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SchemaSwap.java
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SchemaSwap.java
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/**
* Copyright (C) 2015 Red Hat, Inc.
*
* 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
*
* http://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 io.fabric8.crd.generator.annotation;
import java.lang.annotation.*;
/**
* Annotation that allows replacing a nested schema with one from another class.
*
* This is an alternative to {@link SchemaFrom} for cases when the classes
* are coming from an external source and fields cannot be annotated directly.
*
* @see SchemaFrom
*/
@Target({ ElementType.ANNOTATION_TYPE, ElementType.TYPE_USE, ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Repeatable(SchemaSwaps.class)
public @interface SchemaSwap {
/**
* The owning class of the field whose type is to be replaced.
* <p>
* It is an error if the type is not used in the same schema hierarchy where the {@link SchemaSwap} is used.
*/
Class<?> originalType();
/**
* Name of the field whose type is to be replaced.
* <p>
* The name should be specified exactly as defined in the Java class, before any renames
* and transformations ({@code @JsonProperty} and similar) take place.
* <p>
* It is an error if the field does not exist on {@link #originalType()}
*/
String fieldName();
/**
* The replacement schema that will be used for the {@link #fieldName()} instead of its specified type
* <p>
* The default value of {@code void.class} causes the field to be skipped
*/
Class<?> targetType() default void.class;
}