From 05e6de5e69f93792b6ff77df382f668d0dfcda29 Mon Sep 17 00:00:00 2001
From: Armin <armin.schnabel@cyface.de>
Date: Tue, 9 Nov 2021 11:13:24 +0100
Subject: [PATCH 1/2] [DAT-820] Store sensor points in batches (#10)

---
 .../de/cyface/protos/model/measurement.proto  | 30 +++++++++++--------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/src/main/proto/de/cyface/protos/model/measurement.proto b/src/main/proto/de/cyface/protos/model/measurement.proto
index 4c373ef..28e422f 100644
--- a/src/main/proto/de/cyface/protos/model/measurement.proto
+++ b/src/main/proto/de/cyface/protos/model/measurement.proto
@@ -57,23 +57,23 @@ message Measurement {
    */
   LocationRecords location_records = 17;
   /*
-   * Collection of acceleration points.
+   * Collection of acceleration point batches.
    *
-   * We use a packed encoding here, so this is a non repeated field.
+   * The sensor points are stored in batches to simplify the client code.
    */
-  Accelerations accelerations = 18;
+  repeated Accelerations accelerations = 18;
   /*
-   * Collection of rotation points.
+   * Collection of rotation point batches.
    *
-   * We use a packed encoding here, so this is a non repeated field.
+   * The sensor points are stored in batches to simplify the client code.
    */
-  Rotations rotations = 19;
+  repeated Rotations rotations = 19;
   /*
-   * Collection of direction points.
+   * Collection of direction point batches.
    *
-   * We use a packed encoding here, so this is a non repeated field.
+   * The sensor points are stored in batches to simplify the client code.
    */
-  Directions directions = 20;
+  repeated Directions directions = 20;
 
   /*
    * Collection of events.
@@ -279,11 +279,13 @@ message LocationRecords {
 }
 
 /*
- * A message type which wraps all acceleration points captured for one measurement.
+ * A message type which wraps a batch of acceleration points captured for one measurement.
  *
  * Each field contains the ordered list of that attribute for all points.
  * I.e. field1[4] and field2[4] belong to the same point.
  *
+ * The first point is stored as absolute number, subsequent points in the offset-format to reduce the byte size.
+ *
  * Reference phone, Pixel 3a, contains this sensor: https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi160/
  * - Bosch recommends the following sensor: https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi270/
  * - the sensitivity and value ranges are the same [DAT-646]
@@ -345,11 +347,13 @@ message Accelerations {
 }
 
 /*
- * A message type which wraps all rotation points captured for one measurement.
+ * A message type which wraps a batch of rotation points captured for one measurement.
  *
  * Each field contains the ordered list of that attribute for all points.
  * I.e. field1[4] and field2[4] belong to the same point.
  *
+ * The first point is stored as absolute number, subsequent points in the offset-format to reduce the byte size.
+ *
  * Reference phone, Pixel 3a, contains this sensor: https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi160/
  * - Bosch recommends the following sensor: https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi270/
  * - the sensitivity and value ranges are the same [DAT-646]
@@ -412,11 +416,13 @@ message Rotations {
 }
 
 /*
- * A message type which wraps all direction points captured for one measurement.
+ * A message type which wraps a batch of direction points captured for one measurement.
  *
  * Each field contains the ordered list of that attribute for all points.
  * I.e. field1[4] and field2[4] belong to the same point.
  *
+ * The first point is stored as absolute number, subsequent points in the offset-format to reduce the byte size.
+ *
  * Reference phone, Pixel 3a, contains this sensor: akm, AK0991X Magnetometer, Version 20012 (no good data sheet found)
  * - Another phones use https://www.digikey.de/catalog/en/partgroup/ak09915/65408, with 1/16 resolution (same as e.g. Tinkerforge)
  * - the sensitivity is 0.15 µT. (e.g. Tinkerforge IMU uses 1/16 µT = 0.0625 µT)

From af8b2796c46c8eb204bd30116d3ea11bce57f7b9 Mon Sep 17 00:00:00 2001
From: Armin <armin.schnabel@cyface.de>
Date: Tue, 9 Nov 2021 11:14:40 +0100
Subject: [PATCH 2/2] Set version to 0.1.0

---
 build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.gradle b/build.gradle
index 3c85a23..8d4a520 100644
--- a/build.gradle
+++ b/build.gradle
@@ -40,7 +40,7 @@ plugins {
 }
 
 group = 'de.cyface'
-version = '0.0.3'
+version = '0.1.0'
 
 tasks.withType(JavaCompile) {
   options.encoding = 'UTF-8'