fix: featureType as enum instead String

server/schema/chromosome.js

@@ -42,6 +42,6 @@ type Chromosome implements Sequence @node(labels: ["Sequence", "Chromosome"]) {
   features: [Sequence!]! @relationship(type: "HAS_FEATURE", direction: OUT, properties: "HasFeature")
 
   "The type of feature"
-  featureType: String!
+  featureType: FeatureType!
 }
 `
\ No newline at end of file

server/schema/feature.js

@@ -19,6 +19,20 @@ enum Strand {
   NOT_STRANDED
 }
 
+enum FeatureType {
+  "A chromosome"
+  Chromosome
+
+  "A Generic Feature Sequence"
+  FeatureSequence
+
+  "A Guide"
+  Guide
+
+  "A Target"
+  Target
+}
+
 """
 Strand description possibility, like in gff3 format description
 https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md

server/schema/feature_sequence.js

@@ -42,7 +42,7 @@ type FeatureSequence implements Sequence @node(labels: ["Sequence", "FeatureSequ
   features: [Sequence!]! @relationship(type: "HAS_FEATURE", direction: OUT, properties: "HasFeature")
 
   "The type of feature"
-  featureType: String!
+  featureType: FeatureType!
 
   "The parent sequence if any"
   parent: Sequence @relationship(type: "HAS_FEATURE", direction: IN, properties: "HasFeature")

server/schema/guide.js

@@ -45,7 +45,7 @@ type Guide implements Sequence @node(labels: ["Sequence", "Guide"]) {
   features: [Sequence!]! @relationship(type: "HAS_FEATURE", direction: OUT, properties: "HasFeature")
 
   "The type of feature"
-  featureType: String!
+  featureType: FeatureType!
 
   "The modifications guided by the guide"
   modifications: [Modification!]! @relationship(type: "GUIDE", direction: OUT)

server/schema/sequence.js

@@ -42,7 +42,7 @@ interface Sequence {
   features: [Sequence!]! @relationship(type: "HAS_FEATURE", direction: OUT, properties: "HasFeature")
 
   "The type of feature"
-  featureType: String!
+  featureType: FeatureType!
 }
 
 """

server/schema/target.js

@@ -45,7 +45,7 @@ type Target implements Sequence @node(labels: ["Sequence", "Target"]) {
   features: [Sequence!]! @relationship(type: "HAS_FEATURE", direction: OUT, properties: "HasFeature")
 
   "The type of feature"
-  featureType: String!
+  featureType: FeatureType!
 
   "The target is a feature from parent"
   parent: Sequence @relationship(type: "HAS_FEATURE", direction: IN, properties: "HasFeature")