class EmbedXMP:
def __init__(self, deferred, workspace, item_id, variant_name):
self.deferred = deferred
self.workspace = workspace
self.proxy = Proxy('XMPEmbedder')
self.item = Item.objects.get(pk = item_id)
self.item, self.component = get_source_rendition(item_id, variant_name, workspace)
def _reset_modified_flag(self):
"""
Reset flags modified in Component and in its metadata
"""
comp_metadata = self.component.metadata.filter(modified = True)
for m in comp_metadata:
m.modified = False
m.save()
self.component.modified_metadata = False
self.component.save()
def _populate(self, dictionary, metadata, structures):
for im in metadata:
if im.schema.namespace.uri not in dictionary:
dictionary[im.schema.namespace.uri] = {'prefix': im.schema.namespace.prefix, 'fields': {}}
if im.schema.field_name not in dictionary[im.schema.namespace.uri]['fields']:
if im.schema.type == 'lang':
dictionary[im.schema.namespace.uri]['fields'][im.schema.field_name] = {'type':im.schema.type,'is_array':im.schema.is_array,'value':[im.value],'qualifier':[im.language], 'xpath':[]}
elif im.schema.type in structures:
dictionary[im.schema.namespace.uri]['fields'][im.schema.field_name] = {'type':im.schema.type,'is_array':im.schema.is_array,'value':[im.value],'qualifier':[],'xpath':[im.xpath]}
else:
dictionary[im.schema.namespace.uri]['fields'][im.schema.field_name] = {'type':im.schema.type,'is_array':im.schema.is_array,'value':[im.value],'qualifier':[],'xpath':[]}
else:
dictionary[im.schema.namespace.uri]['fields'][im.schema.field_name]['value'].append(im.value)
if im.schema.type == 'lang':
dictionary[im.schema.namespace.uri]['fields'][im.schema.field_name]['qualifier'].append(im.language)
elif im.schema.type in structures:
dictionary[im.schema.namespace.uri]['fields'][im.schema.field_name]['xpath'].append(im.xpath)
return dictionary
def _synchronize_metadata(self):
changes = {}
structures = [s.name for s in XMPStructure.objects.all()]
metadata = self.item.metadata.filter(modified = True)
self._populate(changes, metadata, structures)
metadata = self.component.metadata.filter(modified = True)
self._populate(changes, metadata, structures)
return changes
def _cb_embed_reset_xmp(self, result):
if result:
self._reset_modified_flag()
self.deferred.callback(result)
return result
def _cb_error(self, failure):
self.deferred.errback(failure)
return failure
def execute(self):
metadata_dict = self._synchronize_metadata()
d = self.proxy.metadata_synch(self.component.uri, metadata_dict)
d.addCallbacks(self._cb_embed_reset_xmp, self._cb_error)
return d
class EmbedXMP:
def __init__(self, deferred, workspace, item_id, variant_name):
self.deferred = deferred
self.workspace = workspace
self.proxy = Proxy('XMPEmbedder')
self.item = Item.objects.get(pk=item_id)
self.item, self.component = get_source_rendition(
item_id, variant_name, workspace)
def _reset_modified_flag(self):
"""
Reset flags modified in Component and in its metadata
"""
comp_metadata = self.component.metadata.filter(modified=True)
for m in comp_metadata:
m.modified = False
m.save()
self.component.modified_metadata = False
self.component.save()
def _populate(self, dictionary, metadata, structures):
for im in metadata:
if im.schema.namespace.uri not in dictionary:
dictionary[im.schema.namespace.uri] = {
'prefix': im.schema.namespace.prefix,
'fields': {}
}
if im.schema.field_name not in dictionary[
im.schema.namespace.uri]['fields']:
if im.schema.type == 'lang':
dictionary[im.schema.namespace.uri]['fields'][
im.schema.field_name] = {
'type': im.schema.type,
'is_array': im.schema.is_array,
'value': [im.value],
'qualifier': [im.language],
'xpath': []
}
elif im.schema.type in structures:
dictionary[im.schema.namespace.uri]['fields'][
im.schema.field_name] = {
'type': im.schema.type,
'is_array': im.schema.is_array,
'value': [im.value],
'qualifier': [],
'xpath': [im.xpath]
}
else:
dictionary[im.schema.namespace.uri]['fields'][
im.schema.field_name] = {
'type': im.schema.type,
'is_array': im.schema.is_array,
'value': [im.value],
'qualifier': [],
'xpath': []
}
else:
dictionary[im.schema.namespace.uri]['fields'][
im.schema.field_name]['value'].append(im.value)
if im.schema.type == 'lang':
dictionary[im.schema.namespace.uri]['fields'][
im.schema.field_name]['qualifier'].append(im.language)
elif im.schema.type in structures:
dictionary[im.schema.namespace.uri]['fields'][
im.schema.field_name]['xpath'].append(im.xpath)
return dictionary
def _synchronize_metadata(self):
changes = {}
structures = [s.name for s in XMPStructure.objects.all()]
metadata = self.item.metadata.filter(modified=True)
self._populate(changes, metadata, structures)
metadata = self.component.metadata.filter(modified=True)
self._populate(changes, metadata, structures)
return changes
def _cb_embed_reset_xmp(self, result):
if result:
self._reset_modified_flag()
self.deferred.callback(result)
return result
def _cb_error(self, failure):
self.deferred.errback(failure)
return failure
def execute(self):
metadata_dict = self._synchronize_metadata()
d = self.proxy.metadata_synch(self.component.uri, metadata_dict)
d.addCallbacks(self._cb_embed_reset_xmp, self._cb_error)
return d
