Java SQL Type readObject(DataInput in, int sqlType)

Description

read Object

License

Apache License

Declaration

public static Object readObject(DataInput in, int sqlType) throws IOException 

Method Source Code

//package com.java2s;
/*//  w  ww. j a va  2  s.c o  m
 * Copyright 2013-2015 Makoto YUI
 *
 * 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.io.DataInput;

import java.io.IOException;
import java.sql.Timestamp;
import java.sql.Types;

import java.util.Arrays;
import java.util.Collections;

public class Main {
    public static Object readObject(DataInput in, int sqlType) throws IOException {
        switch (sqlType) {
        case Types.VARCHAR:
            return in.readUTF();
        case Types.FLOAT:
            return Float.valueOf(in.readFloat());
        case Types.DOUBLE:
            return Double.valueOf(in.readDouble());
        case Types.BOOLEAN:
            return Boolean.valueOf(in.readBoolean());
        case Types.TINYINT:
            return Byte.valueOf(in.readByte());
        case Types.SMALLINT:
            return Short.valueOf(in.readShort());
        case Types.INTEGER:
            return Integer.valueOf(in.readInt());
        case Types.BIGINT:
            return Long.valueOf(in.readLong());
        case Types.TIMESTAMP: {
            long time = in.readLong();
            return new Timestamp(time);
        }
        case Types.BINARY: {
            int size = in.readInt();
            byte[] b = new byte[size];
            in.readFully(b);
            return b;
        }
        case Types.ARRAY: {
            int size = in.readInt();
            if (size == 0) {
                return Collections.emptyList();
            }
            int elemType = in.readInt();
            Object[] a = new Object[size];
            for (int i = 0; i < size; i++) {
                Object o = readObject(in, elemType);
                a[i] = o;
            }
            return Arrays.asList(a);
        }
        default:
            throw new IOException("Cannot read Object for type: " + sqlType);
        }
    }
}

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