Package org.hibernate.validator.ap.checks

Source Code of org.hibernate.validator.ap.checks.RetentionPolicyCheck

/*
* JBoss, Home of Professional Open Source
* Copyright 2009, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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 org.hibernate.validator.ap.checks;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Collections;
import java.util.Set;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.TypeElement;

import org.hibernate.validator.ap.util.AnnotationApiHelper;
import org.hibernate.validator.ap.util.CollectionHelper;

/**
* Checks, that {@link RetentionPolicy#RUNTIME} is declared for constraint annotation types.
*
* @author Gunnar Morling
*/
public class RetentionPolicyCheck extends AbstractConstraintCheck {

  private final AnnotationApiHelper annotationApiHelper;

  public RetentionPolicyCheck(AnnotationApiHelper annotationApiHelper) {
    this.annotationApiHelper = annotationApiHelper;
  }

  @Override
  public Set<ConstraintCheckError> checkAnnotationType(TypeElement element, AnnotationMirror annotation) {

    Retention retention = element.getAnnotation( Retention.class );

    if ( retention == null ) {
      return CollectionHelper.asSet(
          new ConstraintCheckError( element, null, "CONSTRAINT_TYPE_WITH_MISSING_OR_WRONG_RETENTION" )
      );
    }

    if ( !retention.value().equals( RetentionPolicy.RUNTIME ) ) {
      return CollectionHelper.asSet(
          new ConstraintCheckError(
              element,
              annotationApiHelper.getMirror( element.getAnnotationMirrors(), Retention.class ),
              "CONSTRAINT_TYPE_WITH_MISSING_OR_WRONG_RETENTION"
          )
      );
    }


    return Collections.emptySet();
  }

}
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