Parallel execution and added core submodule

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "strangedb-core"]
+	path = strangedb-core
+	url = ssh://git@git.ignuranza.net:5003/andreacavalli/strangedb-core.git

src/main/java/it/cavallium/strangedb/java/objects/lists/StrangeDbList.java

@@ -63,7 +63,7 @@ public abstract class StrangeDbList<T> extends EnhancedObject implements Element
 	protected void forEachParallelUnsorted_(ConsumerWithIO<T> action) throws IOException {
 		try {
 			int size = size();
-			ExecutorService executorService = Executors.newFixedThreadPool(16, (r) -> new Thread(r, "StrangeDbList.forEachParallelUnsorted worker"));
+			ExecutorService executorService = ForkJoinPool.commonPool();
 			VariableWrapper<IOException> exceptionVariableWrapper = new VariableWrapper<>(null);
 			for (int i = 0; i < size; i++) {
 				final int index = i;

src/test/java/it/cavallium/strangedb/tests/ListContainer.java

@@ -8,6 +8,7 @@ import it.cavallium.strangedb.java.objects.lists.EnhancedObjectStrangeDbList;
 
 import java.io.IOException;
 import java.util.Random;
+import java.util.concurrent.*;
 
 public class ListContainer extends EnhancedObject {
 
@@ -21,7 +22,10 @@ public class ListContainer extends EnhancedObject {
 		super(databaseTools);
 		this.usersList = new EnhancedObjectStrangeDbList<>(databaseTools, User.class);
 		Random random = new Random();
+		ExecutorService threadPool = ForkJoinPool.commonPool();
 		for (int i = 0; i < count; i++) {
+			threadPool.execute(() -> {
+				try {
 					User usr;
 					int randomInt = random.nextInt(2);
 					switch (randomInt) {
@@ -38,6 +42,16 @@ public class ListContainer extends EnhancedObject {
 							throw new ArrayIndexOutOfBoundsException();
 					}
 					this.usersList.add(usr);
+				} catch (IOException ex) {
+					throw new CompletionException(ex);
+				}
+			});
+		}
+		threadPool.shutdown();
+		try {
+			threadPool.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
+		} catch (InterruptedException e) {
+			throw new IOException(e);
 		}
 	}
 

src/test/java/it/cavallium/strangedb/tests/Performance.java

@@ -62,7 +62,6 @@ public class Performance {
 		testS("DatabaseCore root creation", 300, Performance::regenDb, () -> db.loadRoot(PreloadedListContainer::new), () -> {});
 		final VariableWrapper<PreloadedListContainer> preloadedListContainer = new VariableWrapper<>(null);
 		final VariableWrapper<SimpleEnhancedObject> simpleEnhancedObjectContainer = new VariableWrapper<>(null);
-		/*
 		testS("ObjectStrangeDbList<Int> creation", 3000, () -> {
 			regenDb();
 			preloadedListContainer.var = db.loadRoot(PreloadedListContainer::new);
@@ -184,7 +183,6 @@ public class Performance {
 		}, () -> {
 			preloadedListContainer.var.list.size();
 		}, () -> {});
-		*/
 		for (int items = 1000; items <= 100000; items *= 10) {
 			final int itemsF = items;
 			testS("ListQuery: query with " + items + " items", 100 / (items / 1000), () -> {

src/test/java/it/cavallium/strangedb/tests/QueryTests.java

@@ -1,6 +1,7 @@
 package it.cavallium.strangedb.tests;
 
 import it.cavallium.strangedb.java.database.DatabaseJava;
+import it.cavallium.strangedb.java.objects.lists.ElementsArrayList;
 import it.cavallium.strangedb.java.objects.lists.ListQuery;
 import it.cavallium.strangedb.java.objects.lists.ValuePointer;
 import it.cavallium.strangedb.java.objects.lists.operations.Equals;
@@ -31,17 +32,21 @@ public class QueryTests {
 		path2 = Files.createTempFile("db-tests-blocks-", ".db");
 		path3 = Files.createTempFile("db-tests-references-", ".db");
 		db = new DatabaseJava(path1, path2, path3);
+		int i = 0;
+		db.getObjectsIO().registerClass(UserFullInfo.class, i++);
+		db.getObjectsIO().registerClass(User.class, i++);
+		db.getObjectsIO().registerClass(ListContainer.class, i++);
 	}
 
 	@Test
 	public void shouldCreateListAndQuery() throws IOException {
-		ListContainer root = db.loadRoot((db) -> new ListContainer(db, 1000));
+		ListContainer root = db.loadRoot((db) -> new ListContainer(db, 2000));
 		ListQuery query = ListQuery.create(ValuePointer.ofField(User.class, "firstName"), Equals.to(constantFirstName))
 						.and(ValuePointer.ofField(User.class, "username"), Equals.to(constantUsername))
 						.and(ValuePointer.ofField(User.class, "fullInfo").field(UserFullInfo.class, "bio"), Equals.to(constantBio));
 		long time1 = System.currentTimeMillis();
-		ArrayList<User> elements = root.usersList.query(query).asList();
-		System.out.println("Time elapsed: " + (System.currentTimeMillis() - time1));
+		ElementsArrayList<User> elements = root.usersList.query(query);
+		System.out.println("Time elapsed: " + String.format("%.2f", (System.currentTimeMillis() - time1) / 1000d) + " seconds");
 		System.out.println("Found " + elements.size() + " elements. First 5 items:");
 		assertNotEquals(elements.size(), 0);
 		for (int i = 0; i < (elements.size() > 10 ? 10 : elements.size()); i++) {

strangedb-core

@@ -0,0 +1 @@
+Subproject commit b425e4c12901dd277f944bcf1b0b0f245d8d23b5