Fixes : Db2: Eclipselink creates table with Db2 data type DOUBLE inst…

…ead of REAL for a Java float (eclipse-ee4j#2296)

foundation/org.eclipse.persistence.core/src/main/java/org/eclipse/persistence/platform/database/DB2Platform.java

@@ -311,7 +311,7 @@ protected Hashtable<Class<?>, FieldTypeDefinition> buildFieldTypes() {
 
         fieldTypeMapping.put(Integer.class, new FieldTypeDefinition("INTEGER", false));
         fieldTypeMapping.put(Long.class, new FieldTypeDefinition("BIGINT", false));
-        fieldTypeMapping.put(Float.class, new FieldTypeDefinition("FLOAT", false));
+        fieldTypeMapping.put(Float.class, new FieldTypeDefinition("REAL", false));
         fieldTypeMapping.put(Double.class, new FieldTypeDefinition("FLOAT", false));
         fieldTypeMapping.put(Short.class, new FieldTypeDefinition("SMALLINT", false));
         fieldTypeMapping.put(Byte.class, new FieldTypeDefinition("SMALLINT", false));