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Question in linking 2 instance using xpath

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quinquin2209

Question in linking 2 instance using xpath

Hi,

I have 2 XML instances, one is books information, and another is about the modification on some of the book:

<books>
<book>
<name>ABC</name>
<price>15</price>
</book>
<book>
<name>DEF</name>
<price modifyId="1">18</price>
</book>
<book>
<name>ABC</name>
<price modifyId="2">20</price>
</book>
</books>

<modifications>
<modification>
<id>1</id>
<oldValue>88</oldValue>
</modification>
<modification>
<id>2</id>
<oldValue>120</oldValue>
</modification>
</modifications>

In the xform, I wanna display the book information, plus the modification, if any. The way to link between these 2 instances is to use the modifyId mapping to the /modifications/modification/id.

I have written the form as follow:

<xforms:repeat context="instance('books-instance')" nodeset="//book" id="book-repeat">
<xforms:input ref="name"></xforms:input>
<xforms:input ref="price"></xforms:input>
</xforms:repeat>

However, i have no idea on how can I linkup the book info with the modifications using the xpath.

Any suggestion on how I can achieve it?

Thanks in advance

Queenie

Alexander Žaťko

Re: Question in linking 2 instance using xpath

I think you can use the xxforms:repeat-current function.

<xforms:repeat context="instance('books-instance')" nodeset="//book"
id="book-repeat">
<xforms:input ref="name"/>
<xforms:input ref="price"/>
<xforms:repeat nodeset="instance('modifications')/modification[id
= xxforms:repeat-current('book-repeat')/price[@modifyId]/@modifyId"
id="book-mods">
<xforms:output ref="price"/>
</xforms:repeat>
</xforms:repeat>

See http://www.orbeon.com/ops/doc/reference-xforms-2 for more info.

A.

On Feb 11, 2008, at 3:17 AM, quinquin2209 wrote:

>
> Hi,
>
> I have 2 XML instances, one is books information, and another is
> about the
> modification on some of the book:
>
> <books>
> <book>
> <name>ABC</name>
> <price>15</price>
> </book>
> <book>
> <name>DEF</name>
> <price modifyId="1">18</price>
> </book>
> <book>
> <name>ABC</name>
> <price modifyId="2">20</price>
> </book>
> </books>
>
> <modifications>
> <modification>
> <id>1</id>
> <oldValue>88</oldValue>
> </modification>
> <modification>
> <id>2</id>
> <oldValue>120</oldValue>
> </modification>
> </modifications>
>
> In the xform, I wanna display the book information, plus the
> modification,
> if any. The way to link between these 2 instances is to use the
> modifyId
> mapping to the /modifications/modification/id.
>
> I have written the form as follow:
>
> <xforms:repeat context="instance('books-instance')" nodeset="//book"
> id="book-repeat">
> <xforms:input ref="name"></xforms:input>
> <xforms:input ref="price"></xforms:input>
> </xforms:repeat>
>
> However, i have no idea on how can I linkup the book info with the
> modifications using the xpath.
>
> Any suggestion on how I can achieve it?
>
> Thanks in advance
>
> Queenie
> --
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