Awesome work Stefan! I have a project I'll be starting soon that's in need of something like this. Thank you much.
-James On Tue, 2005-01-11 at 18:23 +0100, Stefan LÃtzkendorf wrote: > Hello folks, > > as you may have noticed, I made some restructuring in the webdav layer > for support of configurable properties. A first major step is done and > that's why I want to give a short overview. I'll add a wiki page to this > stuff later. > > hope this will be usefull for others too, > Stefan > > ---------------------- > > Similiar to the previous solution: capabilities of resources are managed > around "resource kinds". Capabilities currently are > - live-properties > - webdav methods allowed > - reports allowed > > New is that these capabilities are no longer 'hard coded' but > can be configured! > > The default configuration of slides supported properties can be found > in the org.apache.slide.webdav.util.resourcekind package in the > resource_kinds.xml file. > AND user defined resource kind capabilities (e.g. new computed > properties) can additionally added in the Domain.xml. > > 1st sample (computed properties): someone wants to add a new property > that each resource can have, that can be set explicitly and if a > resource has no explicite value set, the value shall be inherited by the > nearest ancester resource. This is a task for a computed property. You > have to create a new PropertyComputer. For this sample slide contains > always an implementation (InheritedProperty). > > The following configuration registers the computed property: > > <resource-kind name="DeltavCompliant"> > <live-properties> > <live-property name="myProperty" > namespace="http://my.company.com/slide"; > computer="org.apache.slide.webdav.util.properties.InheritedProperty"> > <computer-configuration> > <default-value>undefined</default-value> > </computer-configuration> > </live-property> > </live-properties> > </resource-kind> > > 2nd sample (validated properties): someone wants to add a new property > that only supports a given set of values or the value must have a > special syntax (e.g. must be date string matching some formats). > To resolve this you have to implement a PropertyValueValidator. > As a sample slide contains a DateValueValidator. > > The following configuration registers a validated property: > > <resource-kind name="DeltavCompliantCollection"> > <live-properties> > <live-property name="myDate" > namespace="http://my.company.com/slide"; > validator="org.apache.slide.webdav.util.properties.DateValueValidator"> > </live-property> > </live-properties> > </resource-kind> > > Note that I use the resource kind DeltavCompliantCollection, i.e., this > property definition is limited to collection resources) > > 3rd (default values): It may be usefull to set a default value for > certain properties. This is possible, but is currently not used > consitently through slide. In particular the PutMethod and the > MkcolMethod are not using this currently (maybe some other methods will > need this too). Actually it is used only by some of the versioning > implementations. > > > The configuration framents shown above may be posted to the > resource_kinds.xml of the resourcekind package if the properties shall > be default in slide. > > Or you can add them in the Domain.xml. Add the following to the <events> > section: > > <event classname="org.apache.slide.event.DomainEvent" enable="true"/> > <listener > classname="org.apache.slide.webdav.util.resourcekind.ResourceKindConfigurator"> > <configuration> > ... your resource kind capability definitions here ... > </configuration> > </listener> > > I have added a DomainEvent that is triggered if the domain is > initialized successfully. I'm not sure that this is the best to trigger > webdav specific configuration way but for now it works. > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
