Pass value of htmlb object to controller
Hi ,
I have a set of 5 button on my jsp,
On the click of any button , I want to pass the id of the button to the controlloer somehow.
can somebdy explain how to do please
say the button ids are b1, b2, b3, b4 , b5
on click of b3 , i want the b3 to be passed to a function in controler.
Edited by: namit bhandari on Nov 5, 2008 5:10 PM
Hi Namith,
you add a htmlb button in jsp by using the tag:
<hjb:button>
(See the reference [http://help.sap.com/saphelp_nw04s/helpdata/en/f1/9a0e41a346ef6fe10000000a1550b0/frameset.htm|http://help.sap.com/saphelp_nw04s/helpdata/en/f1/9a0e41a346ef6fe10000000a1550b0/frameset.htm])
One of its attributes is the onSelect tag, which allows you to define the Java function of your controller that needs to be called when a user clicks that button. If you give every button a different method name in the onSelect tag, you will be able to separate the different button clicks !
Kind regards,
Frederic
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> I want to know when I forward from a servlet to a JSP how do I pass
> values especially Java Objects (Sometimes Objects of User written Java
> classes).
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> JSP picks them up, but somehow I have a feeling that this is not the
> right way.
> Suppose my servlet is forwarding to a jsp . What should it do in case an
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> Putting the Exception object in the session is an alternative but I
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> If someone knows a better way od doing it, please help.
>
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xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
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[#|2011-08-22T11:15:11.462+0200|WARNING|glassfish3.1|javax.enterprise.resource.webcontainer.jsf.lifecycle|_ThreadID=95;_ThreadName=Thread-1;|/project.xhtml @32,42 target="#{userController.userId}": Can't set property 'userId' on class 'org.creagora.server.ejb.managed.UserController' to value 'null'.
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at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
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at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:409)
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at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:170)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
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at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
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at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
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at javax.el.BeanELResolver.setValue(BeanELResolver.java:381)
at com.sun.faces.el.DemuxCompositeELResolver._setValue(DemuxCompositeELResolver.java:255)
at com.sun.faces.el.DemuxCompositeELResolver.setValue(DemuxCompositeELResolver.java:281)
at com.sun.el.parser.AstValue.setValue(AstValue.java:197)
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... 35 more
|#]So I wonder : what makes the first example work, that fails in this one ? Where does this 'null' value come from ? I tested every value (project, author, author id), everything is correct. But for some reason, the projectController.project.author.id is not passed to the userController.userId.
If I try to replace
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<f:setPropertyActionListener value="#{projectController.project.id}" target="#{userController.userId}" />I don't get the IllegalArgumentException anymore, but the value is still not passed, and the value of userController.userId is never updated, and remains set to 0.
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Edited by: 880733 on 22 août 2011 04:04Ok, I have a little more time now.
You ask how the value can be null when the property is a long. What is happening is that something in the chain is null, e.g. the author is not set on the project. (Although usually you get an exception with that kind of thing.) The EL resolver is actually not really part of JSF, it is a separate library. Furthermore it is weakly typed so it doesn't know what type of thing projectController.project.author.id is until it evaluates it. If something is null along the way, there is no way for it to know whether the end result should have been a long, a Long, a String or anything else.
You asked how to pass values without setPropertyActionListener. It is certainly possible. In fact, I would not be surprised if my entire application did not use setPropertyActionListener. Let's start with the first case. In that situation you were using a dataTable. The customary thing to do is to bind the dataTable to a UIData property in a managed bean. Then, in your action method, you can invoke UIData.getRowData() and get the object instance associated with the row in the table that was activated by the user.
In your second example it is a little difficult to appreciate everything going on without more context but I'll just guess at what I don't know. I'm going to assume you have a simple page here. On the request that generates this page, projectController.project.author.id is known. I imagine the problem is that this is in request scope, causing projectController.project.author.id to be forgotten on the next request. The simplest solution is to store the project somewhere in session scope. I would recommend against putting the Controller classes themselves in the session scope. Instead create a set of beans for session scope and inject them into the Controller classes.
There are many other ways to skin the same cat. Many people object to over-using session scope. So you could store something small like just the id in the session. Or you could pass the id using h:inputHidden. Or you could use Tomahawk's s:saveState.
HTH -
Passing values from a FORM to another FORM
Hi,
I have to pass values from FORM "A" to FORM "B". What is the best way to do this?\
Can I use a GLOBAL variable?
Thanks,
Marc.I think he meant the global namespace.
You set a :global_your_name_here to a value and that value is available in your entire application. See the help file section on the global namespace for more information.
Forms parameters are parameters that you form picks up from the outside when it starts. The calling entity must supply them in the URL or they will be set to null. You set them up in the object navigator in the Parameters node. -
How can I insert values from table object into a regular table
I have a table named "ITEM", an object "T_ITEM_OBJ", a table object "ITEM_TBL" and a stored procedure as below.
CREATE TABLE ITEM
ITEMID VARCHAR2(10) NOT NULL,
PRODUCTID VARCHAR2(10) NOT NULL,
LISTPRICE NUMBER(10,2),
UNITCOST NUMBER(10,2),
SUPPLIER INTEGER,
STATUS VARCHAR2(2),
ATTR1 VARCHAR2(80),
ATTR2 VARCHAR2(80),
ATTR3 VARCHAR2(80),
ATTR4 VARCHAR2(80),
ATTR5 VARCHAR2(80)
TYPE T_ITEM_OBJ AS OBJECT
ITEMID VARCHAR2(10),
PRODUCTID VARCHAR2(10),
LISTPRICE NUMBER(10,2),
UNITCOST NUMBER(10,2),
SUPPLIER INTEGER,
STATUS VARCHAR2(2),
ATTR1 VARCHAR2(80),
ATTR2 VARCHAR2(80),
ATTR3 VARCHAR2(80),
ATTR4 VARCHAR2(80),
ATTR5 VARCHAR2(80)
TYPE ITEM_TBL AS TABLE OF T_ITEM_OBJ;
PROCEDURE InsertItemByObj(p_item_tbl IN ITEM_TBL, p_Count OUT PLS_INTEGER);
When I pass values from my java code through JDBC to this store procedure, how can I insert values from the "p_item_tbl" table object into ITEM table?
In the stored procedure, I wrote the code as below but it doesn't work at all even I can see values if I use something like p_item_tbl(1).itemid. How can I fix the problem?
INSERT INTO ITEM
ITEMID,
PRODUCTID,
LISTPRICE,
UNITCOST,
STATUS,
SUPPLIER,
ATTR1
) SELECT ITEMID, PRODUCTID, LISTPRICE,
UNITCOST, STATUS, SUPPLIER, ATTR1
FROM TABLE( CAST(p_item_tbl AS ITEM_TBL) ) it
WHERE it.ITEMID != NULL;
COMMIT;
Also, how can I count the number of objects in the table object p_item_tbl? and how can I use whole-loop or for-loop to retrieve values from the table object?
Thanks.Sigh. I answered this in your other How can I convert table object into table record format?.
Please do not open multiple threads. It just confuses people and makes the trreads hard to follow. Also, please remember we are not Oracle employees, we are all volunteers here. We answer questions if we can, when we can. There is no SLA so please be patient.
Thank you for your future co-operation.
Cheers, APC -
How to pass values from main window to pop-up window?
I want to pass a value from the main window (1st form) to pop-up window (2nd form). The first form is of name booking.jsp and 2nd form is of name Fund_booking.jsp. I am using window.showModalDialog to open the window. I think, I have written right code in main window to pass the value but even then I am not able to get it on pop-up window. I am not even able to display an alert on pop-up window saying "hi" by writing a function on save Button in pop-up window. The code is as follows:
On booking.jsp:
<script>
function popup()
var aForm;
aForm = D_requisition_id.options[D_requisition_id.selectedIndex].text;
\\Here I have captured value from a drop down box in my main window form and assigned it to the variable.
alert(aForm);
var myObject =new Object();
myObject.Brandcode = aForm;
alert(myObject.Brandcode);
window.showModalDialog("Fund_booking.jsp",myObject,"dialogHeight:400px;dialogWidth:420px;");
</script>
<button name="B_FundBooking" tabIndex=4 style='POSITION:absolute;LEFT:393;TOP:292;WIDTH:100;height:24;BACKGROUND-COLOR:buttonface' onClick ="popup()">Fund Booking</button>
On Fund_booking.jsp:
<SCRIPT>
var oMyObject = window.dialogArguments;
var sBrandcode = oMyObject.Brandcode;
alert(sBrandcode);
</SCRIPT>
Even the following alert is not getting displayed in pop-up window;
<script>
function ValidateData()
alert("Hi");
</script>
<button name="B_Save" tabIndex=1 style='POSITION:absolute;LEFT:255;TOP:315;WIDTH:75;height:24;BACKGROUND-COLOR:buttonface' onClick ="ValidateData()">Save</button>
I am using DIV instead of frames in my both forms. I just want to get that value in my pop-up window to write a query based on which data will get displayed in my table of pop-up window.
Plz help me to solve this problem.Well, this is actually a JavaScript question, not a Java question but I can give some hints.
When you do pop-up windows you need to put JavaScript in the html of the pop-up itself. Data can be passed by creating new fields in the window object, which the popup can access via the window.openner field.
So, before invoking the popup add any data to be passed to the window object, then the onLoad function in the popup grabs the data. -
Convert String variable value to an Object referece type
Hi all,
I want to know that if there any possible way to convert String variable value to a Object reference type in java. I'll explain by example if this is not clear.
Let's think that there is a string variable name like,
String name="HelloWorld";
and there is a class name same to the variable value.
class HelloWorld
I am passing this string variable value to a method which is going to make a object of helloworld;
new convertobj().convert("HelloWorld");
class convertobj{
public void convert(String name){
// in hert it is going to create the object of HelloWorld;
// HelloWorld hello=new HelloWorld(); just like this.
now i want to do this from the name variable value.( name na=new name()) like wise.
please let me know if there any possible way to do that.
I am just passing the name of class by string variable then i wanted to make a instance of the class which come through the variable value.
thanx.Either cast the object to a HelloWorld or use the reflection API (Google it) - with the reflection API you can discover what methods are available.
Note: if you are planning to pass in various string arguments and instantiate a class which you expect to have a certain method... you should define an interface and have all of your classes that you will call in this way implement the interface (that way you're sure the class has a method of that name). You can then just cast the object to the interface type and call the method.
John -
Situation:
SSIS Package designed in SQL Server 2012 - SQL Server Data Tools
Windows 7 - 64 bit.
The package (32 bit) extracts data from a SQL Server db to an Excel Output file, via an OLE DB connection.
It uses 3 package variables:
*) SQLCommand (String) to specify the SQL Statement to be executed by the package
Property path: \Package.Variables[User::ExcelOutputFile].Properties[Value]
Value: f:\Output Data.xls
*) EXCELOutputFIle (String) to specify path and filename of the Excel output file
Property path: \Package.Variables[User::SQLCommand].Properties[Value]
Value: select * from CartOrder
*) VarObjectDataSet (Object) to hold the data returned by SQL Server)
Property path: \Package.Variables[User::VarObjectDataSet].Properties[Value]
Value: System.Object
It consists out of 2 components:
*) Execute SQL Task: executes the SQL Statement passed on via a package variable. The resultng rows are stored in the package variable VarObjectDataSet
*) Script Task: creates the physical output file and iterates VarObjectDataSet to populate the Excel file.
Outcome and issue:The package runs perfectly fine both in SQL Server Data Tools itself and in DTEXECUI.
However, whenever I run it via SQL Server Agent (with 32 bit runtime option set), it returns the errror message below.
This package contains 3 package variables but the error stating that a package variable can not be set, pops up for the VarObjectDataSet only. This makes me wonder if it is uberhaupt possible to set the value of a package variable
of type Object.
Can anybody help me on this please ?
Message
Executed as user: NT Service\SQLSERVERAGENT. Microsoft (R) SQL Server Execute Package Utility Version 11.0.2100.60 for 32-bit Copyright (C) Microsoft Corporation. All rights reserved. Started: 6:40:20 PM DTExec: Could
not set \Package.Variables[User::VarObjectDataSet].Properties[Value] value to System.Object. Started: 6:40:20 PM Finished: 6:40:21 PM Elapsed: 0.281 seconds. The package execution failed. The step failed.
Thank you very much in advance
JurgenHi Visakh,
thank you for your reply.
So, judging by your reply, not all package variables used inside a package need to be set a value for when run in DTEXEC ?
I already tried that but my package ended up in error (something to do with "... invocation ...." and that error is anything but clearly documented. Judging by the error message itself, it looks like it could be just about anything. that is why I asked my
first question about the object type package variable.
Now, I will remove it from the 'set values' list and try another go cracking the unclear error-message " ... invocation ...". Does an error message about " ... invocation ..." ring any bells, now that we are talking about it here ?
Thx in advance
Jurgen
Yes exactly
You need to set values only forthem which needs to be controlled from outside the package
Any variable which gets its value through expression set inside package or through a query inside execute sql task/script task can be ignored from DTExec
Ok I've seen the invocation error mostly inside script task. This may be because some error inside script written in script task. If it appeared after you removed the variable then it may because some reference of variable existing within script task.
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs
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