moving files around after repository merger

1 files changed, 0 insertions, 495 deletions

diff --git a/src-py/db_controller.py b/src-py/db_controller.py
deleted file mode 100644
index c17fd0cd..00000000
--- a/src-py/db_controller.py
+++ /dev/null
@@ -1,495 +0,0 @@
-#!/usr/bin/python
-
-import json
-import logging
-import os
-import re
-import traceback
-
-from db_driver import DB_Driver_REST, DB_Driver_Base
-from model.graph import Attr_Diff
-from model.graph import Topo_Diff
-from neo4j_util import DB_result_set
-from neo4j_util import cfmt
-import neo4j_util as db_util
-from model.model import Link
-
-log = logging.getLogger('rhizi')
-
-class DB_op(object):
-    """
-    tx wrapped DB operation possibly composing multiple DB queries
-    """
-    def __init__(self):
-        self.statement_set = []
-        self.result_set = []
-        self.error_set = None
-        self.tx_id = None
-        self.tx_commit_url = None  # cached from response to tx begin
-
-    def parse_tx_id(self, tx_commit_url):
-        m = re.search('/(?P<id>\d+)/commit$', tx_commit_url)
-        id_str = m.group('id')
-        self.tx_id = int(id_str)
-
-    def add_statement(self, query, query_params={}):
-        """
-        add a DB query language statement
-        @return: statement index (zero based)
-        """
-        s = db_util.statement_to_REST_form(query, query_params)
-        self.statement_set.append(s)
-        return len(self.statement_set)
-
-    def __iter__(self):
-        """
-        iterate over (statement_index, statement, result, error)
-        where result & error are mutually exclusive
-
-        note: statement_index is zero based
-
-        TODO: handle partial iteration due to error_set being non-empty
-        """
-        i = 0
-        r_set_len = len(self.result_set)
-        for s in self.statement_set:
-            r_set = None  # row-set
-            if i < r_set_len:  # support partial result recovery
-                r_set = DB_result_set(self.result_set[i])
-            yield (i, s, r_set)
-            i = i + 1
-
-    def parse_multi_statement_response_data(self, data):
-        pass
-
-    @property
-    def name(self):
-        return self.__class__.__name__
-
-    def process_result_set(self):
-        """
-        DB op can issue complex sets of quries all at once - this helper method
-        assists in parsing response data from a single query.
-        """
-        ret = []
-        for _, _, r_set in self:
-            for row in r_set:
-                for col in row:
-                    ret.append(col)
-        return ret
-
-class DB_composed_op(DB_op):
-    def __init__(self):
-        super(DB_composed_op, self).__init__()
-        self.sub_op_set = []
-
-    def __assert_false_statement_access(self):
-        assert False, "composed_op may not contain statements, only sub-ops"
-
-    def add_statement(self, query, query_params={}):
-        self.__assert_false_statement_access()
-
-    def add_sub_op(self, op):
-        self.sub_op_set.append(op)
-
-    def __getattribute__(self, attr):
-        """
-        intercept 'statement_set' attr get
-        """
-        if attr == 'statement_set':
-            self.__assert_false_statement_access()
-
-        return object.__getattribute__(self, attr)
-
-    def __iter__(self):
-        """
-        iterate over sub_op_set
-        """
-        for s_op in self.sub_op_set:
-            yield s_op
-
-    def process_result_set(self):
-        ret = []
-        for s_op in self:
-            s_result_set = s_op.process_result_set()
-            ret.append(s_result_set)
-        return ret
-
-class DBO_cypher_query(DB_op):
-    """
-    freeform cypher query
-    """
-    def __init__(self, q, q_params={}):
-        super(DBO_cypher_query, self).__init__()
-        self.add_statement(q, q_params)
-
-class DBO_topo_diff_commit(DB_composed_op):
-    """
-    commit a Topo_Diff
-    """
-    def __init__(self, topo_diff):
-        super(DBO_topo_diff_commit, self).__init__()
-
-        n_add_map = db_util.meta_attr_list_to_meta_attr_map(topo_diff.node_set_add)
-        l_add_map = db_util.meta_attr_list_to_meta_attr_map(topo_diff.link_set_add)
-        l_rm_set = topo_diff.link_set_rm
-        n_rm_set = topo_diff.node_set_rm
-
-        #
-        # [!] order critical
-        #
-        if len(n_add_map) > 0:
-            op = DBO_add_node_set(n_add_map)
-            self.add_sub_op(op)
-
-        if len(l_add_map) > 0:
-            op = DBO_add_link_set(l_add_map)
-            self.add_sub_op(op)
-
-        if len(l_rm_set) > 0:
-            op = DBO_rm_link_set(l_rm_set)
-            self.add_sub_op(op)
-
-        if len(n_rm_set) > 0:
-            op = DBO_rm_node_set(n_rm_set)
-            self.add_sub_op(op)
-
-class DBO_attr_diff_commit(DB_op):
-    """
-    commit a Attr_Diff
-    """
-    def __init__(self, attr_diff):
-        super(DBO_attr_diff_commit, self).__init__()
-
-        for id_attr, n_attr_diff in attr_diff.type__node.items():
-            # TODO parameterize multiple attr removal
-            r_attr_set = n_attr_diff['__attr_remove']
-            w_attr_set = n_attr_diff['__attr_write']
-
-            assert len(r_attr_set) > 0 or len(w_attr_set) > 0
-
-            q_arr = ["match (n {id: {id}}) ",
-                     "return n.id, n"]
-            q_param_set = {'id': id_attr}
-
-            if len(r_attr_set) > 0:
-                stmt_attr_rm = "remove " + ', '.join(['n.' + attr for attr in r_attr_set])
-                q_arr.insert(1, stmt_attr_rm)
-
-            if len(w_attr_set) > 0:
-                stmt_attr_set = "set n += {attr_set}"
-                q_arr.insert(1, stmt_attr_set)
-                q_param_set['attr_set'] = w_attr_set
-
-            q = " ".join(q_arr)
-            self.add_statement(q, q_param_set)
-
-        for id_attr, n_attr_diff in attr_diff.type__link.items():
-            pass  # TODO: handl link attr_diffs
-
-    def process_result_set(self):
-        ret = {}
-        for _, _, r_set in self:
-            for row in r_set:
-                n_id, n = [v for v in row]  # we expect a [n_id, n] array
-                ret[n_id] = n
-        return ret
-
-class DBO_add_node_set(DB_op):
-    def __init__(self, node_map):
-        """
-        DB op: add node set
-
-        @param node_map: node-type to node-set map
-        @return: set of new node DB ids
-        """
-        super(DBO_add_node_set, self).__init__()
-        for q, q_param_set in db_util.gen_query_create_from_node_map(node_map):
-            self.add_statement(q, q_param_set)
-
-    def process_result_set(self):
-        id_set = []
-        for _, _, row_set in self:
-            for row in row_set:
-                for clo in row:
-                    id_set.append(clo)
-
-        return id_set
-
-class DBO_add_link_set(DB_op):
-    def __init__(self, link_map):
-        """
-        @param link_map: is a link-type to link-set map - see model.link
-        @return: set of new node DB ids
-        """
-        super(DBO_add_link_set, self).__init__()
-        for q, q_params in db_util.gen_query_create_from_link_map(link_map):
-            self.add_statement(q, q_params)
-
-    def process_result_set(self):
-        id_set = []
-        for _, _, r_set in self:
-            for row in r_set:
-                for col_val in row:
-                    id_set.append(col_val)
-
-        return id_set
-
-class DBO_load_node_set_by_DB_id(DB_op):
-    def __init__(self, id_set):
-        """
-        load a set of nodes whose DB id is in id_set
-
-        @param id_set: DB node id set
-        @return: loaded node set or an empty set if no match was found
-        """
-        super(DBO_load_node_set_by_DB_id, self).__init__()
-        q = "start n=node({id_set}) return n"
-        self.add_statement(q, { 'id_set': id_set})
-
-class DBO_match_node_id_set(DB_op):
-
-    def __init__(self, filter_label=None, filter_attr_map={}):
-        """
-        match a set of nodes by type / attr_map
-
-        @param filter_label: node type filter
-        @param filter_attr_map: is a filter_key to filter_value_set map of
-               possible attributes to match against, eg.:
-               { 'id':[0,1], 'color: ['red','blue'] }
-        @return: a set of node DB id's
-        """
-        super(DBO_match_node_id_set, self).__init__()
-
-        q = "match (n{filter_label}) {where_clause} return id(n)"
-        q = cfmt(q, filter_label="" if not filter_label else ":" + filter_label)
-        q = cfmt(q, where_clause=db_util.gen_clause_where_from_filter_attr_map(filter_attr_map))
-
-        q_params = filter_attr_map
-
-        self.add_statement(q, q_params)
-
-class DBO_match_node_set_by_id_attribute(DBO_match_node_id_set):
-    def __init__(self, id_set):
-        """
-        convenience op: load a set of nodes by their 'id' attribute != DB node id
-        """
-        assert isinstance(id_set, list)
-
-        super(DBO_match_node_set_by_id_attribute, self).__init__(filter_attr_map={'id': id_set})
-
-
-class DBO_load_link_set(DB_op):
-    def __init__(self, link_ptr_set):
-        """
-        match a set of sets of links by source/target node id attributes
-
-        This class should be instantiated through a static factory function
-
-        @link_ptr_set link pointer set
-        @return: a set of loaded links
-        """
-        super(DBO_load_link_set, self).__init__()
-
-        for l_ptr in link_ptr_set:
-            if not l_ptr.src_id:
-                q = "match ()-[r]->({id: {dst_id}}) return r"
-                q_params = {'dst_id': l_ptr.dst_id}
-            elif not l_ptr.dst_id:
-                q = "match ({id: {src_id}})-[r]->() return r"
-                q_params = {'src_id': l_ptr.src_id}
-            else:
-                q = "match ({id: {src_id}})-[r]->({id: {dst_id}}) return r"
-                q_params = {'src_id': l_ptr.src_id, 'dst_id': l_ptr.dst_id}
-
-            self.add_statement(q, q_params)
-
-    @staticmethod
-    def init_from_link_ptr(l_ptr):
-        return DBO_load_link_set([l_ptr])
-
-    @staticmethod
-    def init_from_link_ptr_set(l_ptr_set):
-        return DBO_load_link_set(l_ptr_set)
-
-class DBO_match_link_id_set(DB_op):
-    def __init__(self, filter_label=None, filter_attr_map={}):
-        """
-        load an id-set of links
-
-        @param filter_label: link type filter
-        @param filter_attr_map: is a filter_key to filter_value_set map of
-               attributes to match link properties against
-        @return: a set of loaded link ids
-        """
-        super(DBO_match_link_id_set, self).__init__()
-
-        q_arr = ['match ()-[r{filter_label} {filter_attr}]->()',
-                 'return id(r)'
-        ]
-        q = ' '.join(q_arr)
-        q = cfmt(q, filter_label="" if not filter_label else ":" + filter_label)
-        q = cfmt(q, filter_attr=db_util.gen_clause_attr_filter_from_filter_attr_map(filter_attr_map))
-        q_params = {k: v[0] for (k, v) in filter_attr_map.items()}  # pass on only first value from each value set
-
-        self.add_statement(q, q_params)
-
-class DBO_rm_node_set(DB_op):
-    def __init__(self, id_set, rm_links=False):
-        """
-        remove node set
-        """
-        assert len(id_set) > 0, __name__ + ': empty id set'
-
-        super(DBO_rm_node_set, self).__init__()
-
-        if rm_links:
-            q_arr = ['match (n)',
-                     'where n.id in {id_set}',
-                     'optional match (n)-[r]-()',
-                     'delete n,r',
-                     'return {id_set}'
-             ]
-        else:
-            q_arr = ['match (n)',
-                     'where n.id in {id_set}',
-                     'delete n',
-                     'return {id_set}'
-             ]
-
-        q = ' '.join(q_arr)
-        q_params = {'id_set': id_set}
-        self.add_statement(q, q_params)
-
-class DBO_rm_link_set(DB_op):
-    def __init__(self, id_set):
-        """
-        remove link set
-
-        [!] when removing as a result of node removal, use DBO_rm_node_set 
-        along with rm_links=True
-        """
-        assert len(id_set) > 0, __name__ + ': empty id set'
-
-        super(DBO_rm_link_set, self).__init__()
-
-        q_arr = ['match ()-[r]->()',
-                 'where r.id in {id_set}',
-                 'delete r',
-                 'return {id_set}'
-         ]
-
-        q = ' '.join(q_arr)
-        q_params = {'id_set': id_set}
-        self.add_statement(q, q_params)
-
-class DBO_rz_clone(DB_op):
-    def __init__(self, filter_label=None, limit=128):
-        """
-        clone rhizi
-
-        @return: a dict: {'node_set': n_set,
-                          'link_set': l_set }
-                 where l_set is a list of (src.id, dst.id, link) tuples
-        """
-        super(DBO_rz_clone, self).__init__()
-
-        self.limit = limit
-        self.skip = 0
-
-        q_arr = ['match (n)' if not filter_label else 'match (n:%s)' % (filter_label),
-                 'optional match (n)-[r]->(m)',
-                 'with n,r,m',
-                 'order by n.id',
-                 'skip %d' % (self.skip),
-                 'limit %d' % (self.limit),
-                 'return n,labels(n),collect([m.id, r, type(r)])']
-
-        q = ' '.join(q_arr)
-        self.add_statement(q)
-
-    def process_result_set(self):
-        ret_n_set = []
-        ret_l_set = []
-        for _, _, row_set in self:
-            for row in row_set:
-                n, n_lbl_set, l_set = row.items()  # see query return statement
-
-                # reconstruct nodes
-                assert None != n['id']
-
-                n['__label_set'] = n_lbl_set
-                ret_n_set.append(n)
-
-                # reconstruct links from link tuples
-                for l_tuple in l_set:
-                    assert 3 == len(l_tuple)  # see query return statement
-
-                    if None == l_tuple[0]:  # check if link dst is None
-                        # as link matching is optional, collect may yield empty sets
-                        continue
-
-                    l = l_tuple[1]
-                    l['__src_id'] = n['id']
-                    l['__dst_id'] = l_tuple[0]
-                    l['__label_set'] = [l_tuple[2]]  # box single value returned by type()
-
-                    ret_l_set.append(l)
-
-        return {'node_set': ret_n_set,
-                'link_set': ret_l_set }
-
-class DB_Controller:
-    """
-    neo4j DB controller
-    """
-    def __init__(self, config, db_driver_class=None):
-        self.config = config
-        if not db_driver_class:
-            self.db_driver = DB_Driver_REST(self.config.db_base_url)
-        else:
-            self.db_driver = db_driver_class()
-        assert isinstance(self.db_driver, DB_Driver_Base)
-
-    def exec_op(self, op):
-        """
-        execute operation within a DB transaction
-        """
-        if isinstance(op, DB_composed_op):
-            # construct a list comprehension composed of all sup_op statements
-            for s_op in op.sub_op_set:
-                self.exec_op(s_op)
-            return op.process_result_set()
-
-        try:
-            self.db_driver.begin_tx(op)
-            self.db_driver.exec_statement_set(op)
-            self.db_driver.commit_tx(op)
-
-            ret = op.process_result_set()
-
-            log.debug('exec_op:' + op.name + ': return value: ' + str(ret))
-            return ret
-        except Exception as e:
-            # here we watch for IOExecptions, etc - not db errors
-            # these are returned in the db response itself
-            log.error(e.message)
-            log.error(traceback.print_exc())
-            raise e
-
-    def create_db_op(self, f_work, f_cont):
-        ret = DB_op(f_work, f_cont)
-        return ret
-
-    def exec_cypher_query(self, q):
-        """
-        @deprecated: use DBO_cypher_query
-        """
-
-        # call post and not db_util.post_neo4j to avoid response key errors
-        try:
-            db_util.post(self.config.db_base_url + '/db/data/cypher', {"query" : q})
-        except Exception as e:
-            log.error(e.message)
-            log.error(traceback.print_exc())
-            raise e