apply changes of #470 to oshdb-database-driver

new Dependency hikaricp

Author: joker234

oshdb-helpers/oshdb-database-driver/pom.xml

@@ -13,6 +13,7 @@
   <description>TODO</description>
 
   <properties>
+    <hikaricp.version>5.0.1</hikaricp.version>
   </properties>
 
   <dependencies>
@@ -22,6 +23,12 @@
       <version>${project.version}</version>
       <scope>compile</scope>
     </dependency>
+    <!-- hikari database connection pool -->
+    <dependency>
+      <groupId>com.zaxxer</groupId>
+      <artifactId>HikariCP</artifactId>
+      <version>${hikaricp.version}</version>
+    </dependency>
   </dependencies>
 
 </project>

oshdb-helpers/oshdb-database-driver/src/main/java/org/heigit/ohsome/oshdb/helpers/db/OSHDBConnection.java

@@ -2,7 +2,6 @@
 
 import java.util.Properties;
 import org.heigit.ohsome.oshdb.api.db.OSHDBDatabase;
-import org.heigit.ohsome.oshdb.api.db.OSHDBJdbc;
 import org.heigit.ohsome.oshdb.api.mapreducer.MapReducer;
 import org.heigit.ohsome.oshdb.api.mapreducer.OSMContributionView;
 import org.heigit.ohsome.oshdb.api.mapreducer.OSMEntitySnapshotView;
@@ -15,23 +14,21 @@ public class OSHDBConnection {
 
   private final Properties props;
   private final OSHDBDatabase oshdb;
-  private final OSHDBJdbc keytables;
   private final TagTranslator tagTranslator;
 
-  public OSHDBConnection(Properties props, OSHDBDatabase oshdb, OSHDBJdbc keytables)
+  public OSHDBConnection(Properties props, OSHDBDatabase oshdb)
       throws OSHDBKeytablesNotFoundException {
     this.props = props;
     this.oshdb = oshdb;
-    this.keytables = keytables;
-    this.tagTranslator = new TagTranslator(keytables.getConnection());
+    this.tagTranslator = oshdb.getTagTranslator();
   }
 
   public MapReducer<OSMContribution> getContributionView() {
-    return OSMContributionView.on(oshdb).keytables(keytables);
+    return OSMContributionView.on(oshdb);
   }
 
   public MapReducer<OSMEntitySnapshot> getSnapshotView() {
-    return OSMEntitySnapshotView.on(oshdb).keytables(keytables);
+    return OSMEntitySnapshotView.on(oshdb);
   }
 
   public Properties getProps() {
@@ -42,10 +39,6 @@ public OSHDBDatabase getOSHDB() {
     return oshdb;
   }
 
-  public OSHDBJdbc getKeytables() {
-    return keytables;
-  }
-
   public TagTranslator getTagTranslator() {
     return tagTranslator;
   }

oshdb-helpers/oshdb-database-driver/src/main/java/org/heigit/ohsome/oshdb/helpers/db/OSHDBDriver.java

@@ -2,13 +2,12 @@
 
 import static org.heigit.ohsome.oshdb.helpers.db.Util.getInterpolated;
 
-import java.sql.DriverManager;
+import com.zaxxer.hikari.HikariDataSource;
 import java.util.Properties;
 import org.apache.ignite.Ignite;
 import org.apache.ignite.Ignition;
 import org.heigit.ohsome.oshdb.api.db.OSHDBH2;
 import org.heigit.ohsome.oshdb.api.db.OSHDBIgnite;
-import org.heigit.ohsome.oshdb.api.db.OSHDBJdbc;
 
 /**
  * A basic OSHDBDriver class for connecting to h2 or ignite oshdb instances.
@@ -87,14 +86,13 @@ private static int connectToH2(Properties props, Execute connect)
   @SuppressWarnings("java:S112")
   private static int connectToH2(String h2, String prefix, boolean multithreading,
       Execute connect) throws Exception {
-    try (final var oshdb = new OSHDBH2(h2);
-        final var keyTables = new OSHDBJdbc(oshdb.getConnection())) {
+    try (final var oshdb = new OSHDBH2(h2)) {
       oshdb.prefix(prefix);
       oshdb.multithreading(multithreading);
       var props = new Properties();
       props.setProperty(OSHDBDriver.OSHDB_PROPERTY_NAME, h2);
       props.setProperty(PREFIX_PROPERTY_NAME, prefix);
-      final var connection = new OSHDBConnection(props, oshdb, keyTables);
+      final var connection = new OSHDBConnection(props, oshdb);
       return connect.apply(connection);
     }
   }
@@ -107,17 +105,19 @@ private static int connectToIgnite(Properties props, Execute connect)
         .filter(value -> value.toLowerCase().startsWith(IGNITE_URI_PREFIX))
         .map(value -> value.substring(IGNITE_URI_PREFIX.length()))
         .orElseThrow();
+    // start ignite
     try (var ignite = Ignition.start(cfg)) {
       var prefix = getInterpolated(props, PREFIX_PROPERTY_NAME).orElseGet(() -> getActive(ignite));
       props.put(PREFIX_PROPERTY_NAME, prefix);
       var keyTablesUrl = getInterpolated(props, OSHDBDriver.KEYTABLES_PROPERTY_NAME)
           .orElseThrow(() -> new IllegalArgumentException("missing keytables"));
       props.put(OSHDBDriver.KEYTABLES_PROPERTY_NAME, keyTablesUrl);
-      try (var ktConnection = DriverManager.getConnection(keyTablesUrl);
-          var keytables = new OSHDBJdbc(ktConnection);
-          var oshdb = new OSHDBIgnite(ignite)) {
+      // initialize data source for keytables
+      try (var dsKeytables = new HikariDataSource();
+          var oshdb = new OSHDBIgnite(ignite, dsKeytables)) {
+        dsKeytables.setJdbcUrl(keyTablesUrl);
         oshdb.prefix(prefix);
-        var connection = new OSHDBConnection(props, oshdb, keytables);
+        var connection = new OSHDBConnection(props, oshdb);
         return connect.apply(connection);
       }
     }

oshdb-helpers/oshdb-database-driver/src/test/java/org/heigit/ohsome/oshdb/helpers/db/OSHDBDriverH2Test.java

@@ -6,7 +6,6 @@
 
 import java.util.Properties;
 import org.heigit.ohsome.oshdb.api.db.OSHDBDatabase;
-import org.heigit.ohsome.oshdb.api.db.OSHDBJdbc;
 import org.heigit.ohsome.oshdb.util.tagtranslator.TagTranslator;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
@@ -25,7 +24,6 @@ public OSHDBDriverH2Test() {
   private static int testGetters(OSHDBConnection oshdb) {
     assertTrue(oshdb.getProps() instanceof Properties);
     assertTrue(oshdb.getOSHDB() instanceof OSHDBDatabase);
-    assertTrue(oshdb.getKeytables() instanceof OSHDBJdbc);
     assertTrue(oshdb.getTagTranslator() instanceof TagTranslator);
     return 0;
   }