Usage

Library

See Documentation for examples and API

Associative, multidirectional, multiparental materialized-path realization.

To understand how to use it for your own purposes - look at migrations and tests.

• Associative links structure base trigger table.
• Column names configuration. You can use your structure, not only id/from_id/to_id with Trigger class options: id_field, to_field, from_field.
• Multiparental. Any count of parent links in your trees, not only one.
• Multidirectional. Not only from => to direction. You can has many trees with many links with many directions with Trigger class options: isAllowSpreadFromCurrent, isAllowSpreadCurrentTo, isAllowSpreadToCurrent, isAllowSpreadCurrentFrom, isAllowSpreadToInCurrent, isAllowSpreadCurrentFromOut, isAllowSpreadFromOutCurrent, isAllowSpreadCurrentToIn. See multidirectional migrations and tests for details.
• Customizable id field type with Trigger class option: id_type.
• PostgreSQL only for now.
• Hasura support, but not required.
• Grouping support. Not only one tree layer for one storage. You can separate multiple tree conditions with Trigger class options: iteratorInsertDeclare, iteratorInsertBegin, iteratorInsertEnd, iteratorDeleteArgumentSend, iteratorDeleteArgumentGet, iteratorDeleteDeclare, iteratorDeleteBegin, iteratorDeleteEnd, groupInsert, groupDelete, additionalFields, additionalData.
• Benchmarks.

example

Install and run docker and npm. And then in this repo directory:

npm ci;
npm run hasura;
npm run migrate;
npm run test;
npm run unmigrate;
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