The site base URL property editor uses the DefaultEditor.as class that implements the URLPropertyValidtor for validation. This property is configured in the viewmapping.xml file by creating a new propertyViewMapping and propertyView:

<add-item item-descriptor="propertyViewMapping" id="SaPvmSiteURL">
  <set-property name="propertyView"><![CDATA[SaPvSiteURL]]>
    </set-property>
  <set-property name="description"><![CDATA[Site URL
    PropertyViewMapping]]></set-property>
  <set-property name="attributeValues"><![CDATA[]]></set-property>
</add-item>

<add-item item-descriptor="propertyView" id="SaPvSiteURL">
  <set-property name="name"><![CDATA[AssetManager Site URL
    propertyView]]></set-property>
  <set-property name="description"><![CDATA[AssetManager Site URL
    propertyView]]></set-property>
  <set-property name="mode"><![CDATA[AmMmDef]]></set-property>
  <set-property name="type"><![CDATA[string]]></set-property>
  <set-property name="viewComponent"><![CDATA[atg.assetmanager
    editor.view.property.DefaultEditor]]></set-property>
  <set-property name="isComponentPropertyView"><![CDATA[false]]>
    </set-property>
  <set-property name="isDefault"><![CDATA[false]]></set-property>
  <set-property name="attributes"><![CDATA
    [customAssetPropertyService=SaPvAssetPropertyService,
    propertyValidators=SaAvURLPropertyValidator,inputFieldMaxlength
    =AmPvadIntInputFieldMaxLength,inputFieldMaxWidth=AmPvadIntInput
    FieldMaxWidth]]></set-property>
</add-item>

To use the new propertyMapping, add the following propertyMapping to the item’s itemViewMapping:

<set-property name="propertyMappings">
    <![CDATA[productionURL=SaPvmSiteURL]]></set-property>

The URL validation process uses the SiteAdminAssetPropertyService, which is configured in the viewmapping.xml file with the following attribute:

<add-item item-descriptor="propertyViewAttributeDefinition"
  id="SaPvAssetPropertyService">
<set-property name="defaultValue"><![CDATA[/atg/remote/multisite
  /service/SiteAdminAssetPropertyService]]>
</set-property>
</add-item>

The propertyVIewAttributeDefinition is added to the propertyView attributes tag:

<set-property name="attributes">
<![CDATA[customAssetPropertyService=SaPvAssetPropertyService]]>
</set-property>

The validateAssetVIew method acquires the SiteAdminAssetPropertyService class.

Overriding Default Validation Rules

To override the default server-side validation rules, you must override the RespositoryViewServiceImpl.validateAssetView method in the AssetPropertyService class. This class is defined in the viewmapping file. The AssetPropertyService class runs an extended SiteAdminPropertyEditorAssetViewService that overrides the default validation method.