[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Will "AT&T" fit in a string attribute with maxLength="4"?
> -----Original Message----- > From: Zielinski, Marek [mailto:mzielinski@g...] > Sent: Tuesday, May 20, 2003 13:47 > To: 'Xml-Dev (E-mail) > Subject: Will "AT&T" fit in a string attribute with > maxLength="4"? > > > I am trying to define restrictions on string lengths using > Schema. The data actually comes from databases, and is > exchanged between two different systems. I encountered a > snag: when the string contains one of the reserved > characters, like "&", the parser automatically translates it > into an entity, e.g. &. This increases the length of the > string, and now the string does not fit; the validator (I am > using XMLSpy) rejects it as too long. How can & count as 5 characters, given that it is present in the infoset as a single ISO/IEC 10646 character? Would & count as 5 characters too?? I hope not. What does XML Spy check facets against, the XML 1.0 serialization, or the infoset? What is the behavior of other tools? Alessandro Triglia > > I could add a couple of characters to the maxLength > restriction, but this defeats the purpose of length limit. > Besides, to be safe I would need to make the limit about 4 > times larger than the intended limitation on the actual > string length. (i.e. if want to limit string to 4 chars, and > the string happens to be "&&&&") > > Any solution? Any way to make the parser decode the entity > before checking the string length? > > -Marek Zielinski > GMA > > Example below: the XML does not validate, although the string > is originally 'AT&T'. > > Sample XML: > <PhoneCompany Name="AT&T"/> > > Sample Schema: > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" > elementFormDefault="qualified" attributeFormDefault="unqualified"> > <xs:element name="PhoneCompany"> > <xs:complexType> > <xs:attribute name="Name" use="optional"> > <xs:simpleType> > <xs:restriction > base="xs:string"> > <xs:maxLength > value="4"/> > </xs:restriction> > </xs:simpleType> > </xs:attribute> > </xs:complexType> > </xs:element> > </xs:schema> > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org > <http://www.xml.org>, an initiative of OASIS <http://www.oasis-open.org> The list archives are at http://lists.xml.org/archives/xml-dev/ To subscribe or unsubscribe from this list use the subscription manager: <http://lists.xml.org/ob/adm.pl>
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