adds labels to contraint and table

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

@@ -6,7 +6,7 @@ import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement
 
 @JacksonXmlRootElement(localName = "constraint")
-class Constraint () {
+class Constraint(): Labelled {
     fun left(): Collection<Column> {
         return source.columns
     }
@@ -42,6 +42,11 @@ class Constraint () {
     @JacksonXmlElementWrapper(useWrapping = false)
     var target = Target()
 
+    @JacksonXmlProperty(isAttribute = true)
+    var labels: String? = null
+
+    private var labeller = Labeller()
+
     fun clone():Constraint {
         val objectMapper = ObjectMapper()
         val asString = objectMapper.writeValueAsString(this)
@@ -138,6 +143,29 @@ class Constraint () {
         }
     }
 
+    override fun resetLabels(labelsAsString: String): String {
+        labels = labeller.resetLabels(labelsAsString)
+        return labelsAsString()
+    }
+
+    override fun addLabels(labelsAsString: String): String {
+        labels = labeller.addLabels(labelsAsString)
+        return labelsAsString()
+    }
+
+    override fun addLabels(newLabels: List<Label>): String {
+        labels = labeller.addLabels(newLabels)
+        return labelsAsString()
+    }
+
+    override fun labelsAsString(): String {
+        return labels?: ""
+    }
+
+    override fun hasLabel(label: String): Boolean {
+        return labeller.hasLabel(label)
+    }
+
     override fun toString(): String {
         if (source==null) return "no source"
         if (source.columns==null || source.columns.isEmpty()) return "no source columns"

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

@@ -4,7 +4,7 @@ import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement
 
 @JacksonXmlRootElement(localName = "table")
-class Table () {
+class Table (): Labelled {
 
     @JacksonXmlProperty(isAttribute = true)
     var name: String =""
@@ -23,6 +23,11 @@ class Table () {
 
     var columns= ArrayList<Column>()
 
+    @JacksonXmlProperty(isAttribute = true)
+    var labels: String? = null
+
+    private var labeller = Labeller()
+
     fun hasColumn(nameToFind:String): Boolean {
         for (col in columns) {
             if (col.name.equals(nameToFind)) return true
@@ -62,4 +67,32 @@ class Table () {
         this.columns.addAll(cols)
     }
 
+    override fun resetLabels(labelsAsString: String): String {
+        labels = labeller.resetLabels(labelsAsString)
+        return labelsAsString()
+    }
+
+    override fun addLabels(labelsAsString: String): String {
+        labels = labeller.addLabels(labelsAsString)
+        return labelsAsString()
+    }
+
+    fun addColomunsLabels(labelsAsString: String): String {
+        for (column in columns) column.addLabels(labelsAsString)
+        return ""
+    }
+
+    override fun addLabels(newLabels: List<Label>): String {
+        labels = labeller.addLabels(newLabels)
+        return labelsAsString()
+    }
+
+    override fun labelsAsString(): String {
+        return labels?: ""
+    }
+
+    override fun hasLabel(label: String): Boolean {
+        return labeller.hasLabel(label)
+    }
+
 }

src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/YAMLSerializerDatabaseTest.kt

@@ -42,12 +42,14 @@ class YAMLSerializerDatabaseTest {
                 condition: ""
                 parent: null
                 columns: []
+                labels: null
               - name: ""
                 id: ""
                 view: ""
                 condition: ""
                 parent: null
                 columns: []
+                labels: null
               constraints: []
             mappings: []
             source: ""