Bug 512386: JPQL initialization constructor doesnt support CONCAT

Signed-off-by: Will Dazey <dazeydev.3@gmail.com>
Reviewed-by: Lukas Jungmann <lukas.jungmann@oracle.com>
diff --git a/foundation/org.eclipse.persistence.core/src/org/eclipse/persistence/internal/jpa/jpql/ExpressionBuilderVisitor.java b/foundation/org.eclipse.persistence.core/src/org/eclipse/persistence/internal/jpa/jpql/ExpressionBuilderVisitor.java
index 4b7a4c1..b9fea43 100644
--- a/foundation/org.eclipse.persistence.core/src/org/eclipse/persistence/internal/jpa/jpql/ExpressionBuilderVisitor.java
+++ b/foundation/org.eclipse.persistence.core/src/org/eclipse/persistence/internal/jpa/jpql/ExpressionBuilderVisitor.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006, 2015 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved.
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
  * which accompanies this distribution.
@@ -10,6 +10,8 @@
  * Contributors:
  *     Oracle - initial API and implementation
  *
+ *     04/11/2017-2.6 Will Dazey
+ *       - 512386: Concat expression return type Boolean -> String
  ******************************************************************************/
 package org.eclipse.persistence.internal.jpa.jpql;
 
@@ -806,7 +808,7 @@
         queryExpression = newExpression;
 
         // Set the expression type
-        type[0] = Boolean.class;
+       type[0] = String.class;
     }
 
     /**
diff --git a/jpa/eclipselink.jpa.test/src/org/eclipse/persistence/testing/tests/jpa/jpql/JUnitJPQLComplexTestSuite.java b/jpa/eclipselink.jpa.test/src/org/eclipse/persistence/testing/tests/jpa/jpql/JUnitJPQLComplexTestSuite.java
index f517569..9f5586e 100644
--- a/jpa/eclipselink.jpa.test/src/org/eclipse/persistence/testing/tests/jpa/jpql/JUnitJPQLComplexTestSuite.java
+++ b/jpa/eclipselink.jpa.test/src/org/eclipse/persistence/testing/tests/jpa/jpql/JUnitJPQLComplexTestSuite.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2017 Oracle and/or its affiliates. All rights reserved.
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
  * which accompanies this distribution.
@@ -9,6 +9,9 @@
  *
  * Contributors:
  *     Oracle - initial API and implementation from Oracle TopLink
+ *
+ *     04/11/2017-2.6 Will Dazey  
+ *       - 512386: Add constructor initialization with CONCAT test
  ******************************************************************************/
 package org.eclipse.persistence.testing.tests.jpa.jpql;
 
@@ -3589,6 +3592,8 @@
         query.getResultList();
         query = em.createQuery("Select new org.eclipse.persistence.testing.tests.jpa.jpql.JUnitJPQLComplexTestSuite.EmployeeDetail(MAX(e.firstName), MAX(e.lastName)) from Employee e");
         query.getResultList();
+        query = em.createQuery("Select new org.eclipse.persistence.testing.tests.jpa.jpql.JUnitJPQLComplexTestSuite.EmployeeDetail(CONCAT(e.firstName, '_', e.lastName), e.lastName) from Employee e");
+        query.getResultList();
         query = em.createQuery("Select 1 from Employee e");
         query.getResultList();
         // Bug#354344