Merge pull request #1158 from SanojPunchihewa/variable

Add variable mediator docs

en/docs/reference/mediators/about-mediators.md

@@ -48,12 +48,18 @@ WSO2 Micro Integrator includes a comprehensive catalog of mediators that provide
     <th>Content aware/unaware</th>
   </tr>
   <tr>
-    <td rowspan="11">Generic mediators</td>
+    <td rowspan="12">Generic mediators</td>
     <td>
       <a href="{{base_path}}/reference/mediators/call-mediator">Call mediator</a>
     </td>
     <td>Conditionally content-aware</td>
   </tr>
+  <tr>
+    <td>
+      <a href="{{base_path}}/reference/mediators/variable-mediator">Variable mediator</a>
+    </td>
+    <td>Conditionally content-aware</td>
+  </tr>
   <tr>
     <td>
       <a href="{{base_path}}/reference/mediators/property-mediator">Property mediator</a>

en/docs/reference/mediators/variable-mediator.md

@@ -0,0 +1,88 @@
+# Variable mediator
+
+The Variable mediator is used to manage variables within a mediation flow. The Variable mediator allows you to set or remove variables, which can then be used later in the mediation flow.
+
+## Syntax
+
+```xml
+<variable name="string" [action="set"|"remove"] [type="STRING"|"INTEGER"|"BOOLEAN"|"DOUBLE"|"FLOAT"|"LONG"|"SHORT"|"OM"|"JSON"] 
+        (value="string" | expression="expression") />
+```
+
+## Configuration
+
+The parameters available to configure the Variable mediator are as follows:
+
+<table>
+<thead>
+<tr class="header">
+<th>Parameter Name</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr class="odd">
+<td><strong>Action</strong></td>
+<td><p>The action to perform on the variable.</p>
+<ul>
+<li><strong>set</strong>: If this is selected, the variable will be set in the message.</li>
+<li><strong>remove</strong>: If this is selected, the variable will be removed from the message.</li>
+</ul></td>
+</tr>
+<tr class="even">
+<td><strong>Name</strong></td>
+<td><div class="content-wrapper">
+<p>The name of the variable. This name uniquely identifies the variable in the mediation flow.</p>
+</div></td>
+</tr>
+<tr class="odd">
+<td><strong>Data Type</strong></td>
+<td><div class="content-wrapper">
+<p>The data type of the variable. Available types are as follows:</p>
+<ul>
+<li><strong>STRING</strong></li>
+<li><strong>INTEGER</strong></li>
+<li><strong>BOOLEAN</strong></li>
+<li><strong>DOUBLE</strong></li>
+<li><strong>FLOAT</strong></li>
+<li><strong>LONG</strong></li>
+<li><strong>SHORT</strong></li>
+<li><p><strong>OM</strong></p></li>
+<li><p><strong>JSON</strong></p></li>
+</ul>
+</td>
+</tr>
+<tr class="even">
+<td><strong>Value</strong></td>
+<td>You can give either a static value or a <a href="{{base_path}}/reference/synapse-properties/synapse-expressions">Synapse expression</a>.
+</td>
+</tr>
+</tbody>
+</table>
+
+## Examples
+
+### Set a variable with a static value
+
+This example demonstrates setting a variable with a static value.
+
+```xml
+<variable name="username" action="set" value="JohnDoe" type="STRING"/>
+```
+
+### Set a variable with an expression
+
+This example demonstrates dynamically setting a variable using an expression.
+
+```xml
+<variable name="userDataObject" action="set" expression="${payload.user.data}" type="JSON"/>
+<variable name="userId" action="set" expression="${payload.user.id}" type="INTEGER"/>
+```
+
+### Remove a variable
+
+This example demonstrates removing a variable from the message.
+
+```xml
+<variable name="sessionToken" action="remove"/>
+```

en/mkdocs.yml

@@ -862,6 +862,7 @@ nav:
               - Transaction Mediator: reference/mediators/transaction-mediator.md
               - URLRewrite Mediator: reference/mediators/urlrewrite-mediator.md
               - Validate Mediator: reference/mediators/validate-mediator.md
+              - Variable Mediator: reference/mediators/variable-mediator.md
               - XQuery Mediator: reference/mediators/xquery-mediator.md
               - XSLT Mediator: reference/mediators/xslt-mediator.md
           - Property Catalog: