From 7b6016076b6653a7c930b15a94262db16aa93b5a Mon Sep 17 00:00:00 2001
From: Joshua Pinkney <jpink@amazon.com>
Date: Tue, 26 Apr 2022 14:15:56 -0400
Subject: [PATCH] feat(schema): Add the ability to create items using pattern
 properties rather than normal references

---
 generate/property.go                        |  5 +++++
 generate/templates/schema-property.template | 14 +++++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/generate/property.go b/generate/property.go
index e314c096a8..9e039cd8fc 100644
--- a/generate/property.go
+++ b/generate/property.go
@@ -106,6 +106,11 @@ type Property struct {
 	// This will allow a single array to contain multiple item types rather than one type per array instance
 	InclusiveItemTypes []string `json:"InclusiveItemTypes"`
 
+	// InclusiveItemPattern - Indicates if item types should be created with a pattern property rather than
+	// a regular reference. This is useful in cases where you have a List of objects where the key is arbitrary
+	// but the values need to be referenced.
+	InclusiveItemPattern bool `json:"InclusiveItemPattern"`
+
 	// Types - if a property can be different types, they will be listed here
 	PrimitiveTypes     []string `json:"PrimitiveTypes"`
 	PrimitiveItemTypes []string `json:"PrimitiveItemTypes"`
diff --git a/generate/templates/schema-property.template b/generate/templates/schema-property.template
index 2d8efecfc4..428a8bef00 100644
--- a/generate/templates/schema-property.template
+++ b/generate/templates/schema-property.template
@@ -22,10 +22,22 @@
                                 "type": "{{convertToJSONType $primitiveType}}"
                             }{{if (or $.Property.InclusiveItemTypes (call $rc))}},{{end}}
                         {{end}}
-                        {{$length := len .Property.InclusiveItemTypes}}{{$rc := counter $length}}{{range $index, $itemType := .Property.InclusiveItemTypes}}
+                        {{ if .Property.InclusiveItemPattern }}
+                            {{$length := len .Property.InclusiveItemTypes}}{{$rc := counter $length}}{{range $index, $itemType := .Property.InclusiveItemTypes}}
+                            {
+                                "patternProperties": {
+                                    "^[a-zA-Z0-9]+$": {
+                                          "$ref": "#/definitions/{{$.Parent}}.{{$itemType}}"
+                                    }
+                                }{{if call $rc}},{{end}}
+                            }
+                            {{end}}
+                        {{else}}
+                            {{$length := len .Property.InclusiveItemTypes}}{{$rc := counter $length}}{{range $index, $itemType := .Property.InclusiveItemTypes}}
                             {
                                 "$ref": "#/definitions/{{$.Parent}}.{{$itemType}}"
                             }{{if call $rc}},{{end}}
+                            {{end}}
                         {{end}}
                     ]
                 }