The APIs for sending and receiving data can be classified into the three types described below. Use the one best suited to the custom adaptor being created.

• Common APIs
  These APIs are used for creating both RMI connection custom adaptors and in-process connection custom adaptors.
  
• RMI connection API
  This API is used for creating RMI connection custom adaptors.
  
• In-process connection APIs
  These APIs are used for creating in-process connection custom adaptors.
  

The interfaces and classes of the APIs for sending and receiving data are listed below.

Table 7-1 List of APIs for sending and receiving data (interface)

No.	Package name	Interface name	Function	Type
1	jp.co.Hitachi.soft.sdp.api	SDPConnector	Interface for the connector that attaches a custom adaptor to the SDP server. Used for connecting to an input stream or output stream.	Common API
2		StreamInput	Interface used for sending stream data to the SDP server and for disconnecting from the input stream	Common API
3		StreamOutput	Interface used for receiving query results from the SDP server, for registering or unregistering listener objects for callback, and for disconnecting from the output stream	Common API
4	jp.co.Hitachi.soft.sdp.api.inprocess	StreamEventListener	Interface for implementing the process to be used for callbacks	In-process connection API
5		StreamInprocessUP	Interface for implementing the main process, which is equivalent to a custom adaptor's main method. The implementing class of the StreamInprocessUP interface is loaded and executed when the SDP server is started.	In-process connection API

Table 7-2 List of APIs for sending and receiving data (class)

No.	Package name	Class name	Function	Type
1	jp.co.Hitachi.soft.sdp.api	SDPConnectorFactory	Class for generating an SDPConnector type object	RMI connection API
2	jp.co.Hitachi.soft.sdp.common.util	StreamTime	Class for specifying date and time	Common API
3	jp.co.Hitachi.soft.sdp.common.data	StreamTuple	Class for expressing a stream tuple	Common API

These interfaces and classes are explained in alphabetic order below.