JT400

JT/400 Component

The jt400 component allows you to exchanges messages with an AS/400 system using data queues.

URI format

jt400://user:password@system/QSYS.LIB/LIBRARY.LIB/QUEUE.DTAQ[?options]

To call a remote program (Camel 2.7)

jt400://user:password@system/QSYS.LIB/LIBRARY.LIB/program.PGM[?options]

You can append query options to the URI in the following format, ?option=value&option=value&...

URI options

For the data queue message exchange:

Table 58. Message exchange uri options

Name Default value Description
ccsid default system CCSID Specifies the CCSID to use for the connection with the AS/400 system.
format text Specifies the data format for sending messages valid options are: text (represented by String) and binary (represented by byte[])
consumer.delay 500 Delay in milliseconds between each poll.
consumer.initialDelay 1000 Milliseconds before polling starts.
consumer.userFixedDelay false true to use fixed delay between polls, otherwise fixed rate is used. See ScheduledExecutorService in JDK for details.
guiAvailable false Specifies whether AS/400 is available in the environment running Camel.
keyed false Specifies whether to use keyed or nonkeyed data queues.
searchKey null Specifies the search key to use for keyed data queues.
searchType EQ Specifies the search type. Valid values are EQ, NE, LT, LE, GT, or GE.
connectionPool AS400ConnectionPool instance Reference to a com.ibm.as400.access.AS400ConnectionPool instance in the Registr, which is used for obtaining connections to the AS/400 system. The lookup notation ('#' character) should be used.

For the remote program call (Camel 2.7):

Table 59. RPC uri options

Name Default value Description
outputFieldsIdx   Specifies which fields (program parameters) are output parameters.
fieldsLength   Specifies the fields (program parameters) length as in the AS/400 program definition.

Usage

When configured as a consumer endpoint, the endpoint will poll a data queue on a remote system. For every entry on the data queue, a new Exchange is sent with the entry's data in the In message's body, formatted either as a String or a byte[], depending on the format. For a provider endpoint, the In message body contents will be put on the data queue as either raw bytes or text.

Remote program call (Camel 2.7)

This endpoint expects the input to be a String array and handles all the CCSID handling trough the native jt400 library mechanisms. After the program execution the endpoint returns a String array with the values as they were returned by the program (the input only parameters will contain the same data as the beginning of the invocation) This endpoint does not implement a provider endpoint!

Example

In the snippet below, the data for an exchange sent to the direct:george endpoint will be put in the data queue PENNYLANE in library BEATLES on a system named LIVERPOOL. Another user connects to the same data queue to receive the information from the data queue and forward it to the mock:ringo endpoint.

public class Jt400RouteBuilder extends RouteBuilder {

    @Override
    public void configure() throws Exception {
       from("direct:george").to("jt400://GEORGE:EGROEG@LIVERPOOL/QSYS.LIB/BEATLES.LIB/PENNYLANE.DTAQ");
       from("jt400://RINGO:OGNIR@LIVERPOOL/QSYS.LIB/BEATLES.LIB/PENNYLANE.DTAQ").to("mock:ringo");
    }
}

Remote program call example (Camel 2.7)

In the snippet below, the data Exchange sent to the direct:work endpoint will contain three string that will be used as the arguments for the program "compute" in the library "assets". This program will write the output values in the 2nd and 3rd parameters. All the parameters will be sent to the direct:play endpoint.

public class Jt400RouteBuilder extends RouteBuilder {
    @Override
    public void configure() throws Exception {
       from("direct:work").to("jt400://GRUPO:ATWORK@server/QSYS.LIB/assets.LIB/compute.PGM?fieldsLength=10,10,512&ouputFieldsIdx=2,3").to("direct:play");
    }
}