01/oracle/ConfigFiles/Adapter_controlDir/abc.csv"});
         int exitVal = pr.waitFor();
        String result = "SUCCESS: Process exit with " + exitVal;
        addAuditTrailEntry("result = "+result);
        setVariableData("outputVariable","payload","/client:processResponse/client:result",result);
} catch(Exception e) {
        e.printStackTrace();
String result = "FAILURE: Exception with " + e.toString();
        addAuditTrailEntry("result = "+result);
        setVariableData("outputVariable","payload","/client:processResponse/client:result",result);
The above statement does nothing. I am not sure what command i need to use to access to the command line.
When i try this particular statement from linux machine command prompt :- /u01/GnuPG/bin/gpg -e -r Developer /u01/oracle/ConfigFiles/Adapter_controlDir/abc.csv
It works absolutely fine and it creates the encrypted files also.
Please suggest , which command i need to use from the java embedding.
Please suggest!!
Regards,
Shah

I think, you can try, writing these commands into a separate shell script and call that shell script from bpel via Java embedding. However, you might not get a return response.. but you can still give a shot.
Hope it helps.

Reading Opaque data from jms queue and decoded in java embedding

Hi ,
Objective:Fetch text message from queue and print it from java embedding in BPEL
I am fetching text message from a jms queue using JMS adapter in BPEL.Then converting the opaque data(Base64 binary)to string using java embedding.My build got successful but I am getting runtime error at the time of deployment.
I have added fabric-runtime.jar file into SCA-INF\lib folder as well as project library directory.
<extensionActivity>
<bpelx:exec name="Java_Embedding1" version="1.5" language="java">
<bpelx:exec import="java.io.*"/>
<bpelx:exec import="oracle.soa.common.util.Base64Decoder"/>
<![CDATA[//Write your java code below e.g.
     System.out.println("Hello, World");
//   String input = ((Element)getVariableData("Receive1_Consume_Message_InputVariable")).getTextContent();
// String inputName = (String)getVariableData("input");
String input = (String)getVariableData("Receive1_Consume_Message_InputVariable");
//Receive1_Consume_Message_InputVariable.opaque
      System.out.println("input:"+input);
      addAuditTrailEntry(input);
      Base64Decoder Decoder = new Base64Decoder();
     try {
      String decoded = Base64Decoder.decode(input);
      setVariableData("Variable_opaque_decoded",decoded);
      addAuditTrailEntry(decoded);
catch(UnsupportedEncodingException uee)
uee.printStackTrace();
}]]>
</bpelx:exec>
</extensionActivity>
Error:
Error deploying archive sca_JMSToDBInsert_rev1.0.jar to partition "default" on server AdminServer [http://localhost:7001]
HTTP error code returned [500]
Error message from server:
There was an error deploying the composite on AdminServer: Error occurred during deployment of component: BPELProcess1 to service engine: implementation.bpel, for composite: JMSToDBInsert: ORABPEL-05250
Error deploying BPEL suitcase.
error while attempting to deploy the BPEL component file "C:\Oracle\Middleware\user_projects\domains\soa_domain\servers\AdminServer\dc\soa_0fb06e23-bac3-4753-aae9-0fc4b54b4dd1"; the exception reported is: java.lang.RuntimeException: failed to compile execlets of BPELProcess1
This error contained an exception thrown by the underlying deployment module.
Verify the exception trace in the log (with logging level set to debug mode).
Check server log for more details.
Error deploying archive sca_JMSToDBInsert_rev1.0.jar to partition "default" on server AdminServer [http://localhost:7001]
#### Deployment incomplete. ####
Error deploying archive file:/C:/SOA Suite/SOA_POC/Client2JMSapps/Client2JMSapps/JMSToDBInsert/deploy/sca_JMSToDBInsert_rev1.0.jar
(oracle.tip.tools.ide.fabric.deploy.common.SOARemoteDeployer)
Could you guys please help me regarding this?
Thanks & Regards,
Souvik
Edited by: Souvik Pal on Apr 16, 2012 9:40 PM

You probably want to try the SOA Suite forum for OSB questions.
SOA Suite
There is an excellent book also:
http://jeffdavies.org/
The documentation goes over the fundamentals, but the book will be better for step by step examples.

Throwing Exception in java embedding to BPEL

Hi,
My requirement is that all exceptions needs to be thrown to BPEL so that the BPEL exception handler can handle it.I am using some classes through BPEL's java embedding. So any exception in them, i wud like to be propagated to BPEL. The Exception is thrown to the java embedding activity but i am not able to throw it to BPEL after that. I have to catch and handle it there itself, else the BPEL gives a compilation error.
Can anybody please gimme a sol for this problem
Thanks
Ashish

Hi,
My requirement is that all exceptions needs to be thrown to BPEL so that the BPEL exception handler can handle it.I am using some classes through BPEL's java embedding. So any exception in them, i wud like to be propagated to BPEL. The Exception is thrown to the java embedding activity but i am not able to throw it to BPEL after that. I have to catch and handle it there itself, else the BPEL gives a compilation error.
Can anybody please gimme a sol for this problem
Thanks
Ashish

Java Embedded Database Recommendation

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