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Detect config props using builder pattern and generics

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See gh-19099
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如梦技术
2019-11-22 18:06:31 +08:00
committed by Stephane Nicoll
parent 4fb0a2b8ba
commit 743f4a4cb1
4 changed files with 120 additions and 2 deletions
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24
spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/TypeElementMembers.java
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@@ -28,8 +28,10 @@ import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.Modifier;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.type.TypeVariable;
import javax.lang.model.util.ElementFilter;
/**
@@ -116,8 +118,26 @@ class TypeElementMembers {
private boolean isSetterReturnType(ExecutableElement method) {
TypeMirror returnType = method.getReturnType();
return (TypeKind.VOID == returnType.getKind()
|| this.env.getTypeUtils().isSameType(method.getEnclosingElement().asType(), returnType));
// void
if (TypeKind.VOID == returnType.getKind()) {
return true;
}
TypeMirror classType = method.getEnclosingElement().asType();
TypeUtils typeUtils = this.env.getTypeUtils();
// Chain
if (typeUtils.isSameType(classType, returnType)) {
return true;
}
// Chain generic type, <T extends classType>
List<? extends TypeMirror> genericTypes = ((DeclaredType) classType).getTypeArguments();
return genericTypes.stream().anyMatch((genericType) -> {
TypeMirror upperBound = ((TypeVariable) genericType).getUpperBound();
String classTypeName = typeUtils.getQualifiedName(((DeclaredType) classType).asElement());
String genericTypeName = typeUtils.getQualifiedName(((DeclaredType) upperBound).asElement());
return classTypeName.equals(genericTypeName);
});
}
private String getAccessorName(String methodName) {