private int[] readMetadata(ByteArrayInputStream inputStream, byte[] columnTypes)
throws IOException {
int[] metadata = new int[columnTypes.length];
for (int i = 0; i < columnTypes.length; i++) {
switch (ColumnType.byCode(columnTypes[i] & 0xFF)) {
case FLOAT:
case DOUBLE:
case BLOB:
case JSON:
case GEOMETRY:
metadata[i] = inputStream.readInteger(1);
break;
case BIT:
case VARCHAR:
case NEWDECIMAL:
metadata[i] = inputStream.readInteger(2);
break;
case SET:
case ENUM:
case STRING:
metadata[i] = bigEndianInteger(inputStream.read(2), 0, 2);
break;
case TIME_V2:
case DATETIME_V2:
case TIMESTAMP_V2:
metadata[i] = inputStream.readInteger(1); // fsp (@see {@link ColumnType})
break;
default:
metadata[i] = 0;
}
}
return metadata;
}
private List<Serializable[]> deserializeRows(
long tableId, BitSet includedColumns, ByteArrayInputStream inputStream) throws IOException {
List<Serializable[]> result = new LinkedList<Serializable[]>();
while (inputStream.available() > 0) {
result.add(deserializeRow(tableId, includedColumns, inputStream));
}
return result;
}
@Override
public TableMapEventData deserialize(ByteArrayInputStream inputStream) throws IOException {
TableMapEventData eventData = new TableMapEventData();
eventData.setTableId(inputStream.readLong(6));
inputStream.skip(3); // 2 bytes reserved for future use + 1 for the length of database name
eventData.setDatabase(inputStream.readZeroTerminatedString());
inputStream.skip(1); // table name
eventData.setTable(inputStream.readZeroTerminatedString());
int numberOfColumns = inputStream.readPackedInteger();
eventData.setColumnTypes(inputStream.read(numberOfColumns));
inputStream.readPackedInteger(); // metadata length
eventData.setColumnMetadata(readMetadata(inputStream, eventData.getColumnTypes()));
eventData.setColumnNullability(inputStream.readBitSet(numberOfColumns, true));
return eventData;
}
@Override
public DeleteRowsEventData deserialize(ByteArrayInputStream inputStream) throws IOException {
DeleteRowsEventData eventData = new DeleteRowsEventData();
eventData.setTableId(inputStream.readLong(6));
inputStream.readInteger(2); // reserved
if (mayContainExtraInformation) {
int extraInfoLength = inputStream.readInteger(2);
inputStream.skip(extraInfoLength - 2);
}
int numberOfColumns = inputStream.readPackedInteger();
eventData.setIncludedColumns(inputStream.readBitSet(numberOfColumns, true));
eventData.setRows(
deserializeRows(eventData.getTableId(), eventData.getIncludedColumns(), inputStream));
return eventData;
}
