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Merged
merged 11 commits into from
Jul 18, 2025
Merged

LombokValueToRecord should rewrite method references too #469

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038637c
try to rewrite method references
holgpar May 1, 2024
6047491
Merge branch 'main' into main
timtebeek Apr 9, 2025
a878f6d
Apply suggestions from code review
timtebeek Jul 16, 2025
4004540
Merge branch 'main' into main
timtebeek Jul 17, 2025
5644f4b
Alter implementation and polish tests
timtebeek Jul 17, 2025
5e78969
Stop ignoring type validation issues
timtebeek Jul 17, 2025
905a26f
Also update method type
timtebeek Jul 17, 2025
dd7b274
Light polish
timtebeek Jul 18, 2025
93bb699
Minimize test
timtebeek Jul 18, 2025
ff1a26b
Fix annotation order
timtebeek Jul 18, 2025
e4af006
Pull up suppressions
timtebeek Jul 18, 2025
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33 changes: 33 additions & 0 deletions src/main/java/org/openrewrite/java/migrate/lombok/LombokValueToRecord.java
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Original file line number Diff line number Diff line change
Expand Up @@ -254,6 +254,39 @@ public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, Execu
);
}

@Override
public J.MemberReference visitMemberReference(J.MemberReference memberRef, ExecutionContext ctx) {
J.MemberReference memberReference = super.visitMemberReference(memberRef, ctx);

// Handle method references like a::getTest
Expression containing = memberReference.getContaining();
if (containing != null && containing.getType() instanceof JavaType.Class) {
JavaType.Class classType = (JavaType.Class) containing.getType();
String classFqn = classType.getFullyQualifiedName();

J.Identifier reference = memberReference.getReference();
String methodName = reference.getSimpleName();

String newSimpleName = getterMethodNameToFluentMethodName(methodName);
if (recordTypeToMembers.containsKey(classFqn) &&
methodName.startsWith(STANDARD_GETTER_PREFIX) &&
recordTypeToMembers.get(classFqn).contains(newSimpleName)) {

// Update the method type if present
JavaType.Method methodType = memberReference.getMethodType();
if (methodType != null) {
methodType = methodType.withName(newSimpleName);
}

return memberReference
.withReference(reference.withSimpleName(newSimpleName))
.withMethodType(methodType);
}
}

return memberReference;
}

private boolean isMethodInvocationOnRecordTypeClassMember(J.MethodInvocation methodInvocation) {
Expression expression = methodInvocation.getSelect();
if (!isClassExpression(expression)) {
Expand Down
55 changes: 46 additions & 9 deletions src/test/java/org/openrewrite/java/migrate/lombok/LombokValueToRecordTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -46,8 +46,6 @@ public void defaults(RecipeSpec spec) {
void convertOnlyValueAnnotatedClassWithoutDefaultValuesToRecord() {
//language=java
rewriteRun(
// TODO: find a way to please type validation so this workaround is not required anymore
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;
Expand Down Expand Up @@ -142,7 +140,6 @@ public String toString() {
void onlyRemoveAnnotationFromRecords() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;
Expand Down Expand Up @@ -185,7 +182,6 @@ public class B {
void innerRecordsNotStatic() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;
Expand Down Expand Up @@ -218,7 +214,6 @@ record B(
void interfaceIsImplementedThatDoesNotDefineFieldGetter() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;
Expand Down Expand Up @@ -248,13 +243,13 @@ public record A(
void plainLombokBuilder() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;

import lombok.Value;
import lombok.Builder;
import java.io.Serializable;

@Value
@Builder
Expand All @@ -266,6 +261,7 @@ public class A implements Serializable {
package example;

import lombok.Builder;
import java.io.Serializable;

@Builder
public record A(
Expand All @@ -274,7 +270,50 @@ public record A(
"""
)
);
}

@Test
@Issue("https://github.com/openrewrite/rewrite-migrate-java/issues/449")
void methodReferences() {
//language=java
rewriteRun(
java(
"""
package example;

import lombok.Value;
import java.util.function.Supplier;

@Value
public class A {
String test;
}

class Using {
Supplier<String> usingMethodReference() {
A a = new A("foo");
return a::getTest;
}
}
""",
"""
package example;

import java.util.function.Supplier;

public record A(
String test) {
}

class Using {
Supplier<String> usingMethodReference() {
A a = new A("foo");
return a::test;
}
}
"""
)
);
}

@Nested
Expand Down Expand Up @@ -304,7 +343,7 @@ public A() {
void classWithFieldAnnotations() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
s -> s.typeValidationOptions(TypeValidation.all().identifiers(false)),
java(
"""
import com.fasterxml.jackson.annotation.JsonProperty;
Expand Down Expand Up @@ -433,7 +472,6 @@ public class A {
void nonStaticInnerClass() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;
Expand All @@ -455,7 +493,6 @@ class B {
void staticConstructor() {
//language=java
rewriteRun(
s -> s.typeValidationOptions(TypeValidation.none()),
java(
"""
package example;
Expand Down