org.tomitribe.crest.val.Writable Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.tomitribe.crest.val;

import javax.validation.Payload;
import java.io.File;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Documented
@javax.validation.Constraint(validatedBy = {Writable.Constraint.class})
@Target({METHOD, FIELD, ANNOTATION_TYPE, PARAMETER})
@Retention(RUNTIME)
public @interface Writable {
    Class[] groups() default {};

    String message() default "{org.tomitribe.crest.val.Writable.message}";

    Class[] payload() default {};

    public static class Constraint extends ConstraintAdapter {
        @Override
        public boolean isValid(final File value) {
            return value.canWrite();
        }
    }
}