DFHSC2LS: XML schema to high-level language conversion

The DFHSC2LS cataloged procedure generates a high-level language data structure and an XML binding from an XML schema or WSDL document. Use DFHSC2LS when you want to create a CICS® program that can parse or create XML. The job control statements for DFHSC2LS, its symbolic parameters, its input parameters and their descriptions are listed.

Job control statements for DFHSC2LS

JOB
Starts the job.
EXEC
Specifies the procedure name (DFHSC2LS).
INPUT.SYSUT1 DD
Specifies the input. The input parameters are usually specified in the input stream. However, you can define them in a data set or in a member of a partitioned data set.

Symbolic parameters

The following symbolic parameters are defined in DFHSC2LS:
JAVADIR=path
Specifies the name of the Java™ directory that is used by DFHSC2LS. The value of this parameter is appended to /usr/lpp/ giving a complete path name of /usr/lpp/path.
Typically, you do not specify this parameter. The default value is the value that was supplied to the CICS installation job (DFHISTAR) in the JAVADIR parameter.
PATHPREF=prefix
Specifies an optional prefix that extends the z/OS® UNIX directory path used on other parameters. The default is the empty string.
Typically, you do not specify this parameter. The default value is the value that was supplied to the CICS installation job (DFHISTAR) in the JAVADIR parameter.
TMPDIR=tmpdir
Specifies the location of a directory in z/OS UNIX that DFHSC2LS uses as a temporary work space. The user ID under which the job runs must have read and write permission to this directory.
The default value is /tmp.
TMPFILE=tmpprefix
Specifies a prefix that DFHSC2LS uses to construct the names of the temporary workspace files.
The default value is SC2LS.
USSDIR=path
Specifies the name of the CICS TS directory in the z/OS UNIX file system. The value of this parameter is appended to /usr/lpp/cicsts/ giving a complete path name of /usr/lpp/cicsts/path.
Typically, you do not specify this parameter. The default value is the value that was supplied to the CICS installation job (DFHISTAR) in the USSDIR parameter.
SERVICE=value
Use this parameter only when directed to do so by IBM® support.

The temporary work space

DFHSC2LS creates the following three temporary files at run time:
  • tmpdir/tmpprefix.in
  • tmpdir/tmpprefix.out
  • tmpdir/tmpprefix.err
where:
  • tmpdir is the value specified in the TMPDIR parameter.
  • tmpprefix is the value specified in the TMPFILE parameter.
The default names for the files (when TMPDIR and TMPFILE are not specified), are as follows:
  • /tmp/SC2LS.in
  • /tmp/SC2LS.out
  • /tmp/SC2LS.err
Important: DFHSC2LS does not lock access to the z/OS UNIX files or the dataset members. Therefore, if two or more instances of DFHSC2LS run concurrently, and use the same temporary workspace files, nothing prevents one job from overwriting the workspace files while another job is using them, leading to unpredictable failures.

Therefore, you are advised to devise a naming convention and operating procedures that avoid this situation; for example, you can use the system symbolic parameter SYSUID to generate workspace file names that are unique to an individual user.

These temporary files are deleted before the end of the job.

Input parameters for DFHSC2LS

Read syntax diagramSkip visual syntax diagramCCSID= valueDATA-SCREENING=ENABLEDDATA-SCREENING=DISABLEDELEMENTS=ALLELEMENTS= valueHTTPPROXY=domain nameIP address: port numberHTTPPROXY-USERNAME= valueHTTPPROXY-PASSWORD= valueLANG=COBOLLANG=PLI-ENTERPRISELANG=PLI-OTHERLANG=CLANG=CPPBUNDLE= valueLOGFILE= valueMAPPING-LEVEL=1.0MAPPING-LEVEL=1.1MAPPING-LEVEL=1.2Advanced data mapping (mapping level 1.2 and higher)MAPPING-LEVEL=2.0Advanced data mapping (mapping level 1.2 and higher)MAPPING-LEVEL=2.1Advanced data mapping (mapping level 2.1 and higher)MAPPING-LEVEL=2.2Advanced data mapping (mapping level 2.1 and higher)MAPPING-LEVEL=3.0Advanced data mapping (mapping level 3.0 and higher)MAPPING-LEVEL=4.0Advanced data mapping (mapping level 4.0 and higher)MAPPING-LEVEL=4.1Advanced data mapping (mapping level 4.1 and higher)MAPPING-OVERRIDES=SAME-AS-MAPPING-LEVELUNDERSCORES-AS-HYPHENSNO-ARRAY-NAME-INDEXINGMINIMUM-RUNTIME-LEVEL=MINIMUMMINIMUM-RUNTIME-LEVEL=3.0MINIMUM-RUNTIME-LEVEL=4.0MINIMUM-RUNTIME-LEVEL=4.1MINIMUM-RUNTIME-LEVEL=CURRENTOVERWRITE-OUTPUT= NOOVERWRITE-OUTPUT= YESPDSCP= valuePDSLIB= valuePDSMEM= valueSCHEMA= valueWSDL= valueSTRUCTURE= PDSMEM_valueSTRUCTURE= dataTYPES= valueXMLCP=LOCALXMLCP=UTF-8XMLCP=EBCDIC-CP-USXSDBIND= valueWIDE-COMP3=NOWIDE-COMP3= YES
Advanced data mapping (mapping level 1.2 and higher)
Read syntax diagramSkip visual syntax diagramCHAR-VARYING=NOCHAR-VARYING=NULLCHAR-VARYING=YESCHAR-VARYING-LIMIT=32767CHAR-VARYING-LIMIT= valueCHAR-MULTIPLIER=1CHAR-MULTIPLIER= valueDEFAULT-CHAR-MAXLENGTH=255DEFAULT-CHAR-MAXLENGTH= valueDEFAULT-FRACTION-DIGITS=3DEFAULT-FRACTION-DIGITS= value
Advanced data mapping (mapping level 2.1 and higher)
Read syntax diagramSkip visual syntax diagramINLINE-MAXOCCURS-LIMIT=1INLINE-MAXOCCURS-LIMIT= value
Advanced data mapping (mapping level 3.0)
Read syntax diagramSkip visual syntax diagramDATETIME=PACKED15DATETIME=STRINGDATA-TRUNCATION=DISABLEDDATA-TRUNCATION=ENABLED

Parameter use

  • You can specify the input parameters in any order.
  • Each parameter must start on a new line.
  • A parameter (and its continuation character, if you use one) must not extend beyond column 72; columns 73 to 80 must contain blanks.
  • If a parameter is too long to fit on a single line, use an asterisk (*) character at the end of the line to indicate that the parameter continues on the next line. Everything (including spaces) before the asterisk is considered part of the parameter. For example:
    XSDBIND=xsdbinddir*
    /app1
    is equivalent to
    XSDBIND=xsdbinddir/app1
  • A # character in the first character position of the line is a comment character. The line is ignored.

Parameter descriptions

BUNDLE=value
Specifies the path and name of the bundle directory on z/OS UNIX. If you specify this value, the XML assistant generates the XML binding in the bundle directory and creates a bundle manifest for you. The path information on this parameter overrides any path information on the XSDBIND parameter. If you do not specify this parameter, CICS places the XML binding in the specified location.
CCSID=value
Specifies the CCSID that is used at run time to encode character data in the application data structure. The value of this parameter overrides the value of the LOCALCCSID system initialization parameter. The value must be an EBCDIC CCSID that is supported by Java and z/OS conversion services (see z/OS Unicode Services User's Guide and Reference). If you do not specify this parameter, the application data structure is encoded using the CCSID specified in the system initialization parameter.

You can use this parameter with any mapping level. However, if you want to deploy the generated files into a CICS TS 3.1 region, you must apply APAR PK23547 to achieve the minimum runtime level of code to install the web service binding file.

CHAR-MULTIPLIER={1|value}
Specifies the number of bytes to allow for each character when the mapping level is 1.2 or later. The value of this parameter can be a positive integer in the range of 1 - 2,147,483,647. All nonnumeric character-based mappings, are subject to this multiplier. Binary, numeric, zoned, and packed decimal fields are not subject to this multiplier.

This parameter can be useful if, for example, you are planning to use DBCS characters where you might opt for a multiplier of 3 to allow space for potential shift-out and shift-in characters around every double-byte character at run time.

Start of change When you set CCSID=1200 (indicating UTF-16), the only valid values for CHAR-MULTIPLIER are 2 or 4. When you use UTF-16, the default value is 2. Use CHAR-MULTIPLIER=2 when you expect application data to contain characters that require 1 UTF-16 encoding unit. Use CHAR-MULTIPLIER=4 when you expect application data to contain characters that require 2 UTF-16 encoding units.
Note: Setting CHAR-MULTIPLIER to 1 does not preclude the use of DBCS characters, and setting it to 2 does not preclude the use of UTF-16 surrogate pairs. However, if wide characters are routinely used then some valid values will not fit into the allocated field. If a larger CHAR-MULTIPLIER value is used, it can be possible to store more characters in the allocated field than are valid in the XML. Care must be taken to conform to the appropriate range restrictions.
End of change
CHAR-VARYING={NO|NULL|YES}
Specifies how variable-length character data is mapped when the mapping level is 1.2 or higher. Variable-length binary data types are always mapped to either a container or a varying structure. If you do not specify this parameter, the default mapping depends on the language specified. You can select these options:
NO
Variable-length character data is mapped as fixed-length strings.
NULL
Variable-length character data is mapped to null-terminated strings.
YES
Variable-length character data is mapped to a CHAR VARYING data type in PL/I. In the COBOL, C, and C++ languages, variable-length character data is mapped to an equivalent representation that consists of two related elements: the data-length and the data.
CHAR-VARYING-LIMIT={32767|value}
Specifies the maximum size of binary data and variable-length character data that is mapped to the language structure when the mapping level is 1.2 or higher. If the character or binary data is larger than the value specified in this parameter, it is mapped to a container and the container name is used in the generated language structure. The value can range from 0 to the default 32 767 bytes.
Start of change DATA-SCREENING = { ENABLED | DISABLED } End of change
Start of change Specifies whether application supplied data is screened for errors.
ENABLED
Any application-supplied runtime data that is inconsistent with the language structure, is treated as an error and message DFHPI1010 is issued. An error response is returned to the application.
DISABLED
Data values in application-supplied runtime data that are inconsistent with the language structure are replaced by default values. For example, a zero replaces a bad value in a numeric field. Message DFHPI1010 is not issued and a normal response is returned to the application. This feature can be used to avoid INVALID_PACKED_DEC and INVALID_ZONED_DEC error responses that are generated from uninitialized output fields.
End of change
DATA-TRUNCATION={DISABLED|ENABLED}
Specifies if variable length data is tolerated in a fixed length field structure:
DISABLED
If the data is less than the fixed length that CICS is expecting, CICS rejects the truncated data and issues an error message.
ENABLED
If the data is less than the fixed length that CICS is expecting, CICS tolerates the truncated data and processes the missing data as null values.
DATETIME={PACKED15|STRING}
Specifies that xsd:dateTime fields are mapped to CICS ABSTIME data format or to text:
PACKED15
xsd:dateTime fields are mapped to CICS ABSTIME format.
STRING
xsd:dateTime fields are mapped to text. This mapping is the same as all previous mappings levels.
You can use this parameter at a mapping level of 3.0.
DEFAULT-CHAR-MAXLENGTH={255|value}
Specifies the default array length of character data in characters for mappings where no length is implied in the XML schema document or WSDL document, when the mapping level is 1.2 or higher. The value of this parameter can be a positive integer in the range of 1 to 2 147 483 647.
Start of changeDEFAULT-FRACTION-DIGITS=3|valueEnd of change
Start of changeSpecifies the default number of fraction digits to use on an XML decimal schema type. The default is 3. For COBOL, the valid range is 0-17, or 0-30 if parameter WIDE-COMP3 is being used. For C or PLI the valid range is 0-30.End of change
ELEMENTS={ALL|value}
Defines a list of global element local names to enable. The default value of ALL indicates that all global elements are enabled.
HTTPPROXY={domain name|IP address}:port number
If your XML schema or WSDL document contains references to other XML schema or WSDL files that are located on the Internet, and the system on which you are running DFHSC2LS uses a proxy server to access the Internet, specify either the domain name or IP address and the port number of the proxy server. For example:
HTTPPROXY=proxy.example.com:8080

In other cases, this parameter is not required.

HTTPPROXY-USERNAME=value
Specifies the HTTP proxy user name to be used with HTTPPROXY-PASSWORD if the system on which you are running DFHSC2LS uses an HTTP proxy server to access the Internet, and the HTTP proxy server uses basic authentication. You can use this parameter only when you also specify HTTPPROXY.
HTTPPROXY-PASSWORD=value
Specifies the HTTP proxy password to be used with HTTPPROXY-USERNAME if the system on which you are running DFHSC2LS uses an HTTP proxy server to access the Internet, and the HTTP proxy server uses basic authentication. You can use this parameter only when you also specify HTTPPROXY.
INLINE-MAXOCCURS-LIMIT={1|value}
Specifies whether inline variable repeating content is used based on the maxOccurs attribute of the XML attribute.

The INLINE-MAXOCCURS-LIMIT parameter is available only at mapping level 2.1 onwards. The value of INLINE-MAXOCCURS-LIMIT can be a positive integer in the range of 0 to 32 767. A value of 0 indicates that inline mapping is not used. A value of 1 ensures that optional elements are mapped inline. If the value of the maxOccurs attribute is greater than the value of INLINE-MAXOCCURS-LIMIT, container based mapping is used; otherwise, inline mapping is used.

When deciding if you want variably repeating lists to be mapped inline, consider the length of a single item of recurring data. If you have few instances of long length, container-based mapping is preferable; if you have many instances of short length, inline mapping is likely to be preferable.

For more information on variably repeating content, see Variable arrays of elements.

LANG=COBOL
Specifies that the programming language of the high-level language structure is COBOL.
LANG=PLI-ENTERPRISE
Specifies that the programming language of the high-level language structure is Enterprise PL/I.
LANG=PLI-OTHER
Specifies that the programming language of the high-level language structure is a level of PL/I other than Enterprise PL/I.
LANG=C
Specifies that the programming language of the high-level language structure is C.
LANG=CPP
Specifies that the programming language of the high-level language structure is C++.
LOGFILE=value
The fully qualified z/OS UNIX name of the file into which DFHSC2LS writes its activity log and trace information. DFHSC2LS creates the file, but not the directory structure, if it does not already exist.

Typically you do not use this file, but it might be requested by the IBM service organization if you encounter problems with DFHSC2LS.

MAPPING-LEVEL={1.0|1.1|1.2|2.0|2.1|2.2|3.0|4.0|4.1}
Specifies the level of mapping for the assistant to use when generating the XML binding and language structures. You are recommended to use the most recent mapping level that is available; for DFHSC2LS, you are recommended to use a mapping level of 3.0 or higher.
3.0
The xsd:dateTime data type maps to the CICS ASKTIME format.
4.0
Use this mapping level with a CICS TS 5.2 region when you want to use UTF-16.
4.1
For truncatable array support, use this mapping level with a CICS TS 5.2 region that has APAR PI67641 applied, or any CICS TS 5.3 or later region.
For more details of support at each mapping level, see Mapping levels for the CICS assistants.
MAPPING-OVERRIDES={SAME-AS-MAPPING-LEVEL|UNDERSCORES-AS-HYPHENS|NO-ARRAY-NAME-INDEXING}
Specifies whether the default mapping behavior is overridden for the specified mapping level. The default value is SAME-AS-MAPPING-LEVEL.
UNDERSCORES-AS-HYPHENS
For COBOL only. Converts any underscores in the XML document to hyphens instead of the character X. This option improves the readability of the generated COBOL language structures. If any field name clashes occur, the fields are numbered to ensure they are unique. For more information, see XML schema to COBOL mapping.
Start of changeNO-ARRAY-NAME-INDEXINGEnd of change
Start of changeFor Enterprise PL/I only. Ensures that the field names within an array are unique only within the scope of the higher level structure.End of change
MINIMUM-RUNTIME-LEVEL={MINIMUM|3.0|4.0||4.1CURRENT}
Specifies the minimum CICS runtime environment into which the XML binding can be deployed. If you select a level that does not match the other parameters that you have specified, you receive an error message. The options that you can select are as follows:
MINIMUM
The lowest possible runtime level of CICS is allocated automatically based on the parameters that you have specified.
3.0
Specify runtime level 3.0 or above if you want to use the CICS XML assistant and take advantage of advanced data mappings.
Start of change4.0End of change
Start of changeThe generated web service binding file deploys successfully into a CICS V5.2 region or later. With this runtime level, you can use a mapping level of 4.0 or earlier for the MAPPING-LEVEL parameter. You can use any optional parameter at this level.End of change
4.1
The generated web service binding file deploys successfully into a CICS V5.2 region that has APAR PI67641 applied, or into any CICS V5.3 or later region. With this runtime level, you can use a mapping level of 4.1 or earlier for the MAPPING-LEVEL parameter.
CURRENT
Use this runtime level to deploy the generated XML binding into a CICS region that has the same runtime environment as the region used to generate the XML binding.
OVERWRITE-OUTPUT=NO|YES
Controls whether existing CICS BUNDLEs on the file system can be overwritten.
NO
Any existing BUNDLE is not replaced. If an existing BUNDLE is found DFHLS2SC issues error message DFHPI9689E and terminates.
YES
Any existing BUNDLE is replaced. If an existing BUNDLE is found then message DFHPI9683W is issued to inform you that the file has been replaced.
PDSCP=value
Specifies the code page that is used in the partitioned data set members, where value is a CCSID number or a Java code page number. If you do not specify this parameter, the z/OS UNIX System Services code page is used. For example, you might specify PDSCP=037.
PDSLIB=value
Specifies the name of the partitioned data set that contains the generated high-level language.
PDSMEM=value
Specifies the 1-6 character prefix that DFHSC2LS uses to generate the name of the partitioned data set member that will contain the high-level language structures.
DFHSC2LS generates a partitioned data set member for each operation. It generates the member name by appending a 2-digit number to the prefix.
SCHEMA=value
The fully qualified z/OS UNIX name of the file from which the XML schema is read. DFHSC2LS creates the file, but not the directory structure, if it does not already exist.
You can use either an XML schema or a WSDL document as input to DFHSC2LS. You must specify either this parameter or the WSDL parameter, but not both, to indicate from where the input comes.
STRUCTURE={PDSMEM_value|data}
The name of the top-level data structure in C and C++. The default value is the value of the PDSMEM parameter.
TYPES=value
Defines a list of global type local names to enable. A value of ALL indicates that all global types are enabled. By default, global types are not enabled.
WIDE-COMP3=NO|YES
For COBOL only. Controls the maximum size of the packed decimal variable length in the COBOL language structure.
NO
DFHWS2LS limits the packed decimal variable length to 18 when generating the COBOL language structure type COMP-3. If the packed decimal size is greater than 18, message DFHPI9022W is issued to indicate that the specified type is being restricted to a total of 18 digits.
YES
DFHWS2LS supports the maximum size of 31 when generating the COBOL language structure type COMP-3.
WSDL=value
The fully qualified z/OS UNIX name of the WSDL document.
You can use either an XML schema or a WSDL document as input to DFHSC2LS. You must specify either this parameter or the SCHEMA parameter, but not both, to indicate from where the input comes.
XMLCP={LOCAL|UTF-8|EBCDIC-CP-US}
Specifies the code page that is used to generate the XML binding.
LOCAL
This value is the default. It specifies that the XML is generated using the local code page and no encoding tag is generated in the XML schema.
UTF-8
Specifies that the XML is generated using the UTF-8 code page. An encoding tag is generated in the XML schema. If you specify this option, you must ensure that the encoding remains correct when copying the XML schema between different platforms.
EBCDIC-CP-US
Specifies that the XML is generated using the US EBCDIC code page. An encoding tag is generated in the XML schema.
XSDBIND=value
The fully qualified z/OS UNIX name of the XML binding. DFHSC2LS creates the file, but not the directory structure, if it does not already exist. The file extension is .xsdbind.