NonStop Server for Java 4.2 Programmer's Reference

For detailed information on HP drivers that provide to access SQL/MX or SQL/MP, see the JDBC driver
manuals in the NonStop Technical Library.
JToolkit for NonStop Servers
The HP JToolkit for NonStop Servers includes three APIs as tools for using Java programs to access
legacy applications on NonStop servers. JToolkit also includes Scalable TCP/IP (SIP) for developing
network servers written in Java. The following paragraphs introduce these tools. For complete
information on them, see the JToolkit Programmer's Reference in the NonStop Technical Library.
Enscribe API for Java
The Enscribe API for Java allows access the Enscribe database manager, supported by the Guardian file
system. This access is typically used to interact with legacy applications.
Pathway API for Java
The Pathway API for Java provides access to a special file called $RECEIVE, which is needed to enable
a process to act as a Pathway server. These servers are typically used in legacy applications. Pathway
server programs read requests from requester programs and act on those requests. The Guardian
requester/server model, is described fully in the TS/MP Pathsend and Server Programming Manual.
A process sends a message to another process by opening the recipient process file and writing a message
to it. Because a process might not know in advance which processes will send messages to it and in
which order, all messages to a process arrive using a single file-system connection. A process receives a
message-whether the message is a request from another user process or a system message-by reading
from $RECEIVE.
Pathsend API for Java
The NonStop Transaction Services/MP (NonStop TS/MP) product supports the use of Pathway servers to
access NonStop SQL or Enscribe databases in an online transaction processing (OLTP) environment.
Using the Pathsend API for Java, programs can send requests to these Pathway servers and receive
replies from them. Pathway servers can be written in C, COBOL, or Java.
Scalable TCP/IP
Scalable TCP/IP (SIP) for the NonStop Server for Java provides a transparent way to give the NonStop
fundamentals of scalability and persistence to a network server (SIP server) written in Java. Existing
servers written in Java and their clients can take advantage of SIP without being changed.