org.springframework.aot.hint.AbstractTypeReference Maven / Gradle / Ivy
/*
* Copyright 2002-2022 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.aot.hint;
import java.util.Objects;
import org.springframework.lang.Nullable;
/**
* Base {@link TypeReference} implementation that ensures consistent behaviour
* for {@code equals()}, {@code hashCode()}, and {@code toString()} based on
* the {@linkplain #getCanonicalName() canonical name}.
*
* @author Stephane Nicoll
* @since 6.0
*/
public abstract class AbstractTypeReference implements TypeReference {
private final String packageName;
private final String simpleName;
@Nullable
private final TypeReference enclosingType;
protected AbstractTypeReference(String packageName, String simpleName, @Nullable TypeReference enclosingType) {
this.packageName = packageName;
this.simpleName = simpleName;
this.enclosingType = enclosingType;
}
@Override
public String getName() {
TypeReference enclosingType = getEnclosingType();
String simpleName = getSimpleName();
return (enclosingType != null ? (enclosingType.getName() + '$' + simpleName) :
addPackageIfNecessary(simpleName));
}
@Override
public String getPackageName() {
return this.packageName;
}
@Override
public String getSimpleName() {
return this.simpleName;
}
@Nullable
@Override
public TypeReference getEnclosingType() {
return this.enclosingType;
}
protected abstract boolean isPrimitive();
protected String addPackageIfNecessary(String part) {
if (this.packageName.isEmpty() ||
this.packageName.equals("java.lang") && isPrimitive()) {
return part;
}
return this.packageName + '.' + part;
}
@Override
public int hashCode() {
return Objects.hash(getCanonicalName());
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof TypeReference otherReference)) {
return false;
}
return getCanonicalName().equals(otherReference.getCanonicalName());
}
@Override
public String toString() {
return getCanonicalName();
}
}