Collection get methods for all collection entities (#175)

Signed-off-by: Alastair Porter <[email protected]>

musicbrainzngs/mbxml.py

@@ -182,8 +182,12 @@ def parse_collection(collection):
     result = {}
     attribs = ["id", "type", "entity-type"]
     elements = ["name", "editor"]
-    # TODO: add event-list:
-    inner_els = {"release-list": parse_release_list}
+    inner_els = {"release-list": parse_release_list,
+                 "artist-list": parse_artist_list,
+                 "event-list": parse_event_list,
+                 "place-list": parse_place_list,
+                 "recording-list": parse_recording_list,
+                 "work-list": parse_work_list}
     result.update(parse_attributes(attribs, collection))
     result.update(parse_elements(elements, inner_els, collection))
 

musicbrainzngs/musicbrainz.py

@@ -1182,16 +1182,59 @@ def get_collections():
     # Missing <release-list count="n"> the count in the reply
     return _do_mb_query("collection", '')
 
+def _do_collection_query(collection, collection_type, limit, offset):
+    params = {}
+    if limit: params["limit"] = limit
+    if offset: params["offset"] = offset
+    return _do_mb_query("collection", "%s/%s" % (collection, collection_type), [], params)
+
+def get_artists_in_collection(collection, limit=None, offset=None):
+    """List the artists in a collection.
+    Returns a dict with a 'collection' key, which again has a 'artist-list'.
+
+    See `Browsing`_ for how to use `limit` and `offset`.
+    """
+    return _do_collection_query(collection, "artists", limit, offset)
+
 def get_releases_in_collection(collection, limit=None, offset=None):
     """List the releases in a collection.
     Returns a dict with a 'collection' key, which again has a 'release-list'.
 
     See `Browsing`_ for how to use `limit` and `offset`.
     """
-    params = {}
-    if limit: params["limit"] = limit
-    if offset: params["offset"] = offset
-    return _do_mb_query("collection", "%s/releases" % collection, [], params)
+    return _do_collection_query(collection, "releases", limit, offset)
+
+def get_events_in_collection(collection, limit=None, offset=None):
+    """List the events in a collection.
+    Returns a dict with a 'collection' key, which again has a 'event-list'.
+
+    See `Browsing`_ for how to use `limit` and `offset`.
+    """
+    return _do_collection_query(collection, "events", limit, offset)
+
+def get_places_in_collection(collection, limit=None, offset=None):
+    """List the places in a collection.
+    Returns a dict with a 'collection' key, which again has a 'place-list'.
+
+    See `Browsing`_ for how to use `limit` and `offset`.
+    """
+    return _do_collection_query(collection, "places", limit, offset)
+
+def get_recordings_in_collection(collection, limit=None, offset=None):
+    """List the recordings in a collection.
+    Returns a dict with a 'collection' key, which again has a 'recording-list'.
+
+    See `Browsing`_ for how to use `limit` and `offset`.
+    """
+    return _do_collection_query(collection, "recordings", limit, offset)
+
+def get_works_in_collection(collection, limit=None, offset=None):
+    """List the works in a collection.
+    Returns a dict with a 'collection' key, which again has a 'work-list'.
+
+    See `Browsing`_ for how to use `limit` and `offset`.
+    """
+    return _do_collection_query(collection, "works", limit, offset)
 
 
 # Submission methods

test/data/collection/20562e36-c7cc-44fb-96b4-486d51a1174b-events.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><metadata xmlns="http://musicbrainz.org/ns/mmd-2.0#"><collection entity-type="event" id="20562e36-c7cc-44fb-96b4-486d51a1174b" type="Event"><name>event collection</name><editor>alastairp</editor><event-list count="1"><event id="fe4bce99-6e9b-4050-9681-eac48cdf3199"><name>T on the Fringe 2006</name><life-span><begin>2006-08-04</begin><end>2006-08-30</end></life-span></event></event-list></collection></metadata>

test/data/collection/2326c2e8-be4b-4300-acc6-dbd0adf5645b-works.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><metadata xmlns="http://musicbrainz.org/ns/mmd-2.0#"><collection id="2326c2e8-be4b-4300-acc6-dbd0adf5645b" type="Work" entity-type="work"><name>work collection</name><editor>alastairp</editor><work-list count="1"><work id="541f07e2-389d-4a0c-8a97-896b6752dd35"><title>Maggot Brain</title></work></work-list></collection></metadata>

test/data/collection/29611d8b-b3ad-4ffb-acb5-27f77342a5b0-artists.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><metadata xmlns="http://musicbrainz.org/ns/mmd-2.0#"><collection entity-type="artist" type="Artist" id="29611d8b-b3ad-4ffb-acb5-27f77342a5b0"><name>artist collection</name><editor>alastairp</editor><artist-list count="1"><artist id="0383dadf-2a4e-4d10-a46a-e9e041da8eb3"><name>Queen</name><sort-name>Queen</sort-name><disambiguation>UK rock group</disambiguation><life-span><begin>1970-06-27</begin></life-span></artist></artist-list></collection></metadata>

test/data/collection/855b134e-9a3b-4717-8df8-8c4838d89924-places.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><metadata xmlns="http://musicbrainz.org/ns/mmd-2.0#"><collection entity-type="place" type="Place" id="855b134e-9a3b-4717-8df8-8c4838d89924"><name>place collection</name><editor>alastairp</editor><place-list count="1"><place id="f75dd832-8cac-4068-8432-de0472866d33"><name>San Francisco Bath House</name><disambiguation>aka 'San Fran'</disambiguation><address>171 Cuba Street, Wellington, New Zealand</address></place></place-list></collection></metadata>

test/data/collection/a91320b2-fd2f-4a93-9e4e-603d16d514b6-recordings.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><metadata xmlns="http://musicbrainz.org/ns/mmd-2.0#"><collection type="Recording" id="a91320b2-fd2f-4a93-9e4e-603d16d514b6" entity-type="recording"><name>recording collection</name><editor>alastairp</editor><recording-list count="1"><recording id="be462d72-b71b-4cb0-8f65-3434f99822a7"><title>Maggot Brain</title><length>1201000</length></recording></recording-list></collection></metadata>