Metacat Plugin:
----------------
build structure:
-SemtoolsPlugin is kept separate from Metacat, then built into the standard Metacat war
-Semtools skin should be handled like the plugin (move from metacat project to the semtools project)
-supporting libraries for semtools are added to the Metacat deployment for use at runtime

production features:
-dataset discovery
	-concept expansion
	-"same observation as"
	-compound query criteria
	-context-based criteria?
	-integrate semantic query with other search types: 
		-keyword
		-spatial
		-temporal?
-annotation management
	-use persistent data store (postgres) for AnnotationManager
		-initialization during Metacat restart will be quicker (the backing DB won't need to be recreated [in memory] each time)
	-test with larger corpus (term expansion - see how the backing DB handles this)
	-update SMS AnnotationManager entries when CRUD actions take place for documents matching the annotation schema
		-currently the AnnotationManager needs to be manually reinitialized when an annotation is inserted/updated/deleted
		-add extension point in Metacat for CRUD events so that registered listeners can be notified of the events and take appropriate actions 
			-much like the event handling in Kepler or Morpho - allows extension without modifying the core document handling classes
			-maybe DataONE can also make use of something like this?
-ontology management
	-determine ontology registration policy
		-OBOE, SBC, plant trait, jmx initially?
		-house ontologies in BioPortal (with versioning)?
	-allow anyone to register more ontologies with Metacat?
	-register any ontology that is referenced in Annotations that are saved to Metacat?
		-ontologies must be managed (and reasoned) in order to query across annotations that reference them.

Morpho Plugin:
--------------
Local/dev synchronization and saving
	-make sure that is less error prone
		-revisions, docid conflicts
		-access control permissions
		-handle multiple annotations per DP
	-eliminate the independent save option for annotations?
Query
	-use the SemtoolsPlugin for Metacat interface for querying data packages (instead of loading all remote annotations locally and then searching across those)
	-include the hybrid querying we build into Metacat so that semantic, keyword, and spatial criteria can be combined for a fine-grained query




Experimental:
-------------
Data query (Metacat)
	-specify data ranges for Characteristics
	-specify data values for context (temporal, spatial) - or is this metadata still?
Data integration (Metacat download)
	-"smart" integration
		-select attributes shared across data pacakges
		-include only rows matching the given data query
		-perform simple unit conversion (metric<->imperial, SI factors)
		-perform conversion for composite units (density vs. count/area)
Sensible summary (Morpho?)
	-aggregation by context
	-OLAP-style drilldown interface
alternative [rdf] annotation storage syntax (rdf)
	-rather than annotation.xsd, use triples to store the annotation - more aligned with semantic technology, but unclear if it helps us