Pair on Optional

buildSrc/src/main/kotlin/io/spine/gradle/internal/deps.kt

@@ -98,6 +98,10 @@ object Versions {
     val animalSniffer    = "1.18"
     val apiguardian      = "1.1.0"
     val javaxAnnotation  = "1.3.2"
+    val klaxon           = "5.4"
+    val ouathJwt         = "3.10.3"
+    val bouncyCastlePkcs = "1.66"
+    val assertK          = "0.22"
 
     /**
      * Version of the SLF4J library.
@@ -159,7 +163,7 @@ object Build {
 
     object AutoService {
         val annotations = "com.google.auto.service:auto-service-annotations:${Versions.autoService}"
-        val processor = "com.google.auto.service:auto-service:${Versions.autoService}"
+        val processor   = "com.google.auto.service:auto-service:${Versions.autoService}"
     }
 }
 
@@ -168,6 +172,13 @@ object Gen {
     val javaxAnnotation = "javax.annotation:javax.annotation-api:${Versions.javaxAnnotation}"
 }
 
+object Publishing {
+    val klaxon           = "com.beust:klaxon:${Versions.klaxon}"
+    val oauthJwt         = "com.auth0:java-jwt:${Versions.ouathJwt}"
+    val bouncyCastlePkcs = "org.bouncycastle:bcpkix-jdk15on:${Versions.bouncyCastlePkcs}"
+    val assertK          = "com.willowtreeapps.assertk:assertk-jvm:${Versions.assertK}"
+}
+
 object Grpc {
     val core        = "io.grpc:grpc-core:${Versions.grpc}"
     val stub        = "io.grpc:grpc-stub:${Versions.grpc}"
@@ -275,6 +286,7 @@ object Deps {
     val test = Test
     val versions = Versions
     val scripts = Scripts
+    val publishing = Publishing
 }
 
 object DependencyResolution {

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -82,6 +82,7 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -129,6 +130,7 @@ fi
 if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath

gradlew.bat

@@ -84,6 +84,7 @@ set CMD_LINE_ARGS=%*
 
 set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
+
 @rem Execute Gradle
 "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
 

license-report.md

@@ -1,6 +1,6 @@
 
 
-# Dependencies of `io.spine:spine-client:1.5.27`
+# Dependencies of `io.spine:spine-client:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -406,12 +406,12 @@
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:45:57 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:03 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-core:1.5.27`
+# Dependencies of `io.spine:spine-core:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.code.findbugs **Name:** jsr305 **Version:** 3.0.2
@@ -777,12 +777,12 @@ This report was generated on **Mon Aug 31 12:45:57 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:45:57 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:03 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:spine-model-assembler:1.5.27`
+# Dependencies of `io.spine.tools:spine-model-assembler:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -1183,12 +1183,12 @@ This report was generated on **Mon Aug 31 12:45:57 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:45:58 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:04 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:spine-model-verifier:1.5.27`
+# Dependencies of `io.spine.tools:spine-model-verifier:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -1659,12 +1659,12 @@ This report was generated on **Mon Aug 31 12:45:58 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:45:59 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:04 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-server:1.5.27`
+# Dependencies of `io.spine:spine-server:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -2082,12 +2082,12 @@ This report was generated on **Mon Aug 31 12:45:59 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:45:59 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:04 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-testutil-client:1.5.27`
+# Dependencies of `io.spine:spine-testutil-client:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -2542,12 +2542,12 @@ This report was generated on **Mon Aug 31 12:45:59 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:46:01 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:06 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-testutil-core:1.5.27`
+# Dependencies of `io.spine:spine-testutil-core:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -3010,12 +3010,12 @@ This report was generated on **Mon Aug 31 12:46:01 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:46:02 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:07 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-testutil-server:1.5.27`
+# Dependencies of `io.spine:spine-testutil-server:1.5.28`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -3514,4 +3514,4 @@ This report was generated on **Mon Aug 31 12:46:02 EEST 2020** using [Gradle-Lic
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Aug 31 12:46:05 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Sep 01 23:59:08 EEST 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).

pom.xml

@@ -12,7 +12,7 @@ all modules and does not describe the project structure per-subproject.
 
 <groupId>io.spine</groupId>
 <artifactId>spine-core-java</artifactId>
-<version>1.5.27</version>
+<version>1.5.28</version>
 
 <inceptionYear>2015</inceptionYear>
 

server/src/main/java/io/spine/server/tuple/Pair.java

@@ -20,6 +20,7 @@
 
 package io.spine.server.tuple;
 
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import com.google.protobuf.Message;
 import io.spine.server.tuple.Element.AValue;
 import io.spine.server.tuple.Element.BValue;
@@ -59,27 +60,50 @@ private Pair(A a, B b) {
      * Creates a new pair of values.
      */
     public static <A extends Message, B extends Message> Pair<A, B> of(A a, B b) {
-        Pair<A, B> result = new Pair<>(checkNotNullOrEmpty(Pair.class, a),
-                                       checkNotNullOrEmpty(Pair.class, b));
+        A safeA = checkNotNullOrEmpty(a);
+        B safeB = checkNotNullOrEmpty(b);
+        Pair<A, B> result = new Pair<>(safeA, safeB);
         return result;
     }
 
     /**
      * Creates a pair with optionally present second value.
+     *
+     * @see #withOptional(Message, Optional)
      */
     public static <A extends Message, B extends Message>
     Pair<A, Optional<B>> withNullable(A a, @Nullable B b) {
-        checkNotNullOrEmpty(Pair.class, a);
-        checkNotEmpty(Pair.class, b);
+        checkNotNullOrEmpty(a);
+        checkNotEmpty(b);
         Pair<A, Optional<B>> result = new Pair<>(a, ofNullable(b));
         return result;
     }
 
+    /**
+     * Creates a pair with optionally present second value.
+     *
+     * @see #withNullable(Message, Message)
+     * @apiNote This method treats a special case of construction using already available
+     *         instance of {@code Optional}. This avoids unwrapping of {@code Optional} which would
+     *         have been required for passing an optional value to
+     *         {@link #withNullable(Message, Message)}.
+     */
+    public static <A extends Message, B extends Message>
+    Pair<A, Optional<B>> withOptional(
+            A a,
+            @SuppressWarnings("OptionalUsedAsFieldOrParameterType") /* see @apiNote */ Optional<B> b
+    ) {
+        checkNotNullOrEmpty(a);
+        checkNotNull(b);
+        Pair<A, Optional<B>> result = new Pair<>(a, b);
+        return result;
+    }
+
     /**
      * Creates a pair with the second element of a type descending from {@link Either}.
      */
     public static <A extends Message, B extends Either> Pair<A, B> withEither(A a, B b) {
-        checkNotNullOrEmpty(Pair.class, a);
+        checkNotNullOrEmpty(a);
         checkNotNull(b);
         Pair<A, B> result = new Pair<>(a, b);
         return result;
@@ -94,4 +118,14 @@ public A getA() {
     public B getB() {
         return value(this, 1);
     }
+
+    @CanIgnoreReturnValue
+    private static <M extends Message> M checkNotNullOrEmpty(M value) {
+        return checkNotNullOrEmpty(Pair.class, value);
+    }
+
+    @CanIgnoreReturnValue
+    private static <M extends Message> @Nullable M checkNotEmpty(@Nullable M value) {
+        return checkNotEmpty(Pair.class, value);
+    }
 }

server/src/main/java/io/spine/server/tuple/Quartet.java

@@ -20,6 +20,7 @@
 
 package io.spine.server.tuple;
 
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import com.google.protobuf.Message;
 import io.spine.server.tuple.Element.AValue;
 import io.spine.server.tuple.Element.BValue;
@@ -65,7 +66,7 @@ private Quartet(A a, B b, C c, D d) {
      */
     public static <A extends Message, B extends Message, C extends Message, D extends Message>
     Quartet<A, B, C, D> of(A a, B b, C c, D d) {
-        checkAllNotNullOrEmpty(Quartet.class, a, b, c, d);
+        checkAllNotNullOrEmpty(a, b, c, d);
         Quartet<A, B, C, D> result = new Quartet<>(a, b, c, d);
         return result;
     }
@@ -75,8 +76,8 @@ Quartet<A, B, C, D> of(A a, B b, C c, D d) {
      */
     public static <A extends Message, B extends Message, C extends Message, D extends Message>
     Quartet<A, B, C, Optional<D>> withNullable(A a, B b, C c, @Nullable D d) {
-        checkAllNotNullOrEmpty(Quartet.class, a, b, c);
-        checkNotEmpty(Quartet.class, d);
+        checkAllNotNullOrEmpty(a, b, c);
+        checkNotEmpty(d);
         Quartet<A, B, C, Optional<D>> result = new Quartet<>(a, b, c, ofNullable(d));
         return result;
     }
@@ -86,8 +87,8 @@ Quartet<A, B, C, Optional<D>> withNullable(A a, B b, C c, @Nullable D d) {
      */
     public static <A extends Message, B extends Message, C extends Message, D extends Message>
     Quartet<A, B, Optional<C>, Optional<D>> withNullable2(A a, B b, @Nullable C c, @Nullable D d) {
-        checkAllNotNullOrEmpty(Quartet.class, a, b);
-        checkAllNotEmpty(Quartet.class, c, d);
+        checkAllNotNullOrEmpty(a, b);
+        checkAllNotEmpty(c, d);
         Quartet<A, B, Optional<C>, Optional<D>> result =
                 new Quartet<>(a, b, ofNullable(c), ofNullable(d));
         return result;
@@ -99,8 +100,8 @@ Quartet<A, B, Optional<C>, Optional<D>> withNullable2(A a, B b, @Nullable C c, @
     public static <A extends Message, B extends Message, C extends Message, D extends Message>
     Quartet<A, Optional<B>, Optional<C>, Optional<D>>
     withNullable3(A a, @Nullable B b, @Nullable C c, @Nullable D d) {
-        checkNotNullOrEmpty(Quartet.class, a);
-        checkAllNotEmpty(Quartet.class, b, c, d);
+        checkNotNullOrEmpty(a);
+        checkAllNotEmpty(b, c, d);
         Quartet<A, Optional<B>, Optional<C>, Optional<D>> result =
                 new Quartet<>(a, ofNullable(b), ofNullable(c), ofNullable(d));
         return result;
@@ -125,4 +126,24 @@ public C getC() {
     public D getD() {
         return value(this, 3);
     }
+
+    @CanIgnoreReturnValue
+    private static <M extends Message> M checkNotNullOrEmpty(M value) {
+        return checkNotNullOrEmpty(Quartet.class, value);
+    }
+
+    @CanIgnoreReturnValue
+    private static <M extends Message> @Nullable M checkNotEmpty(@Nullable M value) {
+        return checkNotEmpty(Quartet.class, value);
+    }
+
+    @SuppressWarnings("OverloadedVarargsMethod") // to avoid repeated usage of this class name.
+    private static void checkAllNotNullOrEmpty(Message... values) {
+        checkAllNotNullOrEmpty(Quartet.class, values);
+    }
+
+    @SuppressWarnings("OverloadedVarargsMethod") // to avoid repeated usage of this class name.
+    private static void checkAllNotEmpty(Message... values) {
+        checkAllNotEmpty(Quartet.class, values);
+    }
 }