Utility Classes in EAR
Hello,
Can someone tell me where I should put utility classes in an .ear file when
they are being used by both the EJBs (in the .jar file) and the web app (in
the .war file). I tried just putting them in the root of the .ear file but
WL 6.0 still couldn't find them. Is there such thing as META-INF/lib?
Thanks in advance,
Rob Lewis
I remember that somebody else reported this problem - when the utility classes are
in the ejb-jar servlets do work, but JSPs fail to compile - that sounded like a WLS bug.
Here is the description of 6.0 classloading:
http://e-docs.bea.com/wls/docs60/programming/topics.html#1037589
Rob Lewis <[email protected]> wrote:
This doesn't appear to be the case. I have an EAR with a JAR and WAR in it.
I removed the utility classes from the WAR that were repeated in the JAR.
Then the JSPs failed to find those classes. JBoss lets you put utility
classes in a JAR in the EAR and then set 'Class-Path' in the manifest.mf to
point to it but this also didn't work for me in WL6.
I'm at a loss.
Rob
"Cameron Purdy" <[email protected]> wrote in message
news:[email protected]..
I think you can put them in either the JAR or the WAR and it willwork --
wl6 seems to use a single classloader for the entire ear.
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com
+1.617.623.5782
WebLogic Consulting Available
"Rob Lewis" <[email protected]> wrote in message
news:[email protected]..
Hello,
Can someone tell me where I should put utility classes in an .ear filewhen
they are being used by both the EJBs (in the .jar file) and the web app(in
the .war file). I tried just putting them in the root of the .ear filebut
WL 6.0 still couldn't find them. Is there such thing as META-INF/lib?
Thanks in advance,
Rob Lewis
Dimitri
Similar Messages
-
Utility classes in WebService EAR
What would be the best way to include utility classes in the Web Service EAR?
Thanks in advanceI remember that somebody else reported this problem - when the utility classes are
in the ejb-jar servlets do work, but JSPs fail to compile - that sounded like a WLS bug.
Here is the description of 6.0 classloading:
http://e-docs.bea.com/wls/docs60/programming/topics.html#1037589
Rob Lewis <[email protected]> wrote:
This doesn't appear to be the case. I have an EAR with a JAR and WAR in it.
I removed the utility classes from the WAR that were repeated in the JAR.
Then the JSPs failed to find those classes. JBoss lets you put utility
classes in a JAR in the EAR and then set 'Class-Path' in the manifest.mf to
point to it but this also didn't work for me in WL6.
I'm at a loss.
Rob
"Cameron Purdy" <[email protected]> wrote in message
news:[email protected]..
I think you can put them in either the JAR or the WAR and it willwork --
wl6 seems to use a single classloader for the entire ear.
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com
+1.617.623.5782
WebLogic Consulting Available
"Rob Lewis" <[email protected]> wrote in message
news:[email protected]..
Hello,
Can someone tell me where I should put utility classes in an .ear filewhen
they are being used by both the EJBs (in the .jar file) and the web app(in
the .war file). I tried just putting them in the root of the .ear filebut
WL 6.0 still couldn't find them. Is there such thing as META-INF/lib?
Thanks in advance,
Rob Lewis
Dimitri -
ClassNotFoundException on utility class in JTA Transaction
When using user defined transactions, I am finding I get odd
ClassNotFoundExceptions. I've tested this primarily on NT/2000, but did
also confirm it on Solaris. Can anyone explain it?
The exception only seems to occur if it becomes necessary to throw an
exception from the EJB. If I am not inside a user defined transaction,
there are no problems. (Even if the method is marked as Transacation
Required). Similarly, if no exception is thrown, there is also no problem
(even though I use plenty of other utility classes)
The classes (including the utility class) are all in my deployed jar file
(which is deployed as part of an ear file).
The error message is below:
java.lang.ClassNotFoundException:
com.iknowledge.inext.exception.STInvalidNameException
at
weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.
java:178)
at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at
weblogic.j2ee.ApplicationManager.loadFromNetwork(ApplicationManager.java:248
at
weblogic.j2ee.ApplicationManager.loadClass(ApplicationManager.java:175)
at
weblogic.rjvm.MsgAbbrevInputStream.readClassDescriptor(MsgAbbrevInputStream.
java:211)
at
weblogic.common.internal.ChunkedObjectInputStream$NestedObjectInputStream.re
adClassDescriptor(ChunkedObjectInputStream.java:290)
at
java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:906)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:366)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at
java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1186)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
at
java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2263)
at
java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:519)
at
java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1412)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectIn
putStream.java:107)
at
weblogic.transaction.internal.PropagationContext.readExternal(PropagationCon
text.java:304)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectIn
putStream.java:97)
at
weblogic.common.internal.ChunkedObjectInputStream.readObjectWL(ChunkedObject
InputStream.java:123)
at
weblogic.rjvm.MsgAbbrevInputStream.readTxContext(MsgAbbrevInputStream.java:1
66)
at
weblogic.rjvm.MsgAbbrevInputStream.readMessageContext(MsgAbbrevInputStream.j
ava:156)
at
weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:581)
at
weblogic.rjvm.t3.T3JVMConnection.dispatch(T3JVMConnection.java:454)
at
weblogic.socket.NTSocketMuxer.processSockets(NTSocketMuxer.java:638)
at
weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:24)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
You closed your Main class with a bracket, so your getConnection() method isn't in a class
public class Main {
/** Creates a new instance of Main */
public Main() {
public static void main(String[] args) {
Connection con = getConnection();
System.out.println("The connection is: " +con );
}That is your entire Main class. Anything below it isn't in the class. -
RE: [iPlanet-JATO] Re: Use Of models in utility classes
Hi all,
if you add the following to your spider2jato.xml
It will automatically map your CSpDataObject.executeImmediate to use
ExecuteImmediateUtil.executeImmediateSelect with the arguments mapped as
well.
Kostas
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[CSpDataObject[.\s]*executeImmediate[\s]*\(([^,]*),([^)]*)\)]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[CSpDataObject[.\s]*executeImmediate[\s]*\(([^,]*),([^)]*)\)]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[ExecuteImmediateUtil.executeImmediateSelect($1,$2,
getRequestContext())]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
-----Original Message-----
From: Matthew Stevens
Cc: vnamboori@y...
Sent: 11/29/01 11:23 AM
Subject: RE: [iPlanet-JATO] Re: Use Of models in utility classes
Namburi,
I have included an example in the file ExecuteImmediateUtil.java
The Yahoo Group will not handle the attached file we will put it in the
Files section shortly.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100253094145066046167121181">vnamboori@y...</a>]
Sent: Thursday, November 29, 2001 12:29 PM
Subject: [iPlanet-JATO] Re: Use Of models in utility classes
Matt,
For CSpSelect.executeImmediate() I have an example of custom helpermethod as a replacement which uses JDBC results instead of
CSpDBResult.
Can you send me this example.
Thanks
Namburi
--- In iPlanet-JATO@y..., "Matthew Stevens" <matthew.stevens@E...>
wrote:
Namburi,
I will post a document to the group site this evening which has thedetails
on various tactics of migrating these type of utilities.Essentially, you
either need to convert these utilities to Models themselves or keepthe
utilities as is and simply use the
RequestManager.getRequestContext.getModelManager().getModel()
to statically access Models.
For CSpSelect.executeImmediate() I have an example of custom helpermethod
as a replacement whicch uses JDBC results instead of CSpDBResult.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100208071048">vnamboori@y...</a>]
Sent: Tuesday, August 07, 2001 3:24 PM
Subject: [iPlanet-JATO] Use Of models in utility classes
Hi All,
In the present ND project we have lots of utility classes. These
classes in diffrent directory. Not part of nd pages.
In these classes we access the dataobjects and do the
manipulations.
So we access dataobjects directly like
CSpider.getDataObject("do....");
and then execute it.
Since the migration tool does not do much of conversion for these
utilities we have to do manually.
My question is Can we access the the models in the post migration
sameway or do we need requestContext?
We have lots of utility classes which are DataObject intensive.Can
someone suggest a better way to migrate this kind of code.
Thanks
Namburi
[email protected]
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
[Non-text portions of this message have been removed]
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
[Non-text portions of this message have been removed]Hi all,
if you add the following to your spider2jato.xml
It will automatically map your CSpDataObject.executeImmediate to use
ExecuteImmediateUtil.executeImmediateSelect with the arguments mapped as
well.
Kostas
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[CSpDataObject[.\s]*executeImmediate[\s]*\(([^,]*),([^)]*)\)]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[CSpDataObject[.\s]*executeImmediate[\s]*\(([^,]*),([^)]*)\)]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[ExecuteImmediateUtil.executeImmediateSelect($1,$2,
getRequestContext())]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
-----Original Message-----
From: Matthew Stevens
Cc: vnamboori@y...
Sent: 11/29/01 11:23 AM
Subject: RE: [iPlanet-JATO] Re: Use Of models in utility classes
Namburi,
I have included an example in the file ExecuteImmediateUtil.java
The Yahoo Group will not handle the attached file we will put it in the
Files section shortly.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100253094145066046167121181">vnamboori@y...</a>]
Sent: Thursday, November 29, 2001 12:29 PM
Subject: [iPlanet-JATO] Re: Use Of models in utility classes
Matt,
For CSpSelect.executeImmediate() I have an example of custom helpermethod as a replacement which uses JDBC results instead of
CSpDBResult.
Can you send me this example.
Thanks
Namburi
--- In iPlanet-JATO@y..., "Matthew Stevens" <matthew.stevens@E...>
wrote:
Namburi,
I will post a document to the group site this evening which has thedetails
on various tactics of migrating these type of utilities.Essentially, you
either need to convert these utilities to Models themselves or keepthe
utilities as is and simply use the
RequestManager.getRequestContext.getModelManager().getModel()
to statically access Models.
For CSpSelect.executeImmediate() I have an example of custom helpermethod
as a replacement whicch uses JDBC results instead of CSpDBResult.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100208071048">vnamboori@y...</a>]
Sent: Tuesday, August 07, 2001 3:24 PM
Subject: [iPlanet-JATO] Use Of models in utility classes
Hi All,
In the present ND project we have lots of utility classes. These
classes in diffrent directory. Not part of nd pages.
In these classes we access the dataobjects and do the
manipulations.
So we access dataobjects directly like
CSpider.getDataObject("do....");
and then execute it.
Since the migration tool does not do much of conversion for these
utilities we have to do manually.
My question is Can we access the the models in the post migration
sameway or do we need requestContext?
We have lots of utility classes which are DataObject intensive.Can
someone suggest a better way to migrate this kind of code.
Thanks
Namburi
[email protected]
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
[Non-text portions of this message have been removed]
For more information about JATO, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp
[Non-text portions of this message have been removed] -
Namburi,
When you said you used the Reg Exp tool, did you use it only as
preconfigured by the iMT migrate application wizard?
Because the default configuration of the regular expression tool will only
target the files in your ND project directories. If you wish to target
classes outside of the normal directory scope, you have to either modify the
"Source Directory" property OR create another instance of the regular
expression tool. See the "Tool" menu in the iMT to create additional tool
instances which can each be configured to target different sets of files
using different sets of rules.
Usually, I utilize 3 different sets of rules files on a given migration:
spider2jato.xml
these are the generic conversion rules (but includes the optimized rules for
ViewBean and Model based code, i.e. these rules do not utilize the
RequestManager since it is not needed for code running inside the ViewBean
or Model classes)
I run these rules against all files.
See the file download section of this forum for periodic updates to these
rules.
nonProjectFileRules.xml
these include rules that add the necessary
RequestManager.getRequestContext(). etc prefixes to many of the common
calls.
I run these rules against user module and any other classes that do not are
not ModuleServlet, ContainerView, or Model classes.
appXRules.xml
these rules include application specific changes that I discover while
working on the project. A common thing here is changing import statements
(since the migration tool moves ND project code into different jato
packaging structure, you sometime need to adjust imports in non-project
classes that previously imported ND project specific packages)
So you see, you are not limited to one set of rules at all. Just be careful
to keep track of your backups (the regexp tool provides several options in
its Expert Properties related to back up strategies).
----- Original Message -----
From: <vnamboori@y...>
Sent: Wednesday, August 08, 2001 6:08 AM
Subject: [iPlanet-JATO] Re: Use Of models in utility classes - Pease don't
forget about the regular expression potential
Thanks Matt, Mike, Todd
This is a great input for our migration. Though we used the existing
Regular Expression Mapping tool, we did not change this to meet our
own needs as mentioned by Mike.
We would certainly incorporate this to ease our migration.
Namburi
--- In iPlanet-JATO@y..., "Todd Fast" <toddwork@c...> wrote:
All--
Great response. By the way, the Regular Expression Tool uses thePerl5 RE
syntax as implemented by Apache OROMatcher. If you're doing lotsof these
sorts of migration changes manually, you should definitely buy theO'Reilly
book "Mastering Regular Expressions" and generate some rules toautomate the
conversion. Although they are definitely confusing at first,regular
expressions are fairly easy to understand with some documentation,and are
superbly effective at tackling this kind of migration task.
Todd
----- Original Message -----
From: "Mike Frisino" <Michael.Frisino@S...>
Sent: Tuesday, August 07, 2001 5:20 PM
Subject: Re: [iPlanet-JATO] Use Of models in utility classes -Pease don't
forget about the regular expression potential
Also, (and Matt's document may mention this)
Please bear in mind that this statement is not totally correct:
Since the migration tool does not do much of conversion for
these
utilities we have to do manually.Remember, the iMT is a SUITE of tools. There is the extractiontool, and
the translation tool, and the regular expression tool, and severalother
smaller tools (like the jar and compilation tools). It is correctto state
that the extraction and translation tools only significantlyconvert the
primary ND project objects (the pages, the data objects, and theproject
classes). The extraction and translation tools do minimumtranslation of the
User Module objects (i.e. they repackage the user module classes inthe new
jato module packages). It is correct that for all other utilityclasses
which are not formally part of the ND project, the extraction and
translation tools do not perform any migration.
However, the regular expression tool can "migrate" any arbitrary
file
(utility classes etc) to the degree that the regular expressionrules
correlate to the code present in the arbitrary file. So first andforemost,
if you have alot of spider code in your non-project classes youshould
consider using the regular expression tool and if warranted adding
additional rules to reduce the amount of manual adjustments thatneed to be
made. I can stress this enough. We can even help you write theregular
expression rules if you simply identify the code pattern you wish to
convert. Just because there is not already a regular expressionrule to
match your need does not mean it can't be written. We have notnearly
exhausted the possibilities.
For example if you say, we need to convert
CSpider.getDataObject("X");
To
RequestManager.getRequestContext().getModelManager().getModel(XModel.class);
Maybe we or somebody else in the list can help write that regularexpression if it has not already been written. For instance in thelast
updated spider2jato.xml file there is already aCSpider.getCommonPage("X")
rule:
<!--getPage to getViewBean-->
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[CSpider[.\s]*getPage[\s]*\(\"([^"]*)\"]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[CSpider[.\s]*getPage[\s]*\(\"([^"]*)\"]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[getViewBean($1ViewBean.class]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
Following this example a getDataObject to getModel would look
like this:
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[CSpider[.\s]*getDataObject[\s]*\(\"([^"]*)\"]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[CSpider[.\s]*getDataObject[\s]*\(\"([^"]*)\"]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[getModel($1Model.class]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
In fact, one migration developer already wrote that rule andsubmitted it
for inclusion in the basic set. I will post another upgrade to thebasic
regular expression rule set, look for a "file uploaded" posting.Also,
please consider contributing any additional generic rules that youhave
written for inclusion in the basic set.
Please not, that in some cases (Utility classes in particular)
the rule
application may be more effective as TWO sequention rules ratherthan one
monolithic rule. Again using the example above, it will convert
CSpider.getDataObject("Foo");
To
getModel(FooModel.class);
Now that is the most effective conversion for that code if that
code is in
a page or data object class file. But if that code is in a Utilityclass you
really want:
>
RequestManager.getRequestContext().getModelManager().getModel(FooModel.class
So to go from
getModel(FooModel.class);
To
RequestManager.getRequestContext().getModelManager().getModel(FooModel.class
You would apply a second rule AND you would ONLY run this rule
against
your utility classes so that you would not otherwise affect yourViewBean
and Model classes which are completely fine with the simplegetModel call.
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[getModel\(]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[getModel\(]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[RequestManager.getRequestContext().getModelManager().getModel(]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
A similer rule can be applied to getSession and other CSpider APIcalls.
For instance here is the rule for converting getSession calls toleverage
the RequestManager.
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[getSession\(\)\.]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[getSession\(\)\.]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[RequestManager.getSession().]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
----- Original Message -----
From: "Matthew Stevens" <matthew.stevens@e...>
Sent: Tuesday, August 07, 2001 12:56 PM
Subject: RE: [iPlanet-JATO] Use Of models in utility classes
Namburi,
I will post a document to the group site this evening which has
the
details
on various tactics of migrating these type of utilities.
Essentially,
you
either need to convert these utilities to Models themselves or
keep the
utilities as is and simply use the
RequestManager.getRequestContext.getModelManager().getModel()
to statically access Models.
For CSpSelect.executeImmediate() I have an example of customhelper
method
as a replacement whicch uses JDBC results instead of
CSpDBResult.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100208071048">vnamboori@y...</a>]
Sent: Tuesday, August 07, 2001 3:24 PM
Subject: [iPlanet-JATO] Use Of models in utility classes
Hi All,
In the present ND project we have lots of utility classes.
These
classes in diffrent directory. Not part of nd pages.
In these classes we access the dataobjects and do themanipulations.
So we access dataobjects directly like
CSpider.getDataObject("do....");
and then execute it.
Since the migration tool does not do much of conversion forthese
utilities we have to do manually.
My question is Can we access the the models in the postmigration
sameway or do we need requestContext?
We have lots of utility classes which are DataObjectintensive. Can
someone suggest a better way to migrate this kind of code.
Thanks
Namburi
[email protected]
[email protected]
[Non-text portions of this message have been removed]
[email protected]
[email protected]Namburi,
When you said you used the Reg Exp tool, did you use it only as
preconfigured by the iMT migrate application wizard?
Because the default configuration of the regular expression tool will only
target the files in your ND project directories. If you wish to target
classes outside of the normal directory scope, you have to either modify the
"Source Directory" property OR create another instance of the regular
expression tool. See the "Tool" menu in the iMT to create additional tool
instances which can each be configured to target different sets of files
using different sets of rules.
Usually, I utilize 3 different sets of rules files on a given migration:
spider2jato.xml
these are the generic conversion rules (but includes the optimized rules for
ViewBean and Model based code, i.e. these rules do not utilize the
RequestManager since it is not needed for code running inside the ViewBean
or Model classes)
I run these rules against all files.
See the file download section of this forum for periodic updates to these
rules.
nonProjectFileRules.xml
these include rules that add the necessary
RequestManager.getRequestContext(). etc prefixes to many of the common
calls.
I run these rules against user module and any other classes that do not are
not ModuleServlet, ContainerView, or Model classes.
appXRules.xml
these rules include application specific changes that I discover while
working on the project. A common thing here is changing import statements
(since the migration tool moves ND project code into different jato
packaging structure, you sometime need to adjust imports in non-project
classes that previously imported ND project specific packages)
So you see, you are not limited to one set of rules at all. Just be careful
to keep track of your backups (the regexp tool provides several options in
its Expert Properties related to back up strategies).
----- Original Message -----
From: <vnamboori@y...>
Sent: Wednesday, August 08, 2001 6:08 AM
Subject: [iPlanet-JATO] Re: Use Of models in utility classes - Pease don't
forget about the regular expression potential
Thanks Matt, Mike, Todd
This is a great input for our migration. Though we used the existing
Regular Expression Mapping tool, we did not change this to meet our
own needs as mentioned by Mike.
We would certainly incorporate this to ease our migration.
Namburi
--- In iPlanet-JATO@y..., "Todd Fast" <toddwork@c...> wrote:
All--
Great response. By the way, the Regular Expression Tool uses thePerl5 RE
syntax as implemented by Apache OROMatcher. If you're doing lotsof these
sorts of migration changes manually, you should definitely buy theO'Reilly
book "Mastering Regular Expressions" and generate some rules toautomate the
conversion. Although they are definitely confusing at first,regular
expressions are fairly easy to understand with some documentation,and are
superbly effective at tackling this kind of migration task.
Todd
----- Original Message -----
From: "Mike Frisino" <Michael.Frisino@S...>
Sent: Tuesday, August 07, 2001 5:20 PM
Subject: Re: [iPlanet-JATO] Use Of models in utility classes -Pease don't
forget about the regular expression potential
Also, (and Matt's document may mention this)
Please bear in mind that this statement is not totally correct:
Since the migration tool does not do much of conversion for
these
utilities we have to do manually.Remember, the iMT is a SUITE of tools. There is the extractiontool, and
the translation tool, and the regular expression tool, and severalother
smaller tools (like the jar and compilation tools). It is correctto state
that the extraction and translation tools only significantlyconvert the
primary ND project objects (the pages, the data objects, and theproject
classes). The extraction and translation tools do minimumtranslation of the
User Module objects (i.e. they repackage the user module classes inthe new
jato module packages). It is correct that for all other utilityclasses
which are not formally part of the ND project, the extraction and
translation tools do not perform any migration.
However, the regular expression tool can "migrate" any arbitrary
file
(utility classes etc) to the degree that the regular expressionrules
correlate to the code present in the arbitrary file. So first andforemost,
if you have alot of spider code in your non-project classes youshould
consider using the regular expression tool and if warranted adding
additional rules to reduce the amount of manual adjustments thatneed to be
made. I can stress this enough. We can even help you write theregular
expression rules if you simply identify the code pattern you wish to
convert. Just because there is not already a regular expressionrule to
match your need does not mean it can't be written. We have notnearly
exhausted the possibilities.
For example if you say, we need to convert
CSpider.getDataObject("X");
To
RequestManager.getRequestContext().getModelManager().getModel(XModel.class);
Maybe we or somebody else in the list can help write that regularexpression if it has not already been written. For instance in thelast
updated spider2jato.xml file there is already aCSpider.getCommonPage("X")
rule:
<!--getPage to getViewBean-->
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[CSpider[.\s]*getPage[\s]*\(\"([^"]*)\"]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[CSpider[.\s]*getPage[\s]*\(\"([^"]*)\"]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[getViewBean($1ViewBean.class]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
Following this example a getDataObject to getModel would look
like this:
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[CSpider[.\s]*getDataObject[\s]*\(\"([^"]*)\"]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[CSpider[.\s]*getDataObject[\s]*\(\"([^"]*)\"]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[getModel($1Model.class]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
In fact, one migration developer already wrote that rule andsubmitted it
for inclusion in the basic set. I will post another upgrade to thebasic
regular expression rule set, look for a "file uploaded" posting.Also,
please consider contributing any additional generic rules that youhave
written for inclusion in the basic set.
Please not, that in some cases (Utility classes in particular)
the rule
application may be more effective as TWO sequention rules ratherthan one
monolithic rule. Again using the example above, it will convert
CSpider.getDataObject("Foo");
To
getModel(FooModel.class);
Now that is the most effective conversion for that code if that
code is in
a page or data object class file. But if that code is in a Utilityclass you
really want:
>
RequestManager.getRequestContext().getModelManager().getModel(FooModel.class
So to go from
getModel(FooModel.class);
To
RequestManager.getRequestContext().getModelManager().getModel(FooModel.class
You would apply a second rule AND you would ONLY run this rule
against
your utility classes so that you would not otherwise affect yourViewBean
and Model classes which are completely fine with the simplegetModel call.
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[getModel\(]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[getModel\(]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[RequestManager.getRequestContext().getModelManager().getModel(]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
A similer rule can be applied to getSession and other CSpider APIcalls.
For instance here is the rule for converting getSession calls toleverage
the RequestManager.
<mapping-rule>
<mapping-rule-primarymatch>
<![CDATA[getSession\(\)\.]]>
</mapping-rule-primarymatch>
<mapping-rule-replacement>
<mapping-rule-match>
<![CDATA[getSession\(\)\.]]>
</mapping-rule-match>
<mapping-rule-substitute>
<![CDATA[RequestManager.getSession().]]>
</mapping-rule-substitute>
</mapping-rule-replacement>
</mapping-rule>
----- Original Message -----
From: "Matthew Stevens" <matthew.stevens@e...>
Sent: Tuesday, August 07, 2001 12:56 PM
Subject: RE: [iPlanet-JATO] Use Of models in utility classes
Namburi,
I will post a document to the group site this evening which has
the
details
on various tactics of migrating these type of utilities.
Essentially,
you
either need to convert these utilities to Models themselves or
keep the
utilities as is and simply use the
RequestManager.getRequestContext.getModelManager().getModel()
to statically access Models.
For CSpSelect.executeImmediate() I have an example of customhelper
method
as a replacement whicch uses JDBC results instead of
CSpDBResult.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100208071048">vnamboori@y...</a>]
Sent: Tuesday, August 07, 2001 3:24 PM
Subject: [iPlanet-JATO] Use Of models in utility classes
Hi All,
In the present ND project we have lots of utility classes.
These
classes in diffrent directory. Not part of nd pages.
In these classes we access the dataobjects and do themanipulations.
So we access dataobjects directly like
CSpider.getDataObject("do....");
and then execute it.
Since the migration tool does not do much of conversion forthese
utilities we have to do manually.
My question is Can we access the the models in the postmigration
sameway or do we need requestContext?
We have lots of utility classes which are DataObjectintensive. Can
someone suggest a better way to migrate this kind of code.
Thanks
Namburi
[email protected]
[email protected]
[Non-text portions of this message have been removed]
[email protected]
[email protected] -
Re: [iPlanet-JATO] Use Of models in utility classes
Hi Matt,
Sounds like some of the stuff we need to migrate has a lot in common with
Namburi's project.
I would be very keen to get hold of a copy of the 'tactic' document you
mention below, as well as the sample code you mention to replace CspDBResult
stuff with JDBC results.
Thanks in advance,
Phil
----- Original Message -----
From: Matthew Stevens <matthew.stevens@E...>
Sent: Wednesday, August 08, 2001 7:56 AM
Subject: RE: [iPlanet-JATO] Use Of models in utility classes
Namburi,
I will post a document to the group site this evening which has thedetails
on various tactics of migrating these type of utilities. Essentially, you
either need to convert these utilities to Models themselves or keep the
utilities as is and simply use the
RequestManager.getRequestContext.getModelManager().getModel()
to statically access Models.
For CSpSelect.executeImmediate() I have an example of custom helper method
as a replacement whicch uses JDBC results instead of CSpDBResult.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100253094145066046167121181">vnamboori@y...</a>]
Sent: Tuesday, August 07, 2001 3:24 PM
Subject: [iPlanet-JATO] Use Of models in utility classes
Hi All,
In the present ND project we have lots of utility classes. These
classes in diffrent directory. Not part of nd pages.
In these classes we access the dataobjects and do the manipulations.
So we access dataobjects directly like
CSpider.getDataObject("do....");
and then execute it.
Since the migration tool does not do much of conversion for these
utilities we have to do manually.
My question is Can we access the the models in the post migration
sameway or do we need requestContext?
We have lots of utility classes which are DataObject intensive. Can
someone suggest a better way to migrate this kind of code.
Thanks
Namburi
[email protected]
[email protected]Hi Matt,
Sounds like some of the stuff we need to migrate has a lot in common with
Namburi's project.
I would be very keen to get hold of a copy of the 'tactic' document you
mention below, as well as the sample code you mention to replace CspDBResult
stuff with JDBC results.
Thanks in advance,
Phil
----- Original Message -----
From: Matthew Stevens <matthew.stevens@E...>
Sent: Wednesday, August 08, 2001 7:56 AM
Subject: RE: [iPlanet-JATO] Use Of models in utility classes
Namburi,
I will post a document to the group site this evening which has thedetails
on various tactics of migrating these type of utilities. Essentially, you
either need to convert these utilities to Models themselves or keep the
utilities as is and simply use the
RequestManager.getRequestContext.getModelManager().getModel()
to statically access Models.
For CSpSelect.executeImmediate() I have an example of custom helper method
as a replacement whicch uses JDBC results instead of CSpDBResult.
matt
-----Original Message-----
From: vnamboori@y... [mailto:<a href="/group/SunONE-JATO/post?protectID=081071113213093190112061186248100253094145066046167121181">vnamboori@y...</a>]
Sent: Tuesday, August 07, 2001 3:24 PM
Subject: [iPlanet-JATO] Use Of models in utility classes
Hi All,
In the present ND project we have lots of utility classes. These
classes in diffrent directory. Not part of nd pages.
In these classes we access the dataobjects and do the manipulations.
So we access dataobjects directly like
CSpider.getDataObject("do....");
and then execute it.
Since the migration tool does not do much of conversion for these
utilities we have to do manually.
My question is Can we access the the models in the post migration
sameway or do we need requestContext?
We have lots of utility classes which are DataObject intensive. Can
someone suggest a better way to migrate this kind of code.
Thanks
Namburi
[email protected]
[email protected] -
Is there a Java utility class to help with data management in a desktop UI?
Is there a Java utility class to help with data management in a desktop UI?
I am writing a UI to configure a network device that will be connected to the serial port of the computer while it is being configured. There is no web server or database for my application. The UI has a large number of fields (50+) spread across 16 tabs. I will write the UI in Java FX. It should run inside the browser when launched, and issue commands to the network device through the serial port. A UI has several input fields spread across tabs and one single Submit button. If a field is edited, and the submit button clicked, it issues a command and sends the new datum to the device, retrieves current value and any errors. so if input field has bad data, it is indicated for example, the field has a red border.
Is there a standard design pattern or Java utility class to accomplish the frequently encountered, 'generic' parts of this scenario? lazy loading, submitting only what fields changed, displaying what fields have errors etc. (I dont want to reinvent the wheel if it is already there). Otherwise I can write such a class and share it back here if it is useful.
someone recommended JGoodies Bindings for Swing - will this work well and in FX?Many thanks for the reply.
In the servlet create an Arraylist and in th efor
loop put the insances of the csqabean in this
ArrayList. Exit the for loop and then add the
ArrayList as an attribute to the session.I am making the use of Vector and did the same thing as u mentioned.I am using scriplets...
>
In the jsp retrieve the array list from the session
and in a for loop step through the ArrayList
retrieving each CourseSectionQABean and displaying.
You can do this in a scriptlet but should also check
out the jstl tags.I am able to remove this problem.Thanks again for the suggestion.
AS -
Accessing utility classes from ebj
I have a session bean trying to access a utility class in the lib directory (same
directory as weblogic.jar). I have packaged it into a jar file and set the classpath
pointing to the file in the startWeblogic.cmd file. I compiled and depolyed the session
bean and it runs fine until it starts to access the class. I got NoClassFoundException.
I have tried to shut down and restart the server without any success. Anyone can
help me this this?
I know I can package the utility into the same jar as my ejb. But I don't want to
do it because it is going to be everywhere. What is the right way of doing it?
Thanks in advance.
L.W.XuRob,
You are right.
Thanks a lot.
L.W.X.
Rob Woollen <[email protected]> wrote:
>
>
If it's in the server classpath, the ejb will have no problem finding it.
Either you have a typo and the class is not in the classpath. You can prove
this by running
javap on the class using the same classpath as your startWebLogic script.
Or, as I suggested in the last response, it's not really standalone. The
jar probably has a
dependence on some classes in the ejb.jar.
-- Rob
"L. W. Xu" wrote:
Rob,
It is a standalone generic jar which has some classes in it. The ejb justcan't find
it.
I have a simple java program which uses it and it runs fine.
Thanks.
L. W. Xu
Rob Woollen <[email protected]> wrote:
If your utility.jar is standalone, then your approach is fine. However,
it sounds like it
is referencing a class that's only
available in your ejb.jar. That won't work.
-- Rob
"L. W. Xu" wrote:
I have a session bean trying to access a utility class in the lib directory(same
directory as weblogic.jar). I have packaged it into a jar file and
set
the classpath
pointing to the file in the startWeblogic.cmd file. I compiled and
depolyed
the session
bean and it runs fine until it starts to access the class. I got NoClassFoundException.
I have tried to shut down and restart the server without any success.Anyone can
help me this this?
I know I can package the utility into the same jar as my ejb. But I
don't
want to
do it because it is going to be everywhere. What is the right way of
doing
it?
Thanks in advance.
L.W.Xu--
AVAILABLE NOW!: Building J2EE Applications & BEA WebLogic Server
by Michael Girdley, Rob Woollen, and Sandra Emerson
http://learnWebLogic.com
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
If your utility.jar is standalone, then your approach is fine. However,
it sounds like it is referencing a class that's only
<br>available in your ejb.jar. That won't work.
<p>-- Rob
<p>"L. W. Xu" wrote:
<blockquote TYPE=CITE>I have a session bean trying to access a utility
class in the lib directory (same
<br>directory as weblogic.jar). I have packaged it into a jar file and
set the classpath
<br>pointing to the file in the startWeblogic.cmd file. I compiled and
depolyed the session
<br>bean and it runs fine until it starts to access the class. I gotNoClassFoundException.
<br>I have tried to shut down and restart the server without any success.
Anyone can
<br>help me this this?
<p>I know I can package the utility into the same jar as my ejb. ButI
don't want to
<br>do it because it is going to be everywhere. What is the right wayof
doing it?
<p>Thanks in advance.
<p>L.W.Xu</blockquote>
<pre>--
AVAILABLE NOW!: Building J2EE Applications & BEA WebLogic Server
by Michael Girdley, Rob Woollen, and Sandra Emerson
http://learnWebLogic.com</pre>
</html>
AVAILABLE NOW!: Building J2EE Applications & BEA WebLogic Server
by Michael Girdley, Rob Woollen, and Sandra Emerson
http://learnWebLogic.com
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
If it's in the server classpath, the ejb will have no problem finding it.
<p>Either you have a typo and the class is not in the classpath.
You can prove this by running javap on the class using the same classpath
as your startWebLogic script.
<p>Or, as I suggested in the last response, it's not really standalone.
The jar probably has a dependence on some classes in the ejb.jar.
<p>-- Rob
<br>
<p>"L. W. Xu" wrote:
<blockquote TYPE=CITE>Rob,
<p>It is a standalone generic jar which has some classes in it. The ejb
just can't find
<br>it.
<p>I have a simple java program which uses it and it runs fine.
<p>Thanks.
<p>L. W. Xu
<p>Rob Woollen <[email protected]> wrote:
<br>>
<br>>
<br>>If your utility.jar is standalone, then your approach is fine.
However,
<br>>it sounds like it
<br>>is referencing a class that's only
<br>>available in your ejb.jar. That won't work.
<br>>
<br>>-- Rob
<br>>
<br>>"L. W. Xu" wrote:
<br>>
<br>>> I have a session bean trying to access a utility class in the lib
directory
<br>>(same
<br>>> directory as weblogic.jar). I have packaged it into a jar file and
set
<br>>the classpath
<br>>> pointing to the file in the startWeblogic.cmd file. I compiled and
depolyed
<br>>the session
<br>>> bean and it runs fine until it starts to access the class. I got
NoClassFoundException.
<br>>> I have tried to shut down and restart the server without any success.
<br>>Anyone can
<br>>> help me this this?
<br>>>
<br>>> I know I can package the utility into the same jar as my ejb. But
I don't
<br>>want to
<br>>> do it because it is going to be everywhere. What is the right way
of doing
<br>>it?
<br>>>
<br>>> Thanks in advance.
<br>>>
<br>>> L.W.Xu
<br>>
<br>>--
<br>>
<br>>----------------------------------------------------------------------
<br>>
<br>>AVAILABLE NOW!: Building J2EE Applications & BEA WebLogic Server
<br>>
<br>>by Michael Girdley, Rob Woollen, and Sandra Emerson
<br>>
<br>>http://learnWebLogic.com
<br>>
<br>>
<br>>
<br>>
<br>><!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<br>><html>
<br>>If your utility.jar is standalone, then your approach is fine.
However,
<br>>it sounds like it is referencing a class that's only
<br>><br>available in your ejb.jar. That won't work.
<br>><p>-- Rob
<br>><p>"L. W. Xu" wrote:
<br>><blockquote TYPE=CITE>I have a session bean trying to access a
utility
<br>>class in the lib directory (same
<br>><br>directory as weblogic.jar). I have packaged it into a jar file
and
<br>>set the classpath
<br>><br>pointing to the file in the startWeblogic.cmd file. I compiled
and
<br>>depolyed the session
<br>><br>bean and it runs fine until it starts to access the class.
I got NoClassFoundException.
<br>><br>I have tried to shut down and restart the server without any
success.
<br>>Anyone can
<br>><br>help me this this?
<br>><p>I know I can package the utility into the same jar as my ejb.
But I
<br>>don't want to
<br>><br>do it because it is going to be everywhere. What is the right
way of
<br>>doing it?
<br>><p>Thanks in advance.
<br>><p>L.W.Xu</blockquote>
<br>>
<br>><pre>--
<br>>
<br>>----------------------------------------------------------------------
<br>>
<br>>AVAILABLE NOW!: Building J2EE Applications & BEA WebLogic Server
<br>>
<br>>by Michael Girdley, Rob Woollen, and Sandra Emerson
<br>>
<br>>http://learnWebLogic.com"><a
href="http://learnWebLogic.com">http://learnWebLogic.com</a></A></pre>
<br>> </html>
<br>>
<br>></blockquote>
<pre>--
AVAILABLE NOW!: Building J2EE Applications & BEA WebLogic Server
by Michael Girdley, Rob Woollen, and Sandra Emerson
<A HREF="http://learnWebLogic.com">http://learnWebLogic.com</A></pre>
</html> -
Can I create a JTA EntityManagerFactory in a utility class in a .jar file?
I have utility classes in a .jar file inside of a .war file deployed in Glassfish 3.1. One of these utility classes, CredentialsUtil, needs to access a database. I can't inject an EntityManager into CredentialsUtil since it is not an EJB. (For security reasons I don't want to make CredentialsUtil an EJB. I want it to be a POJO.)
In CredentialsUtil I need an EntityManagerFactory that is connected to a datasource defined in Glassfish. Here is the line from CredentialsUtil.java and from the persistence.xml both of which will be in the util.jar file:
EntityManagerFactory emf = Persistence.createEntityManagerFactory("Credpu");
<persistence-unit name="Credpu" transaction-type="JTA">
I can't use RESOURCE_LOCAL since any changes to the datasource configuration must be done in Glassfish rather than changing persistence.xml.
(The transaction context is not important in CredentialsUtil. It will be called by a WS-Security handler which may not have a transaction context.)
Can I put the persistence.xml and the CredentialsUtil class that creates the EntityManagerFactory from it inside of the util.jar file (which will be in a .war), or do I have to move the class and a copy of the persistence.xml file out to the .war file? (I'll have to leave persistence.xml in the .jar file too since there are some @Entity in the .jar file. I don't know why but there are @Entity pojos in the .jar file.)
I'd like to use the existing persistence.xml, but if I can't is there is a way to create an EntityManagerFactory (or EntityManager) that gets its datasource directly from Glassfish, ignoring persistence.xml?
Thanks.Styles in Pages are saved in the documents (or templates). There is no easy method for adding a style to a built-in template (and it is strongly recommended that you do not tamper with them). You can open a built- in template, add your style and save it as a user template so that your new style will be standard in documents created from that template.
-
Using Async calls in a Util class
I have a Utility class that I want to put code in that I'm reusing over and over again. This includes Async.handleEvent calls. If I call an instance of the Util class from a [Test(async)] method, can I use the Async call in that other event?
When I tried this in my code, it said that it "Cannot add asynchronous functionality to methods defined by Test,Before or After that are not marked async" but my [Test] is marked as async. And when I was in the same class, I was able to have non-Test methods make Async calls.
Thanks for the help!
Mocked up Example (please note these are two separate files):
// Test.as
package
import TimerUtil;
public class Test
[Test(async)]
public function waitForTimer():void
TimerUtil.newTimer();
// TimerUtil.as
package
import flash.events.TimerEvent;
import flash.utils.Timer;
import org.flexunit.async.Async;
public class TimerUtil
private static var instance:TimerUtil;
private var timer:Timer;
private static const TIME_OUT:int = 1000;
public static function newTimer() : void
if (!instance) instance = new TimerUtil();
instance.timer = new Timer(1000, 5);
instance.timer.start();
instance.waitForFifthTick();
private function waitForFifthTick() : void
Async.handleEvent(this, instance.timer, TimerEvent.TIMER, handleTimerTick, TIME_OUT);
private function handleTimerTick ( evt:TimerEvent, eventObject:Object) : void
if ( timer.currentCount == 5 )
// We are at the Fifth click, move on.
else
Async.handleEvent(this, instance.timer, TimerEvent.TIMER, handleTimerTick, TIME_OUT);
Message was edited by: zyellowman2
I missed a comma. And a few "instance"sYes, you can put async calls in utility classes or wherever you want. That isn't the issue here though.
In your test you call TimerUtil.newTimer()
That code creates a timer and then returns. Then your test returns. At that moment, FlexUnit sees that your test has finished and that there are no outstanding registered asynchronous events so it declares the test a success. Then, a second later, your other method executes and tries to register an async call. FlexUnit has no idea what test this pertains to, or why this call is being made as it is no longer in the context of the original test, hence the message you are receiving that you can only using Async calls inside of a method marked with a Async... as, in FlexUnit's opion, the method that is executing this code no longer has anything to do with a test with an async param.
The best way to think about this is a chain that cannot be broken. As soon as a method finishes executing with, FlexUnit will declare it a success unless we are waiting on something else (an async event of some sort) That is what the Async syntax really does, it tells the framework not to declare this method a success just yet, and that there is something else we need to account for to make that decision.
So, right now, in your newTimer() you don't let the framework know that you will be waiting for an async event. Therefore, when that method and the test method is over, so is the test.
Mike -
Issue: Using utility class instance
Hi,
I need to use OIM APIs.
I am using Eclipse IDE and have made the settings accordingly.
I am able to connect successfully and also able to get the instance of factory class.
Also then I am able to fetch the instance of utility class, tcUserOperationsIntf.
But next when I am trying to call any method of this utility class using the instance, I am getting null pointer exception.
Kindly help.public class oimtest {
public tcUtilityFactory getUtilFacObject()throws Exception
try
ConfigurationClient.ComplexSetting config = ConfigurationClient.getComplexSettingByPath("Discovery.CoreServer");
final Hashtable env = config.getAllSettings();
tcUtilityFactory ioUtilityFactory;
System.out.println("1");
tcSignatureMessage mysign = tcCryptoUtil.sign("xelsysadm", "PrivateKey");
System.out.println("2");
ioUtilityFactory = new tcUtilityFactory(env,mysign);
System.out.println("3");
return ioUtilityFactory;
catch(Exception e)
System.out.println("Exception in establishing connection is: "+e);
return null;
public void mymethod()throws IOException, ServletException
String orgid = "Xellerate Users";
HashMap uidmap = new HashMap();
uidmap.put("Organizations.Organization Name",orgid);
int a=4;
Long userkey=new Long(a);
try
tcUtilityFactory ioUtilityFactory = this.getUtilFacObject();
System.out.println("4");
tcUserOperationsIntf userIntf=(tcUserOperationsIntf)ioUtilityFactory.getUtility("Thor.API.Operations.tcUserOperationsIntf");
System.out.println("6");
String s=userIntf.toString();
System.out.println("It is"+s);
userIntf.disableUser(userkey);
tcResultSet urset=userIntf.findUsers(uidmap);
System.out.println("7");
if(!urset.isEmpty())
int len =urset.getTotalRowCount();
System.out.println("length:"+ len);
catch(Exception ex){
System.out.println("Exception is: "+ex.getMessage());
System.out.println("Exception is: "+ex);
I am getting the following output when calling mymethod() from the main class-
1
2
3
4
log4j:WARN No appenders could be found for logger (XELLERATE.ACCOUNTMANAGEMENT).
log4j:WARN Please initialize the log4j system properly.
6
It isThor.API.Operations.tcUserOperationsClient@2f4b20
Exception is: null
Exception is: java.lang.NullPointerException -
Need info on Date Utility Classes
Hi Experts,
Can someone please suggest me some re-usable date utility classes which I can re-use in my application(preferably date utility classes provided by basis so I dont need to bother about package ) ? What I want to do is pretty simple: Read current date/current month/Year and do basic date calculations.
Best Regards,
Viqar Ali.Vijay,
I got a few classes(mostly BSP utility classes), but I could not use them due to package dependancy problems. Can somebody please suggest some date utility classes which I can use in my Web-Dynpro applications ?
Best Regards,
Viqar Ali. -
Referencing utility classes from a war file
How do you reference a utility class from a war file? I tried adding the class to the deployment plan descriptor, however I still get a ClassNotFoundException.
Thanks,
WillTo use the utility classes from a war you have to place them under the web-inf/classes directory.
webApplication(WAR directory)--->WEB-INF--> classes (put your utility classes in this directory) -
JavaDocError: Utility classes should not have a public or default construct
Hello all,
I am trying to comply with some check style errors that i am getting and i cannot seem to figure out what is going on. I have set all non-data members to private, except for call point public static void main(string[] args) and i am still getting this error. "Utility classes should not have a public or default constructor." I cannot figure out what is going on, any help would be greatly welcomed. My code is posted below.
public final class Main
* Constant Data Member: RECTANGLE
* Purpose: contains the constant string representing a rectangle.
* @deprecated RECTANGLE Representitive string value for a rectangle.
public static final String RECTANGLE = "rectangle";
* Constant Data Member: TRIANGLE
* Purpose: contains the constant string representing a triangle.
* @deprecated TRIANGLE Representitive string value for a triangle.
public static final String TRIANGLE = "triangle";
* Constant Data Member: REGEX_NUMBER_TEST
* Purpose: contains the constant for numerical test within regex method.
* @deprecated REGEX_NUMBER_TEST regex string for digit comparison.
public static final String REGEX_NUMBER_TEST = "^[0-9]+$";
* Constant Data Member: MAX_ARGUMENTS_RECTANGLE
* Purpose: contains the constant for the maximum number of allowed
* arguments coming in from the command line.
* @deprecated MAX_ARGUMENTS_RECTANGLE constant for rectangle argument.
* limit.
public static final int MAX_ARGUMENTS_RECTANGLE = 3;
* Constant Data Member: MAX_ARGUMENTS_TRIANGLE
* Purpose: contains the constant for the maximum number of allowed
* arguments coming in from the command line, in the case of a
* triangle object.
* @deprecated MAX_ARGUMENTS_TRIANGLE constant for triangle argument limit.
public static final int MAX_ARGUMENTS_TRIANGLE = 2;
* Method: main
* Purpose: Is the execution point for the program. It is in charge of
* initiating validation and the creation and application of
* objects and their related draw methods.
* @param args input from the user.
public static void main(final String[] args)
String objectType = null;
int width = 0;
int height = 0;
if(args.length > MAX_ARGUMENTS_RECTANGLE || args.length <
MAX_ARGUMENTS_TRIANGLE || (args.length == MAX_ARGUMENTS_TRIANGLE &&
!isTriangle(args[0])))
// fails
outputErrorMessage();
else
if ((isTriangle(args[0]) && args.length > MAX_ARGUMENTS_TRIANGLE) ||
(!isTriangle(args[0]) && args.length > MAX_ARGUMENTS_RECTANGLE))
// fails becuase triangle should only have one argument
outputErrorMessage();
else
// passes and proceed
objectType = args[0];
if (validNumber(args[1]))
width = Integer.parseInt(args[1]);
if(width == 0)
outputErrorMessage();
else
....Add a private constructor.
private Main() { }
...This way it will be not possible to create an instance because it is not needed to use its static members or methods.
ref : [http://www.javapractices.com/topic/TopicAction.do?Id=40]
Bye. -
Dear Gurus,
I am new to Java and working on a Java Web Application which is already running.
1)
I found that the util class methods are static also not Synchoronised.
I feel this is wrong because if any 2 user accesses the methods concurrently
then those 2 users will not get expected results.
2)
Basically servlets are not thread safe. Then how actually it serves different users who are accessing
concurrently without any issues.
Can any one please clarify me the doubts?
Thanks in advance
GoudhamYou can declare servlets to be multithreaded. Servlet
containers are supposed to be able to instanciate a
different instance of a servlet for every simultanious
request if you tell it to in the servler descriptor.
Tomcat does this, and I'm sure that WebLogic, BEA,
and the Sun on do as well. That way you don't have
to worry about multi-requests hitting one instance of
a servlet object. This does add more overhead, but
sometimes that's ok.To be more precise, you can declare servlets to be non-thread-safe (i.e. SingleThreadModel). This has the affect of preventing concurrent requests from being dispatched to the Servlet instance. Most (in my experience, all) Servlet containers provide the means by which you can set the maximum size of the instance pool for a SingleThreadModel servlet.
Your best bet is to make your Servlet classes stateless and therefore inherently thread safe. To do this, simply don't define any non-final static or non-static fields and never change the state of those fields). This gives you the greatest scalability. If you must, then have your Servlet implement SingleThreadModel and define an appropriately sized instance pool.
Of course this won't do anything directly to deal with helper classes and their thread safety issues.
Chuck
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