#1405 - ENH: add findSingleDecimal() and findSingleLong() alias methods for SqlQuery.findSingleAttribute() ...

src/main/java/io/ebean/SqlQuery.java

@@ -3,6 +3,7 @@ package io.ebean;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.List;
 import java.util.Optional;
 import java.util.function.Consumer;
@@ -147,6 +148,22 @@ public interface SqlQuery extends Serializable {
    */
   <T> T findSingleAttribute(Class<T> attributeType);
 
+  /**
+   * Execute the query returning a single BigDecimal value.
+   * <p>
+   * This is an alias for <code>findSingleAttribute(BigDecimal.class)</code>
+   * </p>
+   */
+  BigDecimal findSingleDecimal();
+
+  /**
+   * Execute the query returning a single Long value.
+   * <p>
+   * This is an alias for <code>findSingleAttribute(Long.class)</code>
+   * </p>
+   */
+  Long findSingleLong();
+
   /**
    * Execute the query returning a list of scalar attribute values.
    *

src/main/java/io/ebeaninternal/server/querydefn/DefaultRelationalQuery.java

@@ -7,6 +7,7 @@ import io.ebeaninternal.api.BindParams;
 import io.ebeaninternal.api.SpiEbeanServer;
 import io.ebeaninternal.api.SpiSqlQuery;
 
+import java.math.BigDecimal;
 import java.util.List;
 import java.util.Optional;
 import java.util.function.Consumer;
@@ -61,6 +62,16 @@ public class DefaultRelationalQuery implements SpiSqlQuery {
     return server.findList(this, null);
   }
 
+  @Override
+  public BigDecimal findSingleDecimal() {
+    return server.findSingleAttribute(this, BigDecimal.class);
+  }
+
+  @Override
+  public Long findSingleLong() {
+    return server.findSingleAttribute(this, Long.class);
+  }
+
   @Override
   public <T> T findSingleAttribute(Class<T> cls) {
     return server.findSingleAttribute(this, cls);

src/test/java/org/tests/query/sqlquery/SqlQueryTests.java

@@ -39,7 +39,21 @@ public class SqlQueryTests extends BaseTestCase {
   }
 
   @Test
-  public void findSingleAttribute_decimal() {
+  public void findSingleDecimal() {
+
+    ResetBasicData.reset();
+
+    String sql = "select max(unit_price) from o_order_detail where order_qty > ?";
+
+    BigDecimal maxPrice = Ebean.createSqlQuery(sql)
+      .setParameter(1, 2)
+      .findSingleDecimal();
+
+    assertThat(maxPrice).isNotNull();
+  }
+
+  @Test
+  public void findSingleAttribute_BigDecimal() {
 
     ResetBasicData.reset();
 
@@ -52,6 +66,21 @@ public class SqlQueryTests extends BaseTestCase {
     assertThat(maxPrice).isNotNull();
   }
 
+  @Test
+  public void findSingleLong() {
+
+    ResetBasicData.reset();
+
+    String sql = "select count(order_qty) from o_order_detail where unit_price > ?";
+
+    long count = Ebean.createSqlQuery(sql)
+      .setParameter(1, 2)
+      .findSingleLong();
+
+    assertThat(count).isGreaterThan(0);
+  }
+
+
   @Test
   public void findSingleAttribute_long() {