ValueTypeMapper.java example

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/*
 * 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.jdbi.v3.core.mapper;

import static org.jdbi.v3.core.generic.GenericTypes.getErasedType;

import java.lang.reflect.Type;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Optional;

import org.jdbi.v3.core.ValueType;
import org.jdbi.v3.core.config.ConfigRegistry;
import org.jdbi.v3.core.statement.StatementContext;

public class ValueTypeMapper implements ColumnMapper<ValueType> {
    public ValueTypeMapper() {}

    @Override
    public ValueType map(ResultSet r, int columnNumber, StatementContext ctx) throws SQLException {
        return ValueType.valueOf(r.getString(columnNumber));
    }

    public static class Factory implements ColumnMapperFactory {
        @Override
        public Optional<ColumnMapper<?>> build(Type type, ConfigRegistry config) {
            return ValueType.class.isAssignableFrom(getErasedType(type))
                    ? Optional.of(new ValueTypeMapper())
                    : Optional.empty();
        }
    }
}