Merge pull request #500 from microsoftgraph/is/delta-change-type-param

Adds `changeType` custom query option to delta function for `messages`

Author: baywet

transforms/csdl/preprocess_csdl.xsl

@@ -668,6 +668,26 @@
             </Annotation>
         </xsl:copy>
     </xsl:template>
+    
+    <!--Delta function for messages needs the changeType parameter-->
+    <xsl:template match="edm:Schema[@Namespace='microsoft.graph']/edm:Function[@Name='delta'][edm:Parameter[@Name='bindingparameter']][edm:Parameter[@Type='Collection(graph.message)']]">
+        <xsl:copy>
+            <xsl:apply-templates select="@* | node()"/>
+            <Annotation Term="Org.OData.Capabilities.V1.OperationRestrictions">
+            <Record>
+                <PropertyValue Property="CustomQueryOptions">
+                    <Collection>
+                        <Record>
+                            <PropertyValue Property="Name" String="changeType" />
+                            <PropertyValue Property="Description" String="A custom query option to filter the delta response based on the type of change. Supported values are created, updated or deleted." />
+                            <PropertyValue Property="Required" Bool="true" />
+                        </Record>                        
+                    </Collection>
+                </PropertyValue>
+            </Record>
+            </Annotation>
+        </xsl:copy>
+    </xsl:template>
 
     <!-- Add custom query options to calendarView navigation property -->
     <xsl:template name="CalendarViewRestrictedPopertyTemplate">

transforms/csdl/preprocess_csdl_test_input.xml

@@ -381,6 +381,10 @@
               <EntitySet Name="directoryObjects" EntityType="microsoft.graph.directoryObject" />
               <EntitySet Name="places" EntityType="microsoft.graph.place" />
             </EntityContainer>
+            <Function Name="delta" IsBound="true">
+                <Parameter Name="bindingparameter" Type="Collection(graph.message)" Nullable="false" />
+                <ReturnType Type="Collection(graph.message)" Nullable="false" />
+            </Function>
             <Function Name="delta" IsBound="true">
                 <Parameter Name="bindingparameter" Type="Collection(graph.event)" Nullable="false" />
                 <ReturnType Type="Collection(graph.event)" Nullable="false" />

transforms/csdl/preprocess_csdl_test_output.xml

@@ -1045,6 +1045,23 @@
           </Annotation>
         </EntitySet>
       </EntityContainer>
+      <Function Name="delta" IsBound="true">
+        <Parameter Name="bindingparameter" Type="Collection(graph.message)" Nullable="false" />
+        <ReturnType Type="Collection(graph.message)" Nullable="false" />
+        <Annotation Term="Org.OData.Capabilities.V1.OperationRestrictions" xmlns:edm="http://docs.oasis-open.org/odata/ns/edm">
+          <Record>
+            <PropertyValue Property="CustomQueryOptions">
+              <Collection>
+                <Record>
+                  <PropertyValue Property="Name" String="changeType" />
+                  <PropertyValue Property="Description" String="A custom query option to filter the delta response based on the type of change. Supported values are created, updated or deleted." />
+                  <PropertyValue Property="Required" Bool="true" />
+                </Record>
+              </Collection>
+            </PropertyValue>
+          </Record>
+        </Annotation>
+      </Function>
       <Function Name="delta" IsBound="true">
         <Parameter Name="bindingparameter" Type="Collection(graph.event)" Nullable="false" />
         <ReturnType Type="Collection(graph.event)" Nullable="false" />