Download Eclipse For Gradle Project
Shanae Maerz
Eclipse does not automatically update the classpath, if the build.gradle file is updated.Select Gradle Refresh Gradle Project from the context menu of the project or from your build.gradle file for that.
To compile Android projects with the Eclipse IDE, you can use gradle-android-eclipse plug-in from -android-eclipse.Afterwards the Android project should compile in the Eclipse IDE and you can run the Gradle tasks via the Gradle Task view.
Another fundamental feature is the project synchronization. When modifying the build configuration, you can apply the changes by executing the Gradle > Refresh Gradle Project command from the context menu of the project node or the build script editor. Project synchronization even respects the customizations done in Gradle eclipse plugin configuration.
For instance, you can use this to define a custom name for your projects. It might come handy if other workspace project names overlap with the ones in your Gradle build. To do that, just paste the snippet below into your build script.
There are some cases where you might want to modify the classpath entries that Gradle auto-generates for you. For those times, you can add, remove or modify entries through eclipse.classpath.file.whenMerged. The example below shows how you can make the Eclipse compiler ignore optional warnings.
Regarding the task types, there are 3 options: show the task selectors, the project tasks, and all tasks. A task selector executes a task on the target project and on all subprojects that have the same task. On the command-line, the same thing happens when you run gradle build. A project task works on the target project only. This corresponds to the gradle :subproject:build command. The "Show all tasks" option makes the private tasks visible. The only particularity of a private task is that it has no group defined. You can list the private tasks by executing gradle tasks --all.
Gradle provides a fine-grained classpath separation when building a Java project. Each project has a collection of source sets, which are the sources that are built together. A source set defines different classpaths for compilation and execution of the code. These classpaths are fully user-configurable.
The Eclipse IDE defines one classpath per project, which means that mapping the Gradle source sets is challenging. Prior versions of Buildship ignored the problem altogether and merged all source sets into one classpath. This was insufficient for application frameworks like Spring Boot, where the configuration is loaded from the classpath.
Buildship development is coordinated on GitHub, using a ZenHub board. You can file new issues, add your ? to existing ones to help us prioritize, or submit pull requests to the project there. Talk to us on the Gradle forums if you want to take on a bigger task; a welcoming community is waiting to help you there.
The eclipse-wtp is automatically applied whenever the eclipse plugin is applied to a War or Ear project. For utility projects (i.e. Java projects used by other web projects), you need to apply the eclipse-wtp plugin explicitly.
The eclipse-wtp plugin generates all WTP settings files and enhances the .project file. If a Java or War is applied, .classpath will be extended to get a proper packaging structure for this utility library or web application project.
The Eclipse plugins allow you to customize the generated metadata files. The plugins provide a DSL for configuring model objects that model the Eclipse view of the project. These model objects are then merged with the existing Eclipse XML metadata to ultimately generate new metadata. The model objects provide lower level hooks for working with domain objects representing the file content before and after merging with the model configuration. They also provide a very low level hook for working directly with the raw XML for adjustment before it is persisted, for fine tuning and configuration that the Eclipse and Eclipse WTP plugins do not model.
The resulting .classpath file will only contain Gradle-generated dependency entries, but not any other dependency entries that may have been present in the original file. (In the case of dependency entries, this is also the default behavior.) Other sections of the .classpath file will be either left as-is or merged. The same could be done for the natures in the .project file:
The whenMerged hook allows to manipulate the fully populated domain objects. Often this is the preferred way to customize Eclipse files. Here is how you would export all the dependencies of an Eclipse project:
Eclipse defines only one classpath per project which implies limitations on how Gradle projects can be mapped.Eclipse 4.8 introduced the concept of test sources.This feature allows the Eclipse plugin to define better separation between test and non-test sources.
The Eclipse classpath consists of classpath entries: source directories, jar files, project dependencies, etc.Each classpath entry can have a list of classpath attributes, where the attributes are string key-value pairs.There are two classpath attribute relevant for test sources: test and without_test_code, both of which can have true or false as values.
Yes, you can keep automatic building enabled in Eclipse. Eclipse compiler (JDT) will compile classes in bin folder, as usual, while Gradle (driven by Buildship) will build artifacts in the build directory, but only when you explicitly run a Gradle task in the build group, either via command line or via the Gradle Task View in Eclipse. But you normally do not need to do that while developing and running your application within the IDE, as you usually would run it using Launch Configurations as you normally would do.
The real role of Buildship is to set up your Eclipse project so that its configuration is as much as possible adherent to what build.gradle says, so it will, among other things:
So my question is, does anyone know of some good resource which offers a how-to for converting an existing java project in Eclipse to compile using gradle. I also have some dependencies on other projects. The link to the tutorial I have given is not really helpful.
UPDATE:I can get gradle to work if my project doesn't have dependencies on other projects. However, if it does refer to some other project, I can't figure out how to reference another project? I have added the referenced project dir to repositories but I still get "class does not exist" errors. My gradle file is as below:
The option to specify a JDK location in the advanced options was only available in Buildship 1.x. It was removed in Buildship 2.x with the expectation that you will use the standard org.gradle.java.home property to set your JDK/JRE as that will cause both command line and Buildship to function the same. Details of this property are in the User Guide in the Build Environment section.
My experience has been pretty positive with it so far. For straight-up Java projects it works quite well. I am having some issues generating correct war files through Eclipse, while using the Gradle plugin, but gradle itself does it wonderfully. I am relatively new to gradle and the plugin though, so it could be something that I am missing.
I know this is an old question, but I still do not think it is possible to have Eclipse run a gradle build for you. The Spring Gradle plugin is a great start, if you use that, you can define an external tool builder to run gradle when you want. If you have lots of projects and all are being built with gradle, you can even have gradle add the capability to your eclipse projects for you. While this can be cleaned up, you can add something like this to your gradle build file:
This is the content of the file stored at the top of the directory hierarchy under: ./.externalToolBuilders/Gradle_Builder.launch. As defined here, this will only run after a "clean" [Gradle is more expensive time-wise than the native Java Builder, so continue to use that for auto-building]. Note: the file contents below also assumes that you are using "git" and the gradle wrapper. You see this on the ATTR_LOCATION value. Adjust as needed. One nice thing about this approach though is that you can have the gradle wrapper be any version of gradle you want, and then eclipse will use that version when it runs!
You can use the Gradle Eclipse plugin like gradle eclipse to generate an Eclipse project from the gradle project. It adds a lot of targets to the generated Eclipse projects and is highly customizable.
You can use Buildship as stated by FkYkko. However, one thing to keep in mind is that Ant tasks are considered first-class citizens in gradle. This means you can simply import an ant build script, referencing its tasks the same way you reference gradle tasks. Doing things this way allows you to simply use your ant tasks out of the box with gradle, without converting them to gradle tasks.
For example, say you have a build script named build.xml in the same directory as your build.gradle, and a task in build.xml named buildProj. You can import build.xml, and call build proj from build.gradle like this:
After successfully importing a Gradle project, the project is shown in the Gradle Tasks view. By right clicking on a certain Gradle task in the Gradle Tasks view, you can run the selected Gradle task.
I thought that just doing this when I used the Gradle Tasks view to run tasks the gradle wrapper would be used, but I was wrong. For example, the below image shows the output when I run the build task.
After those steps Buildship was still using the gradle local installation. So, I did this: repeated steps 1 and 2 above again, but before doing step 3, I manually deleted everything from the Eclipse workspace folder that was still referencing the deleted project.
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