DataPointSearchCriteriaValidator.java

/*
 * Copyright 2015 Open mHealth
 *
 * 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.openmhealth.shimmer.common.validation;

import org.openmhealth.shimmer.common.domain.DataPointSearchCriteria;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;


/**
 * @author Emerson Farrugia
 */
public class DataPointSearchCriteriaValidator
        implements ConstraintValidator<ValidDataPointSearchCriteria, DataPointSearchCriteria> {

    @Override
    public void initialize(ValidDataPointSearchCriteria constraintAnnotation) {
    }

    // TODO add constraint violations if valuable
    @SuppressWarnings("RedundantIfStatement")
    @Override
    public boolean isValid(DataPointSearchCriteria value, ConstraintValidatorContext context) {

        if (value == null) {
            return true;
        }

        // TODO implement checks for reversed bounds

        if (!value.getCreationTimestampRange().hasLowerBound()
                && !value.getCreationTimestampRange().hasUpperBound()
                && !value.getEffectiveTimestampRange().hasLowerBound()
                && !value.getEffectiveTimestampRange().hasUpperBound()) {

            return false;
        }

        return true;
    }
}