org.bson.codecs.pojo.IdPropertyModelHolder Maven / Gradle / Ivy

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/*
 * Copyright 2008-present MongoDB, 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 org.bson.codecs.pojo;

import org.bson.codecs.configuration.CodecConfigurationException;

import static java.lang.String.format;

final class IdPropertyModelHolder {
    private final PropertyModel propertyModel;
    private final IdGenerator idGenerator;

    static  IdPropertyModelHolder create(final ClassModel classModel, final PropertyModel idPropertyModel) {
        return create(classModel.getType(), idPropertyModel, classModel.getIdPropertyModelHolder().getIdGenerator());
    }

    @SuppressWarnings("unchecked")
    static  IdPropertyModelHolder create(final Class type, final PropertyModel idProperty,
                                                     final IdGenerator idGenerator) {
        if (idProperty == null && idGenerator != null) {
            throw new CodecConfigurationException(format("Invalid IdGenerator. There is no IdProperty set for: %s", type));
        } else if (idGenerator != null && !idProperty.getTypeData().getType().isAssignableFrom(idGenerator.getType())) {
            throw new CodecConfigurationException(format("Invalid IdGenerator. Mismatching types, the IdProperty type is: %s but"
                    + " the IdGenerator type is: %s", idProperty.getTypeData().getType(), idGenerator.getType()));
        }
        return new IdPropertyModelHolder(idProperty, (IdGenerator) idGenerator);
    }

    private IdPropertyModelHolder(final PropertyModel propertyModel, final IdGenerator idGenerator) {
        this.propertyModel = propertyModel;
        this.idGenerator = idGenerator;
    }

    PropertyModel getPropertyModel() {
        return propertyModel;
    }

    IdGenerator getIdGenerator() {
        return idGenerator;
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        IdPropertyModelHolder that = (IdPropertyModelHolder) o;

        if (propertyModel != null ? !propertyModel.equals(that.propertyModel) : that.propertyModel != null) {
            return false;
        }
        return idGenerator != null ? idGenerator.equals(that.idGenerator) : that.idGenerator == null;
    }

    @Override
    public int hashCode() {
        int result = propertyModel != null ? propertyModel.hashCode() : 0;
        result = 31 * result + (idGenerator != null ? idGenerator.hashCode() : 0);
        return result;
    }
}