Save and restore AtomSpace
contents as well as individual Atoms to a PostgreSQL database.
Implements the PostgresStorageNode specialization of the
Atomese base type
StorageNode.
This is Version 5.1.0
Deprecated -- This repo is a copy of the old Postgres
storage implementation. It works "fine", it passes unit tests. It's
100% compatible with what it always was -- It's just a copy of that old
code. However, years of experience have revealed that the design is
not all that great. A new Postgres backend should be written, based on
the RocksStorageNode, in the
atomspace-rocks git repo.
Some missing features include:
- Frames (multiple nested AtomSpaces)
The build and install of atomspace-pgres follows the same pattern as
other AtomSpace projects.
Postgres is a prerequisite. On Debian/Ubuntu,
apt install postgresql postgresql-client libpq-dev
Then build, install and test:
cd to project dir atomspace-pgres
git checkout master
git pull
rm -r build
mkdir build
cd build
cmake ..
make -j
make -j check
sudo make install
See the examples directory in the main AtomSpace repo,
here
and look for examples that contain the word Storage. There are
half-a-dozen of these.
Old design notes and a performance diary can be found in the source tree.