Hi, This issue is a sticking-point on our project, since it's one of the main reasons we chose to go with XMLBeans (the fact that we could validate against a type in isolation -- not an entire schema file).
Without going into great detail, our project involves a graphical editor where each user-inputted value is governed by a type from a schema file (but where not enough data is available at validation time to validate on a document level). If no one is sure how to do this, can anyone recommend a few places to poke around in the XMLBeans code to get this working? If necessary we could update the library itself to support this, with some direction for a starting point. Thanks again, Vance > -------- Original Message -------- > Subject: RE: Validating a value against a SchemaType object > From: Vance Vagell <[EMAIL PROTECTED]> > Date: Thu, May 03, 2007 8:48 pm > To: [email protected] > > Hi Jacob, > > Thanks for the tip. I took a look at InstanceValidator, and noticed > that the key difference was that it uses the same SchemaTypeLoader > instance it used to load the SchemaTypes to also load the XML to be > validated. I tried that, no dice. However, I did a little more > debugging: > > * The error value I get back when validation fails is: cvc-elt.1 > * XmlErrorCodes describes this error as "ELEM_LOCALLY_VALID$NO_TYPE", > "cvc-elt.1: See clause 1 of XMLSchema Structures 1.0: Element Locally > Valid (Element)" > * I took a look at the suggested part of the schema spec, and that > clause reads "1 The declaration must not be absent." > * I took a look at all the XmlBeans code that includes the words > "invalid type", and found that the most likely source of this is this > part of QNameHelper: > > if (sType.isNoType() || sType.getOuterType() == null) > { > return "invalid type"; > } > > * Using a debugger, I was able to confirm that the SchemaType I'm > validating against DOES return null for getOuterType() (not sure what > this signifies -- the Javadocs for this method are very terse). > > So long story short, let me restate my goal, and hopefully someone has > another lifejacket they can throw me as I float around in this sea of > schemas and XML: > > - I have a value, as a string. Such as "car". > - I have a SchemaType object (a simple type), that was loaded from a > schema file, that says that valid values are "car" or "truck". > - I want to validate that "car" is a valid value, given the SchemaType > object. > - I create an XmlObject like this: > > XmlObject xmlObject = schemaTypeLoader.parse("<whatever>" + value + > "</whatever>", null, null); // Note that the SchemaType specified here > is null, I don't have or want a type that defines "whatever" > > - I select the "whatever" child, because I am not actually interested > in the tag, just the (simple) value. > > xmlObject = xmlObject.selectChildren(new QName("whatever"))[0]; > > - I change the type of the object to the type I'm interested in > validating against: > > xmlObject = xmlObject.changeType(schemaType); > > However, xmlObject.validate() always returns false, and if I use an > error listener I find out the information I described earlier in this > email. > > I've spent quite a few hours looking into this, and would sincerely > appreciate any advice others may have as to how I can perform this > validation. Note that the schemas involved have not been compiled > into Java objects, as this is a fully dynamic application, where the > schemas are loaded -- the user types in a value -- and then the > SchemaType objects are referenced to check its validity. > > Thanks so much! > > - Vance --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
