#1211 - ENH: Support L2 cache complex natural keys include findList() queries

src/main/java/io/ebeaninternal/server/expression/SimpleExpression.java

@@ -5,6 +5,7 @@ import io.ebean.plugin.ExpressionPath;
 import io.ebeaninternal.api.SpiExpression;
 import io.ebeaninternal.api.SpiExpressionRequest;
 import io.ebeaninternal.server.el.ElPropertyValue;
+import io.ebeaninternal.api.NaturalKeyQueryData;
 
 import java.io.IOException;
 import java.util.Arrays;
@@ -26,6 +27,15 @@ public class SimpleExpression extends AbstractValueExpression {
     return null;
   }
 
+  @Override
+  public boolean naturalKey(NaturalKeyQueryData data) {
+    // can't use naturalKey cache for NOT IN
+    if (type != Op.EQ) {
+      return false;
+    }
+    return data.matchEq(propName, bindValue);
+  }
+
   @Override
   public void writeDocQuery(DocQueryContext context) throws IOException {
     if (type == Op.BETWEEN) {