source: mauRepo/MolesManager/trunk/src/libs/migration/processor/dataEntity.py @ 8269

Subversion URL: http://proj.badc.rl.ac.uk/svn/ndg/mauRepo/MolesManager/trunk/src/libs/migration/processor/dataEntity.py@8269
Revision 8269, 9.6 KB checked in by mnagni, 9 years ago (diff)

Complete - # 22434: CEDA Observation - keywords (following Gemini method)
 http://team.ceda.ac.uk/trac/ceda/ticket/22434
Line 
1'''
2Created on 15 Nov 2011
3
4@author: mnagni
5'''
6from MolesManager.moles3epb import Moles3EPB
7from ea_model.ceda_metadatamodel.ceda_observationcollection.ceda_observationcollection import \
8    CEDA_ObservationCollection
9from libs.epb import EPB
10from libs.migration.MigrationEPB import MigrationEPB
11from libs.migration.exception.exceptions import MigrationObjectException, NoAssociatedAuthor,\
12    migrationObjectDescription, NoAssociatedDeployments
13from libs.migration.processor.commons import findDeploymentsInDE,\
14    createMD_Identifier, extractContent, MD_CODE_MOLES2_CITATION,\
15    hasAtomDocumentSameHash, createCI_Citation, createCI_Date, findPublishedDate,\
16    isoDateTimeStringToTimeDate, findUpdatedDate, createDate,\
17    calculateHash, extractUpdateFrequency, findDOIInMigrationDocument
18from libs.migration.processor.deployment import DeploymentProcessor
19from ea_model.moles3_4.utilities.mo_publicationstatevalue import MO_PublicationStateValue
20from logging import StreamHandler
21import logging
22from ea_model.iso_19115_2006_metadata_corrigendum.citation_and_responsible_party_information.ci_datetypecode import CI_DateTypeCode
23from MolesManager.ceda_guid import CedaGUID
24from ea_model.iso_19115_2006_metadata_corrigendum.maintenance_information.md_maintenancefrequencycode import MD_MaintenanceFrequencyCode
25
26class DataEntityProcessor(object):
27    log = logging.getLogger('DataEntityProcessor')
28    log.addHandler(StreamHandler())
29    log.setLevel(logging.INFO) 
30    '''
31        Processes a DataEntityMigration item. Note that each DataEntity is associated to a "dataent_xxxx" file in Moles2
32    '''       
33    def __init__(self, dataEntityMigration, migrationSessions):
34        '''
35            Initializes the class
36            @param _dataEntityMigration: the DataEntityMigration instance
37            @param migrationSessions: a MigrationSessions instance
38        '''
39        if dataEntityMigration is None:
40            raise MigrationObjectException("DataEntityProcessor cannot process an None item")
41        self._dataEntityMigration = dataEntityMigration       
42        self.migrationSessions = migrationSessions
43   
44    def _processCitation(self, ceda_observationCollection):
45        # TDB - Check that if is an update or not!
46        contentDict = extractContent(self._dataEntityMigration)
47        if not contentDict.has_key('citation'):
48            DataEntityProcessor.log.info("The migration object "+ migrationObjectDescription(self._dataEntityMigration) \
49                                         + " has not associated cedacat:citation")
50        else:
51            ci_dates = []
52            doc_date = findPublishedDate(self._dataEntityMigration)           
53            if doc_date:
54                i_date = createDate(isoDateTimeStringToTimeDate(doc_date))           
55                ci_dates.append(createCI_Date(CI_DateTypeCode.cl_publication, date = i_date))
56
57            doc_date = findUpdatedDate(self._dataEntityMigration)           
58            if doc_date:
59                i_date = createDate(isoDateTimeStringToTimeDate(doc_date))               
60                ci_dates.append(createCI_Date(CI_DateTypeCode.cl_revision, date = i_date))
61               
62            i_citation = createCI_Citation(title = 'ceda_moles2_citation', date=ci_dates)
63            newIdentifier = createMD_Identifier(code = contentDict['citation'], authority=i_citation)
64            ceda_observationCollection.identifier.append(newIdentifier)
65   
66    def _getObservationCollection(self):
67        return EPB.search(CEDA_ObservationCollection, self._dataEntityMigration.ceda_observation_coll_id, self.migrationSessions.molesSession)
68   
69    def _processObservationCollection(self):                                   
70        #Moles3 object exists...
71        if self._dataEntityMigration.ceda_observation_coll_id: 
72            # ...and the data entity document has not changed
73            if hasAtomDocumentSameHash(self._dataEntityMigration):
74                return self._getObservationCollection()
75            else:
76                self.updateObservationCollection()
77
78        #... does not exist so create it
79        return self.createNewObservationCollection()
80
81    def updateObservationCollection(self):
82        """
83            Updated the existing CEDA_ObservationCollection instance binded to the self._dataEntityMigration object.
84            @return: the persisted and updated CEDA_ObservationCollection element
85        """       
86        ceda_observationCollection = self._getObservationCollection()
87        # TBD
88        #self._processCitation(ceda_observationCollection)
89        return ceda_observationCollection
90
91    def _create(self): 
92        """
93            Creates a new CEDA_ObservationCollection instance in the Moles3DB using the self._dataEntityMigration object.
94            If successful adds the new instance ID to the related DataEntityMigration object
95            @return: the persisted CEDA_ObservationCollection element
96        """
97        ceda_observationCollection = CEDA_ObservationCollection()
98        self._processCitation(ceda_observationCollection)
99        #self._processResult(ceda_observationCollection)
100        ceda_observationCollection.publicationState = MO_PublicationStateValue.cl_working
101                 
102        Moles3EPB.addCedaObject(ceda_observationCollection, self.migrationSessions.molesSession, True)
103       
104        MigrationEPB.associateObservationCollectionToDataEntity(self._dataEntityMigration, ceda_observationCollection.id, \
105                                                                self.migrationSessions.migrationSession, True)
106       
107        #Adds the CedaGUID
108        ceda_guid = CedaGUID()
109        ceda_guid.id = calculateHash(self._dataEntityMigration.data_ent_id)
110        ceda_guid.ceda_observationcollection = ceda_observationCollection.id
111        Moles3EPB.addCedaObject(ceda_guid, self.migrationSessions.molesSession, True)
112        DataEntityProcessor.log.info("GUI for this ObservationCollection: %s" % (ceda_guid.id))
113       
114        return ceda_observationCollection
115
116    def _processDeploymentMigration(self, deploymentMigration, single_deployment):                                     
117        deProcessor = DeploymentProcessor(self._dataEntityMigration, deploymentMigration, self.migrationSessions)
118        try:
119            DataEntityProcessor.log.info("Processing deployment: %s" % (migrationObjectDescription(deploymentMigration)))
120            ceda_observation = deProcessor.process()
121            if ceda_observation.resultAccumulation is None:
122                    updateFrequency = extractUpdateFrequency(self._dataEntityMigration)
123                    if updateFrequency:
124                        ceda_observation.resultAccumulation = MD_MaintenanceFrequencyCode.from_string(updateFrequency)
125           
126            doi = findDOIInMigrationDocument(deploymentMigration)                                                             
127            if single_deployment:
128                if doi is None:
129                    doi = findDOIInMigrationDocument(self._dataEntityMigration)
130                #collection_identifier = Moles3EPB.extractCollectionIdentifierByTitle(MD_CODE_MOLES2_CITATION, self.migrationSessions.molesSession)
131                #if collection_identifier.count()==1:
132                #    ceda_observation.identifier.append(collection_identifier.first())
133           
134            deProcessor.assignDOI(ceda_observation, doi)
135               
136
137            self.migrationSessions.molesSession.commit()
138        except NoAssociatedAuthor as ex:
139            raise ex                 
140        except Exception as ex:
141            self.migrationSessions.molesSession.rollback()
142            self.migrationSessions.migrationSession.rollback()               
143            raise MigrationObjectException(ex)                     
144       
145        return ceda_observation
146   
147    def _update(self): 
148        # ...and the data entity document has not changed
149        if hasAtomDocumentSameHash(self._dataEntityMigration):
150                return self._getObservationCollection()
151        else:
152                return self.updateObservationCollection()   
153   
154    def process(self):
155        cedaObservationCollection = None
156        exs = []
157        DataEntityProcessor.log.info("Processing dataEntity: %s" % (migrationObjectDescription(self._dataEntityMigration)))
158        try :
159            if self._dataEntityMigration.ceda_observation_coll_id:
160                cedaObservationCollection = self._update()
161            else:
162                cedaObservationCollection = self._create()
163        except Exception as ex:
164            exs.append(ex)
165            return exs       
166
167       
168        #retrieves the associated deployment links from the data_entity
169        deploymentsLinks = findDeploymentsInDE(self._dataEntityMigration)
170       
171        #retrieves the DataEntityMigration sorted by creation date
172        deploymentMigrations = MigrationEPB.getAllDeploymentsMigrationByDataEntitySortedByDate( \
173                                                self._dataEntityMigration, deploymentsLinks, self.migrationSessions.migrationSession)
174        howManydm = deploymentMigrations.count()
175        if howManydm == 0:
176            exs.append(NoAssociatedDeployments(self._dataEntityMigration))
177        for deploymentMigration in deploymentMigrations:
178            try:
179                ceda_observation = self._processDeploymentMigration(deploymentMigration, howManydm == 1)
180                cedaObservationCollection.member.append(ceda_observation)                                       
181            except Exception as ex:
182                exs.append(ex)
183            except RuntimeError as er:
184                print er               
185        self.migrationSessions.molesSession.commit()                       
186               
187        return exs
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