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An asset is metadata plus content (content is the file) and namespaces are a virtual hierarchy of for assets.

Asset metadata

Standard metadata

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Here is how to set the metadata value within of location to a value of "Perth" using pshell:

asset.set :id 25480 :meta < :mytype < :location "Perth" > >

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where myfile.jpg.meta contained the following:

[asset]
geoshape/point]
/latitude = "10.0"
geoshape/point/longitude = "20.0"
geoshape/point/elevation = "100.0"

[mytype]
name = "the name"
details = "some more information"

We can then import the file using pshell, eg:

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To restrict the search to look only in /projects/Data Teammyproject, use:

asset.query :where "namespace='/projects/Data Teammyproject' and name='*.PNG'"

To If you wish to search in /projects/Data Team myproject and all folders underneath it, use:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'"

Searching for all assets that were created after a certain date would be done as follows:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "ctime>='01-Jan-2017'"

Similar searches could be done using a geometric bounding box if your data has geospatial information attached.

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If one of the elements in mytype was location (which is of type string), then here is how to search for a particular value:

asset.query :namespace "/projects/myproject" :where "xpath(mytype/location) = 'Perth' and namespace>='/projects/myproject'"

Getting more information from the results

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To get the name of the asset as well, use:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action get-name

To get arbitrary pieces of metadata, for example the name and checksum, use:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action get-value :xpath name :xpath content/csum

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To associate a better name with the returned metadata item, use something like:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action get-value :xpath -ename checksum content/csum

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For example, to count all PNG files stored in the entire Data Team project or and then to sum their sizes you would run, respectively:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action count
asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action sum :xpath content/size

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For example, suppose we wanted to move all PNG files to a new location /projects/Data Teammyproject/png-files we would use:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action pipe :service -name asset.move < :namespace /projects/Data Teammyproject/png-files >

Here our action is to pipe the results to another service call, in this case an asset.move, which is a service call that takes the required destination namespace argument in a shorthand XML document.

Naturally, similar constructions could be used to simply delete these files instead:

asset.query :wherenamespace "namespace>='/projects/Data Team' and myproject" :where "name='*.PNG'" :action pipe :service -name asset.destroy

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To change the name of the sean folder1 namespace to sean2 folder2 use:

asset.namespace.rename :namespace /projects/Data Teammyproject/seanfolder1 :name sean2folder2

To move the namespace sean to folder1 to a new parent location use:

asset.namespace.move :namespace /projects/Data Teammyproject/seanfolder1 :to /projects/Data Teammyproject/adminsnewparent

To delete a namespace entirely, use:

asset.namespace.destroy :namespace /projects/Data Teammyproject/seanfolder1