In section 12.3.5 of the specification, the 'lengthPattern' property is listed as having the type 'DFDL Regular expression'. Unlike some other properties, dfdl:lengthPattern cannot be a DFDL expression. Therefore it cannot contain a DFDL variable reference.
Is there no workaround for this? From: dfdl-wg-bounces@ogf.org [mailto:dfdl-wg-bounces@ogf.org] On Behalf Of Tim Kimber Sent: Monday, June 24, 2013 4:11 PM To: dfdl-wg@ogf.org Subject: Re: [DFDL-WG] Can I concatenate a variable? Hi James, In section 12.3.5 of the specification, the 'lengthPattern' property is listed as having the type 'DFDL Regular expression'. Unlike some other properties, dfdl:lengthPattern cannot be a DFDL expression. Therefore it cannot contain a DFDL variable reference. On the other hand, section 14.2 lists the data type of dfdl:separator as 'List of DFDL String Literals or DFDL Expression', However, your dfdl:separator is not a valid DFDL expression. The property must be either a valid DFDL expression or a list of DFDL string literals. The syntax you need is <xsd:sequence dfdl:separator="{fn:concat('--'),$some_boundary}" dfdl:separatorSuppressionPolicy="anyEmpty" dfdl:terminator="--%CR;%LF;"> regards, Tim Kimber, DFDL Team, Hursley, UK Internet: kimbert@uk.ibm.com<mailto:kimbert@uk.ibm.com> Tel. 01962-816742 Internal tel. 37246742 From: "Garriss Jr., James P." <jgarriss@mitre.org<mailto:jgarriss@mitre.org>> To: "dfdl-wg@ogf.org<mailto:dfdl-wg@ogf.org>" <dfdl-wg@ogf.org<mailto:dfdl-wg@ogf.org>>, Date: 24/06/2013 20:38 Subject: [DFDL-WG] Can I concatenate a variable? Sent by: dfdl-wg-bounces@ogf.org<mailto:dfdl-wg-bounces@ogf.org> ________________________________ Suppose I define a variable like this: <dfdl:defineVariable name="boundary" defaultValue="some_boundary" type="xsd:string"/> Can I later concatenate it with other values? For example, can I concatenate it as part of a pattern? <xsd:element name="Preamble" type="xsd:string" dfdl:lengthKind="pattern" dfdl:lengthPattern="(.+?)(?=--{$some_boundary})"/> Can I concatenate it as part of a separator? <xsd:sequence dfdl:separator="--{$some_boundary}" dfdl:separatorSuppressionPolicy="anyEmpty" dfdl:terminator="--%CR;%LF;"> TIA!-- dfdl-wg mailing list dfdl-wg@ogf.org<mailto:dfdl-wg@ogf.org> https://www.ogf.org/mailman/listinfo/dfdl-wg Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU