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Use ResolvableType to back TypeInformation.

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Reworked the implementation of the TypeInformation type hierarchy to be based on Spring's ResolvableType for most of the heavy-lifting.

Original pull request: #2572.
Related ticket: #2312.
This commit is contained in:
Christoph Strobl
2021-11-18 09:06:15 +01:00
committed by Oliver Drotbohm
parent 8721ab4170
commit 1d6331ccb6
16 changed files with 530 additions and 1269 deletions
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2
src/test/java/org/springframework/data/projection/ProjectingMethodInterceptorUnitTests.java
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@@ -66,7 +66,7 @@ class ProjectingMethodInterceptorUnitTests {
}
@Test // DATAREST-221
void retunsDelegateResultAsIsIfTypesMatch() throws Throwable {
void returnsDelegateResultAsIsIfTypesMatch() throws Throwable {
MethodInterceptor methodInterceptor = new ProjectingMethodInterceptor(factory, interceptor, conversionService);

4
src/test/java/org/springframework/data/repository/core/support/DefaultRepositoryMetadataUnitTests.java
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@@ -58,7 +58,7 @@ class DefaultRepositoryMetadataUnitTests {
@Test // DATACMNS-406
void rejectsUnparameterizedRepositoryInterface() {
assertThatIllegalArgumentException().isThrownBy(() -> new DefaultRepositoryMetadata(Repository.class));
assertThatIllegalArgumentException().isThrownBy(() -> new DefaultRepositoryMetadata(RepoWithoutArgs.class));
}
@Test
@@ -201,4 +201,6 @@ class DefaultRepositoryMetadataUnitTests {
// Contrived example but to make sure recursive wrapper resolution works
Optional<Optional<User>> findByLastname(String lastname);
}
interface RepoWithoutArgs extends Repository {}
}

17
src/test/java/org/springframework/data/util/ClassTypeInformationUnitTests.java
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@@ -34,7 +34,6 @@ import org.springframework.aop.SpringProxy;
import org.springframework.aop.TargetSource;
import org.springframework.aop.framework.Advised;
import org.springframework.aop.framework.AopConfigException;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.data.mapping.Person;
import org.springframework.lang.Nullable;
@@ -486,6 +485,16 @@ public class ClassTypeInformationUnitTests {
assertThat(typeInfoLeaf).isNotEqualTo(typeInformationLeafProxy);
}
@Test // GH-2312
void typeInfoShouldPreserveGenericParameter() {
TypeInformation<Wrapper> wrapperTypeInfo = ClassTypeInformation.from(Wrapper.class);
TypeInformation<?> fieldTypeInfo = wrapperTypeInfo.getProperty("field");
TypeInformation<?> valueTypeInfo = fieldTypeInfo.getProperty("value");
assertThat(valueTypeInfo.getType()).isEqualTo(Leaf.class);
}
static class StringMapContainer extends MapContainer<String> {
}
@@ -697,6 +706,12 @@ public class ClassTypeInformationUnitTests {
static class SomeConcrete extends SomeGeneric<String> {}
static class GenericExtendingSomeGeneric<T> extends SomeGeneric<T> { }
static class Wrapper {
GenericExtendingSomeGeneric<Leaf> field;
}
static class WildcardedWrapper {
SomeGeneric<?> wildcarded;
}

263
src/test/java/org/springframework/data/util/ParameterizedTypeInformationUnitTests.java
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@@ -1,263 +0,0 @@
/*
* Copyright 2011-2022 the original author or authors.
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* 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.springframework.data.util;
import static java.util.Collections.*;
import static org.assertj.core.api.Assertions.*;
import static org.mockito.Mockito.*;
import static org.springframework.data.util.ClassTypeInformation.from;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.mockito.junit.jupiter.MockitoSettings;
import org.mockito.quality.Strictness;
/**
* Unit tests for {@link ParameterizedTypeInformation}.
*
* @author Oliver Gierke
* @author Mark Paluch
* @author Jürgen Diez
*/
@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
class ParameterizedTypeInformationUnitTests {
@Mock ParameterizedType one;
@BeforeEach
void setUp() {
when(one.getActualTypeArguments()).thenReturn(new Type[0]);
}
@Test
void considersTypeInformationsWithDifferingParentsNotEqual() {
var stringParent = new TypeDiscoverer<String>(String.class, emptyMap());
var objectParent = new TypeDiscoverer<Object>(Object.class, emptyMap());
var first = new ParameterizedTypeInformation<Object>(one, stringParent);
var second = new ParameterizedTypeInformation<Object>(one, objectParent);
assertThat(first).isNotEqualTo(second);
}
@Test
void considersTypeInformationsWithSameParentsNotEqual() {
var stringParent = new TypeDiscoverer<String>(String.class, emptyMap());
var first = new ParameterizedTypeInformation<Object>(one, stringParent);
var second = new ParameterizedTypeInformation<Object>(one, stringParent);
assertThat(first.equals(second)).isTrue();
}
@Test // DATACMNS-88
void resolvesMapTypesCorrectly() {
TypeInformation<Foo> type = ClassTypeInformation.from(Foo.class);
var propertyType = type.getProperty("param");
var value = propertyType.getProperty("value");
assertThat(propertyType.getComponentType().getType()).isEqualTo(Locale.class);
assertThat(value.getType()).isEqualTo(String.class);
assertThat(propertyType.getMapValueType().getType()).isEqualTo(String.class);
propertyType = type.getProperty("param2");
value = propertyType.getProperty("value");
assertThat(propertyType.getComponentType().getType()).isEqualTo(String.class);
assertThat(value.getType()).isEqualTo(String.class);
assertThat(propertyType.getMapValueType().getType()).isEqualTo(Locale.class);
}
@Test // #2517
void resolvesVavrMapTypesCorrectly() {
var type = ClassTypeInformation.from(VavrFoo.class);
var propertyType = type.getProperty("param");
assertThat(propertyType.getComponentType().getType()).isEqualTo(Locale.class);
assertThat(propertyType.getMapValueType().getType()).isEqualTo(String.class);
propertyType = type.getProperty("param2");
assertThat(propertyType.getComponentType().getType()).isEqualTo(String.class);
assertThat(propertyType.getMapValueType().getType()).isEqualTo(Locale.class);
}
@Test // DATACMNS-446
void createsToStringRepresentation() {
assertThat(from(Foo.class).getProperty("param").toString())
.isEqualTo("org.springframework.data.util.ParameterizedTypeInformationUnitTests$Localized<java.lang.String>");
}
@Test // DATACMNS-485
void hashCodeShouldBeConsistentWithEqualsForResolvedTypes() {
var first = from(First.class).getProperty("property");
var second = from(Second.class).getProperty("property");
assertThat(first).isEqualTo(second);
assertThat(first).satisfies(
left -> assertThat(second).satisfies(right -> assertThat(left.hashCode()).isEqualTo(right.hashCode())));
}
@Test // DATACMNS-485
void getActualTypeShouldNotUnwrapParameterizedTypes() {
var type = from(First.class).getProperty("property");
assertThat(type.getActualType()).isEqualTo(type);
}
@Test // DATACMNS-697
void usesLocalGenericInformationOfFields() {
TypeInformation<NormalizedProfile> information = ClassTypeInformation.from(NormalizedProfile.class);
assertThat(information.getProperty("education2.data").getComponentType().getProperty("value"))//
.satisfies(it -> assertThat(it.getType()).isEqualTo(Education.class));
}
@Test // DATACMNS-899
void returnsEmptyOptionalMapValueTypeForNonMapProperties() {
var typeInformation = ClassTypeInformation.from(Bar.class).getProperty("param");
assertThat(typeInformation).isInstanceOf(ParameterizedTypeInformation.class);
assertThat(typeInformation.getMapValueType()).isNull();
}
@Test // DATACMNS-1135
void prefersLocalGenericsDeclarationOverParentBound() {
var candidate = ClassTypeInformation.from(Candidate.class);
var componentType = candidate.getRequiredProperty("experiences.values").getRequiredComponentType();
componentType = componentType.getRequiredProperty("responsibilities.values").getRequiredComponentType();
assertThat(componentType.getType()).isEqualTo(Responsibility.class);
}
@Test // DATACMNS-1196
void detectsNestedGenerics() {
var myList = ClassTypeInformation.from(EnumGeneric.class).getRequiredProperty("inner.myList");
assertThat(myList.getRequiredComponentType().getType()).isEqualTo(MyEnum.class);
}
@SuppressWarnings("serial")
class Localized<S> extends HashMap<Locale, S> {
S value;
}
@SuppressWarnings("serial")
class Localized2<S> extends HashMap<S, Locale> {
S value;
}
class Foo {
Localized<String> param;
Localized2<String> param2;
}
class VavrFoo {
io.vavr.collection.HashMap<Locale, String> param;
io.vavr.collection.HashMap<String, Locale> param2;
}
class Bar {
List<String> param;
}
class Parameterized<T> {
T property;
}
class First {
Parameterized<String> property;
}
class Second {
Parameterized<String> property;
}
// see DATACMNS-697
class NormalizedProfile {
ListField<Education> education2;
}
class ListField<L> {
List<Value<L>> data;
}
class Value<T> {
T value;
}
private class Education {}
// DATACMNS-1135
abstract class CandidateInfo {}
private class Responsibility extends CandidateInfo {}
class Experience extends CandidateInfo {
CandidateInfoContainer<Responsibility> responsibilities;
}
class CandidateInfoContainer<E extends CandidateInfo> {
List<E> values = new ArrayList<>();
}
class Candidate {
CandidateInfoContainer<Experience> experiences;
}
// FOO
static abstract class Generic<T> {
Inner<T> inner;
static class Inner<T> {
List<T> myList;
}
}
private static class EnumGeneric extends Generic<MyEnum> {}
public enum MyEnum {
E1, E2
}
}

188
src/test/java/org/springframework/data/util/TypeDiscovererUnitTests.java
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@@ -18,6 +18,7 @@ package org.springframework.data.util;
import static org.assertj.core.api.Assertions.*;
import static org.springframework.data.util.ClassTypeInformation.from;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.util.Collection;
@@ -32,6 +33,8 @@ import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.springframework.core.ResolvableType;
import org.springframework.util.ReflectionUtils;
/**
* Unit tests for {@link TypeDiscoverer}.
@@ -49,28 +52,28 @@ public class TypeDiscovererUnitTests {
@Test
void rejectsNullType() {
assertThatIllegalArgumentException().isThrownBy(() -> new TypeDiscoverer<>(null, null));
assertThatIllegalArgumentException().isThrownBy(() -> new TypeDiscoverer<>((ResolvableType) null));
}
@Test
void isNotEqualIfTypesDiffer() {
var objectTypeInfo = new TypeDiscoverer<Object>(Object.class, EMPTY_MAP);
var stringTypeInfo = new TypeDiscoverer<String>(String.class, EMPTY_MAP);
var objectTypeInfo = new TypeDiscoverer<Object>(Object.class);
var stringTypeInfo = new TypeDiscoverer<String>(String.class);
assertThat(objectTypeInfo.equals(stringTypeInfo)).isFalse();
}
@Test
void isNotEqualIfTypeVariableMapsDiffer() {
assertThat(firstMap.equals(secondMap)).isFalse();
var first = new TypeDiscoverer<Object>(Object.class, firstMap);
var second = new TypeDiscoverer<Object>(Object.class, secondMap);
assertThat(first.equals(second)).isFalse();
}
// @Test
// void isNotEqualIfTypeVariableMapsDiffer() {
//
// assertThat(firstMap.equals(secondMap)).isFalse();
//
// var first = new TypeDiscoverer<Object>(Object.class);
// var second = new TypeDiscoverer<Object>(Object.class);
//
// assertThat(first.equals(second)).isFalse();
// }
@Test
void dealsWithTypesReferencingThemselves() {
@@ -94,7 +97,7 @@ public class TypeDiscovererUnitTests {
@Test
void returnsComponentAndValueTypesForMapExtensions() {
TypeInformation<?> discoverer = new TypeDiscoverer<>(CustomMap.class, EMPTY_MAP);
TypeInformation<?> discoverer = new TypeDiscoverer<>(CustomMap.class);
assertThat(discoverer.getMapValueType().getType()).isEqualTo(Locale.class);
assertThat(discoverer.getComponentType().getType()).isEqualTo(String.class);
@@ -103,7 +106,7 @@ public class TypeDiscovererUnitTests {
@Test
void returnsComponentTypeForCollectionExtension() {
var discoverer = new TypeDiscoverer<CustomCollection>(CustomCollection.class, firstMap);
var discoverer = new TypeDiscoverer<CustomCollection>(CustomCollection.class);
assertThat(discoverer.getComponentType().getType()).isEqualTo(String.class);
}
@@ -111,7 +114,7 @@ public class TypeDiscovererUnitTests {
@Test
void returnsComponentTypeForArrays() {
var discoverer = new TypeDiscoverer<String[]>(String[].class, EMPTY_MAP);
var discoverer = new TypeDiscoverer<String[]>(String[].class);
assertThat(discoverer.getComponentType().getType()).isEqualTo(String.class);
}
@@ -119,7 +122,7 @@ public class TypeDiscovererUnitTests {
@Test // DATACMNS-57
void discoveresConstructorParameterTypesCorrectly() throws NoSuchMethodException, SecurityException {
var discoverer = new TypeDiscoverer<GenericConstructors>(GenericConstructors.class, firstMap);
var discoverer = new TypeDiscoverer<GenericConstructors>(GenericConstructors.class);
var constructor = GenericConstructors.class.getConstructor(List.class, Locale.class);
var types = discoverer.getParameterTypes(constructor);
@@ -132,17 +135,17 @@ public class TypeDiscovererUnitTests {
@SuppressWarnings("rawtypes")
void returnsNullForComponentAndValueTypesForRawMaps() {
var discoverer = new TypeDiscoverer<Map>(Map.class, EMPTY_MAP);
var discoverer = new TypeDiscoverer<Map>(Map.class);
assertThat(discoverer.getComponentType()).isNull();
assertThat(discoverer.getMapValueType()).isNull();
assertThat(discoverer.getComponentType()).isNotNull();
assertThat(discoverer.getMapValueType()).isNotNull();
}
@Test // DATACMNS-167
@SuppressWarnings("rawtypes")
void doesNotConsiderTypeImplementingIterableACollection() {
var discoverer = new TypeDiscoverer<Person>(Person.class, EMPTY_MAP);
var discoverer = new TypeDiscoverer<Person>(Person.class);
TypeInformation reference = from(Address.class);
var addresses = discoverer.getProperty("addresses");
@@ -179,6 +182,126 @@ public class TypeDiscovererUnitTests {
assertThat(type.isSubTypeOf(String.class)).isFalse();
}
@Test
void isNotEqualIfFieldsDiffer() {
// should we have something like a default TypeInformation
// wiht static methods for forFieldOfType(), forClass(), like the
// ones we have on resolvable type and then cache the stuff there?
// Managed to get Stackoverflow on hashcode of Resolvable type once for caching
// tests for fields in same class
// tests for inherited fields
// tests for same signature in different classes
}
@Test
// GH-2312
void sameFieldNoGenericsInfoShouldBeEqual() {
Field addresses = ReflectionUtils.findField(Person.class, "addresses");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(addresses, Person.class));
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(addresses, Person.class));
assertThat(discoverer1).isEqualTo(discoverer2);
assertThat(discoverer1.hashCode()).isEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void sameFieldNoGenericsWhenInherited() {
Field addresses = ReflectionUtils.findField(Person.class, "addresses");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(addresses, Person.class));
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(addresses, TypeExtendingPerson.class));
assertThat(discoverer1).isEqualTo(discoverer2);
assertThat(discoverer1.hashCode()).isEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void sameFieldNoGenericsOnDifferentTypes() {
Field addresses1 = ReflectionUtils.findField(Person.class, "addresses");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(addresses1, Person.class));
Field addresses2 = ReflectionUtils.findField(OtherPerson.class, "addresses");
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(addresses2, OtherPerson.class));
assertThat(discoverer1).isEqualTo(discoverer2);
assertThat(discoverer1.hashCode()).isEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void sameFieldWithGenerics() {
Field field1 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(field1, GenericPerson.class));
Field field2 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(field2, GenericPerson.class));
assertThat(discoverer1).isEqualTo(discoverer2);
assertThat(discoverer1.hashCode()).isEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void sameFieldWithGenericsSet() {
Field field1 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(field1, TypeExtendingGenericPersonWithObject.class));
Field field2 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(field2, TypeExtendingGenericPersonWithObject.class));
assertThat(discoverer1).isEqualTo(discoverer2);
assertThat(discoverer1.hashCode()).isEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void sameFieldWithDifferentGenericsSet() {
Field field1 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(field1, TypeExtendingGenericPersonWithObject.class));
Field field2 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(field2, TypeExtendingGenericPersonWithAddress.class));
assertThat(discoverer1).isNotEqualTo(discoverer2);
assertThat(discoverer1.hashCode()).isNotEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void sameFieldWithDifferentNoGenericsAndObjectOneSet() {
Field field1 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer1 = new TypeDiscoverer<>(ResolvableType.forField(field1, GenericPerson.class));
Field field2 = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer2 = new TypeDiscoverer<>(ResolvableType.forField(field2, TypeExtendingGenericPersonWithObject.class));
assertThat(discoverer1).isEqualTo(discoverer2); // TODO: notEquals
assertThat(discoverer1.hashCode()).isEqualTo(discoverer2.hashCode());
}
@Test
// GH-2312
void genericFieldOfType() {
Field field = ReflectionUtils.findField(GenericPerson.class, "value");
TypeDiscoverer<Object> discoverer = new TypeDiscoverer<>(ResolvableType.forField(field, TypeExtendingGenericPersonWithAddress.class));
assertThat(discoverer).isEqualTo(ClassTypeInformation.from(Address.class));
assertThat(discoverer.hashCode()).isEqualTo(ClassTypeInformation.from(Address.class).hashCode());
}
@Test // #2511
void considerVavrMapToBeAMap() {
@@ -190,7 +313,7 @@ public class TypeDiscovererUnitTests {
@Test // #2517
void returnsComponentAndValueTypesForVavrMapExtensions() {
var discoverer = new TypeDiscoverer<>(CustomVavrMap.class, EMPTY_MAP);
var discoverer = new TypeDiscoverer<>(CustomVavrMap.class);
assertThat(discoverer.getMapValueType().getType()).isEqualTo(Locale.class);
assertThat(discoverer.getComponentType().getType()).isEqualTo(String.class);
@@ -226,6 +349,27 @@ public class TypeDiscovererUnitTests {
Iterable<Address> addressIterable;
}
class TypeExtendingPerson {
}
class OtherPerson {
Addresses addresses;
}
class GenericPerson<T> {
T value;
}
class TypeExtendingGenericPersonWithObject extends GenericPerson<Object> {
}
class TypeExtendingGenericPersonWithAddress extends GenericPerson<Address> {
}
abstract class Addresses implements Iterable<Address> {
}