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Epsilon Plain Xml Transformation [message #1383944]

Tue, 27 May 2014 06:43

Eclipse User

I have the following xml file:

<xyz-abc name="op">
<a>ddm</a>
<b>jdkd</b>
<xyz-abc name="ot">
<xyz-abc>
<a>kjdk</a>
<b>nkdnc</b>
</xyz-abc>.

So here, the element xyz-abc has a 'hyphen' in the tagname.
Now, to read xyz-abc element in the eol file :
var element=`t_xyz-abc`.all

(PS: I am using back ticks as I was getting an exception when not using them. Without back ticks, only the part after the hyphen ie., abc was being taken as the tagname.)

Althought back ticks are doing the trick to retrieve the element (not sure), but I am facing problem when I am trying to retrieve the attributes etc., of that element.
For instance, element.println() prints:
] org.eclipse.epsilon.eol.types.EolModelElementType@4094da61

But,

element.a_name.println() raises the following exception :
Property 'a_name' not found in object org.eclipse.epsilon.eol.types.EolModelElementType@4094da61

I need some suggestion on how to deal with elements which have hyphen in their tag names.

Re: Epsilon Plain Xml Transformation [message #1383975 is a reply to message #1383944]

Tue, 27 May 2014 11:40

Eclipse User

Hi,

You can get hold of all xyz-abc elements using `t_xyz-abc`.all. To get the values of their name attribute, you need to iterate through them i.e.

for (xyz in `t_xyz-abc`.all) {
xyz.a_name.println();
}

Cheers,
Dimitris

Re: Epsilon Plain Xml Transformation [message #1384077 is a reply to message #1383975]

Wed, 28 May 2014 00:54

Eclipse User

Thankyou Dimitris. That works.

There are two other problems which I am facing:
1)Is there a way to append a new child at a particular position .ie.,
consider this file:
<school>
<student>a</student>
<student>b</student>
<teacher>x</teacher>
<teacher>y</teacher>
..
..
</school>
Now when I add a new student:
var s=t_school;
s.createStudent();
operation Element createStudent()
{
var s=new t_student;
self.appendChild(s);
}

After this the file looks like:
<school>
<student>a</student>
<student>b</student>
//Can new student be added here??
<teacher>x</teacher>
<teacher>y</teacher>
..
..
<student/>
</school>

I want the new 'student' be added in place with the previous 'students' , as there is some validation process which requires such placement.

2)Once the file has been edited by the eol, the file is left with some unwanted escaped characters:
For eg.,
<student id ="123" status='query.isdaysScholar("123")'/>
After running the eol, this appears:
<student id ="123" status="query.isdayscholar("123")"/>
So, the single quotes surround a method call are being replaced by double quotes and also, the double quotes around the method parameter are being escaped to """.
Is there a way to force stop this escaping ?

[Updated on: Wed, 28 May 2014 05:03] by Moderator

Re: Epsilon Plain Xml Transformation [message #1384131 is a reply to message #1384077]

Wed, 28 May 2014 03:54

Eclipse User

Hi Gurdeep,

1) I'd suggest using http://docs.oracle.com/javase/6/docs/api/org/w3c/dom/Node.html#insertBefore(org.w3c.dom.Node, org.w3c.dom.Node)

2) I'm afraid that this is not possible at the moment. If you need such a feature, please feel free to file an enhancement request using the link below

https://bugs.eclipse.org/bugs/enter_bug.cgi?product=epsilon

Cheers,
Dimitris

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