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bchapuis pushed a commit to branch mbtiles-perf
in repository https://gitbox.apache.org/repos/asf/incubator-baremaps.git

commit c793110fc96dd36da8aa0bcbe5bd011bda23114b
Author: Bertil Chapuis <[email protected]>
AuthorDate: Tue Aug 22 17:18:10 2023 +0200

    Remove batch operation in TileStore
---
 .../baremaps/benchmarks/MBTilesBenchmark.java      | 23 ----------------------
 .../org/apache/baremaps/tilestore/TileStore.java   | 17 ----------------
 .../baremaps/tilestore/mbtiles/MBTilesStore.java   |  1 -
 .../org/apache/baremaps/utils/SqliteUtils.java     |  3 +--
 .../baremaps/workflow/tasks/ExportVectorTiles.java |  2 +-
 5 files changed, 2 insertions(+), 44 deletions(-)

diff --git 
a/baremaps-benchmark/src/main/java/org/apache/baremaps/benchmarks/MBTilesBenchmark.java
 
b/baremaps-benchmark/src/main/java/org/apache/baremaps/benchmarks/MBTilesBenchmark.java
index 8d170729..18435fb3 100644
--- 
a/baremaps-benchmark/src/main/java/org/apache/baremaps/benchmarks/MBTilesBenchmark.java
+++ 
b/baremaps-benchmark/src/main/java/org/apache/baremaps/benchmarks/MBTilesBenchmark.java
@@ -18,7 +18,6 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.security.SecureRandom;
-import java.util.ArrayList;
 import java.util.concurrent.TimeUnit;
 import org.apache.baremaps.tilestore.TileCoord;
 import org.apache.baremaps.tilestore.TileStoreException;
@@ -66,28 +65,6 @@ public class MBTilesBenchmark {
     }
   }
 
-  @Benchmark
-  @BenchmarkMode(Mode.SingleShotTime)
-  public void writeMBTilesBatch(MBTilesBenchmark benchmark) throws 
TileStoreException {
-    var coords = new ArrayList<TileCoord>();
-    var buffers = new ArrayList<ByteBuffer>();
-    for (int i = 0; i < benchmark.iterations; i++) {
-      var bytes = new byte[1 << 16];
-      random.nextBytes(bytes);
-      coords.add(new TileCoord(0, 0, i));
-      buffers.add(ByteBuffer.wrap(bytes));
-      if (coords.size() == 100) {
-        random.nextBytes(bytes);
-        mbTilesStore.write(coords, buffers);
-        coords.clear();
-        buffers.clear();
-      }
-    }
-    mbTilesStore.write(coords, buffers);
-    coords.clear();
-    buffers.clear();
-  }
-
   public static void main(String[] args) throws RunnerException {
     Options opt =
         new 
OptionsBuilder().include(MBTilesBenchmark.class.getSimpleName()).forks(1).build();
diff --git 
a/baremaps-core/src/main/java/org/apache/baremaps/tilestore/TileStore.java 
b/baremaps-core/src/main/java/org/apache/baremaps/tilestore/TileStore.java
index 44681044..c7288383 100644
--- a/baremaps-core/src/main/java/org/apache/baremaps/tilestore/TileStore.java
+++ b/baremaps-core/src/main/java/org/apache/baremaps/tilestore/TileStore.java
@@ -15,8 +15,6 @@ package org.apache.baremaps.tilestore;
 
 
 import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.List;
 
 /** Represents a store for tiles. */
 public interface TileStore {
@@ -30,21 +28,6 @@ public interface TileStore {
    */
   ByteBuffer read(TileCoord tileCoord) throws TileStoreException;
 
-  /**
-   * Reads the content of several tiles.
-   *
-   * @param tileCoords the tile coordinates
-   * @return the content of the tiles
-   * @throws TileStoreException
-   */
-  default List<ByteBuffer> read(List<TileCoord> tileCoords) throws 
TileStoreException {
-    var blobs = new ArrayList<ByteBuffer>(tileCoords.size());
-    for (var tileCoord : tileCoords) {
-      blobs.add(read(tileCoord));
-    }
-    return blobs;
-  }
-
   /**
    * Writes the content of a tile.
    *
diff --git 
a/baremaps-core/src/main/java/org/apache/baremaps/tilestore/mbtiles/MBTilesStore.java
 
b/baremaps-core/src/main/java/org/apache/baremaps/tilestore/mbtiles/MBTilesStore.java
index 7e211dbf..a5cb03e0 100644
--- 
a/baremaps-core/src/main/java/org/apache/baremaps/tilestore/mbtiles/MBTilesStore.java
+++ 
b/baremaps-core/src/main/java/org/apache/baremaps/tilestore/mbtiles/MBTilesStore.java
@@ -22,7 +22,6 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 import javax.sql.DataSource;
 import org.apache.baremaps.tilestore.TileCoord;
diff --git 
a/baremaps-core/src/main/java/org/apache/baremaps/utils/SqliteUtils.java 
b/baremaps-core/src/main/java/org/apache/baremaps/utils/SqliteUtils.java
index 468cb95a..d2403146 100644
--- a/baremaps-core/src/main/java/org/apache/baremaps/utils/SqliteUtils.java
+++ b/baremaps-core/src/main/java/org/apache/baremaps/utils/SqliteUtils.java
@@ -25,6 +25,7 @@ import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.SQLException;
 import java.sql.Statement;
+import javax.sql.DataSource;
 import org.sqlite.SQLiteConfig;
 import org.sqlite.SQLiteConfig.JournalMode;
 import org.sqlite.SQLiteConfig.LockingMode;
@@ -32,8 +33,6 @@ import org.sqlite.SQLiteConfig.SynchronousMode;
 import org.sqlite.SQLiteConfig.TempStore;
 import org.sqlite.SQLiteDataSource;
 
-import javax.sql.DataSource;
-
 /** A helper class for creating executing sql scripts onto a SQLite database */
 public final class SqliteUtils {
 
diff --git 
a/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java
 
b/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java
index ab2c3684..8b5f5a84 100644
--- 
a/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java
+++ 
b/baremaps-core/src/main/java/org/apache/baremaps/workflow/tasks/ExportVectorTiles.java
@@ -75,7 +75,7 @@ public record ExportVectorTiles(
             .peek(new ProgressLogger<>(count, 5000));
 
     StreamUtils.batch(stream, Runtime.getRuntime().availableProcessors() * 2)
-            .forEach(new TileChannel(sourceTileStore, targetTileStore));
+        .forEach(new TileChannel(sourceTileStore, targetTileStore));
   }
 
   private TileStore sourceTileStore(Tileset tileset, DataSource datasource) {

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