Generate plural names for augmented fields and types (#221)

resolves #197

Author: Andy2003

core/pom.xml

@@ -39,6 +39,12 @@
             <artifactId>graphql-java</artifactId>
             <version>15.0</version>
         </dependency>
+        <dependency>
+            <groupId>org.atteo</groupId>
+            <artifactId>evo-inflector</artifactId>
+            <version>1.2.2</version>
+        </dependency>
+
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>

core/src/main/kotlin/org/neo4j/graphql/BuildingEnv.kt

@@ -2,6 +2,7 @@ package org.neo4j.graphql
 
 import graphql.Scalars
 import graphql.schema.*
+import org.atteo.evo.inflector.English
 import org.neo4j.graphql.handler.projection.ProjectionBase
 
 class BuildingEnv(
@@ -144,7 +145,7 @@ class BuildingEnv(
             optionsTypeBuilder.field(GraphQLInputObjectField.newInputObjectField()
                 .name(ProjectionBase.SORT)
                 .type(GraphQLList(GraphQLNonNull(GraphQLTypeReference(sortTypeName))))
-                .description("Specify one or more $sortTypeName objects to sort ${type.name}s by. The sorts will be applied in the order in which they are arranged in the array.")
+                .description("Specify one or more $sortTypeName objects to sort ${English.plural(type.name)} by. The sorts will be applied in the order in which they are arranged in the array.")
                 .build())
         }
         optionsTypeBuilder.field(GraphQLInputObjectField.newInputObjectField()

core/src/main/kotlin/org/neo4j/graphql/SchemaConfig.kt

@@ -9,6 +9,11 @@ data class SchemaConfig @JvmOverloads constructor(
          */
         val capitalizeQueryFields: Boolean = false,
 
+        /**
+         * if true, the generated fields for query or mutation will use the plural of the types name
+         */
+        val pluralizeFields: Boolean = false,
+
         /**
          * Defines the way the input for queries and mutations are generated
          */

core/src/main/kotlin/org/neo4j/graphql/handler/QueryHandler.kt

@@ -3,6 +3,7 @@ package org.neo4j.graphql.handler
 import graphql.Scalars
 import graphql.language.Field
 import graphql.schema.*
+import org.atteo.evo.inflector.English
 import org.neo4j.cypherdsl.core.Cypher.*
 import org.neo4j.cypherdsl.core.Statement
 import org.neo4j.graphql.*
@@ -34,9 +35,13 @@ class QueryHandler private constructor(
                         input(FILTER, GraphQLTypeReference(filterTypeName))
             }
 
+            var fieldName = if (schemaConfig.capitalizeQueryFields) typeName else typeName.decapitalize()
+            if (schemaConfig.pluralizeFields) {
+                fieldName = English.plural(fieldName)
+            }
             val builder = GraphQLFieldDefinition
                 .newFieldDefinition()
-                .name(if (schemaConfig.capitalizeQueryFields) typeName else typeName.decapitalize())
+                .name(fieldName)
                 .arguments(arguments)
                 .type(GraphQLNonNull(GraphQLList(GraphQLNonNull(GraphQLTypeReference(type.name)))))