Replace Guava Optional with JDK Optional

.sdkmanrc

@@ -1,3 +1,3 @@
 # Enable auto-env through the sdkman_auto_env config
 # Add key=value pairs of SDKs to use below
-java=11.0.16-tem
+java=11.0.18-tem

build.gradle.kts

@@ -26,6 +26,7 @@ dependencies {
 
     testImplementation("org.junit.jupiter:junit-jupiter-api:latest.release")
     testImplementation("org.junit.jupiter:junit-jupiter-params:latest.release")
+    testImplementation("org.junit-pioneer:junit-pioneer:2.0.0")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:latest.release")
 
     testImplementation("org.openrewrite:rewrite-test")

src/main/java/org/openrewrite/java/migrate/guava/PreferJavaUtilOptionalOrElseNull.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2023 the original author or authors.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openrewrite.java.migrate.guava;
+
+import org.openrewrite.ExecutionContext;
+import org.openrewrite.Recipe;
+import org.openrewrite.java.JavaIsoVisitor;
+import org.openrewrite.java.JavaTemplate;
+import org.openrewrite.java.MethodMatcher;
+import org.openrewrite.java.search.UsesMethod;
+import org.openrewrite.java.search.UsesType;
+import org.openrewrite.java.tree.J;
+
+import java.time.Duration;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+public class PreferJavaUtilOptionalOrElseNull extends Recipe {
+    @Override
+    public String getDisplayName() {
+        return "Prefer `java.util.Optional#orElse(null)` over `com.google.common.base.Optional#orNull()`";
+    }
+
+    @Override
+    public String getDescription() {
+        return "Replaces `com.google.common.base.Optional#orNull()` with `java.util.Optional#orElse(null)`.";
+    }
+
+    @Override
+    public Duration getEstimatedEffortPerOccurrence() {
+        return Duration.ofMinutes(5);
+    }
+
+    @Override
+    public Set<String> getTags() {
+        return new HashSet<>(Arrays.asList("RSPEC-4738", "guava"));
+    }
+
+    @Override
+    protected UsesType<ExecutionContext> getApplicableTest() {
+        return new UsesType<>("com.google.common.base.Optional");
+    }
+
+    @Override
+    protected UsesMethod<ExecutionContext> getSingleSourceApplicableTest() {
+        return new UsesMethod<>("com.google.common.base.Optional orNull()");
+    }
+
+    @Override
+    protected JavaIsoVisitor<ExecutionContext> getVisitor() {
+        return new PreferJavaUtilOptionalOrElseNullVisitor();
+    }
+
+    private static class PreferJavaUtilOptionalOrElseNullVisitor extends JavaIsoVisitor<ExecutionContext> {
+        private static final MethodMatcher guavaCreateTempDirMatcher = new MethodMatcher("com.google.common.base.Optional orNull()");
+
+        @Override
+        public J.CompilationUnit visitCompilationUnit(J.CompilationUnit cu, ExecutionContext executionContext) {
+            J.CompilationUnit c = super.visitCompilationUnit(cu, executionContext);
+            maybeAddImport("java.util.Optional");
+            maybeRemoveImport("com.google.common.base.Optional");
+            return c;
+        }
+
+        @Override
+        public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext executionContext) {
+            J.MethodInvocation mi = super.visitMethodInvocation(method, executionContext);
+            if (guavaCreateTempDirMatcher.matches(mi)) {
+                return mi.withName(mi.getName().withSimpleName("orElse"))
+                        .withTemplate(JavaTemplate.builder(this::getCursor, "null").build(), mi.getCoordinates().replaceArguments());
+            }
+            return mi;
+        }
+    }
+}

src/main/resources/META-INF/rewrite/no-guava.yml

@@ -33,6 +33,7 @@ recipeList:
   - org.openrewrite.java.migrate.guava.NoGuavaSetsNewConcurrentHashSet
   - org.openrewrite.java.migrate.guava.NoGuavaSetsNewLinkedHashSet
   - org.openrewrite.java.migrate.guava.PreferJavaUtilFunction
+  - org.openrewrite.java.migrate.guava.PreferJavaUtilOptional
   - org.openrewrite.java.migrate.guava.PreferJavaUtilPredicate
   - org.openrewrite.java.migrate.guava.PreferJavaUtilSupplier
   - org.openrewrite.java.migrate.guava.PreferJavaUtilObjectsEquals
@@ -70,6 +71,34 @@ recipeList:
       oldFullyQualifiedTypeName: com.google.common.base.Function
       newFullyQualifiedTypeName: java.util.function.Function
 
+---
+type: specs.openrewrite.org/v1beta/recipe
+name: org.openrewrite.java.migrate.guava.PreferJavaUtilOptional
+displayName: Prefer `java.util.Optional`
+description: Prefer `java.util.Optional` instead of using `com.google.common.base.Optional`.
+tags:
+  - guava, RSPEC-4738
+recipeList:
+  - org.openrewrite.java.migrate.guava.PreferJavaUtilOptionalOrElseNull
+  - org.openrewrite.java.ChangeMethodName:
+      methodPattern: com.google.common.base.Optional absent()
+      newMethodName: empty
+  - org.openrewrite.java.ChangeMethodName:
+      methodPattern: com.google.common.base.Optional fromNullable(..)
+      newMethodName: ofNullable
+  - org.openrewrite.java.ChangeMethodName:
+      methodPattern: com.google.common.base.Optional or(com.google.common.base.Supplier)
+      newMethodName: orElseGet
+  - org.openrewrite.java.ChangeMethodName:
+      methodPattern: com.google.common.base.Optional or(..)
+      newMethodName: orElse
+  - org.openrewrite.java.ChangeMethodName:
+      methodPattern: com.google.common.base.Optional transform(com.google.common.base.Function)
+      newMethodName: map
+  - org.openrewrite.java.ChangeType:
+      oldFullyQualifiedTypeName: com.google.common.base.Optional
+      newFullyQualifiedTypeName: java.util.Optional
+
 ---
 type: specs.openrewrite.org/v1beta/recipe
 name: org.openrewrite.java.migrate.guava.PreferJavaUtilPredicate