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                                                    <td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.jboss.org/browse/AGDROID-659" style="color: #3b73af; text-decoration: none">Re: Spike : Evaluate Spring Gradle BOM plugin for Android Core use</a> </span> </td> 
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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0; padding-top: 10px"> <span class="diffcontext">I was testing the dependency management for andoid using the spring-dependency-management gradle plugin.<br><br>There are two scenarios that we want to cover:<br><br># Locking down (transitive) dependencies in our services (core, sync, keycloak...) which are all submodules of a common parent project<br># Giving users of the SDK a way lock their (transitive) dependencies to versions that we specify in a 'BOM' to avoid conflicts and multiple version of the same library.<br><br>I've tested scenario 1 and am currently setting up an environment that allows me to test 2.<br><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext">1) Locking down dependencies in our own services</span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext"><br><br>To achieve this we need to load the plugin in the parent gradle file and apply a 'dependencyManagement' section to all subprojects:<br><br>{code}<br>...<br>plugins {<br>&nbsp;&nbsp;&nbsp;&nbsp;id "io.spring.dependency-management" version "1.0.4.RELEASE"<br>}<br>...<br>subprojects {<br>&nbsp;&nbsp;&nbsp;&nbsp;apply plugin: 'io.spring.dependency-management'<br><br>&nbsp;&nbsp;&nbsp;&nbsp;dependencies {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dependency group: 'com.google.code.gson', name: 'gson', version: '2.7'<br>&nbsp;&nbsp;&nbsp;&nbsp;}<br>}<br>{code}<br><br>Since there is no inheritance of gradle build files we need to take the 'subprojects' approach. Now we can add dependencies in subprojects with:<br><br>{code}<br>compile group: 'com.google.code.gson', name: 'gson'<br>{code}<br><br>This will automatically pick the version specified in the dependencyManagement section of the parent project. This also works for transitive dependencies, e.g. if gson is included through another dependency.<br><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext">2) Giving users of the SDK a way to use our BOM</span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext"><br><br>This is useful for developers that depend on our SDK. It allows them to lock down versions of their dependencies and subdependencies to versions specified in a 'BOM' that we provide.<br><br>To do that the users has to include the spring-dependency-managenemt plugin in their app and define a 'dependencyManagenemt' section like this:<br><br>{code}<br>dependencyManagement {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;imports {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mavenBom '&lt;group and artifact of published aerogear-sdk-bom&gt;'<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>}<br>{code}<br><br>For this to work we need to publish a project calle aerogear-sdk-bom that cotains a pom.xml file with the dependencyManagement section.<br><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext">NOTE</span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext">: if we have a published aerogear-sdk-bom we can also use this to cover use case 1.<br><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext">NOTE</span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext">: the spring-dependency-management plugin does not allow to import a mavenBOM from a project location. It has to be published.<br><br>ping [~supittma] [~wtrocki] [~danielpassos]</span> </td> 
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