adds select limit parameter

src/main/kotlin/unibz.cs.semint.kprime/domain/dql/Select.kt

 package unibz.cs.semint.kprime.domain.dql
 
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement
 
 @JacksonXmlRootElement(localName = "select")
@@ -8,5 +9,7 @@ class Select {
     var attributes = ArrayList<Attribute>()
     var from = ArrayList<From>()
     var where = Where()
+    @JacksonXmlProperty(isAttribute = true)
+    var limit : String? = null
 
 }
\ No newline at end of file

src/main/kotlin/unibz.cs.semint.kprime/usecase/common/SQLizeSelectUseCase.kt

@@ -46,7 +46,7 @@ class SQLizeSelectUseCase {
         if (!select.where.condition.isEmpty()) {
             sql += "WHERE ${select.where.condition}"  //+ System.lineSeparator()
         }
-        sql += " LIMIT 10"  //+ System.lineSeparator()
+        sql += if (select.limit!=null) " LIMIT "+select.limit else  " LIMIT 10" //+ System.lineSeparator()
         return sql
     }