Gradle + Eclipse plugin: Remove build folder from Eclipse project

By default Eclipse plugin does not add /build folder into ignored resources and that may cause /build folder to be validated. Then many warnings will appear in Markers tab of Eclipse. Beside that it may be performance problem.

UPDATE 2018-09-18

It seems there is much better and easier way now: ResourceFilter

Example on that page exactly fits, just replace “node_modules” by “build”, so it looks like:

apply plugin: 'java'
apply plugin: 'eclipse'

eclipse {
    project {
        resourceFilter {
            appliesTo = 'FOLDERS'
            type = 'EXCLUDE_ALL'
            matcher {
                id = 'org.eclipse.ui.ide.multiFilter'
                arguments = '1.0-name-matches-false-false-build'
            }
        }
    }
}

OUTDATED VERSION

I found almost suitable solution here: https://discuss.gradle.org/t/eclipse-pluging-adding-resource-filters/5408 Unfortunately it adds new filter into configuration during each ‘gradle eclipse’. Here is my fix for that situation:

eclipse.project.file.withXml { xmlProvider -> 
    Node project = xmlProvider.asNode() 
    Node node = project 
    
    if (node.filteredResources.isEmpty()) { 
        node = node.appendNode('filteredResources') 
    } else { 
        node = node.filteredResources[0] 
    } 
    
    if (!node.filter.any {it.id[0].value()[0]=='1447321705713'}) { 
        Node filter = node.appendNode('filter') 
        filter.appendNode('id', '1447321705713') 
        filter.appendNode('name', '') 
        filter.appendNode('type', 10) 

        Node matcher = filter.appendNode('matcher') 
        matcher.appendNode('id', 'org.eclipse.ui.ide.multiFilter') 
        matcher.appendNode('arguments', '1.0-name-matches-false-false-build') 
    } 
}

So filter node is added only in case it does not already exists.

Tags: Gradle Java Eclipse

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Jaroslav Kuboš

Gradle + Eclipse plugin: Remove build folder from Eclipse project