Pho-Compiler

Compiles GraphQL schema into PHP executables for use throughout Phở stack.

Getting Started

Please note, this repository uses submodules, for unit tests. The recommended way to install pho-compiler is through composer.

git clone https://github.com/phonetworks/pho-compiler
git submodule init
git submodule update
composer install

Schema

Recommendations

A Phở-compatible GraphQL schema (also called a "PhoGQL" file) is advised to end with the following file extension: .pgql

GraphQL

• PhởGQL is built on top of GraphQL. For more information on GraphQL specs, please visit http://facebook.github.io/graphql/.
• A PhoGQL file may include multiple entity definitions. However, it is advised to use (a) a single definition per file or (b) only a single semantically linked group of node and edge definitions per file.

Versioning

• PhởGQL files must start with a version declaration. For version 1, the one and only version supported so far, it is # pho-graphql-schema-v1
• This declaration must be at the very top of the file and must not be preceded by any other word or character.
• The following regular expression pattern is used to match the version: /^#( )*pho\-graphql\-v1(\r\n|\r|\n| )+/i
• All future versions and their patterns will be placed in the file Types.php

Types

• A PhởGQL definition must implement one of ActorNode, GraphNode, ObjectNode or ReadEdge, SubscribeEdge, TransmitEdge, WriteEdge entities. For more information on these entities, check out pho-framework.
• While GraphQL allows multiple inheritance, the Phở compiler will evaluate only the first interface declared in each definition.

Directives

• Directives are case-insensitive. Similarly arguments are case-insensitive too.

Tips

1. Start by defining the Actor edge
2. Outgoing edges are important.
3. Make sure all outgoing edges are done.