With FetchConfig.ofLazy() honor query.setLazyLoadBatchSize()

Use 0 for default lazy batch such that it honors a value set via query.setLazyLoadBatchSize()

ebean-core/src/test/java/io/ebean/FetchConfigTest.java

@@ -1,6 +1,5 @@
 package io.ebean;
 
-import io.ebean.FetchConfig;
 import org.junit.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -10,7 +9,7 @@ public class FetchConfigTest {
   @Test
   public void testLazy() {
     FetchConfig config = new FetchConfig().lazy();
-    assertThat(config.getBatchSize()).isEqualTo(10);
+    assertThat(config.getBatchSize()).isEqualTo(0);
   }
 
   @Test

ebean-core/src/test/java/io/ebeaninternal/server/grammer/ParseFetchConfigTest.java

@@ -19,7 +19,7 @@ public class ParseFetchConfigTest {
   @Test
   public void parseLazy() {
     FetchConfig lazy = ParseFetchConfig.parse("lazy");
-    assertThat(lazy.getBatchSize()).isEqualTo(10);
+    assertThat(lazy.getBatchSize()).isEqualTo(0);
   }
 
   @Test

ebean-core/src/test/java/org/tests/query/TestQueryFindEach.java

@@ -169,22 +169,40 @@ public class TestQueryFindEach extends BaseTestCase {
     DB.find(OmBasicParent.class).delete();
     insertData();
 
+    test_setLazyLoadBatchSize_withFetchLazy();
+
     LoggedSqlCollector.start();
-    try (final Transaction transaction = DB.beginTransaction()) {
-      // DB.find(OmBasicParent.class).findList();
-      DB.find(OmBasicChild.class)
-        .setLazyLoadBatchSize(100)
-        //.fetchQuery("parent","name")
-        //.fetch("parent","name")
-        .findEach(child -> {
-          assertNotNull(child.getParent().getName());
-        });
-    }
+
+    DB.find(OmBasicChild.class)
+      .setLazyLoadBatchSize(100)
+      .findEach(child -> {
+        assertNotNull(child.getParent().getName());
+      });
 
     final List<String> sql = LoggedSqlCollector.stop();
     assertThat(sql.size()).isLessThan(50);
   }
 
+  private void test_setLazyLoadBatchSize_withFetchLazy() {
+
+    LoggedSqlCollector.start();
+
+    DB.find(OmBasicParent.class)
+      .setLazyLoadBatchSize(5)
+      .fetchLazy("children")
+      .setMaxRows(50)
+      .findEach(it -> {
+        it.getChildren().size();
+      });
+
+    final List<String> sql = LoggedSqlCollector.stop();
+    assertThat(sql).hasSize(11);
+    assertThat(sql.get(0)).contains(" from om_basic_parent ");
+    for (int i = 1; i < 11; i++) {
+      assertThat(sql.get(i)).contains(" --bind(Array[5]");
+    }
+  }
+
   @Transactional(batchSize = 40)
   private void insertData() {
     for (int i = 0; i < 150; i++) {