adds parse inclusion,double inclusion,multivalued schema constraint

src/main/kotlin/unibz.cs.semint.kprime/domain/ddl/SchemaCmdParser.kt

@@ -12,10 +12,26 @@ object SchemaCmdParser {
     }
 
     fun parseFunctionals(tableName: String,setExpression: String): Set<Constraint> {
+        return parseConstraint(setExpression, tableName, Constraint.TYPE.FUNCTIONAL.name)
+    }
+
+    fun parseMultivalued(tableName: String,setExpression: String): Set<Constraint> {
+        return parseConstraint(setExpression, tableName, Constraint.TYPE.MULTIVALUED.name)
+    }
+
+    fun parseInclusion(tableName: String,setExpression: String): Set<Constraint> {
+        return parseConstraint(setExpression, tableName, Constraint.TYPE.INCLUSION.name)
+    }
+
+    fun parseDoubleInclusion(tableName: String,setExpression: String): Set<Constraint> {
+        return parseConstraint(setExpression, tableName, Constraint.TYPE.DOUBLE_INCLUSION.name)
+    }
+
+    private fun parseConstraint(setExpression: String, tableName: String, type:String): Set<Constraint> {
         val constraintsToAdd = Constraint.set(setExpression)
         for (constraint in constraintsToAdd) {
-            constraint.name = tableName + ".functional"
-            constraint.type = Constraint.TYPE.FUNCTIONAL.name
+            constraint.name = "$tableName.$type"
+            constraint.type = type
             constraint.source.table = tableName
             constraint.target.table = tableName
         }