raja patil

Hello Krishna Kanth,

Can you guide me about how can I pass bean defined with following statement as Constructor Argument to Another Bean.

<task:scheduled-tasks scheduler="taskScheduler">

I tried Passing it as "taskSchedular" but a exception is Raised. I also tried to put id="mySchedular" but attribute id is Not Allowed.

Thanks and warm regards

Raja Patil

Thanks krishna kanth for quick response,

krishna kanth wrote:You should be able to add / remove if you get hold of the instances of ScheduledTaskManager (there must be some sort of manager :-)), from java code.

what API are you using?

I am using java for services and from the service I would like to access The ScheduledTaskManager bean and add/remove/disable tasks.
The required Parameters like Task Name, cron string and whether to add/remove/disable will be passed to the service.

I would like to know how to get hold of ScheduledTaskManager bean which is instantiated by xml config (refer my original post) and what class it is, so that I can refer the spring docs and do needful depending upon methods and properties available on that class.

BTW I use eclipse as IDE for development.


Thanks and warm regards.

Raja Patil

Hello,

I have configured scheduled tasks as follows in context xml and working as expected.

<task:scheduled-tasks scheduler="taskScheduler"> <!-- A cron-based trigger. --> <task:scheduled ref="conflictResolutionBean" method="scheduledAutoResolve" cron="${cron.scheduledAutoResolve}" /> </task:scheduled-tasks>

Is it possible to disable/remove this cron task at Runtime ?
as well is it possible to add another cron/fixed Interval/Fixed Delay tasks at runtime ?

If Yes can somebody tell me How.

Thanks and warm Regards.

Raja Patil

Hello,

I would like to Download Binary Bundled Distribution For Spring 3.2.4. I have visited Spring Source site but I could not locate URL for Downloading Bundled Distribution. What I was able to find is Maven repository URL. Can somebody guide me where Can I get Binary Bundled Distribution as we were able to download in Past.

BTW i am looking for version for Ubuntu 12.04 LTS 64 Bit.

Thanks and warm Regards.

Raja

Hello,

I trying to form a cluster of tomcat 7 servers. I have used Memcached-Session-Manager + CouchbaseServer for session replication. I have used HAProxy for loadbalancing. Lab Tests are satisfactory for sticky as well non-sticky sessions. MSM session manager is configured in applications META-INF/Context.xml. I have thought of using farmWarDeployer for auto deployment of war among the cluster. I referred tomcat documentation where it is configured in <host> section of server.xml along with <cluster> element which uses simpletcpcluster class and inturn it uses deltamanager. I fear that both deltamanager and MSM may have some sort of clash. Since this is my first web application project I have no experience with Tomcat Config intricacies.

Can some body guide me in configuring the FarmWarDeployer along side with MSM.

Thanks and warm regards

Raja Patil

These is No config in server.xml.
WEB-INF/web.xml has <distributale/> element
and The MEATA-INF/Config.xml is as Follows

<?xml version="1.0" encoding="UTF-8"?> <Context> <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager" memcachedNodes="http://localhost:8091/pools" username="tomcat" password="rsp123" sticky="false" sessionBackupAsync="false" memcachedProtocol="binary" requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" /> </Context>

Hello,

I have deployed a web application by using .xml in conf/Catalina/localhost/ dir and it works fine.

The xml is as follows

<?xml version="1.0" encoding="UTF-8"?> <Context path="/Tej-EIS" docBase="/home/rsp/Backup/Appl/Web_Dev/Java_WorkSpace/Tej-EIS/WebContent" antiResourceLocking="false" allowLinking="true"> <Loader className="org.apache.catalina.loader.VirtualWebappLoader" virtualClasspath="/home/rsp/Backup/Appl/Web_Dev/Java_WorkSpace/Tej-EIS/WebContent/appl_lib/*.jar; /home/rsp/Backup/Appl/Web_Dev/Java_WorkSpace/Tej-EIS/WebContent/report_styles; /home/rsp/Backup/Appl/Web_Dev/Java_WorkSpace/Tej-EIS/WebContent/config"/> </Context>

What I want to do is replace "/home/rsp/Backup/Appl/Web_Dev/Java_WorkSpace/Tej-EIS/WebContent"
(which is same as docbase) as appropriate ${} variable so that when I change docBase specs rest
of the virtualClasspath is automatically set.

Please guide me what variable should I use ?

Thanks and warm regards.

Raja Patil
for virtualClasspath attribute.

Hello,

We are implementing a Flex->Tomcat->Spring->Mybatis->Firebird web Application. Its a Fresh setup altogether.
What we have planned is as Follows.
+------------------------+ internet | | | Tomcat Server Cluster in Load Balancing and Failover ---------------+ | | | Apache | | | HTTPD +-------------------+ VPN | | | ---------------+ | | | | | | | | | +------------------------+

There will be a Front Apache HTTP server which will serve a Generic website common to external as well internal users.
That web site will contain a link which will be only available to Internal Staff which will be pointing to Flex/Spring application
residing on Tomcat server. The generic website for External users will be a static web pages. Website for Internal staff
has static pages as well a page which loads Flex swf. Right now Internal Staff web site is Loaded on Linux M/C
for testing purpose and configured in such way that when a page containing swf is requested Login form is presented
and only when login is successful Flex application is Loaded.

What I need is some study material to implement Tomcat clustering for Obvious reasons like Scalability, Failover, and High Availability.
I am new to Tomcat Implementation and this is My First setup of Web application. So I dont have any previous experience.

What I would like to know is what are changes required in spring application config, web pages etc. etc. and a concept how
request/respose cycle will be completed in new scenario.


Thanks and warm regards.

Raja Patil

hello,

I am using iReport 4.8 and report structure is as follows

page header

detail band has only subreport

Group Footer

Page Footer

Subreport is summing up amt field and returning that value to main Report.

In group footer that returned value is being displayed and its working correctly.
Just below the Total Amount field I want to display tax Amt by using another variable with expression $V(TotAmt)*$F(taxRate)/100.00
but its being displayed as 0.00. For debug purpose I displayed taxRate field its also showing correct value of 7%.

Now I am puzzled that whether sub-report vales can be used in calculations in main Report ?

Can somebody guide me ?

Thanks and warm regards.

Raja

Hello,

I am absolute beginner of JMX. We have deployed Symmetric DS replicator at Branch Offices in a local Tomcat Instance and
we can access Mbeans for its Instance to get various values successfully Over JMX with VisualVM/Jconsole etc. etc.
The replicator is replicating Local Database to HO which is Updated by Bunch of Local Applications written in non Java
languages like (VB/Delphi/C++ quite heterogeneous mix of small applications). We plan to extend these applications to
have replication Information dashboard so that users will info about status of replication activity. The information
we would like to show is accessible in Jconsole through Mbeans for Symmetric DS instance.

The idea we would like to implement is to have our own servlet deployed along with symmetric DS in same Tomcat Instance
as Another Context. Local application will pass HTTP Request to this servlet and servlet will respond with information (in XML Format)
about status of replication by querying over JMX to symmetric DS.

Is it possible to connect another context over JMX in same Tomcat Instance ?

if yes, How to do that ? any example/URLs/Books/code snippets etc. etc. are highly appreciated.


Thanks and warm regards.

Raja Patil.

Thanks Rob Spoor,

Rob Spoor wrote:AccessingFileFormats has a few links to useful libraries. You will need to do a bit of the work manual, but the actual outputting of values can be done using those libraries.

Well, I asked for a penny and Key to a treasure has been handed over.
The link contains information which will take care of requirements in future too.

BTW one format which I need right now i.e. dbf is missing in that article.
any free open source jdbc driver for dbf ?

Can anybody address this issue.

Thanks and best regards

Raja

Hello,

I am doing a Flex 4, Blazeds, Spring, myBatis, jasperReports application project.
I am able to export jasperReport print object in many formats out of Box.

Now a new requirement has popped up. User needs the base data used for
report in xls, dbf, csv, txt formats which comes from database table through
myBatis in the form of Arraylist of record bean. Beans fields correspond to
database column names used in the query. This will used for further analysis
of report in excel or some other software.

Can somebody guide me how can I achieve this ?

any libs, docs, links will be a great help.

Thanks and regards

Raja

hello,

this is in continuation of other thread "puzzling Parsing Of dates"
while dissecting above problem I saw recommendations to have
application's default Timezone to tackle date time processing and persistence
issues. The idea is let application be hosted on server in any time zone
it will have fixed time zone so that all dates and times are persisted and
retrieved wrt specific time zone context.

If anybody differs with this your comments are welcomed and are valuable to me.

But I also came to know that application specific timezones can not be set but
I have to set timezone for entire JVM i.e. for all the applications using that JVM.

its suggested that JDK should be started with -Duser.timezone="<tz to set>"

I am using Spring, blazeDS, spring-security, spring-flex and iBatis at backend
so I am not starting JVM manually. So How can i use this parameter to set default timezone of "GMT+0530"
please guide me where shall i put this so that JVM uses this timezone by default.

Thanks and regards

Raja

Thanks to all who contributed to this thread,

It Seems that there is No problem with IST. The history of IST (Indian Standard Time) Like that only.
Before 1900 there was no definition of IST.
initially IST was using Madras (Chennai) Time then Kolkata time then after Independence in 1947
its using Ujain i.e. Meridian Passing through almost centre of the state so there are three different
offsets the listing below clearly indicates that. During analysis of this issue I learnt that timezones
are fixed by Politicians and not by scientists thats why there are many such issues to be dealt with
by programmers by simply setting time zone to GMT+0530 all the date time issues get vanished.
public class Test4Dates { /** * @param args */ public static void main(String[] args) { // Mon Jan 01 05:53:20 IST 1900 SimpleDateFormat fmt = new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy"); TimeZone old_tz = TimeZone.getDefault(); System.out.println("Default tz Name = " + TimeZone.getDefault().getID()); // TimeZone.setDefault(TimeZone.getTimeZone("GMT+0530")); // System.out.println("Default tz Name = " + TimeZone.getDefault().getID()); Calendar c = Calendar.getInstance(); TimeZone tz = TimeZone.getDefault(); System.out.println("tz Name = " + tz.getID() + " RawOffset = " + tz.getRawOffset() + " useDaylightTime = " + tz.useDaylightTime() + "\n"); for (int i = 1900; i < 1950; i = i + 1) { try { Date dt1 = fmt.parse("Mon Jan 01 05:30:00 IST " + i); c.setTime(dt1); System.out.println("date = " + dt1 + " offset = " + tz.getOffset(dt1.getTime()) + " getTime = " + dt1.getTime() + " mins = " + c.get(Calendar.MINUTE)); Date dt2 = fmt.parse("Mon Jan 01 05:29:59 IST " + i); c.setTime(dt2); System.out.println("date = " + dt2 + " offset = " + tz.getOffset(dt2.getTime()) + " getTime = " + dt2.getTime() + " mins = " + c.get(Calendar.MINUTE) + "\n"); } catch (ParseException e) { e.printStackTrace(); } } System.out.println("Default tz Name = " + TimeZone.getDefault().getID()); TimeZone.setDefault(old_tz); System.out.println("Default tz Name = " + TimeZone.getDefault().getID()); } }
Default tz Name = Asia/Kolkata tz Name = Asia/Kolkata RawOffset = 19800000 useDaylightTime = false date = Mon Jan 01 05:53:20 IST 1900 offset = 21200000 getTime = -2208988800000 mins = 53 date = Mon Jan 01 05:29:59 IST 1900 offset = 19800000 getTime = -2208988801000 mins = 29 date = Tue Jan 01 05:53:20 IST 1901 offset = 21200000 getTime = -2177452800000 mins = 53 date = Tue Jan 01 05:53:19 IST 1901 offset = 21200000 getTime = -2177452801000 mins = 53 date = Wed Jan 01 05:53:20 IST 1941 offset = 21200000 getTime = -915148800000 mins = 53 date = Wed Jan 01 05:53:19 IST 1941 offset = 21200000 getTime = -915148801000 mins = 53 date = Thu Jan 01 06:30:00 IST 1942 offset = 23400000 getTime = -883612800000 mins = 30 date = Thu Jan 01 06:29:59 IST 1942 offset = 23400000 getTime = -883612801000 mins = 29 date = Fri Jan 01 06:30:00 IDT 1943 offset = 23400000 getTime = -852076800000 mins = 30 date = Fri Jan 01 06:29:59 IDT 1943 offset = 23400000 getTime = -852076801000 mins = 29 date = Sat Jan 01 06:30:00 IDT 1944 offset = 23400000 getTime = -820540800000 mins = 30 date = Sat Jan 01 06:29:59 IDT 1944 offset = 23400000 getTime = -820540801000 mins = 29 date = Mon Jan 01 06:30:00 IDT 1945 offset = 23400000 getTime = -788918400000 mins = 30 date = Mon Jan 01 06:29:59 IDT 1945 offset = 23400000 getTime = -788918401000 mins = 29 date = Tue Jan 01 05:30:00 IST 1946 offset = 19800000 getTime = -757382400000 mins = 30 date = Tue Jan 01 05:29:59 IST 1946 offset = 19800000 getTime = -757382401000 mins = 29 Default tz Name = Asia/Kolkata Default tz Name = Asia/Kolkata

with TimeZone "GMT+0530"

Default tz Name = Asia/Kolkata Default tz Name = GMT+05:30 tz Name = GMT+05:30 RawOffset = 19800000 useDaylightTime = false date = Mon Jan 01 05:30:00 GMT+05:30 1900 offset = 19800000 getTime = -2208988800000 mins = 30 date = Mon Jan 01 05:29:59 GMT+05:30 1900 offset = 19800000 getTime = -2208988801000 mins = 29 date = Tue Jan 01 05:30:00 GMT+05:30 1901 offset = 19800000 getTime = -2177452800000 mins = 30 date = Tue Jan 01 05:29:59 GMT+05:30 1901 offset = 19800000 getTime = -2177452801000 mins = 29 [b]All in between same[/b] date = Sat Jan 01 05:30:00 GMT+05:30 1949 offset = 19800000 getTime = -662688000000 mins = 30 date = Sat Jan 01 05:29:59 GMT+05:30 1949 offset = 19800000 getTime = -662688001000 mins = 29 Default tz Name = GMT+05:30 Default tz Name = Asia/Kolkata

Thanks and best regards

Raja

hello,

I just found this http://72.5.124.102/thread.jspa?messageID=10811150 which explains things about IST timezone
is really java gets confused with 3 letter timezone ? If yes then what shout I use so that java wont get confused.

Thanks and regards

Raja

sai prashanth wrote:I tried to run your code and this is my output. I dont see anything wierd here:
RawOffset = 19800000 useDaylightTime = false date = Sun Dec 31 21:30:00 CST 1899 offset = 21200000 getTime = -2208976200000 date = Sun Dec 31 21:29:59 CST 1899 offset = 21200000 getTime = -2208976201000

Thanks Sai prashanth have you tried with IST (india not Irish i.e. GMT+0530) rather than CST timezone ?
Please noticed offset values 19800000 and 21200000 that is causing problem I believe.
another thing is that from 05:29:59 to 05:30:00 there is jump of 00:23:20 and after that
it increments linearly with input value.

Thanks and regards

Raja