Gradle: configure and register tasks lazily to improve build time.

Author: greenrobot-team

objectbox-java-api/build.gradle

@@ -5,16 +5,17 @@ plugins {
 
 // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
 // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     options.release.set(8)
 }
 
-task javadocJar(type: Jar, dependsOn: javadoc) {
+tasks.register('javadocJar', Jar) {
+    dependsOn javadoc
     archiveClassifier.set('javadoc')
     from 'build/docs/javadoc'
 }
 
-task sourcesJar(type: Jar) {
+tasks.register('sourcesJar', Jar) {
     from sourceSets.main.allSource
     archiveClassifier.set('sources')
 }

objectbox-java/build.gradle

@@ -6,7 +6,7 @@ plugins {
 
 // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
 // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     options.release.set(8)
 }
 
@@ -49,7 +49,7 @@ javadoc {
 }
 
 // Note: use packageJavadocForWeb to get as ZIP.
-task javadocForWeb(type: Javadoc) {
+tasks.register('javadocForWeb', Javadoc) {
     group = 'documentation'
     description = 'Builds Javadoc incl. objectbox-java-api classes with web tweaks.'
 
@@ -113,7 +113,8 @@ task javadocForWeb(type: Javadoc) {
     }
 }
 
-task packageJavadocForWeb(type: Zip, dependsOn: javadocForWeb) {
+tasks.register('packageJavadocForWeb', Zip) {
+    dependsOn javadocForWeb
     group = 'documentation'
     description = 'Packages Javadoc incl. objectbox-java-api classes with web tweaks as ZIP.'
 
@@ -127,12 +128,13 @@ task packageJavadocForWeb(type: Zip, dependsOn: javadocForWeb) {
     }
 }
 
-task javadocJar(type: Jar, dependsOn: javadoc) {
+tasks.register('javadocJar', Jar) {
+    dependsOn javadoc
     archiveClassifier.set('javadoc')
     from 'build/docs/javadoc'
 }
 
-task sourcesJar(type: Jar) {
+tasks.register('sourcesJar', Jar) {
     from sourceSets.main.allSource
     archiveClassifier.set('sources')
 }

objectbox-kotlin/build.gradle

@@ -10,7 +10,7 @@ plugins {
 
 // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
 // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     options.release.set(8)
 }
 
@@ -38,14 +38,14 @@ tasks.named("dokkaHtml") {
     }
 }
 
-task javadocJar(type: Jar) {
+tasks.register('javadocJar', Jar) {
     dependsOn tasks.named("dokkaHtml")
     group = 'build'
     archiveClassifier.set('javadoc')
     from "$javadocDir"
 }
 
-task sourcesJar(type: Jar) {
+tasks.register('sourcesJar', Jar) {
     group = 'build'
     archiveClassifier.set('sources')
     from sourceSets.main.allSource

objectbox-rxjava/build.gradle

@@ -5,7 +5,7 @@ plugins {
 
 // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
 // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     options.release.set(8)
 }
 
@@ -17,12 +17,13 @@ dependencies {
     testImplementation "org.mockito:mockito-core:$mockitoVersion"
 }
 
-task javadocJar(type: Jar, dependsOn: javadoc) {
+tasks.register('javadocJar', Jar) {
+    dependsOn javadoc
     archiveClassifier.set('javadoc')
     from 'build/docs/javadoc'
 }
 
-task sourcesJar(type: Jar) {
+tasks.register('sourcesJar', Jar) {
     archiveClassifier.set('sources')
     from sourceSets.main.allSource
 }

objectbox-rxjava3/build.gradle

@@ -11,7 +11,7 @@ plugins {
 
 // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
 // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     options.release.set(8)
 }
 
@@ -49,14 +49,14 @@ dependencies {
     testImplementation "org.mockito:mockito-core:$mockitoVersion"
 }
 
-task javadocJar(type: Jar) {
+tasks.register('javadocJar', Jar) {
     dependsOn tasks.named("dokkaHtml")
     group = 'build'
     archiveClassifier.set('javadoc')
     from "$javadocDir"
 }
 
-task sourcesJar(type: Jar) {
+tasks.register('sourcesJar', Jar) {
     group = 'build'
     archiveClassifier.set('sources')
     from sourceSets.main.allSource

tests/objectbox-java-test/build.gradle

@@ -1,7 +1,7 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
 
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
     // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
     options.release.set(8)

tests/test-proguard/build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'java-library'
 
 // Note: use release flag instead of sourceCompatibility and targetCompatibility to ensure only JDK 8 API is used.
 // https://docs.gradle.org/current/userguide/building_java_projects.html#sec:java_cross_compilation
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     options.release.set(8)
 }