Return multiple values from a Web Service

Hi,
I'm learning JAX-WS web services and I'm wondering, how do I return multiple data like, say multiple rows from a table through a web service? I understand that I can use Holders, but those are for JAX-RPC if I'm not mistaken, and I'd like to know the alternative for JAX-WS(if there is any).
Any help would be much appreciated.

Debojit Sinha wrote:
A greeting service where the client types a string(preferably a name), and the service returns "Hello, " followed by that name. I faced the error with returning objects when I tried to return the results of a query with a set of serialized JavaBeans passed into an arraylist. I don't have the complete error log with me now, but the error was generated when deploying with JDeveloper 11g, and it was something about JAXB content model error. Also, There was an error regarding javax.naming.Name saying that JAXB couldn't handle interfaces.yes, you can't return any interfaces. so, instead of returning a List, you have to return an ArrayList. if you use xjc to generate types from a schema, then it will normally generate a "wrapper" class around any collections (which will in turn hold a List).

Similar Messages

Return multiple values from a web method??

Hi,
I am wondering if it's possible for a web method to return multiple values to a client. I know each web method can return only one value of a given data type. I am looking for something like ref or out keyword in C#. If it's not available, is there any workaround? Thanks.
Regards

Java web service endpoints can return multiple values by using the javax.xml.rpc.holders classes. The following post might help:
http://forum.java.sun.com/thread.jspa?threadID=684916
If you'll be returning lots of values, it might be worth considering a document-style implementation rather than RPC-style.

How to return multiple values from dialog popup

hi all
I'm using ADF 10g. I have a requirement that I have to return multiple values from a dialog.
I have a page containing a table with a button which calls the dialog. The dialog contains a multi-select table where i want to select multiple records and add them to the table in the calling page.
In the backing bean of the calling page, I have the returnListener method.
I am thinking that I have to store the selected rows from dialog in an array and return that array to the returnListener...but I don't know how to go about it with the code.
Can someone help me out with it?
thanks

Hi Frank,
I'm trying to implement your suggestion but getting comfused.
AdfFacesContext.getCurrentInstance().returnFromDialog(null, hashMap) is called in ActionListener method, from what I understood.
ReturnListener method already calls it, so no need to call explicitly.
Okay here's what i'm doing.
command button launches the dialog on the calling page.
In the dialog page, there is a button "select", which when i click, closes the dialog and returns to calling page. I put a af:returnActionListener on this button, which logically should have a corresponding ReturnListener() in the calling page backing bean.
Now I have 3 questions:
1. do i have to use ActionListener or ReturnListener?
2. where do I create the hashMap? Is it in the backing bean of the dialog or in the one of calling page?
3. how do I retrieve the keys n values from hashmap?
please help! thanks
This is found in the backing bean of calling page:
package mu.gcc.dms.view.bean.backing;
import com.sun.java.util.collections.ArrayList;
import com.sun.java.util.collections.HashMap;
import com.sun.java.util.collections.List;
import java.io.IOException;
import java.util.Map;
import javax.faces.application.Application;
import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.faces.event.ActionEvent;
import mu.gcc.dms.model.services.DMSServiceImpl;
import mu.gcc.dms.model.views.SiteCompaniesImpl;
import mu.gcc.dms.model.views.SiteCompaniesRowImpl;
import mu.gcc.dms.model.views.lookup.LkpGlobalCompaniesImpl;
import mu.gcc.util.ADFUtils;
import mu.gcc.util.JSFUtils;
import oracle.adf.model.BindingContext;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCIteratorBinding;
import oracle.adf.view.faces.context.AdfFacesContext;
import oracle.adf.view.faces.event.ReturnEvent;
import oracle.adf.view.faces.model.RowKeySet;
import oracle.binding.AttributeBinding;
import oracle.binding.BindingContainer;
import oracle.binding.OperationBinding;
import oracle.jbo.AttributeDef;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.RowIterator;
import oracle.jbo.RowSetIterator;
import oracle.jbo.domain.Number;
import oracle.jbo.server.java.util.Iterator;
public class CompanyList {
private BindingContainer bindings;
private Map hashMap;
DMSServiceImpl service =(DMSServiceImpl)ADFUtils.getDataControlApplicationModule("DMSServiceDataControl");
SiteCompaniesImpl siteCompanyList = service.getSiteCompanies();
LkpGlobalCompaniesImpl globalCompanyList = service.getLkpGlobalCompanies();
public CompanyList() {
public BindingContainer getBindings() {
return this.bindings;
public void setBindings(BindingContainer bindings) {
this.bindings = bindings;
*public void setHashMap(Map hashMap) {*
*// hashMap = (Map)new HashMap();*
this.hashMap = hashMap;
*public Map getHashMap() {*
return hashMap;
public String searchCompanyButton_action() {
BindingContainer bindings = getBindings();
OperationBinding operationBinding =
bindings.getOperationBinding("Execute");
Object result = operationBinding.execute();
if (!operationBinding.getErrors().isEmpty()) {
return null;
return null;
*public void addCompanyActionListener(ActionEvent actionEvent){*
AdfFacesContext.getCurrentInstance().returnFromDialog(null, hashMap);
public void addCompanyReturnListener(ReturnEvent returnEvent){
//how to get hashmap from here??
public String addCompanyButton_action() {
return "dialog:globalLovCompanies";
}

[UIX] How To: Return multiple values from a LOV

Hi gang
I've been receiving a number of queries via email on how to return multiple items from a LOV using UIX thanks to earlier posts of mine on OTN. I'm unfortunately aware my previous posts on this are not that clear thanks to the nature of the forums Q&A type approach. So I thought I'd write one clear post, and then direct any queries to it from now on to save me time.
Following is my solution to this problem. Please note it's just one method of many in skinning a cat. It's my understanding via chatting to Oracle employees that LOVs are to be changed in a future release of JDeveloper to be more like Oracle Forms LOVs, so my skinning skills may be rather bloody & crude very soon (already?).
I'll base my example on the hr schema supplied with the standard RDBMS install.
Say we have an UIX input-form screen to modify an employees record. The employees record has a department_id field and a fk to the departments table. Our requirement is to build a LOV for the department_id field such that we can link the employees record to any department_id in the database. In turn we want the department_name shown on the employees input form, so this must be returned via the LOV too.
To meet this requirement follow these steps:
1) In your ADF BC model project, create 2 EOs for employees and departments.
2) Also in your model, create 2 VOs for the same EOs.
3) Open your employees VO and create a new attribute DepartmentName. Check selected in query. In expressions type (SELECT dept.department_name FROM departments dept WHERE dept.department_id = employees.department_id). Check Updateable always.
4) Create a new empty UIX page in your ViewController project called editEmployees.uix.
5) From the data control palette, drag and drop EmployeesView1 as an input-form. Notice that the new field DepartmentName is also included in the input-form.
6) As the DepartmentName will be populated either from querying existing employees records, or via the LOV, disable the field as the user should not have the ability to edit it.
7) Select the DepartmentId field and delete it. In the UI Model window delete the DepartmentId binding.
8) From the data controls palette, drag and drop the DepartmentId field as a messageLovInput onto your page. Note in your application navigator a new UIX page lovWindow0.uix (or similar) has been created for you.
9) While the lovWindow0.uix is still in italics (before you save it), rename the file to departmentsLov.uix.
10) Back in your editEmployees.uix page, your messageLovInput source will look like the following:
<messageLovInput
    model="${bindings.DepartmentId}"
    id="${bindings.DepartmentId.path}"
    destination="lovWindow0.uix"/>Change it to be:
<messageLovInput
    model="${bindings.DepartmentId}"
    id="DepartmentId"
    destination="departmentsLov.uix"
    partialRenderMode="multiple"
    partialTargets="_uixState DepartmentName"/>11) Also change your DepartmentName source to look like the following:
<messageTextInput
    id=DepartmentName
    model="${bindings.DepartmentName}"
    columns="10"
    disabled="true"/>12) Open your departmentsLov.uix page.
13) In the data control palette, drag and drop the DepartmentId field of the DepartmentView1 as a LovTable into the Results area on your page.
14) Notice in the UI Model window that the 3 binding controls have been created for you, an iterator, a range and a binding for DepartmentId.
15) Right click on the DepartmentsLovUIModel node in the UI Model window, then create binding, display, and finally attribute. The attribute binding editor will pop up. In the select-an-iterator drop down select the DepartmentsView1Iterator. Now select DepartmentName in the attribute list and then the ok button.
16) Note in the UI Model you now have a new binding called DCDefaultControl. Select this, and in the property palette change the Id to DepartmentName.
17) View the LOV pages source, and change the lovUpdate event as follows:
<event name="lovSelect">
    <compound>
        <set value="${bindings.DepartmentId.inputValue}" target="${sessionScope}" property="MyAppDepartmentId" />
        <set value="${bindings.DepartmentName.inputValue}" target="${sessionScope}" property="MyAppDepartmentName" />
    </compound>
</event>18) Return to editEmployees.uix source, and modify the lovUpdate event to look as follows:
<event name="lovUpdate">
    <compound>
        <set value="${sessionScope.MyAppDepartmentId}" target="${bindings.DepartmentId}" property="inputValue"/>
        <set value="${sessionScope.MyAppDepartmentName}" target="${bindings.DepartmentName}" property="inputValue"/>
    </compound>
</event>Thats it. Now when you select a value in your LOV, it will return 2 (multiple!) values.
A couple things to note:
1) In the messageLovInput id field we dont use the .path notation. This is mechanism for returning 1 value from the LOV and is useless for us.
2) Again in the messageLovInput we supply _uixState as an entry in the partialTargets.
3) We are relying on partial-page-refresh functionality to update multiple items on the screen.
Im not going to take the time out to explain these 3 points, but its worthwhile you learning more about them, especially the last 2, as a separate exercise.
One other useful thing to do is, in your messageLovInput, include as a last entry in the partialTargets list MessageBox. In turn locate the messageBox control on your page (if any), and supply an id=MessageBox. This will allow the LOV to place any errors raised in the MessageBox and show them to the user.
I hope this works for you :)
Cheers,
CM.

Thanks Chris,
It took me some time to find the information I needed, how to use return multiple values from a LOV popup window, then I found your post and all problems were solved. Its working perfectly, well, almost perfectly.
Im always fighting with ADF-UIX, it never does the thing that I expect it to do, I guess its because I have a hard time letting go of the total control you have as a developer and let the framework take care of a few things.
Anyway, I'm using your example to fill 5 fields at once, one of the fields being a messageChoice (a list with countries) with a LOV to a lookup table (id , country).
I return the countryId from the popup LOV window, that works great, but it doesn't set the correct value in my messageChoice . I think its because its using the CountryId for the listbox index.
So how can I select the correct value inside my messageChoice? Come to think of it, I dont realy think its LOV related...
Can someone help me out out here?
Kind regards
Ido

Null Values From MS Web Services Toolkit Client

Hi,
I've been bashing my head against a wall on this one for too long now.
I've got a JAX-WS web service deployed to Glassfish v2 b33 which works fine when called by a Java client. It also works fine when methods with no parameters are called from the MS client, i.e. simple and complex types are returned as they should be. However the problem I am having is that when the web service methods that take parameters are called from the MS client, the values received by the service are always null. I've montitored the service and values are being sent in the soap request, but a simple System.out.println statement in the first line of the method indicates a null value. I've captured a request from the Java client and the MS client to show the difference:
A java request:
<soapenv:Envelope
     xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <soapenv:Header/>
    <soapenv:Body>
     <ns0:getConfig xmlns:ns0="http://ws.firestorm.alternativenetworks.com/">
             <arg0>Inbound</arg0>
     </ns0:getConfig>
    </soapenv:Body>
</soapenv:Envelope>and a request from the web services toolkit:
<SOAP-ENV:Envelope
     xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
     xmlns:SOAPSDK1="http://www.w3.org/2001/XMLSchema"
     xmlns:SOAPSDK2="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:SOAPSDK3="http://schemas.xmlsoap.org/soap/encoding/">
     <SOAP-ENV:Header/>
     <SOAP-ENV:Body>
           <SOAPSDK4:getConfig xmlns:SOAPSDK4="http://ws.firestorm.alternativenetworks.com/">
          <SOAPSDK4:arg0>Inbound</SOAPSDK4:arg0>
     </SOAPSDK4:getConfig>
     </SOAP-ENV:Body>
</SOAP-ENV:Envelope>I've tried everything I can think of, including changing the style from RPC/LITERAL to DOCUMENT/LITERAL, but the Java web service just seem to like the way the SOAP message is wrapped up.
Any help on this would be greatly appreciated.
Cheers
Tony

Thanks Milan, your suggestion put me on the right track, however I've hit another snag.
I decided the best way to solve the problem was to use the Glassfish Transformation Rules feature to take the SOAP request and transform it to a valid format before reaching the code. The XSLT file I created looks like this (I'm no XSLT guru so this will definitely need some tidying up, but for now it works): <?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
     xmlns:SOAPSDK1="http://www.w3.org/2001/XMLSchema"
     xmlns:SOAPSDK2="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:SOAPSDK3="http://schemas.xmlsoap.org/soap/encoding/">
     <xsl:output method="xml" indent="yes"/>
     <xsl:template match="*">
          <xsl:copy><xsl:copy-of select="@*"/><xsl:apply-templates/></xsl:copy>
     </xsl:template>
     <xsl:template match="/SOAP-ENV:Envelope/SOAP-ENV:Body/*">
          <xsl:copy>
               <xsl:copy-of select="@*"/>
               <xsl:for-each select="*">
                    <xsl:text disable-output-escaping="yes"><arg</xsl:text>
                    <xsl:value-of select="position() - 1"/>
                    <xsl:text disable-output-escaping="yes">></xsl:text>
                    <xsl:value-of select="."/>
                    <xsl:text disable-output-escaping="yes"></arg</xsl:text>
                    <xsl:value-of select="position() - 1"/>
                    <xsl:text disable-output-escaping="yes">></xsl:text>
               </xsl:for-each>
          </xsl:copy>
     </xsl:template>
</xsl:stylesheet> which transforms the problem SOAP request: <SOAP-ENV:Envelope
     xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
     xmlns:SOAPSDK1="http://www.w3.org/2001/XMLSchema"
     xmlns:SOAPSDK2="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:SOAPSDK3="http://schemas.xmlsoap.org/soap/encoding/">
     <SOAP-ENV:Header/>
     <SOAP-ENV:Body>
           <SOAPSDK4:getConfig xmlns:SOAPSDK4="http://ws.firestorm.alternativenetworks.com/">
          <SOAPSDK4:arg0>Inbound</SOAPSDK4:arg0>
     </SOAPSDK4:getConfig>
     </SOAP-ENV:Body>
</SOAP-ENV:Envelope> to the following valid format: <?xml version="1.0" encoding="utf-8"?>
<SOAP-ENV:Envelope
     xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
     xmlns:SOAPSDK1="http://www.w3.org/2001/XMLSchema"
     xmlns:SOAPSDK2="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:SOAPSDK3="http://schemas.xmlsoap.org/soap/encoding/">
   <SOAP-ENV:Header/>
   <SOAP-ENV:Body>
      <SOAPSDK4:getConfig xmlns:SOAPSDK4="http://ws.firestorm.alternativenetworks.com/">
     <arg0>Inbound</arg0>
      </SOAPSDK4:getConfig>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope> But when I load the .xsl file using the Transformation Rules page and call the web service using the Microsoft Web Services Toolkit, I'm getting the following exception: [#|2007-05-11T09:23:46.530+0100|INFO|sun-appserver9.1|javax.enterprise.system.tools.admin|_ThreadID=15;_ThreadName=Thread-15;com.sun.enterprise.admin.event.wsmgmt.TransformationRuleEvent -- server [1 Change(s), Id:1, ts:1178871826530];|ADM1041:Sent the event to instance:[com.sun.enterprise.admin.event.wsmgmt.TransformationRuleEvent -- server [1 Change(s), Id:1, ts:1178871826530]]|#]
[#|2007-05-11T09:27:31.675+0100|INFO|sun-appserver9.1|javax.enterprise.system.tools.admin|_ThreadID=12;_ThreadName=httpWorkerThread-4848-0;com.sun.enterprise.admin.event.wsmgmt.TransformationRuleEvent -- server [1 Change(s), Id:2, ts:1178872051675];|ADM1041:Sent the event to instance:[com.sun.enterprise.admin.event.wsmgmt.TransformationRuleEvent -- server [1 Change(s), Id:2, ts:1178872051675]]|#]
[#|2007-05-11T09:28:00.269+0100|WARNING|sun-appserver9.1|javax.enterprise.system.stream.err|_ThreadID=13;_ThreadName=httpSSLWorkerThread-8080-0;_RequestID=89eadb09-2894-4ace-95f6-75043c1e6988;|
ERROR: ''|#]
[#|2007-05-11T09:28:00.285+0100|WARNING|sun-appserver9.1|javax.enterprise.system.stream.err|_ThreadID=13;_ThreadName=httpSSLWorkerThread-8080-0;_RequestID=89eadb09-2894-4ace-95f6-75043c1e6988;|
com.sun.enterprise.admin.wsmgmt.transform.TransformException: javax.xml.transform.TransformerException: java.lang.NullPointerException
     at com.sun.enterprise.admin.wsmgmt.transform.FilterChain.process(FilterChain.java:238)
     at com.sun.enterprise.admin.wsmgmt.transform.TransformFilter.process(TransformFilter.java:144)
     at com.sun.enterprise.admin.wsmgmt.filter.spi.FilterRouter.applyFilters(FilterRouter.java:69)
     at com.sun.enterprise.admin.wsmgmt.agent.GlobalMessageListenerImpl.processRequest(GlobalMessageListenerImpl.java:181)
     at com.sun.enterprise.webservice.monitoring.WebServiceEngineImpl.processRequest(WebServiceEngineImpl.java:265)
     at com.sun.enterprise.webservice.monitoring.JAXWSEndpointImpl.processRequest(JAXWSEndpointImpl.java:53)
     at com.sun.enterprise.webservice.MonitoringPipe.process(MonitoringPipe.java:127)
     at com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest(PipeAdapter.java:79)
     at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:559)
     at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:518)
     at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:503)
     at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:400)
     at com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl.process(AbstractTubeImpl.java:70)
     at com.sun.xml.ws.mex.server.MetadataServerPipe.process(MetadataServerPipe.java:97)
     at com.sun.enterprise.webservice.CommonServerSecurityPipe.processRequest(CommonServerSecurityPipe.java:191)
     at com.sun.enterprise.webservice.CommonServerSecurityPipe.process(CommonServerSecurityPipe.java:113)
     at com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest(PipeAdapter.java:79)
     at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:559)
     at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:518)
     at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:503)
     at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:400)
     at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:208)
     at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:374)
     at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:175)
     at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:134)
     at com.sun.enterprise.webservice.Ejb3MessageDispatcher.handlePost(Ejb3MessageDispatcher.java:100)
     at com.sun.enterprise.webservice.Ejb3MessageDispatcher.invoke(Ejb3MessageDispatcher.java:74)
     at com.sun.enterprise.webservice.EjbWebServiceServlet.dispatchToEjbEndpoint(EjbWebServiceServlet.java:187)
     at com.sun.enterprise.webservice.EjbWebServiceServlet.service(EjbWebServiceServlet.java:116)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at com.sun.enterprise.web.AdHocContextValve.invoke(AdHocContextValve.java:101)
     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:611)
     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:558)
     at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:74)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:207)
     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:611)
     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:558)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1067)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:611)
     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:558)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1067)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:249)
     at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:618)
     at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:549)
     at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:790)
     at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:326)
     at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:248)
     at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:199)
     at com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(PortUnificationPipeline.java:328)
     at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
     at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:93)
Caused by: javax.xml.transform.TransformerException: java.lang.NullPointerException
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:651)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:281)
     at com.sun.enterprise.admin.wsmgmt.transform.FilterChain.process(FilterChain.java:224)
     ... 54 more
Caused by: java.lang.NullPointerException
     at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1235)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter.parse(TrAXFilter.java:105)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:588)
     at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:642)
     ... 56 moreCould this be a bug or am I doing something wrong?
Cheers again,
Tony

Some data is missing while returning complex datatype from a web service

Hi
I am returning a complex data type from a web service. complex data type has a super class and some(not all) values from this super class are not being returned to the client. Strange part is that it giving some fields from super class and some values are not returned.
I saw the soap response also it does not show any tag for those fields. but while creating a response i am setting some string values to those fields but i am not getting at client side.
all the serailiastion and deseialization classes where created using ANT tasks and i have checked that all the cedec classes have been created.

for what it's worth, the same problem was reported by one of our developers, although the string size was considerably smaller (probably less then 1 MB). According to him, soap clients generated from apache tools could connect fine and process the XML records. JDev hung. We simply changed our use case to return smaller results sets, but perhaps you could also generate your clients with WSDL2Java rather then JDev (if it is a truly a bug in JDev SOAP)? Can you add record parameters to the payload, in order to limit the results and scroll between remaining rows?

Returning multiple values from a table

Hi there i am working on a bit of sql which will return values when they exist in a table.
The code I have returns the correct value when there is only one entry in the tbl_studentmodules table, as soon as there is more than one entry in this table it displays no rows at all :(.
Can anyone point out how I go about returning multiple values?
             select modulename from tbl_modulefeedback
where 1 = (select count(*) from tbl_studentmodules
       where upper(:APP_USER) = upper(student_id))
and 1 = (select count(*) from tbl_modulefeedback, tbl_studentmodules
      where tbl_modulefeedback.modulecode = tbl_studentmodules.modulecode)Thanks in advance!
Ashleigh

I'm not quite sure I understand what you are looking for, but I think a simple join may be what you need. something like:
select modulename
from tbl_modulefeedback mfb
   join tbl_studentmodules sm
      on mfb.modulecode = sm.modulecode
where upper(sm.student_id) = upper(:APP_USER)This will return the module name for all modules that the given student has provided feeedback for. If there is a possibility that a student/module combination could appear in tbl_studentmodules more than once, something like this might be better to show the modulename only once.
select modulename
from tbl_modulefeedback mfb
where mfb.modulecode in (select sm.modulecode
                         from tbl_studentmodules sm
                         where mfb.modulecode = sm.modulecode and
                               upper(sm.student_id) = upper(:APP_USER))If this is not what you want, then post some sample data (preferrable in the form of insert statements or a with clause) and the results you expect rom that sample data.
John

Return multiple values from a function to a SELECT statement

I hope I've provided enough information here. If not, just let me know what I'm missing.
I am creating a view that will combine information from a few tables. Most of it is fairly straightforward, but there are a couple of columns in the view that I need to get by running a function within a package. Even this is fairly straightforward (I have a function named action_date in a package called rp, for instance, which I can use to return the date I need via SELECT rp.action_date(sequence_number).
Here's the issue: I actually need to return several bits of information from the same record (not just action_date, but also action_office, action_value, etc.) - a join of the tables won't work here as I'll explain below. I can, of course, run a separate function for each statement but that is obviously inefficient. Within the confines of the view select statement however, I'm not sure how to return each of the values I need.
For instance, right now, I have:
Table1:
sequence_number NUMBER(10),
name VARCHAR(30),
Table2:
Table1_seq NUMBER(10),
action_seq NUMBER(10),
action_date DATE,
action_office VARCHAR(3),
action_value VARCHAR(60),
I can't simply join Table1 and Table2 because I have to do some processing in order to determine which of the matching returned rows I actually need to select. So the package opens a cursor and processes each row until it finds the one that I need.
The following works but is inefficient since all of the calls to the package will return columns from the same record. I just don't know how to return all the values I need into the SELECT statement.
CREATE VIEW all_this_stuff AS
SELECT sequence_number, name,
rp.action_date(sequence_number) action_date,
rp.action_office(sequence_number) action_office,
rp.action_value(sequence_number) action_value
FROM table1
Is there a way to return multiple values into my SELECT statement or am I going about this all wrong?
Any suggestions?
Thanks so much!

Hi,
What you want is a Top-N Query , which you can do using the analytic ROW_NUMBER function in a sub-query, like this:
WITH     got_rnum     AS
     SELECT     action_seq, action_dt, action_office, action_type, action_value
     ,     ROW_NUMBER () OVER ( ORDER BY action_date
                               ,            action_seq
                         ,            action_serial
                       ) AS rnum
     FROM     table2
     WHERE     action_code     = 'AB'
     AND     action_office     LIKE 'E'     -- Is this right?
SELECT     action_seq, action_dt, action_office, action_type, action_value
FROM     got_rnum
WHERE     rnum     = 1
;As written, this will return (at most) one row.
I suspect you'll really want to get one row for each group , where a group is defined by some value in a table to which you're joining.
In that case, add a PARTITION BY clause to the ROW_NUMBER function.
If you'd post a little sample data (CREATE TABLE and INSERT statements), I could show you exactly how.
Since I don't have your tables, I'll show you using tables in the scott schema.
Here's a view that has data from the scott.dept table and also from scott.emp, but only for the most senior employee in each department (that is, the employee with the earliest hiredate). If there happens to be a tie for the earliest hiredate, then the contender with the lowest empno is chosen.
CREATE OR REPLACE VIEW     senior_emp
AS
WITH     got_rnum     AS
     SELECT     d.deptno
     ,     d.dname
     ,     e.empno
     ,     e.ename
     ,     e.hiredate
     ,     ROW_NUMBER () OVER ( PARTITION BY d.deptno
                               ORDER BY         e.hiredate
                         ,                e.empno
                       ) AS rnum
     FROM     scott.dept     d
     JOIN     scott.emp     e     ON     d.deptno     = e.deptno
SELECT     deptno
,     dname
,     empno
,     ename
,     hiredate
FROM     got_rnum
WHERE     rnum     = 1
SELECT     *
FROM     senior_emp
;Output:
.    DEPTNO DNAME               EMPNO ENAME      HIREDATE
        10 ACCOUNTING           7782 CLARK      09-JUN-81
        20 RESEARCH             7369 SMITH      17-DEC-80
        30 SALES                7499 ALLEN      20-FEB-81
By the way, one of the conditions in the query you posted was
action_office     LIKE 'E'which is equivalent to
action_office     = 'E'(LIKE is always equivalent to = if the string after LIKE doesn't contain any wildcards.)
Did you mean to say that, or did you mean something like this:
action_office     LIKE 'E%'instead?

Return multiple values from dynamic lov in apex 3.2.1

Hi
I need to create a dynamic lov that displays multiple values from a table and RETURNS multiple values into display only fields in a form page to be saved to the database
For example
dynamic list of value name SERVER
select name || ',' || life_cycle d, name r
from sserver
order by 1
This SERVER LOV is attached to the P4_SSERVER_NAME field in the form.
However this only returns sserver. name into the P4_SSERVER_NAME field in the form. I would need to capture the life_cycle field as well and populate the P4_LIFE_CYCLE field in the form as well. How does one do this?
I have searched this forum however could not find a thread that fit my situation. i saw that in 4.2 there is dynamic action however unable to upgrade at this moment.
any suggestions are greatly appreciated.
thank you

Hi CRL,
One method is to set the value of your P4_LIFE_CYCLE item via APEX_UTIL.set_session_state
To do this you need to create a Page Process
Type PL/SQL anonymous block
Process Point On Load - Before Header
The source for the Process might look like this: DECLARE
   l_life_cycle   VARCHAR2 (50);
BEGIN
   SELECT life_cycle
     INTO l_life_cycle
     FROM sserver
    WHERE :p4_sserver_name = sserver.name;
   APEX_UTIL.set_session_state ('P4_LIFE_CYCLE', l_life_cycle);
END;Jeff

Return multiple values from a method

For a school project I have to make a parameter-less constructor that can input values from the keyboard and calculate those values. Now that I have the values how do I return them? I need to return 3 values from this parameter-less method.
I hoope someone can help.

Qwertyfshag wrote:
Here is the wording of the assignment. I have copied and pasted it word for word:
"Declare and use a no-argument (or "parameter-less") constructor to input the data needed, and to do the calculations."
Any advice???Find a teacher who isn't an idiot. That sentence is vague ("to input the data needed"? Does that mean that it's supposed to query the user (which is terrible) or that it's supposed to encapsulate the data as hardcoded values, or what?) and is a bad design. Constructors shouldn't do this sort of thing.
Ok I have done that part and now I want to retrieve the values of the calculations. How can I get those values out of that method What do you mean "that method"? Constructors aren't methods, and they don't return values.
I suppose you could define a class whose constructor queries the user, and which would have a method to return values. That could be pretty simple; the method signature would be like this:
Set<Integer> getValues();
This seems like an advanced problem.It's not advanced; it's just garbage.
I can't post the code in hear because that may constitute cheating. I am allowed to discuss it verbally but I cannot share code, sorry.You can't get a lot of help then. We can't psychically see what you've done so far.
In conclusion: I have to have two methods. One method is a constructorConstructors aren't methods. If your teacher told you that they are, then he/she doesn't know what he/she is doing.
that has NO parameters that will get input from the keyboard (done) and do the calculations (done). The other method must print that values to the screen on separate lines (not done). I don't know how to get the values out of the method.If they're two methods in the same class, then the constructor just needs to store the user input into a field of the class, and the other method can read the values in that field.

Problem in fetching values from Java Web Service returning ArrayList

Hi all,
I am calling an External Java web Service from BPEL. That Java Web Service is returning an Arraylist.
I am not able to assign the values returned by the Java web service to local String Variables of BPEL.
Kindly help me...

Hi,
My problem has been resolved..
I have used
bpws:getVariableData('Invoke_1_useSSH_OutputVariable','parameters',concat('/ns7:useSSHResponseElement/ns7:result/ns8:item\[',bpws:getVariableData('count'),']'))
where count is the local int variable which contains the index value of the arraylist i.e. which index element we want to retrieve from arraylist.
Thanks....
Edited by: user643533 on Sep 12, 2008 12:10 AM

Return multiple values from a search help

Dear All,
I have a table control on screen with fields:
doc.no
doc.type
doc.ver
doc.part
I've coded a search help for doc. no. which returns a single value i.e. doc. no from the search help.
But my reqmt. is that when the user selects a particular doc.no from search help, it should also return doc. type/ver/part
and the corresponding table control field should be populated.
I mean i require multiple values to be returned and populated in my screen.
Thanks in anticipation

Hi ,
Please check this thread where i had done some coding and the OP himself has found the solution
automatic population of search help value to another field in module pool ... if its a table control you have get the selected line by using fm DYNP_GET_STEPL. Then update the values to the respective fields using DYNP_VALUES_UPDATE.

Returning multiple values from a called tabular form(performance issue)

I hope someone can help with this.
I have a form that calls another form to display a multiple column tabular list of values(needs to allow for user sorting so could not use a LOV).
The user selects one or more records from the list by using check boxes. In order to detect the records selected I loop through the block looking for boxes checked off and return those records to the calling form via a PL/SQL table.
The form displaying the tabular list loads quickly(about 5000 records in the base table). However when I select one or more values from the table and return back to the calling form, it takes a while(about 3-4 minutes) to return to the called form with the selected values.
I guess it is going through the block(all 5000 records) looking for boxes checked off and that is what is causing the noticeable pause.
Is this normal given the data volumes I have or are there any other perhaps better techniques or tricks I could use to improve performance. I am using Forms6i.
Sorry for being so long-winded and thanks in advance for any help.

Try writing to your PL/SQL table when the user selects (or remove when deselect) by usuing a when-checkbox-changed trigger. This will eliminate the need for you top loop through a block with 5000 records and should improve your performance.
I am not aware of any performance issues with PL/SQL tables in forms, but if you still have slow performance try using a shared record-group instead. I have used these in the past for exactly the same thing and had no performance problems.
Hope this helps,
Candace Stover
Forms Product Management

Returning multiple values from a function

Hello everyone,
I am pretty new to actionscript and flex and one thing i am not entirly sure it is done is how to get the value in actionscript when returning multple values.
for example i have the following function:
public function sayhello():string
     var hello:String="hello World";
     return hello
var myvalue:String=sayhello();
trace(myvalue);
How do go about getting the values of two returns:
public function sayhello():string
     var strhello:String="hello";
      var strWorld:String="World";
     return strhello,strWorld;
var myvalue1:String=?????
var myvalue2:String=???

To solve this problem you must use a object for storing complex return value.
You can do it using inline anonymous object:
public function sayhello():Object
     return {strHello: "hello";strWorld: "World"}
and accesing result as:
var obj:Object = sayhello();
var strHello:String = obj.strHello;
You may also create a custom class
class HelloWorldResult{
     public var strHello:String;
     public var strWorld:String;
and return a new instance of this class from your method:
public function sayhello():HelloWorldResult
     var hwr:HelloWorldResult = new HelloWorldResult();
     hwr.strHello = "Hello";
     hwr.strWorld = "World";
     return hwr;

Returning multiple values from a method

I have to return a string and int array from a method (both are only of size 5 for a total of 10) What would be considered the best manner in which to do this ?
Dr there's 10 points in it for you or whoever gives me the best idea ;-P

hey here it is easy that you can return many things
what ever you want from a single method man....
you know the main thing what you have to do is.....
Just create a VECTOR or LIST object, then add all the
values what ever you want to return like string and
int array like etc...
Then make the method return type is VECTOR and after
getting the Vector you can Iterate that and you can
get all the values from that method what ever you
want....
jus try this,,,,,,,,,,
Its really work......
reply me..but it relies purely on trust that the returned collection would contain exactly the right number and type of arguments

Return multiple values from a Web Service

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