Add support for findEach() on SqlQuery with RowMapper and scalar result

ebean-core/src/test/java/io/ebeaninternal/api/TDSpiEbeanServer.java

@@ -493,6 +493,10 @@ public class TDSpiEbeanServer implements SpiEbeanServer {
     return null;
   }
 
+  @Override
+  public <T> void findSingleAttributeEach(SpiSqlQuery query, Class<T> cls, Consumer<T> consumer) {
+  }
+
   @Override
   public <T> T findOneMapper(SpiSqlQuery query, RowMapper<T> mapper) {
     return null;

ebean-core/src/test/java/org/tests/query/sqlquery/SqlQueryTests.java

@@ -39,6 +39,28 @@ public class SqlQueryTests extends BaseTestCase {
     assertThat(lineAmounts).isNotEmpty();
   }
 
+  @Test
+  public void findSingleAttributeEach_decimal() {
+
+    ResetBasicData.reset();
+
+    String sql = "select (unit_price * order_qty) from o_order_detail where unit_price > ? order by (unit_price * order_qty) desc";
+
+    AtomicLong counter = new AtomicLong();
+    AtomicLong inc = new AtomicLong();
+
+    DB.sqlQuery(sql)
+      .setParameter(3)
+      .mapToScalar(BigDecimal.class)
+      .findEach(val -> {
+        counter.incrementAndGet();
+        inc.addAndGet(val.longValue());
+      });
+
+    assertThat(inc.get()).isGreaterThan(counter.get());
+    assertThat(counter.get()).isGreaterThan(0);
+  }
+
   @Test
   public void findSingleDecimal() {
 
@@ -141,6 +163,24 @@ public class SqlQueryTests extends BaseTestCase {
 
   private static final CustMapper CUST_MAPPER = new CustMapper();
 
+  @Test
+  public void findEach_mapper() {
+
+    ResetBasicData.reset();
+
+    String sql = "select id, name, status from o_customer where name is not null";
+
+    AtomicInteger counter = new AtomicInteger();
+    DB.sqlQuery(sql)
+      .mapTo(CUST_MAPPER)
+      .findEach(custDto -> {
+        counter.incrementAndGet();
+        assertThat(custDto.name).isNotNull();
+      });
+
+    assertThat(counter.get()).isGreaterThan(0);
+  }
+
   @Test
   public void findOne_mapper() {