BC4J and JSP
I have a question about jsp using bc4j. I need to create some view object row methods and let jsp to use it. Do I have to use struts? We could not use view object row methods from jbo, right? We have to create some javabean classes, right?
Thanks!!
You can call your methods from a JSP or a Struts action. I recommend using Struts. If need to use a JSP, you can gain access to your view object via the variable introduced by the data source tag. Here is some pseudo-code:
<jbo:DataSource id="ds" .../>
<%
MyViewObjType view = (MyViewObjType )ds.getDataSource().getRowSet();
%>
Similar Messages
-
Adf-Struts/JSP/BC4J- and setting date fields from jsp
Hi,
I'm working with the new ADF Frameworks (JDev 9.0.5.1) and ran into some questions regarding exception handling using BC4J, Struts and JSPs.
I have a DATE column in database and an entity and VO with a datefield with type oracle.jbo.domain.Date.
My JSP shows a textfield and the user should enter a valid date. Everything fine, until date is of wrong format or contains illegal characters...
Problem:
ADF tries to do a setAttribute on the datefield in VO row which expects a parameter with type oracle.jbo.domain.Date. When the user entered e.g. "NiceWeather" as date, I get an IIlegalArgumentException while converting to the correct Date format. This exception isn't thrown by bc4j as AttrValException and therefore my JSP renders a global error instead of a message directly behind the date field.
I tried to validate the datefield in my DataForm and in my Action in the validateModelUpdates() method, but with no fitting solution.
Any ideas how to validate a datefield with adf/struts/jsp/bc4j?
Thanks for your help!
Torsten.Torsen - In the first instance I'd recommed that you try and handle it declaritively using the Struts Validator Framework . See http://otn.oracle.com/products/jdev/howtos/10g/StrutsValidator/struts_validator_howto.html
There is a section in there on how to use the validator with ADF databound pages and you can check the format the user enters via generated JavaScript.
Also check out the matching sample project:
http://otn.oracle.com/sample_code/products/jdev/10g/ADFandStrutsValidator.zip - this has a data field check on it as well -
Edit multiple records with BC4J and Struts-JSP
Hi everybody,
I'm building BC4J components using entities and views and JSP business components. How can I edit and update multiple records at a time with Struts-Jsp ? Have someone already an example (with JSP and ActionForm code) ?
thank youHi,
Nobody have an example ? Is it so difficult ?
Thanks -
Search/Query Form bc4j-uix-jsp
Hi:
Are there any samples of Search/Query jsps using
bc4j -uix jsps?
There are some on OTN using html.
I want to set up a search page that users can select one or more(AND) from about 5 attributes
of a view and then display approx 6-8 different attributes of that same view.
Any input would be appreciated.
Thanks.Once you create the Query-by-Form datawebbean, you can modify the templates in the templates\webapp directory by changing all usages of the FindForm bean to use your new DWB. You can also create a new webapp template by copying the existing file and creating a new directory. You can add you new template by modifying the templates\apptemplates.xml. The current entries are:
<?xml version="1.0"?>
<APPTEMPLATES>
<TEMPLATE NAME="default" DIRECTORY="templates/webapp/" USETHEMESELECTION="YES">
</TEMPLATE>
<TEMPLATE NAME="Oracle" USEFORMSELECTION="NO" DIRECTORY="templates/cabowebapp/" THEMEDIR="/webapp/jsimages" THEMECSS="/webapp/cabo/images/cabo_styles.css" USETHEMESELECTION="NO" TOOLBARCLASS="oracle.jbo.html.databeans.JSNavigatorBar">
</TEMPLATE>
</APPTEMPLATES> -
BC4J&Servlets&Jsps:(Dev Team)Pro. impl. the combination With full Utiliz. of pooling
Hi,
I am having Problem in the area of Application Module Pooling and the Connection pooling while doing the load test of my application using the BC4J in servlets and Jsps.
1) I am using IAS 1.0.2 comes with BC4J 3.2.1. All my Jsps pages are unable to load the new application. Properties file, it is working with the old properties file.
At this time I copied new BC4J 3.2.2 libraries to IAS, now the new properties file was loaded and making the connection pool.
If I do the load test of 10 requests with concurrency 2 it was failing the requests. I increased the pool size to 20, but no use. (See the errors below)
I have no problems with concurrency 1 and any number of requests. Only the problem is coming when we increased the concurrency more than 1.
2) I am wondering about the scalability issue of using the BC4J in JSP's and servlets with Apache Jserv (IAS 1.0.2)
3) Is it IAS 1.0.2 bug free?
4) I am wondering how this pooling stuff will be starting working in normal local deployment mode.
5) Why the IAS was not given the clean instructions to Local Deployment of BC4J applications.
6) My application is working only if there is no concurrency
Any feed back from Dev Team.
7) My application is using about 30% of CPU time when doing the load test for 50 requests ay concurrency of 1.
Is there any way tune the JAVA stuff.
Thanks in advance
Please see the errors:
[01/03/2001 20:15:04:229 EST] java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.lang.RuntimeException.<init>(RuntimeException.java:47)
at oracle.jbo.html.jsp.JSPApplicationRegistry.registerApplicationFromPropertyFile(JSPApplicationRegistry.java:212)
at oracle.jbo.html.jsp.JSPApplicationRegistry.registerApplicationFromPropertyFile(JSPApplicationRegistry.java:104)
at jspstock.stock__today._jspService(Compiled Code)
at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java)
at oracle.jsp.app.JspApplication.dispatchRequest(JspApplication.java)
at oracle.jsp.JspServlet.doDispatch(JspServlet.java)
at oracle.jsp.JspServlet.internalService(Compiled Code)
at oracle.jsp.JspServlet.service(JspServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at org.apache.jserv.JServConnection.processRequest(JServConnection.java:314)
at org.apache.jserv.JServConnection.run(JServConnection.java:188)
at java.lang.Thread.run(Thread.java:479)
[09/03/2001 14:10:48:320 EST] JBO-25302: Component object StockTodayView has no parent
oracle.jbo.InvalidOwnerException: JBO-25302: Component object StockTodayView has no parent
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.lang.RuntimeException.<init>(Compiled Code)
at oracle.jbo.JboException.<init>(Compiled Code)
at oracle.jbo.InvalidOwnerException.<init>(InvalidOwnerException.java:33)
at oracle.jbo.server.ComponentObjectImpl.getRootApplicationModule(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.getDBTransaction(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.addRowSet(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.createViewRowSet(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.getDefaultRowSet(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.isForwardOnly(Compiled Code)
at oracle.jbo.server.xml.XmlRowSetRenderer.printXmlForRowSet(Compiled Code)
at oracle.jbo.server.xml.XmlRowSetRenderer.print(Compiled Code)
at oracle.jbo.html.databeans.XmlData.print(Compiled Code)
at oracle.jbo.html.databeans.XmlData.render(Compiled Code)
at jspstock.stock__today._jspService(Compiled Code )
at oracle.jsp.runtime.HttpJsp.service(Compiled Code)
at oracle.jsp.app.JspApplication.dispatchRequest(Compiled Code)
at oracle.jsp.JspServlet.doDispatch(Compiled Code)
at oracle.jsp.JspServlet.internalService(Compiled Code)
at oracle.jsp.JspServlet.service(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at org.apache.jserv.JServConnection.processRequest(Compiled Code)
at org.apache.jserv.JServConnection.run(Compiled Code)
at java.lang.Thread.run(Compiled Code)
oracle.jbo.AttributeLoadException: JBO-27022: Failed to load value at index 4 with java object of type java.lang.String due to java.
sql.SQLException.
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.lang.RuntimeException.<init>(Compiled Code)
at oracle.jbo.JboException.<init>(Compiled Code)
at oracle.jbo.AttributeLoadException.<init>(AttributeLoadException.java:40)
at oracle.jbo.server.OracleSQLBuilderImpl.doLoadFromResultSet(Compiled Code)
at oracle.jbo.server.AttributeDefImpl.loadFromResultSet(Compiled Code)
at oracle.jbo.server.ViewRowImpl.populate(Compiled Code)
at oracle.jbo.server.ViewDefImpl.createInstanceFromResultSet(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.createInstanceFromResultSet(Compiled Code)
at oracle.jbo.server.QueryCollection.populateRow(Compiled Code)
at oracle.jbo.server.QueryCollection.fetch(Compiled Code)
at oracle.jbo.server.QueryCollection.get(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.getRow(Compiled Code)
at oracle.jbo.server.ViewRowSetIteratorImpl.doFetch(Compiled Code)
at oracle.jbo.server.ViewRowSetIteratorImpl.ensureRefreshed(Compiled Code)
at oracle.jbo.server.ViewRowSetIteratorImpl.refresh(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.notifyRefresh(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.execute(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.executeQuery(Compiled Code)
at oracle.jbo.server.xml.XmlRowSetRenderer.printXmlForRowSet(Compiled Code)
at oracle.jbo.server.xml.XmlRowSetRenderer.print(Compiled Code)
at oracle.jbo.html.databeans.XmlData.print(Compiled Code)
at oracle.jbo.html.databeans.XmlData.render(Compiled Code)
at jspstock.stock__today._jspService(Compiled Code)
at oracle.jsp.runtime.HttpJsp.service(Compiled Code)
at oracle.jsp.app.JspApplication.dispatchRequest(Compiled Code)
at oracle.jsp.JspServlet.doDispatch(Compiled Code)
at oracle.jsp.JspServlet.internalService(Compiled Code)
at oracle.jsp.JspServlet.service(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at org.apache.jserv.JServConnection.processRequest(Compiled Code)
at org.apache.jserv.JServConnection.run(Compiled Code)
at java.lang.Thread.run(Compiled Code)
## Detail 0 ##
java.sql.SQLException: Exhausted Resultset
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.sql.SQLException.<init>(SQLException.java:43)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:273)
at oracle.jdbc.driver.OracleStatement.prepare_for_new_get(Compiled Code)
at oracle.jdbc.driver.OracleStatement.getObjectValue(Compiled Code)
at oracle.jdbc.driver.OracleStatement.getObjectValue(Compiled Code)
at oracle.jdbc.driver.OracleResultSetImpl.getObject(Compiled Code)
at oracle.jbo.server.OracleSQLBuilderImpl.doLoadFromResultSet(Compiled Code)
at oracle.jbo.server.AttributeDefImpl.loadFromResultSet(Compiled Code)
at oracle.jbo.server.ViewRowImpl.populate(Compiled Code)
at oracle.jbo.server.ViewDefImpl.createInstan ceFromResultSet(Compiled Code)
at oracle.jbo.server.ViewObjectImpl.createInstanceFromResultSet(Compiled Code)
at oracle.jbo.server.QueryCollection.populateRow(Compiled Code)
at oracle.jbo.server.QueryCollection.fetch(Compiled Code)
at oracle.jbo.server.QueryCollection.get(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.getRow(Compiled Code)
at oracle.jbo.server.ViewRowSetIteratorImpl.doFetch(Compiled Code)
at oracle.jbo.server.ViewRowSetIteratorImpl.ensureRefreshed(Compiled Code)
at oracle.jbo.server.ViewRowSetIteratorImpl.refresh(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.notifyRefresh(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.execute(Compiled Code)
at oracle.jbo.server.ViewRowSetImpl.executeQuery(Compiled Code)
at oracle.jbo.server.xml.XmlRowSetRenderer.printXmlForRowSet(Compiled Code)
at oracle.jbo.server.xml.XmlRowSetRenderer.print(Compiled Code)
at oracle.jbo.html.databeans.XmlData.print(Compiled Code)
at oracle.jbo.html.databeans.XmlData.render(Compiled Code)
at jspstock.stock__today._jspService(Compiled Code)
at oracle.jsp.runtime.HttpJsp.service(Compiled Code)
at oracle.jsp.app.JspApplication.dispatchRequest(Compiled Code)
at oracle.jsp.JspServlet.doDispatch(Compiled Code)
at oracle.jsp.JspServlet.internalService(Compiled Code)
at oracle.jsp.JspServlet.service(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at org.apache.jserv.JServConnection.processRequest(Compiled Code)
at org.apache.jserv.JServConnection.run(Compiled Code)
at java.lang.Thread.run(Compiled Code)
oracle.jbo.common.ampool.ApplicationPoolException: JBO-30004: An application module that was not checked out was checked into the po
ol, com_globe_invester_stock_InvesterStockAppModule
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.lang.RuntimeException.<init>(Compiled Code)
at oracle.jbo.JboException.<init>(Compiled Code)
at oracle.jbo.common.ampool.ApplicationPoolException.<init>(Compiled Code)
at oracle.jbo.common.ampool.ApplicationPoolImpl.checkin(Compiled Code)
at jspstock.stock__today._jspService(Compiled Code)
at oracle.jsp.runtime.HttpJsp.service(Compiled Code)
at oracle.jsp.app.JspApplication.dispatchRequest(Compiled Code)
at oracle.jsp.JspServlet.doDispatch(Compiled Code)
at oracle.jsp.JspServlet.internalService(Compiled Code)
at oracle.jsp.JspServlet.service(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at org.apache.jserv.JServConnection.processRequest(Compiled Code)
at org.apache.jserv.JServConnection.run(Compiled Code)
at java.lang.Thread.run(Compiled Code)
BC4J HTTP Container was timed out
The binding listener for InvesterStockAppModule was timed outSee if the following messages help:
http://technet.oracle.com:89/ubb/Forum2/HTML/006553.html
http://technet.oracle.com:89/ubb/Forum2/HTML/006831.html
http://technet.oracle.com:89/ubb/Forum2/HTML/006864.html -
Ideas pls for a small application on java and jsp?
hi ,
I would like to create an application which for resume. I would like to codify the java code . The java code should be able to autogenerate jsp file's since the output of the resume would be on an jsp page. To add it simply a wizard for dynamic resume creation using java swings and jsp. Code for jsp should be autogenerated please note it.
Ideas please!
Thanks in advanceI'd like to add more information to Patreck's suggestion.
JSP pages are wonderful if you need the web server to perform some actions before sending you the final web page.
Here, you don't need the web server to do anything because your Swing application can do it for you. As Patreck implies, Swing can make a connection to the database, retrieve any information you want, perform whatever logic you need, and write the output to an HTML file.
To give you an example, you can use Internet Explorer to view a basic web page on your hard disk. You can also use Microsoft Word to view the same basic web page. They both do the same task and there is no need to force IE to use its Word plug-in in order to view the web page.
JSPs are not necessary because Swing will do all of the work for you. You only need JSPs if you want people to use your program through a web browser because they can't do Swing inside a web browser. You should only use one or the other, not both. Understand now?
If you really really must generate JSP code from a Swing application, then just write out the JSP stuff in the file. For example...
public void createWebPage( Printwriter pw, String myName ) {
pw.println( "<% String myJSPName = \"" + myName + "\" %>" );
pw.println( "<HTML>");
pw.println( "<HEAD>");
pw.println( "<TITLE>My Resume</TITLE>" );
pw.println( "</HEAD>");
pw.println( "<BODY>" );
pw.println( "<H1>My name is " + myName + " and my JSP name is <%= myJSPName %></H1>" );
pw.println( "</BODY>" );
pw.println( "</HTML>" );
}As you can see, it's pointless to embed JSP when you can do all the programming within Swing first and just write out the correct response. -
[URGENT] Performance problem with BC4J and partioned data
Hi all,
I have a big performance probelm with BC4J and partitioned data. As as partitioned table shouldn't have a primary key like a sequence (or something else) my partitioned table doesn't have any primary key.
When I debug my BC4J application I can see a message showing me "ignoring row with no primary key" from EntityCache. It takes a long time to retrieve my data even if I use the partition keys. A quick & dirty forms application was multiple times faster!
Is this a bug in BC4J, or is BC4J not suitable for partitioned data? Can anyone give me a hint what to do, do make the BC4J application fast even with partitioned data? In a non-partitioned environment the application works quite well. So it seams that it must be an "error" somewhere in this part.
Thanks,
AxelHere's a SQL statement that creates the table.
CREATE TABLE SEARCH
(SEAR_PARTKEY_DAY NUMBER(4) NOT NULL
,SEAR_PARTKEY_EMP VARCHAR2(2) NOT NULL
,SEAR_ID NUMBER(20) NOT NULL
,SEAR_ENTRY_DATE TIMESTAMP NOT NULL
,SEAR_LAST_MODIFIED TIMESTAMP NOT NULL
,SEAR_STATUS VARCHAR2(100) DEFAULT '0'
,SEAR_ITC_DATE TIMESTAMP NOT NULL
,SEAR_MESSAGE_CLASS VARCHAR2(15) NOT NULL
,SEAR_CHIPHERING_TYPE VARCHAR2(256)
,SEAR_GMAT VARCHAR2(1) DEFAULT 'U'
,SEAR_NATIONALITY VARCHAR2(3) DEFAULT 'XXX'
,SEAR_MESSAGE_ID VARCHAR2(32) NOT NULL
,SEAR_COMMENT VARCHAR2(256) NOT NULL
,SEAR_NUMBER_OF NUMBER(3) NOT NULL
,SEAR_INTERCEPTION_SYSTEM VARCHAR2(40)
,SEAR_COMM_PRIOD_H NUMBER(5) DEFAULT -1
,SEAR_PRIOD_R NUMBER(5) DEFAULT -1
,SEAR_INMARSAT_CES VARCHAR2(40)
,SEAR_BEAM VARCHAR2(10)
,SEAR_DIALED_NUMBER VARCHAR2(70)
,SEAR_TRANSMIT_NUMBER VARCHAR2(70)
,SEAR_CALLED_NUMBER VARCHAR2(40)
,SEAR_CALLER_NUMBER VARCHAR2(40)
,SEAR_MATERIAL_TYPE VARCHAR2(3) NOT NULL
,SEAR_SOURCE VARCHAR2(10)
,SEAR_MAPPING VARCHAR2(100) DEFAULT '__REST'
,SEAR_DETAIL_MAPPING VARCHAR2(100)
,SEAR_PRIORITY NUMBER(3) DEFAULT 255
,SEAR_LANGUAGE VARCHAR2(5) DEFAULT 'XXX'
,SEAR_TRANSMISSION_TYPE VARCHAR2(40)
,SEAR_INMARSAT_STD VARCHAR2(1)
,SEAR_FILE_NAME VARCHAR2(100) NOT NULL
PARTITION BY RANGE (SEAR_PARTKEY_DAY, SEAR_PARTKEY_EMP)
PARTITION SEARCH_MAX VALUES LESS THAN (MAXVALUE, MAXVALUE) MIRA4_SEARCH_EVEN
);of course SEAR_ID is filled by a sequence but the field is not the primary key as it would decrease the performance of partitioned data.
We moved to native JDBC with our application and the performance is like we never expected to be! -
Hi frnds i want to help in servlet,java bean and JSP
hi friends i'm right now in M.SC(IT) and i want to do project in SERVLET,,JAVA BEANS and JSP ,
so pls give me a title about that
NOTE: I develop a project in group(2 persons there)
my email id is : [email protected] , [email protected] , [email protected]You cannot pair your iPod to a cell phone, so forget about it.
The only way you can get free WiFi is to hang out at a Denny's, a Starbucks, or a truck stop, and I don't think your parents would approve.... -
Cannot checkin/checkout html, js, txt, and jsp files in MS Sharepoint Workspace 2010
I am having issues checkin/checkout html, js and jsp files in Microsoft Sharepoint Workspace 2010. I can access (checkin/checkout) any files in the actual Sharepoint site, but when I am synchronized to the site in Sharepoint Workspace 2010 I cannot access
html, js, and jsp files. When I try to checkout a html file, a message pops up saying:
"Can not perform this operation. This document has been checked out or may no longer exist."
Could this be a synchronization issue, or was Sharepoint Workspace 2010 not design to work with html, js, txt, and jsp files?Hi Armando,
I'm afraid that you posted your question on the wrong forum. This forum is intended for Project Server questions. Please go to this forum in order to have answers from experts:
http://social.technet.microsoft.com/Forums/sharepoint/en-US/home?category=sharepoint&filter=alltypes&sort=lastpostdesc
Cheers.
Guillaume Rouyre - MBA, MCP, MCTS -
Creating FOrums with Servlet and JSP
Hi everyone,
Is there a good resource that explains how to build a forum using servlets and JSP technology?
Regards,
Basil Mahdiplease let me know here if you find any useful resources...I am in the process of writing my own searchable threaded forum for my company with JSP's/servlets. It's a very slow process at the moment though...if I ever finish it, I'll gladly share it.
-
How to master good design with EJB and JSP?
I use JSP to calling EJB. But the .jsp file is complex and it's difficult to maintain...I just want to work higher efficent with EJB,JSP and JavaBean. I want to know is there a good design with EJB and JSP? and is there any good material about MVC for EJB,JSP and JavaBean?
You should read the J2EE blueprint available on this website. Better download the PDF, and print it for yourself so you can read it anytime.
-
WL vs. WL-express and JSP vs. javascript/SQL
folks-
i am trying to convince a certain party to
disband a web-based job tracking system being
written in ASP, javascript, html, css and SQL.
it will be hosted on MS webserver running NT.
i am trying to convince them to use JSP and
WL express. i have done two years of EJB
component work on weblogic, however, i have not
done work with JSP or thin-clients. i was mostly
business-logic.
anyway i have some questions and need some
direction. i already know JSP is better than
ASP/javascript etc. because:
* ASP is proprietary. ditto for VBscript
* with an IDE creating JSP is easy and JSP
automatically creates servlets which is way
faster than by hand
* JSP is JAVA based and hence benefits from
all the portability pluses of JAVA
but here are the more difficult questions:
* why is WL express better than an MS
web server? (not including WL market share
and size. after all MS can claim that)
* since WL express does not have an EJB
container, how do you access the database?
via JDBC? does one just have JDBC code
floating around?
* since there is no EJB container how does
one separate presentation from logic from
data access? this is a major downside of
javascript, html, css and SQL etc.
* if a web app grows beyond JSP with WL express
into the need for an EJB container, i would
think that most of the app needs to re-written
as business-logic must be refactored into EJBs
and all JDBC code will be replaced by container
managed beans. this sounds a like a lot of
rework.
* isn't JSP slower than javascript as the
servlet and hmtl code is bounced back and
force across the network?
with respect to architecture, scalability,
and robustness what are the downsides to an
MS webserver and non-JSP coding?* since WL express does not have an EJB
container, how do you access the database?
via JDBC? does one just have JDBC code
floating around?
Use JDO or an OR-mapper or embed JDBC into your own data access classes.
* since there is no EJB container how does
one separate presentation from logic from
data access? this is a major downside of
javascript, html, css and SQL etc.
Presentation=JSP
Logic=Servlet
Data access=JDO or similar
* if a web app grows beyond JSP with WL express
into the need for an EJB container, i would
think that most of the app needs to re-written
as business-logic must be refactored into EJBs
and all JDBC code will be replaced by container
managed beans. this sounds a like a lot of
rework.
You should be able to tell up front if it a tx-intensive app that requires
WLS.
* isn't JSP slower than javascript as the
servlet and hmtl code is bounced back and
force across the network?
They aren't exclusive. For dynamic pages, use Javascript on the front end,
JSP on the back.
* with respect to architecture, scalability,
and robustness what are the downsides to an
MS webserver and non-JSP coding?
In the real world, and for most apps, while Java has the architectural edge,
they both have similar scalability and similar robustness. MS gives you no
choice though, and you rewrite every time they see a new buzzword. You can't
leave MS-land without abandoning almost everything. You can leave WLS in a
week if you have to.
It's an investment. Invest wisely.
Peace,
Cameron Purdy
Tangosol, Inc.
Clustering Weblogic? You're either using Coherence, or you should be!
Download a Tangosol Coherence eval today at http://www.tangosol.com/
"shane miller" <[email protected]> wrote in message
news:[email protected]...
folks-
i am trying to convince a certain party to
disband a web-based job tracking system being
written in ASP, javascript, html, css and SQL.
it will be hosted on MS webserver running NT.
i am trying to convince them to use JSP and
WL express. i have done two years of EJB
component work on weblogic, however, i have not
done work with JSP or thin-clients. i was mostly
business-logic.
anyway i have some questions and need some
direction. i already know JSP is better than
ASP/javascript etc. because:
* ASP is proprietary. ditto for VBscript
* with an IDE creating JSP is easy and JSP
automatically creates servlets which is way
faster than by hand
* JSP is JAVA based and hence benefits from
all the portability pluses of JAVA
but here are the more difficult questions:
* why is WL express better than an MS
web server? (not including WL market share
and size. after all MS can claim that)
* since WL express does not have an EJB
container, how do you access the database?
via JDBC? does one just have JDBC code
floating around?
* since there is no EJB container how does
one separate presentation from logic from
data access? this is a major downside of
javascript, html, css and SQL etc.
* if a web app grows beyond JSP with WL express
into the need for an EJB container, i would
think that most of the app needs to re-written
as business-logic must be refactored into EJBs
and all JDBC code will be replaced by container
managed beans. this sounds a like a lot of
rework.
* isn't JSP slower than javascript as the
servlet and hmtl code is bounced back and
force across the network?
with respect to architecture, scalability,
and robustness what are the downsides to an
MS webserver and non-JSP coding? -
Hot swap and JSP debugging for Weblogic in exploded format?
Hi,
I'm trying to use JDeveloper for JSF development to be deployed to a weblogic server.
I must say JDeveloper is a great tool for JSF development as none of the free IDE in the market can do what JDeveloper does.
However, I have a question on hot swap and JSP debugging.
I have managed to setup JDeveloper to debug my JSF application deploy to my Weblogic server's applications folder in exploded format.
I can step through the java code.
However, I didn't manage to do a hot swap and the break point set in the JSF-JSP does not seems to take effect.
I would appreciate any advice on the problem.
Thanks.
Han MingHow did you setup the server to handle exploded format? Appreciate the help. Sorry can't help with your question though.
Thnx.
Soni -
I'm developing web application with OAS
4.0.8.1 and JDeveloper 3.0 and I want to call
JSP from servlet using "RequestDispatcher".
I downloaded JSP for OAS from www.olab.com.
In the Release note, there is a description
about RequestDispatcher, but I cannot
understand about details.
In what configuration can I use servlet and
JSP together with RequestDispatcher. Anyone
scceeded about that?
nullwan (guest) wrote:
: Hi everyone,
: I am using OAS 4.0.8 on Solaris 2.6. After viewing servlet
: and JSP samples, I am kind of confuse whether OAS supports the
: following options
: 1. JSP
: 2. servlet chaining
: 3. running JDeveloper DB Servlet wizard
: (oracle.jdeveloper.servlet.*) and Java Business Objects
: (oracle.jbo.rt.cs)
: Thank you for your time.
I found a white paper 408newfead.pdf, that says under "Future
Directions" that it will add jsp support. I read somewhere (I
can't remember where exactly :( ) that said 4.0.8.1 would
support
JSPs. I don't know if this release is out yet.
I wish Oracle would get with the times and put out a product that
is consistent with the technology they are touting as the
future.
Having us download Suns server to run servlets and JSP is
ridiculous for the worlds second largest software company!
null -
I am new to Beans and JSP. I would like to know how I can 'get' the resultset and output to a JSP? It would have a few records and each record will have field1,field2 and field3.
My question again: How to continue from here in Beans? How to write the code in JSP? Can anyone guide me with some simple codes as I would not be able to understand advance codes.
Thanks.
public String Login(String inputDep) throws SQLException
String returnString = null;
String dbUserid = "sa"; // Your Database user id
String dbPassword = "" ; // Your Database password
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:test", dbUserid ,dbPassword);
Statement stmt = con.createStatement();
String sql= "select * from Product where dept = '"+inputDep+"'";
ResultSet rs = stmt.executeQuery(sql);You could also try to read the resultset in your bean.
like:
=========== Bean ===============
public class myClass
public AccountData Login(String name, String password)
AccountData data = new AccountData ();
data.setName (resultset.getString ("name"));
//other setter methods
return data;
// use inner class to store values
public class AccountData
AccountData ()
private String name = null;
//further attributes
pubilic String getName ()
return name;
void setName (String name)
this.name = name;
//further getter and setter
}=========== JSP ===============
<jsp:useBean id="myBean" scope="session" class="classes.BeanClass"/>
<% MyClass.AccountData data = myBean.Login (name, password); %>
Name : <%= data.getName () %>Note > means %>
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