Are nested 'if' statements permitted in vxml?

Question

Are nested 'if' statements permitted? ex:

<if cond="1 == 1">
  <if cond="2 == 2">
      One is in fact equal to one and Two is in fact equal to two
  <else/>
      One is in fact equal to one but Two is never not equal to two
  </if>
<else/>
  One is never not equal to one
</if>

I realize I could rewrite this condition with an '&&' statement but the logic that I am trying to do would be messy to keep repeating in the chain of if elseifs that it would have to be.

score 3 · Accepted Answer · answered Aug 19 '09 at 18:51

3

Yes, according to the schema definition found here. An if is an executable.content element, which is allowed to contain a sequence of zero or more executable.content elements.

answered Aug 19 '09 at 18:51

John Feminella

303,634
46
339
357

The spec doesnt say much about it. Good you pointed to the schema definition. – Anupam Feb 15 '17 at 10:59

Anupam · Answer 2 · 2017-02-15T11:09:24.617

Adding to the @John's answer (since comments have a word limit):

This remains true for VXML 2.1 as well: https://www.w3.org/TR/voicexml21/vxml.xsd

<xsd:element name="if">
<xsd:sequence>
<xsd:group ref="executable.content" minOccurs="0" maxOccurs="unbounded"/>
<xsd:sequence minOccurs="0" maxOccurs="unbounded">
<xsd:element ref="elseif"/>
<xsd:group ref="executable.content" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:sequence minOccurs="0" maxOccurs="1">
<xsd:element ref="else"/>
<xsd:group ref="executable.content" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:sequence>
<xsd:attributeGroup ref="If.attribs"/>
</xsd:complexType>
</xsd:element>

Are nested 'if' statements permitted in vxml?

2 Answers2