#1405 - ENH: Add SqlQuery.findSingleAttribute() ... for returning single scalar values via SqlQuery

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

@@ -1,8 +1,8 @@
 package io.ebeaninternal.server.querydefn;
 
-import io.ebean.EbeanServer;
 import io.ebean.SqlRow;
 import io.ebeaninternal.api.BindParams;
+import io.ebeaninternal.api.SpiEbeanServer;
 import io.ebeaninternal.api.SpiSqlQuery;
 
 import java.util.List;
@@ -17,7 +17,7 @@ public class DefaultRelationalQuery implements SpiSqlQuery {
 
   private static final long serialVersionUID = -1098305779779591068L;
 
-  private final transient EbeanServer server;
+  private final transient SpiEbeanServer server;
 
   private String label;
 
@@ -39,16 +39,11 @@ public class DefaultRelationalQuery implements SpiSqlQuery {
   /**
    * Additional supply a query detail object.
    */
-  public DefaultRelationalQuery(EbeanServer server, String query) {
+  public DefaultRelationalQuery(SpiEbeanServer server, String query) {
     this.server = server;
     this.query = query;
   }
 
-  public DefaultRelationalQuery setQuery(String query) {
-    this.query = query;
-    return this;
-  }
-
   @Override
   public void findEach(Consumer<SqlRow> consumer) {
     server.findEach(this, consumer, null);
@@ -64,6 +59,11 @@ public class DefaultRelationalQuery implements SpiSqlQuery {
     return server.findList(this, null);
   }
 
+  @Override
+  public <T> T findSingleAttribute(Class<T> cls) {
+    return server.findSingleAttribute(this, cls);
+  }
+
   @Override
   public SqlRow findOne() {
     return server.findOne(this, null);