Re: Don's question

[Lofton Henderson <lofton@rockynet.com>]

[..redirecting to TC list...]

Forrest,

Of course, you're right....I just compounded the error by copying and
pasting from Don's email.  dashLength is inside the content of
lineEdgeTypeDef

thx..Dave

On Mon, Jan 26, 2009 at 7:07 AM, Forrest Carpenter
<forrest@sdicgm.com>
wrote:

Dave,

 

In the DTD the dashLength element is defined as:

            <!ELEMENT lineEdgeTypeDef ( dashLength+ )

            <!ATTLIST lineEdgeTypeDef

                        lineIndex ( 1 | 2 | 3 | 4 | 5 ) #REQUIRED

 repeatLength CDATA #REQUIRED  

 So shouldn't the dashLength be within the lineEdgeTypeDef ?                     

 

<webcgmConfig
   <lineEdgeTypeDef lineIndex="1" repeatLength="100"
   </lineEdgeTypeDef>

      <dashLength>10</dashLength>
      <dashLength>2</dashLength>
      <dashLength>5</dashLength>
      <dashLength>2</dashLength>

   </lineEdgeTypeDef>

</webcgmConfig>
       

Regards,

Forrest

 

 

---

From: David Cruikshank [mailto:dvdcruikshank@gmail.com]
Sent: Sunday, January 25, 2009 5:27 PM
To: Andrew Moorhouse; Ben Bezaire; Dieter Weidenbruck; Don Larson; Forrest Carpenter; Franck Duluc; Lofton Henderson; Rob Orosx; Stuart Galt
Subject: Don's question

 

I can't respond to the TC email list, so I'm sending my response this way.

Don asked about the content model for the aci:

I'm directing this question
to you since you created the ACI DTD

and perhaps could shed some light on this and at the same time

confirm my XML coding.



dashLength is defined as an Element rather than as an Attribute of 

lineEdgeTypeDef, thus an example the the XML encoding I believe

would be-



<webcgmConfig 

    <lineEdgeTypeDef lineIndex="1"
repeatLength="100" 

   
</lineEdgeTypeDef> 

    <dashLength>"10 2 5
2"</dashLength>

</webcgmConfig>





However it seems more natural for dashLength to be an Attribute and 

coded like this:

<webcgmConfig 

    <lineEdgeTypeDef lineIndex="1"
repeatLength="100" 

     dashLength="10 2 5 2"

    </lineEdgeTypeDef> 

</webcgmConfig>



This also applies to the directionVectors and gapWidth Elements

assocaited with the
hatchStyleDef.

My response:

When things are repeatable, I've tended to make them repeating elements as opposed to attributes.  I think the correct encoding for your example is:



<webcgmConfig
   <lineEdgeTypeDef lineIndex="1" repeatLength="100"
   </lineEdgeTypeDef>

   <dashLength>10</dashLength>
   <dashLength>2</dashLength>
   <dashLength>5</dashLength>
   <dashLength>2</dashLength>
</webcgmConfig>

Remember dashLength is specified as "dashLength+".  That way no parsing is required to figure out the values.

If people want parse, it's ok but this was an attempt to simplify the work.


Dave