Reference - HTTP and Java Interface

This document covers the following topics:

Client Using the Java Interface
The Java Interface
The HTTP Interface

Client Using the Java Interface

See also the delivered example XMMInvoker and XMLRPCService (EntireX XML/SOAP Runtime).

Step 1: Writing the Client Program

Start of instruction set To write the client program

Initialize the Broker Object:

Broker broker = new Broker(brokerID, userID);
// if a logon should be issued
 broker.logon(password);

Initialize the XMLRPCService Object:

XMLRPCService service;
service = new XMLRPCService(xmmfilename);//constructor with XMM

XMLRPCService service;
service = new XMLRPCService(broker, serverName, xmmfilename);

Initialize the Conversation Object:

For one XMLRPCService, only one conversation may be used at a time.
```
  private Conversation conv;
  conv = new Conversation(service);
```

Assign the incoming XML document:

String xmlDocument = "<?xml version="1.0" encoding="iso8859-1"?>" +
"<CALC Operation=\"-\" Operand_1=\"1000000611\"
Operand_2=\"1000000288\"></CALC>";

Invoke the Service.

Non-conversational:

try
{
  String result = service.invokeXML(xmlDocument);
}
catch (XMLException e)
{
   // Error handling ...
}
catch (BrokerException e)
{
  // Error handling ...
}
catch (Exception e)
{
  // Error handling ...
}

Conversational:

try
{
  service.setConversation(conv);
  String result = service.invokeXML(xmlFromFile(filename));
  service.closeConversationCommit();
}
catch (XMLException e)
{
   // Error handling ...
}
catch (BrokerException e)
{
  // Error handling ...
}
catch (Exception e)
{
  // Error handling ...
}

The string result contains the returned document. It should be:

<CALC Function_result="899" />

Step 2: Running the Client Program

The definition of the Java classpath must include

the generated XMM file, see Generating an XMM File
the entirex.jar file (delivered in the directory <EntireX Home>/classes)
the files for an XMLStreamParser, for example the delivered wstx-asl.jar and stax-api.jar (in the directory <EntireX Home>/classes)

The Java Interface

Class XMLRPCService

XMLRPCService extends com.softwareag.entirex.aci.RPCService. See XMLRPCService (EntireX XML/SOAP Runtime).

The HTTP Interface

The Listener for XML/SOAP supports HTTP POST Request and HTTP GET Request. The following HTTP headers and parameters are available. Use them from the EntireX XML Tester or other third-party XML tools:

Header/Parameter	Direction	Description
`exx-brokerID`	IN	If this attribute is set, it overwrites both the properties of the XMM file and the settings of the servlet initialization.
`exx-service`	IN	The service name is the triplet of server class/server name/service. If this attribute is set, it overwrites both the properties of the XMM file and the settings of the servlet initialization.
`exx-userID`	IN	The user ID specified here is used for calling the broker.
`exx-password`	IN	The password specified here is used for calling the broker.
`exx-use-security`	IN	Deprecated. An internal automatic routine makes this parameter obsolete. Possible values: `true` \| `false`.
`exx-rpc-userID`	IN	The RPC user ID specified here is used for Natural Security. If no RPC user ID and no RPC password is defined, the values of `exx-userID` and `exx-password` are used for these values.
`exx-rpc-password`	IN	The RPC password specified here is used for Natural Security. If no RPC user ID and no RPC password is defined, the values of `exx-userID` and `exx-password` are used for these values.
`exx-natural-security`	IN	Possible values: `true` \| `false`. Determines whether Natural Security is used. See Using the Broker and RPC User ID/Password.
`exx-natural-library`	IN	The Natural library. Applicable only if `exx-natural-security` is "`true`". See Using the Broker and RPC User ID/Password.
`exx-use-codepage`	IN	Determines the encoding the Listener for XML/SOAP uses to communicate with EntireX Broker. See RPC Call (Broker Request) in the Listener for XML/SOAP documentation.
`exx-compresslevel`	IN	Sets the compression level. See Using Compression under Writing Advanced Applications - EntireX Java ACI.
`exx-compression`	IN	Possible values: `true` \|`false`. See Using Compression.
`exx-xml-sessionID`	IN OUT	This HTTP header is returned from the servlet to the client application. If the client returns it to the servlet with the preceding call, the same session will be used. For conversations, the `exx-conv` parameter is also required.
`exx-xml-info`	OUT	In this HTTP header additional information is returned.
`exx-xml-error`	OUT	In this HTTP header error information is returned.
`exx-conv`	IN	Possible values: `OPEN` \| `COMMIT` \| `BACKOUT`. Conversations can only be used in connection with sessions. If the session is interrupted, the conversation is deleted.
`exx-reliable`	IN	Possible values: `AUTO-COMMIT` \| `OFF`. See Reliable RPC for XML/SOAP Wrapper.