I would like to understand what role the target folder plays in a SOA MDS project.
I am using JDeveloper and the target folder keeps getting populated with 2 .jar files. I am not sure where these jar files are coming from, but they contain old data which should be changed.
Can somebody please help me understand what is behind the making of these files?
The target folder is the default build output directory used by maven.
If working correctly, the builds should be generated there by maven using the configuration specified in the pom.xml file. In your case, the maven build might not have been run recently, which is why you see old content in the jars.
Have a look inside the pom.xml and see what build configuration has been specified there (it is likely to be no different from a SOA composite maven build file/pom file). If it's all built correctly, you should be able to deploy that jar directly to the MDS runtime (either manually or via maven).
In the pom file, you should be able to override most things there including the name, version, bundle type, target directory etc.
You can also use maven to keep track of your MDS changes - i.e. version it like any other build artifact/SOA composite. The versioned jars can also be uploaded to an artifact repository (such as nexus), in addition to being deployed to MDS runtime, so you have good level of traceability of MDS changes
PS -
This might help explain more: http://weblog.singhpora.com/2016/10/managing-shared-metadata-mds-in-ci.html
Related
How should I add JAR libraries to a WAR project in Eclipse without facing java.lang.ClassNotFoundException or java.lang.NoClassDefFoundError?
The CLASSPATH environment variable does not seem to work. In some cases we add JAR files to the Build Path property of Eclipse project to make the code compile. We sometimes need to put JAR files inside /WEB-INF/lib folder of the Java EE web application to make the code to run on classes inside that JAR.
I do not exactly understand why CLASSPATH does not work and in which cases we should add JARs to Build Path and when exactly those JARs should be placed in /WEB-INF/lib.
The CLASSPATH environment variable is only used by the java.exe command and even then only when the command is invoked without any of the -cp, -classpath, -jar arguments. The CLASSPATH environment variable is ignored by IDEs like Eclipse, Netbeans and IDEA. See also java.lang.ClassNotFoundException in spite of using CLASSPATH environment variable.
The Build Path is only for libraries which are required to get the project's code to compile. Manually placing JAR in /WEB-INF/lib, or setting the Deployment Assembly, or letting an external build system like Maven place the <dependency> as JAR in /WEB-INF/lib of produced WAR during the build, is only for libraries which are required to get the code to deploy and run on the target environment too. Do note that you're not supposed to create subfolders in /WEB-INF/lib. The JARs have to be placed in the root.
Some libraries are already provided by the target JEE server or servletcontainer, such as JSP, Servlet, EL, etc. So you do not need put JARs of those libraries in /WEB-INF/lib. Moreover, it would only cause classloading trouble. It's sufficient to (indirectly) specify them in Build Path only. In Eclipse, you normally do that by setting the Targeted Runtime accordingly. It will automatically end up in Build Path. You do not need to manually add them to Build Path. See also How do I import the javax.servlet / jakarta.servlet API in my Eclipse project?
Other libraries, usually 3rd party ones like Apache Commons, JDBC drivers and JEE libraries which are not provided by the target servletcontainer (e.g. Tomcat doesn't support many JEE libraries out the box such as JSF, JSTL, CDI, JPA, EJB, etc), need to end up in /WEB-INF/lib. You can just copy and paste the physical JAR files in there. You do not necessarily need to specify it in Build Path. Only perhaps when you already have it as User Library, but you should then use Deployment assembly setting for this instead. See also ClassNotFoundException when using User Libraries in Eclipse build path.
In case you're using Maven, then you need to make absolutely sure that you mark libraries as <scope>provided</scope> if those are already provided by the target runtime, such as JEE, Servlet, EL, etc in case you deploy to WildFly, TomEE, etc. This way they won't end up in /WEB-INF/lib of produced WAR (and potentially cause conflicts with server-bundled libraries), but they will end up in Eclipse's Build Path (and get the project's code to compile). See also How to properly install and configure JSF libraries via Maven?
Those JARs in the build path are referenced for the build (compile) process only. If you export your Web Application they are not included in the final WAR (give it a try).
If you need the JARs at runtime you must place them in WEB-INF/lib or the server classpath. Placing your JARs in the server classpath does only make sense if several WARs share a common code base and have the need to access shared objects (e.g. a Singleton).
If you are using Maven:
Open the project properties, and under Deployment Assembly click Add...
Then select Java Build Path Entries and select Maven Dependencies
Resolved by setting permissions.
Had related issue using PySpark and Oracle jdbc. The error does not state that the file cannot be accessed, just that the class cannot be loaded.
So if anyone still struggles, check the permissions. Some might find it obvious tho'.
I want to give the answer for the folowing link question ClassNotFoundException oracle.jdbc.driver.OracleDriver only in servlet, using Eclipse
Ans: In Myeclipse go to Server-->left click on Myeclipse Tomcat7-->Configure Server Connector-->(Expand)Myeclipse Tomcat7--> Paths-->Prepend to classpath-->Add jar (add oracle14 jar)-->ok
If you have a project that builds one project before building the next, but the next needs to know the 'path' of the first build, is it possible to get this?
For example:
Project A has Build Configuration A and Build Configuration B.
Build Configuration B has a dependency on Build Configuration A. From without the Build Configuration B it will need access to the path of Build Configuration A. Is there are a way to obtain this?
Most simple approach would be to define a custom checkout directory in the A and use the same hard-coded value in B.
If you use TeamCity snapshot or artifact dependencies, you can use %dep.btXXX.teamcity.build.checkoutDir% to get checkout directory of the dependency build. However, this will not work in 6.5.0-6.5.5 TeamCity versions, see details and workaround in the issue TW-18715.
However, you should really avoid accessing checkout directory of one build from another. If you need sources of A, you can checkout them in B; if you output of the A's build, then publishing the output as build's artifacts and then using TeamCity artifact dependencies is the way to go. In both cases additionally using TeamCity snapshot dependencies will ensure both builds use the same sources snapshot which is probably what you need.
If you have one agent, and only ever one agent then you could try and use the path from a previous build.
I wouldn't recommend doing this however because if you had two agents, or scaled up in the future to two agents, then it is possible your projects will be built on different agents; this would mean your dependency working directory won't be on the same machine, or it will be outdated as the latest was built elsewhere.
I assume you're after the path of the first build to get its output?
If so, the method we use to share dependencies between projects is to checkin the output from each project into our source control, then every project that requires the output simply has to check them out.
I just started working with ant a few days ago. Right now I have a general buildall.xml which should call each project's build.xml. Because some projects depend on each other, I need to rebuild some other projects which depend on it. This isn't a problem--I'm just setting the depends property of the target. However, ant is always building the dependencies, even when the files haven't changed.
Let's say project1 has no dependencies; project2 depends on project1; project3 depends on project1, 2; project4 depends on project1, 2, and 3; and so on.
I could hack a solution which looks at project K, and checks if project 1 .. project K have updated files using uptodate. If so, then run the target. This is messy and appears unnecessary.
What is the cleanest way to implement this?
EDIT: So I decided to just hack in a bunch of targets, "check_projectK" where it does the uptodate checks on all of its source files, its build file, and the build files of the 1 .. K-1 projects. Due to dependencies, this is always handled correctly. However, this is still a large amount of copy and paste for a large workspace. I will leave this open.
Short answer, ANT can't do it, not unless you have some kind of way to connect to your version control system and check if anything has changed (you are using source control right?). Ant doesn't know about when what the last time a file changed and then see if it matches with what was built; it doesn't have the concept of a dependency repository. The whole purpose of Ant is that it just builds.
The solution to your problem isn't Ant, it's Maven. Maven HAS a dependency repository. There's also a very nifty plugin for Maven used specifically with Flex appropriately called FlexMojos. By using this, Maven can know when something was last built because it's uploaded to the repository. Then your other projects can add it's dependencies and download the SWC needed.
On top of that, it mixes great with a continuous integration engine like Hudson, Bamboo and Teamcity, which builds a project every time a file has been committed to your source control system, and then updates all dependent projects automatically!
We're in the middle of changing from VSS to Subversion and we have a website project on our Subversion Repo. We've removed the Bin folder as it causes all kinds of chaotic tree conflicts since our development solution contains some Class Library projects the Website project depends on (set up as project references in our solution). We also have a couple of 3rd party library DLLs in the Website's Bin folder too.
The next phase of our project involves a designer modifying themes to our website. I'd like for him to be able to just open the Website project in VS 2005, modify the CSS files he needs to on his working copy, and test his files on his localhost. He'll need the most up-to-date DLL files for him to be able to do this.
Is there anyway to add the Bin folder DLLs to subversion, and configure TortoiseSVN or subversion so that we can commit our newest DLLs (project dependencies in developer's solution files) but ignore them on update (per client I guess)? It would also be handy to have our 3rd party website dependencies on Subversion too.
You should not put 3rd-party assemblies into the bin folder. In fact, you should assume that the bin folder will be emptied before each build. It is a place to put the output from a build, not a place to put inputs.
Put these binaries in to some other folder, maybe "3rdPartyAssemblies". Use a file reference to these files, and they'll be copied into the bin folder, as outputs.
Would it not be possible to structure it like this:
Trunk/
WebApp/
ClassLibrary1/
ClassLibrary2/
ClassLibrary3/
3rdPartyDlls/
build.bat
The web app is what pulls all the class libraries and the 3rd party dlls in to the WebApp's Bin folder (All of these will be referenced via relative links). You can then setup TortoiseSvn to call the build.bat file on update through client side hooks. You would also setup IIS on the designer's machine to point to the WebApp directory.
As other users have pointed out, you could use svn externals to pull in those enterprise wide class libraries.
What most everybody else has said regarding '3rdParty' is correct.
You may also consider svn:externals to pull in related directories including a '3rdParty' assemblies directory, or even output directories from builds that can be triggered by a check in to assure currency.
The approach we've taken is, rather than having the Libraries in the same solution, they have separate solutions and we (well, our Build server) compiles them and checks the compiled DLLs into sourcecontrol under "Dependencies" which is always mapped to C:\Dependencies on all developers machines. We then use file references to this folder from the website project.
Thi way you can give your designer the Website project along with a copy of C:\Dependencies and they'll be none-the-wiser =)
We don't sourcecontrol the bin-folder since it would be updated everytime you run a compile. Instead, we keep references to 3rd part libs in a separete folder that is under version control, that we have references to in our project.
With this setup and using "copy local = true", they are automatically added into bin upon compilation.
Secondly, we will only commit new binary files when we update the 3rd-part binaries.
This approach is also possible to do for your internal dlls, so that your designer can just compile his visual-studio-solution so taht any relevant dlls would be put into his bin-folder and hence, create a functional site locally on his machine.
background:Me and my coworkers are working on asp.net mvc project ... we have a computer that works as a server which is where the project will be stored on... each of us has a copy of the project and we got tortoise cvs set up.
questions:
when you want to commit something, what files exactly do you commit?.. asp.net reports many dll files, csproj files, cs and sln files that appear to be different from the server's.
Maybe my question is not the right one I should ask so I would appreciate some insight on whats the best approach for working in groups.
The basic csproj file should be committed whenever you add or remove things from the project, to ensure that the project has all the correct files. The solution (sln) is a good one to commit, for the same reason, although I've also seen it done without. You'd also want to commit any cs files, naturally, as they're the main focus of things.
DLL files should only be committed if they're outside references--internal dlls to your project can be ignored, as they'll be built by each computer in turn. You also want to avoid .user files as unnecessary. Ignore the 'bin' and 'obj' folders for each directory, when it comes to commits as well.
You really shouldn't check in anything that the project can generate itself. So no need to check in your bin or obj folders or anything like that, you also want to ignore any user preferences files.
This includes dlls, unless they are third party dlls, then you want to check them in to ensure everyone is working against the same version and this way you don't have to keep changing reference paths.
I don't work in asp.net, so I will respond generically.
We have a subversion code repository for our version system, cvs works well too. Developers retrieve all updated code from the repository, do work, make sure it's working correctly, do another get, re-compile, test, and then commit source code changes to the repository. On a regular basis you can have a tool or manually build the application from the repository, and deploy to a testing server. No compiled code should be placed in the repository.
-Jay
We use the following project structure in SVN (but this applies to CVS as well).
+ tags
+ branches
> trunk
+ build (build scripts)
+ lib (external libraries)
> src (source code)
>> Organization.App (solution name)
>> Organization.App.Core (code library)
+ Config
> Domain
> Model
> Persistence
> Queries
> Services
> Persistence
> Services
>> Organization.App.Web (mvc web app)
> Assets
+ Images
+ Scripts
+ Stylesheets
+ Controllers
+ Views
+ ViewModels
We put all our 3rd party dependencies into the lib folder. Including MVC, which can be bin deployed. See this article by Phil Haack. So when a new developer comes online all they have to do it check out the trunk, and they should have everything they need to get going. Using a CI server is a cinch because all of the projects dependencies are encapsulated by the lib folder and all of the visual studio projects make reference to those dll's in that lib folder.
Does that make sense?
Never mind the core folder and the web folder. That's just how we structure our projects within the solution. But that's a whole other conversation. :)
We keep everything except the BIN/OBJ folders in SVN. We have all third party Libraries in a seperate folder that they are referenced from.
Kindness,
Dan
If you are using a database change management tool, such as Tarantino, then you will also want to check in SQL change scripts and/or populate scripts. We have a folder in our 'Core' solution where we keep these, ie 'Core/Database/Updates'. We use SQL Compare to find changes in our database then we check in those SQL change scripts so that other developers can just run them locally. We have a nant task setup to call on Tarantino to sync up the other build environments (Dev, QA) and run any new change scripts.