From ec588f1fea973914fc9b9321200c3d72bce6f86a Mon Sep 17 00:00:00 2001
From: Juan Lara <juanlara@google.com>
Date: Mon, 1 May 2023 22:49:35 +0000
Subject: [PATCH] sample: get docs from a Firestore subcollection

---
 .../google/example/firestore/DocSnippets.java | 21 +++++++++++++++++++
 .../example/firestore/kotlin/DocSnippets.kt   | 17 +++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java b/firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java
index 37cf8266a..cde32fdc4 100644
--- a/firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java
+++ b/firestore/app/src/main/java/com/google/example/firestore/DocSnippets.java
@@ -762,6 +762,27 @@ public void onComplete(@NonNull Task<QuerySnapshot> task) {
         // [END get_multiple_all]
     }
 
+    public void getAllDocsSubcollection() {
+        // [START firestore_query_subcollection]
+        db.collection("cities")
+                .document("SF")
+                .collection("landmarks")
+                .get()
+                .addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
+                    @Override
+                    public void onComplete(@NonNull Task<QuerySnapshot> task) {
+                        if (task.isSuccessful()) {
+                            for (QueryDocumentSnapshot document : task.getResult()) {
+                                Log.d(TAG, document.getId() + " => " + document.getData());
+                            }
+                        } else {
+                            Log.d(TAG, "Error getting documents: ", task.getException());
+                        }
+                    }
+                });
+        // [END firestore_query_subcollection]
+    }
+    
     public void listenToMultiple() {
         // [START listen_multiple]
         db.collection("cities")
diff --git a/firestore/app/src/main/java/com/google/example/firestore/kotlin/DocSnippets.kt b/firestore/app/src/main/java/com/google/example/firestore/kotlin/DocSnippets.kt
index ff07b4081..8610215e7 100644
--- a/firestore/app/src/main/java/com/google/example/firestore/kotlin/DocSnippets.kt
+++ b/firestore/app/src/main/java/com/google/example/firestore/kotlin/DocSnippets.kt
@@ -594,6 +594,23 @@ abstract class DocSnippets(val db: FirebaseFirestore) {
         // [END get_multiple_all]
     }
 
+    private fun getAllDocsSubcollection() {
+        // [START firestore_query_subcollection]
+        db.collection("cities")
+            .document("SF")
+            .collection("landmarks")
+            .get()
+            .addOnSuccessListener { result ->
+                for (document in result) {
+                    Log.d(TAG, "${document.id} => ${document.data}")
+                }
+            }
+            .addOnFailureListener { exception ->
+                Log.d(TAG, "Error getting documents: ", exception)
+            }
+        // [END firestore_query_subcollection]
+    }
+
     private fun listenToMultiple() {
         // [START listen_multiple]
         db.collection("cities")