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/*-
 * ============LICENSE_START=======================================================
 * ONAP CLAMP
 * ================================================================================
 * Copyright (C) 2019 AT&T Intellectual Property. All rights
 *                             reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END============================================
 * ===================================================================
 *
 */

package org.onap.policy.clamp.dao.model.jsontype;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import org.hibernate.type.descriptor.ValueBinder;
import org.hibernate.type.descriptor.ValueExtractor;
import org.hibernate.type.descriptor.WrapperOptions;
import org.hibernate.type.descriptor.java.JavaTypeDescriptor;
import org.hibernate.type.descriptor.sql.BasicBinder;
import org.hibernate.type.descriptor.sql.BasicExtractor;
import org.hibernate.type.descriptor.sql.SqlTypeDescriptor;

public class JsonStringSqlTypeDescriptor implements SqlTypeDescriptor {

    /**
     * The serial version ID.
     */
    private static final long serialVersionUID = 1103168570216921981L;

    public static final JsonStringSqlTypeDescriptor INSTANCE = new JsonStringSqlTypeDescriptor();

    @Override
    public int getSqlType() {
        return Types.OTHER;
    }

    @Override
    public boolean canBeRemapped() {
        return true;
    }

    @Override
    public <X> ValueBinder<X> getBinder(JavaTypeDescriptor<X> javaTypeDescriptor) {
        return new BasicBinder<X>(javaTypeDescriptor, this) {
            @Override
            protected void doBind(PreparedStatement st, X value, int index, WrapperOptions options)
                throws SQLException {
                st.setString(index, javaTypeDescriptor.unwrap(value, String.class, options));
            }

            @Override
            protected void doBind(CallableStatement st, X value, String name, WrapperOptions options)
                throws SQLException {
                st.setString(name, javaTypeDescriptor.unwrap(value, String.class, options));
            }
        };
    }

    @Override
    public <X> ValueExtractor<X> getExtractor(JavaTypeDescriptor<X> javaTypeDescriptor) {
        return new BasicExtractor<X>(javaTypeDescriptor, this) {
            @Override
            protected X doExtract(ResultSet rs, String name, WrapperOptions options) throws SQLException {
                return javaTypeDescriptor.wrap(extractJson(rs, name), options);
            }

            @Override
            protected X doExtract(CallableStatement statement, int index, WrapperOptions options) throws SQLException {
                return javaTypeDescriptor.wrap(extractJson(statement, index), options);
            }

            @Override
            protected X doExtract(CallableStatement statement, String name, WrapperOptions options)
                throws SQLException {
                return javaTypeDescriptor.wrap(extractJson(statement, name), options);
            }
        };
    }

    protected Object extractJson(ResultSet rs, String name) throws SQLException {
        return rs.getObject(name);
    }

    protected Object extractJson(CallableStatement statement, int index) throws SQLException {
        return statement.getObject(index);
    }

    protected Object extractJson(CallableStatement statement, String name) throws SQLException {
        return statement.getObject(name);
    }

}