Optionally disable loading gradle from gradle wrapper

[snjeza]

Fixes #875
Requires eclipse-jdtls/eclipse.jdt.ls#1026

I have added two new properties: java.import.gradle.wrapper.enabled and java.import.gradle.version

Importing a gradle project works in the following way:

• if there is gradlew and java.gradle.wrapper.enabled=true (default), the gradle wrapper distribution will be used
• in the case that gradlew doesn't exist or java.import.gradle.wrapper.enabled=false, Java LS checks for the existence of the java.import.gradle.version property. If it exists, Java LS will use the required version
• if there's no java.import.gradle.version property, Java LS checks for existence of the GRADLE_HOME env variable or the GRADLE_HOME system property. If it exists, Java LS will use the GRADLE_HOME local installation,
• else Java LS will use default buildship version (5.0).

Signed-off-by: Snjezana Peco snjezana.peco@redhat.com

[fbricon]

I want to keep java.import.gradle.enabled

[fbricon]

java.import.gradle.wrapper.enabled

[fbricon]

java.import.gradle.version

[fbricon]

I think it makes more sense to check

• use wrapper if enabled and present
• else use gradle version if it is set and valid
• else fall back to gradle home
• else fall back to buildship default version

[snjeza]

@fbricon I have updated the PR.

[fbricon]

Gradle version, used if the gradle wrapper is missing or disabled.

[fbricon]

Gradle version, used if the gradle wrapper is missing or disabled.

[snjeza]

@fbricon I have updated the PR.