Teon Banek f0422c0e11 Generate multiple plans depending on starting node
Summary:
Permute query parts.

Permute matching only by selecting the starting node.

Flip the expansion when expanding from the other node.

Split planner into rule_based_planner and variable_start_planner

Use symbol hash when collecting expansion nodes

Multiple node atoms may point to the same symbol, and we could generate
multiple starting positions per atom which are the same. Using symbol
hash and equality prevents generating those redundant plans.

Correctly permute optional and merge matchings

Test VariableStartPlanner

Reviewers: florijan, mislav.bradac, buda, lion

Reviewed By: florijan, buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D417
2017-06-01 16:38:21 +02:00
2017-05-31 10:31:12 +02:00
2017-03-03 13:33:45 +01:00
2017-05-31 10:31:12 +02:00
2016-12-20 15:49:52 +01:00

memgraph

Memgraph is an ACID compliant high performance transactional distributed in-memory graph database featuring runtime native query compiling, lock free data structures, multi-version concurrency control and asynchronous IO.

dependencies

Memgraph can be compiled using any modern c++ compiler. It mostly relies on the standard template library, however, some things do require external libraries.

Some code contains linux-specific libraries and the build is only supported on a 64 bit linux kernel.

  • linux
  • clang 3.8 (good c++11 support, especially lock free atomics)
  • antlr (compiler frontend)
  • cppitertools
  • fmt format
  • google benchmark
  • google test
  • yaml-cpp
Description
Open-source graph database, built for real-time streaming data, compatible with Neo4j.
Readme 62 MiB
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