This document describes the installation steps for enabling the use of
the Natural statements REQUEST DOCUMENT and PARSE XML
on z/VSE.
For information on the functions provided by REQUEST
DOCUMENT and PARSE XML, see the following documents:
Statements for Internet and XML Access in the Programming Guide
REQUEST
DOCUMENT in the Statements
documentation
PARSE XML in
the Statements documentation
The following requirements must be met to execute the REQUEST
DOCUMENT and PARSE XML statements:
The ICU library must be installed to convert data from one encoding to another (at least internally). For details, see the relevant section in the Unicode and Code Page Support documentation.
A TCP/IP stack must be available and enabled for the execution environment.
A DNS (Domain Name System) server or DNS services must be available in
the execution environment to resolve internet addresses
(gethostbyname function).
For Internet Protocol Version 6 (IPv6) support, the following additional prerequisites apply:
An activated IPv6 stack must be available on the local host.
The local network must support IPv6.
An accessible and IPv6-capable DNS server must be available.
For IPv6 internet communication, an IPv6 connection from the service provider must be available.
If both IPv4 and IPv6 are used, a dual stack must be supported.
IPv6 support must be configured with the appropriate keyword
subparameters of the Natural profile parameter
XML
described in the Parameter Reference documentation.
See also General Prerequisites and System Support in the section Overview of the Installation Process.
Be sure to read Installation Process and Major Natural Features before you start the installation procedure.
The installation procedure comprises the following:
The module NATXML is required to execute
the statements REQUEST DOCUMENT and PARSE XML. If you want the PARSE XML statement to support IBM
architecture level 9, alternatively, you can use the module
NATXMLA9. See also Support for Architecture
Levels.
Set the System
Maintenance Aid (SMA) parameter NATXML to
Y (default is N).
The NATXML module is then linked to the
environment-independent
nucleus by using the following INCLUDE statement:
INCLUDE NATXML
Or:
For support of IBM architecture level 9:
Set the SMA
parameters NATXML and
NAT-ARCHLEVEL9 to Y (default is
N).
The alternative NATXMLA9 module is then linked to the
environment-independent
nucleus by using the following INCLUDE statement:
INCLUDE NATXMLA9
The REQUEST DOCUMENT and PARSE XML statements
require the IBM Language Environment (LE) for
execution. If you want Natural to run in the IBM Language
Environment (LE), perform the following steps:
Set the System
Maintenance Aid (SMA) parameter NAT-LE to
Y (Yes). The default setting is N (No).
Additionally, if you want to modify the LE options in the
NATLEOPT source module or if you use non-Natural programs running
in 24-bit mode, set the appropriate SMA parameter as described in
Build the Natural-Specific IBM
Language Environment Options in Installing
Natural.
Link the environment-dependent nucleus to support LE.
This applies to all batch and TP monitor system environments except Com-plete.
Link the modules indicated in this section to the nucleus depending on the environment to be used.
Add the LE library (usually PRD2.SCEEBASE) to the
OBJ-SEARCH definition of the link job to resolve the references to
LE functions.
Link the following LE and TCP/IP access modules to the
environment-dependent
nucleus by using the appropriate INCLUDE statement:
INCLUDE NAT2LE
Do not specify the NOAUTO parameter
in the ACTION statement for the link step.
If you use the BSI TCP/IP, set the following in the linkage job:
INCLUDE NAT2TCP
If you use a z/VSE version older than Version 5.2 or an BSI TCP/IP stack older than Version 2.5.5, set the following in the linkage job.
INCLUDE NAT2TCP4
Link the following LE access module to the
environment-dependent
nucleus by using the appropriate INCLUDE statement:
INCLUDE NAT2LE
Copy the NCFTCPvr phase to
the Com-plete/SMARTS load library.
For support of the IBM TCP/IP stack, define the CDI (Communication Driver Interface) as described in Standard CDI Definitions in the Com-plete documentation.
Add the POSIX SERVER statement to the Com-plete
parameter module SYSPARM.
If your Natural system runs on z/OS or z/VSE with an IBM processor with
architecture level 9 or higher, you can replace the module NATXML
by NATXMLA9. NATXMLA9 is built to use advanced
machine instructions introduced with IBM’s ESA/390 and z/Architecture. You can
use the system command TECH (see the
System Commands documentation) to find out the
architecture level supported on your current machine.
NATXMLA9 improves execution performance, especially for the
statements REQUEST DOCUMENT and PARSE XML that use
Unicode variables or perform code-page encoding operations. For more
information on architecture levels, refer to the related documentation from IBM
(z/Architecture, Principles of Operation).
 |
Warning: An operation exception error (abend code S0C1) can occur if the NATXMLA9 module is used, but the underlying machine architecture
level is lower than 9. |
After the last step of the installation procedure has been completed, proceed as follows:
Activate the statements in the runtime environment; see Activation/Deactivation in the section Statements for Internet and XML Access in the Programming Guide.
For information on the profile settings that enable the support of the
REQUEST DOCUMENT
and/or PARSE XML
statement, see the following documents:
Profile Settings in the section Statements for Internet and XML Access in the Programming Guide
Profile parameter XML in the
Parameter Reference documentation
Try the example programs contained in the Natural system library
SYSEXV.