com.db4o.marshall

Interface WriteContext

All Superinterfaces:

Context, WriteBuffer

All Known Implementing Classes:

MarshallingContext

public interface WriteContext
extends Context, WriteBuffer

this interface is passed to internal class TypeHandler4 during marshaling and provides methods to marshal objects.

Method Summary

Methods

Modifier and Type	Method and Description
ReservedBuffer	reserve(int length) reserves a buffer with a specific length at the current position, to be written in a later step.
void	writeObject(java.lang.Object obj) makes sure the object is stored and writes the ID of the object to the context.
void	writeObject(TypeHandler4 handler, java.lang.Object obj) writes sub-objects, in cases where the TypeHandler4 is known.

Methods inherited from interface com.db4o.marshall.Context

objectContainer, transaction

Methods inherited from interface com.db4o.marshall.WriteBuffer

writeByte, writeBytes, writeInt, writeLong

Method Detail

writeObject

void writeObject(java.lang.Object obj)

makes sure the object is stored and writes the ID of the object to the context. Use this method for first class objects only (objects that have an identity in the database). If the object can potentially be a primitive type, do not use this method but use a matching WriteBuffer method instead.

Parameters:

obj - the object to write.

writeObject

void writeObject(TypeHandler4 handler,
               java.lang.Object obj)

writes sub-objects, in cases where the TypeHandler4 is known.

Parameters:

handler - typehandler to be used to write the object.

obj - the object to write

reserve

ReservedBuffer reserve(int length)

reserves a buffer with a specific length at the current position, to be written in a later step.

Parameters:

length - the length to be reserved.

Returns:

the ReservedBuffer