Support Java 8 🎉

.github/workflows/cd.yml

@@ -11,12 +11,15 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java-version: ["8", "11", "16", "17", "21"]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
-          java-version: "17"
-          distribution: "oracle"
+          java-version: ${{ matrix.java-version }}
+          distribution: "temurin"
       - name: Set execute permission
         run: |
           chmod +x ./tools/mvn_test.sh
@@ -33,7 +36,7 @@ jobs:
         uses: dev-vince/[email protected]
         with:
             GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-            java-version: "17"
+            java-version: "8"
             java-distribution: "adopt" # The distributor of the target JDK. See https://github.com/actions/setup-java for more information.
             project: maven # The project type.
             branch: "gh-pages" # The branch for the javadoc contents.

.github/workflows/test.yml

@@ -11,16 +11,19 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java-version: ["8", "11", "16", "17", "21"]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
-          java-version: "17"
-          distribution: "oracle"
+          java-version: ${{ matrix.java-version }}
+          distribution: "temurin"
       - name: Set execute permission
         run: |
           chmod +x ./tools/mvn_test.sh
       - name: Maven tests
         run: |
           ./tools/mvn_test.sh
-        shell: bash
+        shell: bash

README.md

@@ -25,7 +25,11 @@ Java client library with handy utility methods and overloads for interfacing wit
 
 > Not yet published.
 
-To install the library, add the following lines to your build config file. Requires JDK 17 or above.
+> [!IMPORTANT]  
+> Requires Java 8 or above.
+
+To install the library, add the following lines to your build config file.
+
 #### Maven
 ```xml
 <dependency>
@@ -98,6 +102,7 @@ time: 7.04541E-4
 The library offers handy utility methods for constructing GRPC structures.
 
 ```java
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -118,12 +123,13 @@ PointStruct point =
     0,
     VectorUtil.toVector(0.0f, 0.1f, 0.2f, 0.3f, 0.4f, 0.5f),
     PayloadUtil.toPayload(map));
-List<PointStruct> points = List.of(point);
+List<PointStruct> points = Arrays.asList;
 client.upsertPoints(collectionName, points, null);
 ```
 
 #### Performing a search on the vectors with filtering
 ```java
+import io.qdrant.client.grpc.Points.Filter;
 import io.qdrant.client.grpc.Points.SearchPoints;
 import io.qdrant.client.grpc.Points.SearchResponse;
 
@@ -133,41 +139,22 @@ Filter filter = FilterUtil.must(FilterUtil.fieldCondition("age", FilterUtil.matc
 
 SearchPoints request = SearchPoints.newBuilder()
         .setCollectionName(collectionName)
-        .addAllVector(List.of(0.0f, 0.1f, 0.2f, 0.3f, 0.4f, 0.5f))
+        .addAllVector(Arrays.asList(0.0f, 0.1f, 0.2f, 0.3f, 0.4f, 0.5f))
         .setFilter(filter)
         .setWithPayload(SelectorUtil.withPayload())
         .setLimit(10)
         .build();
 SearchResponse result = client.searchPoints(request);
-System.out.println(result);
+
+ScoredPoint result = results.getResult(0);
+
+System.out.println("Similarity: " + result.getScore());
+System.out.println("Payload: " + PayloadUtil.toMap(result.getPayload()));
 ```
 *Output*:
 ```
-result {
-id {
-num: 0
-}
-payload {
-key: "age"
-value {
-integer_value: 42
-}
-}
-payload {
-key: "married"
-value {
-bool_value: true
-}
-}
-payload {
-key: "name"
-value {
-string_value: "John Doe"
-}
-}
-score: 0.9999999
-}
-time: 4.63542E-4
+Similarity: 0.9999999
+Payload: {name=John Doe, married=true, age=42}
 ```
 
 </details>

pom.xml

@@ -88,20 +88,12 @@
                 <artifactId>maven-javadoc-plugin</artifactId>
                 <version>3.6.2</version>
             </plugin>
-            <plugin>
-                <groupId>com.spotify.fmt</groupId>
-                <artifactId>fmt-maven-plugin</artifactId>
-                <version>2.21.1</version>
-                <goals>
-                    <goal>format</goal>
-                </goals>
-            </plugin>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.11.0</version>
                 <configuration>
-                    <source>17</source>
-                    <target>17</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                 </configuration>
             </plugin>
             <plugin>

src/main/java/io/qdrant/client/TokenInterceptor.java

@@ -26,7 +26,7 @@ final class TokenInterceptor implements ClientInterceptor {
   @Override
   public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(
       MethodDescriptor<ReqT, RespT> method, CallOptions callOptions, Channel next) {
-    return new SimpleForwardingClientCall<>(next.newCall(method, callOptions)) {
+    return new SimpleForwardingClientCall<ReqT, RespT>(next.newCall(method, callOptions)) {
       @Override
       public void start(Listener<RespT> responseListener, Metadata headers) {
         headers.put(API_KEY, apiKey);

src/main/java/io/qdrant/client/utils/PointUtil.java

@@ -16,6 +16,8 @@
 import java.util.Arrays;
 import java.util.Map;
 import java.util.UUID;
+import java.util.stream.Collector;
+import java.util.stream.Collectors;
 
 /** Utility class for working with Points. */
 public class PointUtil {
@@ -30,7 +32,7 @@ public static PointsSelector createPointsSelector(long... pointIds) {
 
     PointsIdsList pointsIdsList =
         PointsIdsList.newBuilder()
-            .addAllIds(Arrays.stream(pointIds).mapToObj(PointUtil::pointId).toList())
+            .addAllIds(Arrays.stream(pointIds).mapToObj(PointUtil::pointId).collect(Collectors.toList()))
             .build();
 
     return PointsSelector.newBuilder().setPoints(pointsIdsList).build();
@@ -51,7 +53,7 @@ public static PointsSelector createPointsSelector(String... pointIds) {
     // Using map() instead
     PointsIdsList pointsIdsList =
         PointsIdsList.newBuilder()
-            .addAllIds(Arrays.stream(pointIds).map((String id) -> PointUtil.pointId(id)).toList())
+            .addAllIds(Arrays.stream(pointIds).map((String id) -> PointUtil.pointId(id)).collect(Collectors.toList()))
             .build();
 
     return PointsSelector.newBuilder().setPoints(pointsIdsList).build();

src/main/java/io/qdrant/client/utils/SelectorUtil.java

@@ -8,6 +8,8 @@
 import io.qdrant.client.grpc.Points.VectorsSelector;
 import io.qdrant.client.grpc.Points.WithPayloadSelector;
 import io.qdrant.client.grpc.Points.WithVectorsSelector;
+
+import java.util.Arrays;
 import java.util.List;
 
 /** Utility class for working with Selectors. */
@@ -39,7 +41,7 @@ public static WithVectorsSelector withVectors() {
    */
   public static WithPayloadSelector withPayload(String... fields) {
     PayloadIncludeSelector include =
-        PayloadIncludeSelector.newBuilder().addAllFields(List.of(fields)).build();
+        PayloadIncludeSelector.newBuilder().addAllFields(Arrays.asList(fields)).build();
     return WithPayloadSelector.newBuilder().setInclude(include).build();
   }
 
@@ -50,7 +52,7 @@ public static WithPayloadSelector withPayload(String... fields) {
    * @return The created {@link WithVectorsSelector} object.
    */
   public static WithVectorsSelector withVectors(String... vectors) {
-    VectorsSelector include = VectorsSelector.newBuilder().addAllNames(List.of(vectors)).build();
+    VectorsSelector include = VectorsSelector.newBuilder().addAllNames(Arrays.asList(vectors)).build();
     return WithVectorsSelector.newBuilder().setInclude(include).build();
   }
 
@@ -74,7 +76,7 @@ public static PointsSelector idsSelector(List<PointId> ids) {
    */
   public static PointsSelector idsSelector(PointId... ids) {
     return PointsSelector.newBuilder()
-        .setPoints(PointsIdsList.newBuilder().addAllIds(List.of(ids)).build())
+        .setPoints(PointsIdsList.newBuilder().addAllIds(Arrays.asList(ids)).build())
         .build();
   }
 

src/test/java/io/qdrant/client/QdrantClientPointsTest.java

@@ -17,6 +17,7 @@
 import io.qdrant.client.utils.SelectorUtil;
 import io.qdrant.client.utils.VectorUtil;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -58,7 +59,7 @@ void testPointsWithPayloadFilters() {
     Points.GetResponse response =
         qdrantClient.getPoints(
             collectionName,
-            List.of(pointIds),
+            Arrays.asList(pointIds),
             SelectorUtil.withVectors(),
             SelectorUtil.withPayload(),
             null);
@@ -79,12 +80,12 @@ void testPointsWithPayloadFilters() {
         PointUtil.point(
             pointID, VectorUtil.dummyVector(EMBEDDINGS_SIZE), PayloadUtil.toPayload(data));
 
-    List<PointStruct> points = List.of(point);
+    List<PointStruct> points = Arrays.asList(point);
     qdrantClient.upsertPointsBlocking(collectionName, points, null);
     response =
         qdrantClient.getPoints(
             collectionName,
-            List.of(pointIds),
+            Arrays.asList(pointIds),
             SelectorUtil.withVectors(),
             SelectorUtil.withPayload(),
             null);
@@ -101,7 +102,7 @@ void testPointsWithPayloadFilters() {
     response =
         qdrantClient.getPoints(
             collectionName,
-            List.of(pointIds),
+            Arrays.asList(pointIds),
             SelectorUtil.withVectors(),
             SelectorUtil.withPayload(),
             null);
@@ -122,20 +123,20 @@ void testUpsertPoints() {
     Points.GetResponse response =
         qdrantClient.getPoints(
             collectionName,
-            List.of(pointIds),
+            Arrays.asList(pointIds),
             SelectorUtil.withVectors(),
             SelectorUtil.withPayload(),
             null);
 
     assertEquals(0, response.getResultCount());
 
     PointStruct point = PointUtil.point(pointID, VectorUtil.dummyVector(EMBEDDINGS_SIZE), null);
-    List<PointStruct> points = List.of(point);
+    List<PointStruct> points = Arrays.asList(point);
     qdrantClient.upsertPointsBlocking(collectionName, points, null);
     response =
         qdrantClient.getPoints(
             collectionName,
-            List.of(pointIds),
+            Arrays.asList(pointIds),
             SelectorUtil.withVectors(),
             SelectorUtil.withPayload(),
             null);
@@ -146,7 +147,7 @@ void testUpsertPoints() {
     response =
         qdrantClient.getPoints(
             collectionName,
-            List.of(pointIds),
+            Arrays.asList(pointIds),
             SelectorUtil.withVectors(),
             SelectorUtil.withPayload(),
             null);