Add version to the schema

.travis.yml

@@ -1,10 +1,10 @@
 sudo: false
 language: ruby
-before_install: gem install bundler -v 1.14.3
+before_install: gem install bundler -v 2.1.2
 rvm:
   - 2.3.3
 jdk:
-  - oraclejdk8
+  - oraclejdk9
 
 # https://docs.travis-ci.com/user/languages/java/#Caching
 # recommends adding this for the gradle cache

README.md

@@ -44,6 +44,7 @@ schema = GraphQLSchema.new(JSON.parse(introspection_result))
 GraphQLJavaGen.new(schema,
   package_name: "com.example.MyApp",
   nest_under: 'ExampleSchema',
+  version: '2020-01',
   custom_scalars: [
     GraphQLJavaGen::Scalar.new(
       type_name: 'Decimal',
@@ -76,6 +77,7 @@ schema = GraphQLSchema.new(JSON.parse(introspection_result))
 GraphQLJavaGen.new(schema,
   package_name: "com.example.MyApp",
   nest_under: 'ExampleSchema',
+  version: '2020-01',
   custom_scalars: [
     GraphQLJavaGen::Scalar.new(
       type_name: 'Decimal',

Rakefile

@@ -18,6 +18,7 @@ task :generate do
     GraphQLSchema.new(Support::Schema.introspection_result),
     package_name: 'com.shopify.graphql.support',
     nest_under: 'Generated',
+    version: '2020-01',
     custom_scalars: [
       GraphQLJavaGen::Scalar.new(
         type_name: 'Time',
@@ -38,6 +39,7 @@ task :generate do
     GraphQLSchema.new(Support::Schema.introspection_result(Support::Schema::MinimalSchema)),
     package_name: 'com.shopify.graphql.support',
     nest_under: 'GeneratedMinimal',
+    version: '2020-01'
   ).save('support/src/test/java/com/shopify/graphql/support/GeneratedMinimal.java')
 end
 

codegen/lib/graphql_java_gen.rb

@@ -7,11 +7,11 @@
 require 'set'
 
 class GraphQLJavaGen
-  attr_reader :schema, :package_name, :scalars, :imports, :script_name, :schema_name, :include_deprecated
+  attr_reader :schema, :package_name, :scalars, :imports, :script_name, :schema_name, :include_deprecated, :version
 
   def initialize(schema,
     package_name:, nest_under:, script_name: 'graphql_java_gen gem',
-    custom_scalars: [], custom_annotations: [], include_deprecated: false
+    custom_scalars: [], custom_annotations: [], include_deprecated: false, version: ''
   )
     @schema = schema
     @schema_name = nest_under
@@ -22,13 +22,15 @@ def initialize(schema,
     @annotations = custom_annotations
     @imports = (@scalars.values.map(&:imports) + @annotations.map(&:imports)).flatten.sort.uniq
     @include_deprecated = include_deprecated
+    @version = version
   end
 
   def save(path)
     File.write(path, generate)
   end
 
   def save_granular(path)
+    write_schema(path)
     write_static_methods(path)
     write_response(path, :query, schema.query_root_name)
     write_response(path, :mutation, schema.mutation_root_name)
@@ -66,6 +68,10 @@ def generate_entity(template, type)
     reformat(erb_template.result(binding))
   end
 
+  def write_schema(path)
+    File.write(path + "/Schema.java", reformat(erb_for_entity("Schema.java").result(binding)))
+  end
+
   def write_static_methods(path)
     File.write(path + "/Operations.java", reformat(erb_for_entity("Operations.java").result(binding)))
   end

codegen/lib/graphql_java_gen/templates/APISchema.java.erb

@@ -23,6 +23,8 @@ import java.util.List;
 import java.util.Map;
 
 public class <%= schema_name %> {
+    public static final String API_VERSION = "<%= version %>";
+
     <% [[:query, schema.query_root_name], [:mutation, schema.mutation_root_name]].each do |operation_type, root_name| %>
         <% next unless root_name %>
         public static <%= root_name %>Query <%= operation_type %>(<%= root_name %>QueryDefinition queryDef) {

codegen/lib/graphql_java_gen/templates/Schema.java.erb

@@ -0,0 +1,7 @@
+// Generated from <%= script_name %>
+
+package <%= package_name %>;
+
+public class Schema {
+    public static String VERSION = "<%= version %>";
+}

codegen/test/graphql_java_gen_test.rb

@@ -6,17 +6,17 @@ def test_that_it_has_a_version_number
   end
 
   def test_default_script_name
-    output = GraphQLJavaGen.new(MINIMAL_SCHEMA, **required_args).generate
+    output = GraphQLJavaGen.new(MINIMAL_SCHEMA, version: '2020-01', **required_args).generate
     assert_match %r{\A// Generated from graphql_java_gen gem$}, output
   end
 
   def test_script_name_option
-    output = GraphQLJavaGen.new(MINIMAL_SCHEMA, script_name: 'script/update_schema', **required_args).generate
+    output = GraphQLJavaGen.new(MINIMAL_SCHEMA, script_name: 'script/update_schema', version: '2020-01', **required_args).generate
     assert_match %r{\A// Generated from script/update_schema$}, output
   end
 
   def test_generate
-    refute_empty GraphQLJavaGen.new(LARGER_SCHEMA, **required_args).generate
+    refute_empty GraphQLJavaGen.new(LARGER_SCHEMA, version: '2020-01', **required_args).generate
   end
 
   private

graphql_java_gen.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "graphql_schema", "~> 0.1.1"
 
-  spec.add_development_dependency "bundler", "~> 1.14"
+  spec.add_development_dependency "bundler", "~> 2.1"
   spec.add_development_dependency "rake", "~> 12.0"
   spec.add_development_dependency "minitest", "~> 5.10"
   spec.add_development_dependency "graphql", "~> 1.3"

support/src/test/java/com/shopify/graphql/support/Generated.java

@@ -26,6 +26,8 @@
 import java.util.Map;
 
 public class Generated {
+    public static final String API_VERSION = "2020-01";
+
     public static QueryRootQuery query(QueryRootQueryDefinition queryDef) {
         StringBuilder queryString = new StringBuilder("{");
         QueryRootQuery query = new QueryRootQuery(queryString);

support/src/test/java/com/shopify/graphql/support/GeneratedMinimal.java

@@ -22,6 +22,8 @@
 import java.util.Map;
 
 public class GeneratedMinimal {
+    public static final String API_VERSION = "2020-01";
+
     public static QueryRootQuery query(QueryRootQueryDefinition queryDef) {
         StringBuilder queryString = new StringBuilder("{");
         QueryRootQuery query = new QueryRootQuery(queryString);