| // SPDX-License-Identifier: LGPL-2.1-or-later |
| // Copyright (c) 2012-2014 Monty Program Ab |
| // Copyright (c) 2015-2021 MariaDB Corporation Ab |
| |
| package org.mariadb.jdbc.client.column; |
| |
| import java.sql.*; |
| import java.util.Calendar; |
| import org.mariadb.jdbc.Configuration; |
| import org.mariadb.jdbc.client.ColumnDecoder; |
| import org.mariadb.jdbc.client.DataType; |
| import org.mariadb.jdbc.client.ReadableByteBuf; |
| import org.mariadb.jdbc.message.server.ColumnDefinitionPacket; |
| import org.mariadb.jdbc.plugin.codec.ByteCodec; |
| |
| /** Column metadata definition */ |
| public class BitColumn extends ColumnDefinitionPacket implements ColumnDecoder { |
| /** |
| * Constructor for column corresponding to BIT datatype. Class permit specific decoding for this |
| * datatype |
| * |
| * @param buf Column definition MySQL packet buffer |
| * @param charset charset |
| * @param length datatype length |
| * @param dataType data type |
| * @param decimals number of decimals |
| * @param flags column flags |
| * @param stringPos string value position |
| * @param extTypeName extended type name |
| * @param extTypeFormat extended type format |
| */ |
| public BitColumn( |
| ReadableByteBuf buf, |
| int charset, |
| long length, |
| DataType dataType, |
| byte decimals, |
| int flags, |
| int[] stringPos, |
| String extTypeName, |
| String extTypeFormat) { |
| super(buf, charset, length, dataType, decimals, flags, stringPos, extTypeName, extTypeFormat); |
| } |
| |
| public String defaultClassname(Configuration conf) { |
| return columnLength == 1 ? Boolean.class.getName() : "byte[]"; |
| } |
| |
| public int getColumnType(Configuration conf) { |
| return columnLength == 1 ? Types.BOOLEAN : Types.VARBINARY; |
| } |
| |
| public String getColumnTypeName(Configuration conf) { |
| return "BIT"; |
| } |
| |
| public int getPrecision() { |
| return (int) columnLength; |
| } |
| |
| @Override |
| public Object getDefaultText(final Configuration conf, ReadableByteBuf buf, int length) |
| throws SQLDataException { |
| if (columnLength == 1) { |
| return ByteCodec.parseBit(buf, length) != 0; |
| } |
| byte[] arr = new byte[length]; |
| buf.readBytes(arr); |
| return arr; |
| } |
| |
| @Override |
| public Object getDefaultBinary(final Configuration conf, ReadableByteBuf buf, int length) |
| throws SQLDataException { |
| return getDefaultText(conf, buf, length); |
| } |
| |
| @Override |
| public boolean decodeBooleanText(ReadableByteBuf buf, int length) throws SQLDataException { |
| return ByteCodec.parseBit(buf, length) != 0; |
| } |
| |
| @Override |
| public boolean decodeBooleanBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| return ByteCodec.parseBit(buf, length) != 0; |
| } |
| |
| @Override |
| public byte decodeByteText(ReadableByteBuf buf, int length) throws SQLDataException { |
| byte val = buf.readByte(); |
| if (length > 1) buf.skip(length - 1); |
| return val; |
| } |
| |
| @Override |
| public byte decodeByteBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| return decodeByteText(buf, length); |
| } |
| |
| @Override |
| public String decodeStringText(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| byte[] bytes = new byte[length]; |
| buf.readBytes(bytes); |
| StringBuilder sb = new StringBuilder(bytes.length * Byte.SIZE + 3); |
| sb.append("b'"); |
| boolean firstByteNonZero = false; |
| for (int i = 0; i < Byte.SIZE * bytes.length; i++) { |
| boolean b = (bytes[i / Byte.SIZE] & 1 << (Byte.SIZE - 1 - (i % Byte.SIZE))) > 0; |
| if (b) { |
| sb.append('1'); |
| firstByteNonZero = true; |
| } else if (firstByteNonZero) { |
| sb.append('0'); |
| } |
| } |
| sb.append("'"); |
| return sb.toString(); |
| } |
| |
| @Override |
| public String decodeStringBinary(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| byte[] bytes = new byte[length]; |
| buf.readBytes(bytes); |
| StringBuilder sb = new StringBuilder(bytes.length * Byte.SIZE + 3); |
| sb.append("b'"); |
| boolean firstByteNonZero = false; |
| for (int i = 0; i < Byte.SIZE * bytes.length; i++) { |
| boolean b = (bytes[i / Byte.SIZE] & 1 << (Byte.SIZE - 1 - (i % Byte.SIZE))) > 0; |
| if (b) { |
| sb.append('1'); |
| firstByteNonZero = true; |
| } else if (firstByteNonZero) { |
| sb.append('0'); |
| } |
| } |
| sb.append("'"); |
| return sb.toString(); |
| } |
| |
| @Override |
| public short decodeShortText(ReadableByteBuf buf, int length) throws SQLDataException { |
| long result = 0; |
| for (int i = 0; i < length; i++) { |
| byte b = buf.readByte(); |
| result = (result << 8) + (b & 0xff); |
| } |
| if ((short) result != result || (result < 0 && !isSigned())) { |
| throw new SQLDataException("Short overflow"); |
| } |
| return (short) result; |
| } |
| |
| @Override |
| public short decodeShortBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| return decodeShortText(buf, length); |
| } |
| |
| @Override |
| public int decodeIntText(ReadableByteBuf buf, int length) throws SQLDataException { |
| long result = 0; |
| for (int i = 0; i < length; i++) { |
| byte b = buf.readByte(); |
| result = (result << 8) + (b & 0xff); |
| } |
| int res = (int) result; |
| if (res != result || (result < 0 && !isSigned())) { |
| throw new SQLDataException("integer overflow"); |
| } |
| return res; |
| } |
| |
| @Override |
| public int decodeIntBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| long result = 0; |
| for (int i = 0; i < length; i++) { |
| byte b = buf.readByte(); |
| result = (result << 8) + (b & 0xff); |
| } |
| |
| int res = (int) result; |
| if (res != result) { |
| throw new SQLDataException("integer overflow"); |
| } |
| |
| return res; |
| } |
| |
| @Override |
| public long decodeLongText(ReadableByteBuf buf, int length) throws SQLDataException { |
| long result = 0; |
| for (int i = 0; i < length; i++) { |
| byte b = buf.readByte(); |
| result = (result << 8) + (b & 0xff); |
| } |
| return result; |
| } |
| |
| @Override |
| public long decodeLongBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| return decodeLongText(buf, length); |
| } |
| |
| @Override |
| public float decodeFloatText(ReadableByteBuf buf, int length) throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Float", dataType)); |
| } |
| |
| @Override |
| public float decodeFloatBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Float", dataType)); |
| } |
| |
| @Override |
| public double decodeDoubleText(ReadableByteBuf buf, int length) throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Double", dataType)); |
| } |
| |
| @Override |
| public double decodeDoubleBinary(ReadableByteBuf buf, int length) throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Double", dataType)); |
| } |
| |
| @Override |
| public Date decodeDateText(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Date", dataType)); |
| } |
| |
| @Override |
| public Date decodeDateBinary(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Date", dataType)); |
| } |
| |
| @Override |
| public Time decodeTimeText(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Time", dataType)); |
| } |
| |
| @Override |
| public Time decodeTimeBinary(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException(String.format("Data type %s cannot be decoded as Time", dataType)); |
| } |
| |
| @Override |
| public Timestamp decodeTimestampText(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException( |
| String.format("Data type %s cannot be decoded as Timestamp", dataType)); |
| } |
| |
| @Override |
| public Timestamp decodeTimestampBinary(ReadableByteBuf buf, int length, Calendar cal) |
| throws SQLDataException { |
| buf.skip(length); |
| throw new SQLDataException( |
| String.format("Data type %s cannot be decoded as Timestamp", dataType)); |
| } |
| } |