Page Comparison

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<ac:structured-macro ac:name="table-plus" ac:schema-version="1" data-layout="default">
<ac:parameter ac:name="applyColStyleToCell">true</ac:parameter>
<ac:parameter ac:name="heading">0</ac:parameter>
<ac:parameter ac:name="columnTypes">s,s,s,s</ac:parameter>
<ac:parameter ac:name="multiple">false</ac:parameter>
<ac:parameter ac:name="columnAttributes">style="background:#e5e7ea;font-weight:bold,,style="background:#e5e7ea;font-weight:bold,</ac:parameter>
<ac:parameter ac:name="enableSorting">false</ac:parameter>
<ac:rich-text-body>
<table data-layout="default">
<colgroup>
<col style="width: 76.0px;" />
<col style="width: 278.0px;" />
<col style="width: 106.0px;" />
<col style="width: 266.0px;" />
</colgroup>
<tbody>
<tr>
<td>
<p><strong>Syntax</strong></p>
</td>
<td>
<p>isNull(variable)</p>
</td>
<td>
<p><strong>Package</strong></p>
</td>
<td>
<p></p>
</td>
</tr>
<tr>
<td>
<p><strong>Alias</strong></p>
</td>
<td>
<p></p>
</td>
<td>
<p><strong>Pkg Usage</strong></p>
</td>
<td>
<p></p>
</td>
</tr>
</tbody>
</table>
</ac:rich-text-body>
</ac:structured-macro>
<h2>Description</h2>
<p><ac:structured-macro ac:name="excerpt" ac:schema-version="1" data-layout="default">
<ac:parameter ac:name="hidden">true</ac:parameter>
<ac:rich-text-body>
Checks if the provided variable is null or has no value associated then returns "true", otherwise returns "false".
</ac:rich-text-body>
</ac:structured-macro>
<p>Checks if the provided variable is null or has no value associated then returns "true", otherwise returns "false".</p></p>
<h2>Parameters</h2>
<ac:structured-macro ac:name="table-plus" ac:schema-version="1">
<ac:parameter ac:name="applyColStyleToCell">true</ac:parameter>
<ac:parameter ac:name="columnTypes">s,s,s,s</ac:parameter>
<ac:parameter ac:name="heading">0</ac:parameter>
<ac:parameter ac:name="multiple">false</ac:parameter>
<ac:parameter ac:name="enableSorting">false</ac:parameter>
<ac:rich-text-body>
<table data-layout="default">
<colgroup>
<col style="width: 170.0px;" />
<col style="width: 97.0px;" />
<col style="width: 108.0px;" />
<col style="width: 305.0px;" />
</colgroup>
<tbody>
<tr>
<th>
<p>Parameter name</p>
</th>
<th>
<p>Type</p>
</th>
<th>
<p>Required</p>
</th>
<th>
<p>Description</p>
</th>
</tr>
<tr>
<td>
<p>variable</p>
</td>
<td>
<p>Any</p>
</td>
<td>
<p>Yes</p>
</td>
<td>
<p>Value you want to test. Value argument can be a string or a variable of any type.</p>
</td>
</tr>
</tbody></table></ac:rich-text-body></ac:structured-macro>
<h2>Return Type</h2>
<p><strong>Boolean (true/false)</strong></p>

<h2>Examples</h2>
<h3>Example 1</h3>
<p>Checks whether the assignee was selected for a ticket.</p>
<ac:structured-macro ac:name="code" ac:schema-version="1">
<ac:plain-text-body>
<![CDATA[if(isNull(assignee)) {
assignee = reporter;
}]]>
</ac:plain-text-body>
</ac:structured-macro>

<h3>Example 2</h3>
<p>The following line checks whether the <strong>Time Spent</strong> field contains any work logged on the ticket.</p>
<ac:structured-macro ac:name="code" ac:schema-version="1">
<ac:plain-text-body>
<![CDATA[if(isNull(assignee)) {
assignee = reporter;
}]]>
</ac:plain-text-body>
</ac:structured-macro>
<p>You can also use the <ac:link><ri:page ri:content-title="hasInput"/></ac:link> routine to check whether certain fields were filled out during a workflow transition. And among those fields you can also check the work logged in particular.</p>

<h2>Note</h2>
<p><ac:structured-macro ac:name="note" ac:schema-version="1">
<ac:rich-text-body>
<p>If <strong>isNull</strong> returns "true" the variable has no value attached. <strong>isNull</strong> returns "false" for <strong>zero</strong> for numeric variables or <strong>blank</strong> for character/string.</p>
</ac:rich-text-body>
</ac:structured-macro></p>

<h2>See also</h2>
<p><ac:structured-macro ac:name="contentbylabel" ac:schema-version="4">
<ac:parameter ac:name="showLabels">false</ac:parameter>
<ac:parameter ac:name="max">25</ac:parameter>
<ac:parameter ac:name="showSpace">false</ac:parameter>
<ac:parameter ac:name="cql">label = "basic_routines" and space = currentSpace ( )</ac:parameter>
<ac:parameter ac:name="labels">array_routines</ac:parameter>
</ac:structured-macro></p>

Syntax

isNull(variable)

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