Java SQL Type getJavaType(int sqlType)

Description

get Java Type

License

Apache License

Declaration

public static Class getJavaType(int sqlType) 

Method Source Code

//package com.java2s;
/**//from   ww w .j a v  a 2s  .c o m
 * Copyright 2016 Hortonworks.
 *
 * 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.
 **/

import java.lang.reflect.Field;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.sql.Types;

public class Main {
    public static Class getJavaType(int sqlType) {
        switch (sqlType) {
        case Types.CHAR:
        case Types.VARCHAR:
        case Types.LONGVARCHAR:
        case Types.CLOB:
            return String.class;
        case Types.BINARY:
        case Types.VARBINARY:
        case Types.LONGVARBINARY:
            return byte[].class;
        case Types.BIT:
            return Boolean.class;
        case Types.TINYINT:
        case Types.SMALLINT:
            return Short.class;
        case Types.INTEGER:
            return Integer.class;
        case Types.BIGINT:
            return Long.class;
        case Types.REAL:
            return Float.class;
        case Types.DOUBLE:
        case Types.FLOAT:
            return Double.class;
        case Types.DATE:
            return Date.class;
        case Types.TIME:
            return Time.class;
        case Types.TIMESTAMP:
            return Timestamp.class;
        default:
            throw new RuntimeException("We do not support tables with SqlType: " + getSqlTypeName(sqlType));
        }
    }

    private static String getSqlTypeName(int sqlType) {
        try {
            Integer val = sqlType;
            for (Field field : Types.class.getFields()) {
                if (val.equals(field.get(null))) {
                    return field.getName();
                }
            }
        } catch (IllegalAccessException e) {
            throw new RuntimeException("Could not get sqlTypeName ", e);
        }
        throw new RuntimeException("Unknown sqlType " + sqlType);
    }
}

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6. getJavaType(String rdbType)
7. getJavaTypeFromSqlType(int sqlType)
8. getJavaTypeNameByJdbcType(int jdbcType)
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