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/*
* Copyright (C) 2009-2017 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Generates implementations for the {@code equals} and {@code hashCode} methods inherited by all objects, based on relevant fields.
* <p>
* Complete documentation is found at <a href="https://projectlombok.org/features/EqualsAndHashCode">the project lombok features page for @EqualsAndHashCode</a>.
*/
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.SOURCE)
public @interface EqualsAndHashCode {
/**
* Any fields listed here will not be taken into account in the generated {@code equals} and {@code hashCode} implementations.
* Mutually exclusive with {@link #of()}.
*
* @return A list of fields to exclude.
*/
String[] exclude() default {};
/**
* If present, explicitly lists the fields that are to be used for identity.
* Normally, all non-static, non-transient fields are used for identity.
* <p>
* Mutually exclusive with {@link #exclude()}.
*
* @return A list of fields to use (<em>default</em>: all of them).
*/
String[] of() default {};
/**
* Call on the superclass's implementations of {@code equals} and {@code hashCode} before calculating for the fields in this class.
* <strong>default: false</strong>
*
* @return Whether to call the superclass's {@code equals} implementation as part of the generated equals algorithm.
*/
boolean callSuper() default false;
/**
* Normally, if getters are available, those are called. To suppress this and let the generated code use the fields directly, set this to {@code true}.
* <strong>default: false</strong>
*
* @return If {@code true}, always use direct field access instead of calling the getter method.
*/
boolean doNotUseGetters() default false;
/**
* Any annotations listed here are put on the generated parameter of {@code equals} and {@code canEqual}.
* This is useful to add for example a {@code Nullable} annotation.<br>
* The syntax for this feature depends on JDK version (nothing we can do about that; it's to work around javac bugs).<br>
* up to JDK7:<br>
* {@code @EqualsAndHashCode(onParam=@__({@AnnotationsGoHere}))}<br>
* from JDK8:<br>
* {@code @EqualsAndHashCode(onParam_={@AnnotationsGohere})} // note the underscore after {@code onParam}.
*
* @return List of annotations to apply to the generated parameter in the {@code equals()} method.
*/
AnyAnnotation[] onParam() default {};
/**
* Placeholder annotation to enable the placement of annotations on the generated code.
* @deprecated Don't use this annotation, ever - Read the documentation.
*/
@Deprecated
@Retention(RetentionPolicy.SOURCE)
@Target({})
@interface AnyAnnotation {}
}
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