[db-api/configuration] simplify db-api and configuration so that all the connection information is in the repository url, closes #2521848 eg no more specific option of pyro ns host, group, etc. This also fixes broken ZMQ sources. Changes: * dropped pyro-ns-host, pyro-instance-id, pyro-ns-group from client side config, in favor of repository-uri. No migration done, supposing there is **no web-only config** in the wild. Also stop discovering the connection method through the repo_method class attribute of the configuration, varying according to the configuration class. This is a first step on the way to a simpler configuration handling. Notice those pyro options are still available for repository only / all-in-one configurations as they are needed to configure the pyro server. * stop telling connection method using ConnectionProperties, this is so boring. Also, drop _cnxtype from Connection and cnxtype from Session. The former is replaced by a is_repo_in_memory property and the later is totaly useless. * deprecate in_memory_cnx which becomes useless, use _repo_connect instead

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from cubicweb import UnknownEid

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source, = __args__

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sql("DELETE FROM entities WHERE type='Int'")

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ecnx = session.cnxset.connection(source)

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for e in rql('Any X WHERE X cw_source S, S name %(name)s', {'name': source}).entities():

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    meta = e.cw_metainformation()

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    assert meta['source']['uri'] == source

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    try:

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        suri = ecnx.describe(meta['extid'])[1]

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    except UnknownEid:

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        print 'cant describe', e.__regid__, e.eid, meta

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        continue

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    if suri != 'system':

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        try:

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            print 'deleting', e.__regid__, e.eid, suri, e.dc_title().encode('utf8')

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            repo.delete_info(session, e, suri, scleanup=e.eid)

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        except UnknownEid:

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            print '  cant delete', e.__regid__, e.eid, meta

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commit()