| // 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.plugin.codec; |
| |
| import java.io.IOException; |
| import java.sql.SQLDataException; |
| import java.util.Calendar; |
| import java.util.EnumSet; |
| import org.mariadb.jdbc.client.*; |
| import org.mariadb.jdbc.client.socket.Writer; |
| import org.mariadb.jdbc.plugin.Codec; |
| |
| /** Double codec */ |
| public class DoubleCodec implements Codec<Double> { |
| |
| /** default instance */ |
| public static final DoubleCodec INSTANCE = new DoubleCodec(); |
| |
| private static final EnumSet<DataType> COMPATIBLE_TYPES = |
| EnumSet.of( |
| DataType.TINYINT, |
| DataType.SMALLINT, |
| DataType.MEDIUMINT, |
| DataType.INTEGER, |
| DataType.FLOAT, |
| DataType.DOUBLE, |
| DataType.BIGINT, |
| DataType.YEAR, |
| DataType.OLDDECIMAL, |
| DataType.DECIMAL, |
| DataType.VARCHAR, |
| DataType.VARSTRING, |
| DataType.STRING, |
| DataType.BLOB, |
| DataType.TINYBLOB, |
| DataType.MEDIUMBLOB, |
| DataType.LONGBLOB); |
| |
| public String className() { |
| return Double.class.getName(); |
| } |
| |
| public boolean canDecode(ColumnDecoder column, Class<?> type) { |
| return COMPATIBLE_TYPES.contains(column.getType()) |
| && ((type.isPrimitive() && type == Double.TYPE) || type.isAssignableFrom(Double.class)); |
| } |
| |
| public boolean canEncode(Object value) { |
| return value instanceof Double; |
| } |
| |
| @Override |
| @SuppressWarnings("fallthrough") |
| public Double decodeText(ReadableByteBuf buf, int length, ColumnDecoder column, Calendar cal) |
| throws SQLDataException { |
| return column.decodeDoubleText(buf, length); |
| } |
| |
| @Override |
| @SuppressWarnings("fallthrough") |
| public Double decodeBinary(ReadableByteBuf buf, int length, ColumnDecoder column, Calendar cal) |
| throws SQLDataException { |
| return column.decodeDoubleBinary(buf, length); |
| } |
| |
| @Override |
| public void encodeText(Writer encoder, Context context, Object value, Calendar cal, Long maxLen) |
| throws IOException { |
| encoder.writeAscii(value.toString()); |
| } |
| |
| @Override |
| public void encodeBinary(Writer encoder, Object value, Calendar cal, Long maxLength) |
| throws IOException { |
| encoder.writeDouble((Double) value); |
| } |
| |
| public int getBinaryEncodeType() { |
| return DataType.DOUBLE.get(); |
| } |
| } |