Commit b2430e66 authored by Jean-Paul Smets's avatar Jean-Paul Smets

Implemented view system in sqlcatalog

Added ability to retrieve src of query (src__ parameter in queryResults)


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@1938 20353a03-c40f-0410-a6d1-a30d3c3de9de
parent 4b1a7b67
......@@ -538,6 +538,35 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
topic_search_keys = self.sql_catalog_topic_search_keys
multivalue_keys = self.sql_catalog_multivalue_keys
# Define related maps
# each tuple has the form (key, 'table1,table2,table3/column/where_expression')
related_tuples = self.sql_catalog_related_keys
LOG('related_tuples', 0, str(related_tuples))
related_keys = []
related_method = {}
related_table_map = {}
related_column = {}
related_table_map = {}
table_rename_index = 0
related_methods = {} # related methods which need to be used
for t in related_tuples:
t_tuple = t.split('|')
key = t_tuple[0].strip()
join_tuple = t_tuple[1].strip().split('/')
LOG('related_tuples', 0, str(join_tuple))
related_keys.append(key)
method_id = join_tuple[2]
related_method[key] = method_id
related_column[key] = join_tuple[1]
# Rename tables to prevent conflicts
if not related_table_map.has_key(method_id):
map_list = []
for table_id in join_tuple[0].split(','):
map_list.append((table_id,
"related_%s_%s" % (table_id, table_rename_index))) # We add an index in order to alias tables in the join
table_rename_index += 1 # and prevent name conflicts
related_table_map[method_id] = map_list
# We take additional parameters from the REQUEST
# and give priority to the REQUEST
if REQUEST is not None:
......@@ -546,11 +575,15 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
# Only copy a few keys from the REQUEST
if key in self.sql_catalog_request_keys:
kw[key] = REQUEST[key]
# Let us try first not to use this
#for key in related_keys:
# if REQUEST.has_key(key):
# kw[key] = REQUEST[key]
# Let us start building the where_expression
if kw:
where_expression = []
from_table_dict = {'catalog': 1} # Always include catalog table
from_table_dict = {'catalog' : 'catalog'} # Always include catalog table
# Rebuild keywords to behave as new style query (_usage='toto:titi' becomes {'toto':'titi'})
new_kw = {}
usage_len = len('_usage')
......@@ -573,19 +606,28 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
value = kw[key]
if key not in ('where_expression', 'sort-on', 'sort_on', 'sort-order', 'sort_order'):
# Make sure key belongs to schema
if key in acceptable_keys:
key_is_acceptable = key in acceptable_keys # Only calculate once
key_is_related = key in related_keys
if key_is_acceptable or key_is_related:
if key_is_related: # relation system has priority (ex. security_uid)
# We must rename the key
method_id = related_method[key]
if not related_methods.has_key(method_id):
related_methods[method_id] = 1
key = "%s.%s" % (related_table_map[method_id][-1][-1], related_column[key]) # Prepend renamed table name
elif key_is_acceptable:
if key.find('.') < 0:
# if the key is only used by one table, just append its name
if len(acceptable_key_map[key]) == 1 :
key = acceptable_key_map[key][0] + '.' + key
# query_table specifies what table name should be used
# query_table specifies what table name should be used by default
elif query_table:
key = query_table + '.' + key
elif key == 'uid':
# uid is always ambiguous so we can only change it here
key = 'catalog.uid'
# Add table to table dict
from_table_dict[acceptable_key_map[key][0]] = 1 # We use catalog by default
from_table_dict[acceptable_key_map[key][0]] = acceptable_key_map[key][0] # We use catalog by default
# Default case: variable equality
if type(value) is type(''):
if value != '':
......@@ -662,11 +704,28 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
elif query_table:
topic_key = query_table + '.' + topic_key
# Add table to table dict
from_table_dict[acceptable_key_map[topic_key][0]] = 1 # We use catalog by default
from_table_dict[acceptable_key_map[topic_key][0]] = acceptable_key_map[topic_key][0] # We use catalog by default
query_item += ["%s = 1" % topic_key]
# Join
if len(query_item) > 0:
where_expression += ['(%s)' % join(query_item, ' %s ' % topic_operator)]
# Calculate extra where_expression based on required joins
for k, tid in from_table_dict.items():
if k != query_table:
where_expression.append('%s.uid = %s.uid' % (query_table, tid))
# Calculate extra where_expressions based on related definition
related_join_expression = []
for method_id in related_methods.keys():
related_method = getattr(self, method_id, None)
if related_method is not None:
table_id = {'src__' : 1} # Return query source, do not evaluate
table_index = 0
for t_tuple in related_table_map[method_id]:
table_id['table_%s' % table_index] = t_tuple[1] # table_X is set to mapped id
from_table_dict[t_tuple[1]] = t_tuple[0]
table_index += 1
where_expression.append(related_method(**table_id))
# Concatenate where_expressions
if kw.get('where_expression'):
if len(where_expression) > 0:
where_expression = "(%s) AND (%s)" % (kw['where_expression'], join(where_expression, ' AND ') )
......@@ -714,10 +773,10 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
elif query_table:
k = query_table + '.' + k
if v == 'descending' or v == 'reverse':
from_table_dict[acceptable_key_map[k][0]] = 1 # We need this table to sort on it
from_table_dict[acceptable_key_map[k][0]] = acceptable_key_map[k][0] # We need this table to sort on it
new_sort_index += ['%s DESC' % k]
else:
from_table_dict[acceptable_key_map[k][0]] = 1 # We need this table to sort on it
from_table_dict[acceptable_key_map[k][0]] = acceptable_key_map[k][0] # We need this table to sort on it
new_sort_index += ['%s' % k]
sort_index = join(new_sort_index,',')
sort_on = str(sort_index)
......@@ -725,11 +784,11 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
pass
# Use a dictionary at the moment.
return { 'from_table_list' : from_table_dict.keys(),
return { 'from_table_list' : from_table_dict.items(),
'order_by_expression' : sort_on,
'where_expression' : where_expression }
def queryResults(self, sql_method, REQUEST=None, used=None, **kw):
def queryResults(self, sql_method, REQUEST=None, used=None, src__=0, **kw):
""" Returns a list of brains from a set of constraints on variables """
query = self.buildSQLQuery(REQUEST=REQUEST, **kw)
kw['where_expression'] = query['where_expression']
......@@ -741,7 +800,7 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
#LOG('acceptable_key_map',0,'acceptable_key_map: %s' % str(acceptable_key_map))
#LOG('queryResults',0,'kw: %s' % str(kw))
#LOG('queryResults',0,'from_table_list: %s' % str(from_table_dict.keys()))
return sql_method(**kw)
return sql_method(src__=src__, **kw)
def searchResults(self, REQUEST=None, used=None, **kw):
""" Builds a complex SQL where_expression to simulate ZCalatog behaviour """
......
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