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62 Commits

Author SHA1 Message Date
florijan
03c78c1277 BFS syntax changes 
Summary:
- The new BFS syntax implemented as proposed.
- AST BreadthFirstAtom now uses EdgeAtom members: has_range_{true}, upper_bound_, lower_bound_
- Edges data structure now handles all the edge filtering (single or multiple edges), to ease planning. Additional edge filtering (additional Filter op in the plan) is removed. AST EdgeTypeTest is no longer used and is removed.

Current state is stable but there are things left to do:
- BFS property filtering.
- BFS lower_bound_ support.
- Support for lambdas in variable length expansion. This includes obligatory (even if not user_defined) inner_node and inner_edge symbols for easier handling.
- Code-sharing between BFS and variable length expansions.

I'll add asana tasks (and probably start working on them immediately) when/if this lands.

Reviewers: buda, teon.banek, mislav.bradac

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D836
 2017-09-27 16:25:19 +02:00
Teon Banek
d116e0deb1 Generate ParameterLookup instead of PrimitiveLiteral 
Summary:
This is done when the generated AST will be cached.
Remove LiteralsPlugger.

Reviewers: florijan, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D788
 2017-09-13 17:49:34 +02:00
Teon Banek
a83bea0b74 Add ParameterLookup to AST 
Reviewers: florijan, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D782
 2017-09-13 14:28:48 +02:00
Teon Banek
4601f6c368 Add filtering BFS by edge type 
Summary:
Antlr grammar has been updated to support putting edge types after the BFS
symbol. Planner collects edge type filters for BFS and inlines them in the
operator by joining the filter with the user input BFS filter itself. This
requires no change from the standpoint of the operator. On the other hand, in
order to use the faster lookup by a single edge type, `ExpandBreadthFirst`
operator now accept an optional edge type. The edge type is passed from the
planner only if the user is filtering by a single type.

Unit tests as well as tck have been updated.

Reviewers: florijan, mislav.bradac

Reviewed By: florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D777
 2017-09-12 11:29:38 +02:00
Mislav Bradac
74d0a426ab Use \u for utf16 and \U for utf32 
Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D773
 2017-09-09 16:16:30 +02:00
florijan
f68bac922f Map indexing added 
Reviewers: mislav.bradac, buda

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D739
 2017-09-04 09:12:46 +02:00
florijan
ca8fb55ac5 Collect Map added 
Summary:
Tests are on the way. Please first comment if you're OK with this implementation, some points are discussable.

What works now:
```
bash:MEMGRAPH_ROOT/build/>./tests/manual/console 10
MG>MATCH (n) RETURN COLLECT("age_" + n.age, n.height)

+-----------------------------------------------------------------------------------------------------------------------------------+
| COLLECT("age_" + n.age, n.height)                                                                                                 |
+-----------------------------------------------------------------------------------------------------------------------------------+
| {age_10: 176, age_13: 180, age_24: 172, age_25: 179, age_32: 123, age_33: 186, age_37: 147, age_43: 162, age_49: 126, age_6: 170} |
+-----------------------------------------------------------------------------------------------------------------------------------+
```

Reviewers: mislav.bradac, teon.banek, buda

Reviewed By: mislav.bradac, buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D695
 2017-08-25 12:51:18 +02:00
Mislav Bradac
8792b8f931 Implement CASE construct 
Summary: Missing: documentation

Reviewers: buda, teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D685
 2017-08-21 13:30:41 +02:00
florijan
1d112e1141 GraphDbAccessor - style change 
Summary: Not strictly neccessary, but it's been itching me. It took an hour.

Reviewers: buda, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D648
 2017-08-09 16:09:08 +02:00
florijan
b8957c999d Map type now supported 
Summary:
- MapLiteral added
- PropertyLookup on maps added

This is the basic implementation, missing are:
- unit tests
- feature and TCK tests
- documentation
- changelog

That stuff is coming. Please review the implementation (Mislav).

Reviewers: mislav.bradac, buda, teon.banek

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D640
 2017-08-08 14:34:26 +02:00
Teon Banek
c84d8f6bd7 Add BreadthFirstAtom to Ast 
Summary: Add BFS to Cypher grammar

Reviewers: florijan, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D605
 2017-07-29 23:53:31 +02:00
Teon Banek
b33aae42ab Add ALL function to openCypher 
Summary:
Add All expression to Ast
Evaluate All expression
Visit All and generate symbols
Handle All when collecting context during planning

Reviewers: florijan, mislav.bradac, buda

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D587
 2017-07-25 16:32:45 +02:00
Teon Banek
20f2c885c8 Test grammar for variable length with filters 
Summary: Update Cypher grammar to pickup properties after range

Reviewers: mislav.bradac, florijan

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D578
 2017-07-21 11:51:55 +02:00
Teon Banek
b4d2d1ff81 Support variable length path in CypherMainVisitor 
Summary:
Allow expressions for variable length path bounds

Replace test which expected a syntax exception

Since we now allow variable length to have an arbitrary expression, the
test case is obsolete. It was replaced with something that excepts an
expression which wasn't allowed before.

Reviewers: florijan, mislav.bradac, buda

Reviewed By: mislav.bradac

Subscribers: lion, pullbot

Differential Revision: https://phabricator.memgraph.io/D568
 2017-07-20 13:14:50 +02:00
Mislav Bradac
6068a95a0e Move dbms to database 
Summary:
There was only two files in dbms directory so I moved them to database
directory.

Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D540
 2017-07-12 12:44:11 +02:00
Mislav Bradac
d608d523c5 Add CreateIndex conversion to ast 
Reviewers: florijan, teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D522
 2017-07-06 13:32:37 +02:00
Mislav Bradac
3119ae5343 Supstitute named expressions in ast cache 
Reviewers: buda, teon.banek

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D510
 2017-06-26 16:33:17 +02:00
Mislav Bradac
3a922de963 Implementation of new lexer 
Summary: WORK IN PROGRESS

Reviewers: buda, teon.banek, dgleich

Reviewed By: dgleich

Subscribers: dgleich, pullbot

Differential Revision: https://phabricator.memgraph.io/D496
 2017-06-21 16:16:17 +02:00
Mislav Bradac
b6ecc5631f Disallow keywords as symbolic names 
Reviewers: teon.banek, buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D497
 2017-06-20 11:58:14 +02:00
Mislav Bradac
c56eb4310e Remember token positions for literals 
Summary: Remove yaml

Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D466
 2017-06-13 17:11:27 +02:00
Mislav Bradac
f7d540829a Add deep clone to Ast 
Summary: Prepare your aspergillums for blessing this magnificent diff.

Reviewers: buda, teon.banek, florijan

Reviewed By: teon.banek

Subscribers: lion, pullbot

Differential Revision: https://phabricator.memgraph.io/D458
 2017-06-13 12:22:25 +02:00
Teon Banek
e631eb4eb2 Rename directions from LEFT/RIGHT to IN/OUT 
Reviewers: florijan, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D405
 2017-05-30 13:14:34 +02:00
Mislav Bradac
f9cd87bb46 Implement collect aggregation 
Reviewers: teon.banek, florijan

Reviewed By: teon.banek, florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D386
 2017-05-19 17:24:12 +02:00
Teon Banek
28fbeb8e9d Raise if MATCH is after OPTIONAL MATCH 
Reviewers: florijan, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D383
 2017-05-19 16:27:21 +02:00
Mislav Bradac
6a027ea3b2 Throw on key appearing twice in map literal 
Reviewers: teon.banek

Reviewed By: teon.banek

Differential Revision: https://phabricator.memgraph.io/D388
 2017-05-19 16:17:40 +02:00
florijan
97638d3327 Query - grammar changed to support '1 IN [[1, 2]][0]' 
Reviewers: mislav.bradac, teon.banek, buda

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D381
 2017-05-19 09:09:12 +02:00
Mislav Bradac
871b81656b Implement InListOperator 
Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D354
 2017-05-07 17:52:08 +02:00
Mislav Bradac
5ae55499bc Convert escaped labels to AST 
Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D352
 2017-05-06 15:34:02 +02:00
Mislav Bradac
3d026b106d Handle asterisk in AST conversion 
Summary: TODO: Handle COUNT_ASTERISK aggregation in operator (will do in next diff)

Reviewers: teon.banek, florijan, buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D350
 2017-05-05 20:01:56 +02:00
Mislav Bradac
72d4a67c4a Convert labels test from antlr to AST 
Reviewers: florijan, teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D346
 2017-05-05 12:13:55 +02:00
Mislav Bradac
cb7310fb6a Add list indexing and slicing conversion to AST 
Reviewers: teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D341
 2017-05-03 19:40:34 +02:00
Teon Banek
eef6fb1981 Convert antlr Unwind to AST 
Reviewers: florijan, mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D330
 2017-05-03 12:32:18 +02:00
florijan
2e5eccf197 Query::AST::Literal refactor. Repl and TypedValue mods. 
Summary:
- Query::AST::Literal refactor (LiteralBase introduced, ListLiteral added)
- Repl now prints out list TypedValues properly
- TypedValue to string conversion refactors

Reviewers: teon.banek, mislav.bradac, buda

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D327
 2017-04-28 14:58:16 +02:00
Teon Banek
8b8aee9b38 Add optional flag to Match clause 
Reviewers: florijan, mislav.bradac

Reviewed By: florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D320
 2017-04-27 11:16:30 +02:00
Mislav Bradac
0fa4555cad Implement opencypher functions 
Summary: Implement opencypher functions

Reviewers: florijan, buda, teon.banek

Reviewed By: buda, teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D299
 2017-04-26 13:27:42 +02:00
Teon Banek
788d4a37d0 Convert antlr merge to AST 
Summary: Convert antlr merge to AST and add Merge node to AST

Reviewers: florijan, mislav.bradac

Reviewed By: florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D315
 2017-04-25 16:04:05 +02:00
Mislav Bradac
fe36835519 Add db_accessor to ExpressionEvaluator 
Summary: Add db_accessor to ExpressionEvaluator

Reviewers: florijan, teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D310
 2017-04-24 14:38:38 +02:00
Mislav Bradac
f86c96e62c Forbid nonaliased expressions in WITH 
Reviewers: teon.banek, florijan

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D309
 2017-04-24 12:58:41 +02:00
Mislav Bradac
e79f091a69 Convert bag and distinct from antlr to AST 
Reviewers: teon.banek, florijan

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D308
 2017-04-21 16:48:13 +02:00
Teon Banek
4ec363c272 Move common members of Return and With to ReturnBody 
Reviewers: florijan, mislav.bradac

Reviewed By: florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D303
 2017-04-20 13:18:56 +02:00
Mislav Bradac
36129cdcae Implement simple function conversion 
Reviewers: buda

Reviewed By: buda

Subscribers: florijan, teon.banek

Differential Revision: https://phabricator.memgraph.io/D264
 2017-04-11 19:14:08 +02:00
Mislav Bradac
dfa6800edd Add aggregation conversion from antlr to ast 
Reviewers: teon.banek

Reviewed By: teon.banek

Differential Revision: https://phabricator.memgraph.io/D260
 2017-04-11 14:55:26 +02:00
Mislav Bradac
d92caf1163 Check clauses ordering 
Reviewers: buda, florijan, teon.banek

Reviewed By: buda, teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D257
 2017-04-11 12:30:17 +02:00
Teon Banek
804d0b09b9 Move typed_value to query top level and namespace it 
Summary:
Upgraded old uses of TypedValue.
Also, implemented operator<< for EdgeAccessor and VertexAccessor.

Reviewers: buda, florijan, mislav.bradac, mferencevic

Reviewed By: florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D251
 2017-04-11 08:50:46 +02:00
Mislav Bradac
b7ee09785b Implement IS NULL and IS NOT NULL 
Reviewers: teon.banek, florijan

Reviewed By: florijan

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D254
 2017-04-10 16:55:58 +02:00
Mislav Bradac
7a58ec5afb Fix bug in parenthesized expression 
Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D249
 2017-04-07 18:33:07 +02:00
Mislav Bradac
a0049c9691 Convert With clause from antlr to high level ast 
Reviewers: teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D230
 2017-04-05 16:22:46 +02:00
Mislav Bradac
6112454b08 Throw exception on trailing text in query 
Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D222
 2017-04-04 18:48:55 +02:00
florijan
5134a94f1c Query::Plan - RemoveLabels added and tested 
Summary:
Query::Plan::RemoveProperty op added and tested

Query::AST:: Remove added to cypher main visitor. Tested. Grammar corrected on missing whitespace in removeItem production

Reviewers: buda, mislav.bradac, teon.banek

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D202
 2017-03-30 08:53:18 +02:00
Dominik Gleich
bd0b81526e Initial version of mvcc_gc. 
Summary:
Tested MVCC garbage collector.
Also refactors graph_db forward declarations of vertex and edge which were causing issues.

Reviewers: mislav.bradac, dtomicevic, florijan, teon.banek, buda

Reviewed By: teon.banek, buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D177
 2017-03-29 12:38:24 +02:00