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Informations about the package gremlin-dsl
PHP Gremlin DSL implementation
Information
As the original repository was discontinued this is the continuing package to work with.
Introduction
Gremlin is a graph traversal language developed by Apache TinkerPop.
Many graph vendors like Neo4j, Azure Cosmos, AWS Neptune and many more supports Gremlin.
This package provides a basic integration of gremlin for php applications.
This version is built from TinkerPop v3.6.1.
Installation
Configuration
This packages provides a static Configuration Class with some configuration options.
| Option | Scope | Type | Default | Description |
|---|---|---|---|---|
| GREMLIN_DSL_REGISTER_GLOBAL_FUNCTIONS | Constant | boolean | false | Globally register short-functions for gremlin. E.g. the global g-function will be available to start the traversal. |
| enableShortFunctions | Configuration | boolean | false | Globally register short-functions for gremlin. E.g. the global g-function will be available to start the traversal. |
| sendClosure | Configuration | Closure | null | Register a global callback for the pseudo send step |
You can either configure it from array:
or set the desired settings directly:
Usage
Just install the package and begin traversing.
Sending the graph traversal string
There is a pseudo send step provided with this package.
You can either globally configure a closure for the send step or provide it with every call.
Instead of a closure you can also provide an instance of SendClosureInterface.
Short functions
Short functions are simplifying the graph traversal generation and usage of predicates.
You've to enable GREMLIN_DSL_REGISTER_GLOBAL_FUNCTIONS,
manually load e.g. resources/predicates.php
or call Configuration::enableShortFunctions() to make short functions available.
With GREMLIN_DSL_REGISTER_GLOBAL_FUNCTIONS constant:
Development
DSL generation
The DSL generation is based on the java base-classes.
To (re)generate the DSL just call make generate that will first generate the JSON methods structure and afterwards the php file generation.
Generate JSON only
Just call make generate-json or mvn -f generator -P glv-json compile
Generate PHP only
To e.g. adjust the php file generation you can either call php generate.php [dsl:generate [<in-file>]] or make generate-php
All versions of gremlin-dsl with dependencies
ext-json Version *