When you specify the Type of APPSERVER, the PATH value is then an enumeration of disk locations where the resource is potentially located. The server will then build specific URL for each resources and then catch these URL to search through the given paths for the resource on disk and deliver it.
<WEB_APPLICATION_PICTURE_COMPONENT Id="resID"> <PATH Id="pathID" Type="APPSERVER" [ ExtensionFilter="ext" ] [ DVMFallbackAllowed="TRUE|FALSE" ]>pathlist</PATH> </WEB_APPLICATION_PICTURE_COMPONENT>
resID is the unique identifier for this picture component definition.
pathID defines what is located in the specified path, such as "Image" or "Resource". The Id attribute for the PICTURE element is optional; if not specified, it defaults to "Image".
ExtensionFilter is an optional attribute that filters access to application resources like images. Its value is a list of extensions, separated by semi-colons. For example: .png;.gif;.jpeg;.jpg;.bmp;.ico;.js;.css. The extensions are case sensitive. You might want to allow .png and not .PNG. If ExtensionFilter is not defined, access to any resources of the application is granted. ExtensionFilter is also used to filter image extensions that are asked to the DVM.By default, any applications which inherits defaultgwc configuration have restricted access to resources (see defaultgwc image component references in as.xcf)
DVMFallbackAllowed is an optional attribute that allows images and resources to be asked to the DVM if they are not found at the locations pointed by pathlist. By default, asking images to the DVM is allowed.
pathlist is a list of directory paths separated by semi-colons.
<!-- A GAS multilocation Picture Component --> <WEB_APPLICATION_PICTURE_COMPONENT Id="cpn.gwc.html5.picture"> <PATH Id="Resource" Type="WEBSERVER">$(connector.uri)/fjs</PATH> <PATH Id="Image" Type="APPSERVER" ExtensionFilter="$(res.image.extensions)"> $(res.path.tpl.html5)/img;$(res.path.pic);$(application.path)</PATH> <PATH Id="SetHtml5" Type="APPSERVER" ExtensionFilter="$(res.web.extensions);.less;.svg" DVMFallbackAllowed="FALSE"> $(res.path.tpl.html5);$(res.path.tpl.common)</PATH> <PATH Id="WebComponents" Type="APPSERVER" ExtensionFilter="$(res.web.components.extensions)" DVMFallbackAllowed="FALSE"> $(res.path.docroot)</PATH> </WEB_APPLICATION_PICTURE_COMPONENT>