Package org.yamcs.yarch

Interface ColumnSerializer<T>

Type Parameters:

T -

All Known Implementing Classes:

ParameterValueColumnSerializer

public interface ColumnSerializer<T>

Serializes column values to byte arrays (used as part of tables) and back

Method Summary

Modifier and Type	Method	Description
T	deserialize(DataInputStream stream, ColumnDefinition cd)	Read one column value (i.e. a cell from the stream) The enums are deserialized as shorts (it is converted to the actual type in the TableDefinition.deserialize(byte[], byte[]))
T	deserialize(ByteBuffer byteBuf, ColumnDefinition cd)	Same as above but read the data from a ByteBuffer.
T	fromByteArray(byte[] b, ColumnDefinition cd)	this method deserializes the value from a byte array
void	serialize(DataOutputStream stream, T v)
void	serialize(ByteBuffer byteBuf, T v)	Same as above but serialize into a bytebuffer.
byte[]	toByteArray(T v)	This method serializes the value into a byte array

Method Detail

deserialize

T deserialize(DataInputStream stream,
              ColumnDefinition cd)
       throws IOException

Read one column value (i.e. a cell from the stream) The enums are deserialized as shorts (it is converted to the actual type in the TableDefinition.deserialize(byte[], byte[]))

Parameters:

stream - - data stream used for the input

cd - the column definition for the involved column (can be used to look up column name or other properties to help in deserialization)

Returns:

the deserialized value

Throws:

IOException

deserialize

T deserialize(ByteBuffer byteBuf,
              ColumnDefinition cd)
       throws IOException

Same as above but read the data from a ByteBuffer.

If the buffer is not long enough, it throws an BufferUnderflowException.

Parameters:

byteBuf -

cd -

Returns:

Throws:

IOException

serialize

void serialize(DataOutputStream stream,
               T v)
        throws IOException

Parameters:

stream -

v -

Throws:

IOException

serialize

void serialize(ByteBuffer byteBuf,
               T v)
        throws BufferOverflowException

Same as above but serialize into a bytebuffer. If the ByteBuffer is not large enough, a BufferOverflowException will be thrown.

Parameters:

byteBuf -

v -

Throws:

BufferOverflowException

toByteArray

byte[] toByteArray(T v)

This method serializes the value into a byte array

Parameters:

v -

Returns:

the resulting byte array

fromByteArray

T fromByteArray(byte[] b,
                ColumnDefinition cd)
         throws IOException

this method deserializes the value from a byte array

Parameters:

b - the input byte array

cd - the column definition for the involved column (can be used to look up column name or other properties to help in deserialization)

Returns:

the deserialized value

Throws:

IOException