Integrate Software AG Products Using Digital Event Services 10.4 | Integrate Software AG Products Using Digital Event Services | MashZone NextGen Help | Appendix | Legacy Presto components | Mashables and Mashups | Mashups in EMML | Writing Mashups in EMML | Controlling Mashup Processing Flow | <while> | <while> Example
 
<while> Example
You must specify the condition that must be true for the <while> loop to process. Then add statements, as needed, within <while>. For example:
<variables>
<variable name="orders" type="document"/>
<variable name="subtotal" type="number"/>
<variable name="taxes" type="document"/>
</variables>
...
<foreach variable="order" items="$orders//invoice">
<while condition="$order/item/tax > 0">
<appendresult outputvariable="$taxes">
<res:order>
<res:id>{$order/invoiceNo)}</res:id>
<res:item>{$order/item/itemNo}</res:item>
<res:tax>{$order/item/tax}</res:tax>
</res:order>
</while>
</appendresult>
</for>
You can also set the condition to always be true and then explicitly break out of the loop. For an example, see the <break> statement.
Working Samples
The WhileSample (while.emml) sample mashup use the <while> statement. See Mashup Samples for a list of MashZone NextGen mashup samples and where to find them.

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