fix for #509

modules/swagger-core/src/main/scala/com/wordnik/swagger/converter/JodaDateTimeConverter.scala

@@ -17,8 +17,8 @@ class JodaDateTimeConverter extends ModelConverter with BaseConverter {
   // }
   // 
   // (note the keys are lowercase when matching)
-  override def typeMap = Map("datetime" -> "Date")
+  override def typeMap = Map("datetime" -> "Date", "xmlgregoriancalendar" -> "Date")
 
   // don't expand DateTime models
-  override def ignoredClasses: Set[String] = Set("org.joda.time.DateTime")
+  override def ignoredClasses: Set[String] = Set("org.joda.time.DateTime", "javax.xml.datatype.XMLGregorianCalendar")
 }

modules/swagger-core/src/test/scala/converter/XMLGregorianCalendarTest.scala

@@ -0,0 +1,46 @@
+package converter
+
+import model._
+
+import com.wordnik.swagger.annotations._
+import com.wordnik.swagger.converter._
+import com.wordnik.swagger.core.util._
+import com.wordnik.swagger.model._
+
+import org.joda.time.DateTime
+
+import scala.collection.mutable.LinkedHashMap
+import scala.annotation.target.field
+import javax.xml.datatype.XMLGregorianCalendar
+
+import org.junit.runner.RunWith
+import org.scalatest.junit.JUnitRunner
+import org.scalatest.FlatSpec
+import org.scalatest.matchers.ShouldMatchers
+
+@RunWith(classOf[JUnitRunner])
+class XMLGregorianCalendarTest extends FlatSpec with ShouldMatchers {
+  it should "read a model with XMLGregorianCalendar" in {
+    val models = ModelConverters.readAll(classOf[ModelWithCalendar])
+    models.size should be (1) // don't create a Joda DateTime object
+
+    val model = models.head
+    val nameProperty = model.properties("name")
+    nameProperty.`type` should be ("string")
+    nameProperty.position should be (2)
+    nameProperty.description should be (Some("name of the model"))
+
+    val dateTimeProperty = model.properties("createdAt")
+    dateTimeProperty.`type` should be ("Date")
+    dateTimeProperty.position should be (1)
+    dateTimeProperty.required should be (true)
+    dateTimeProperty.description should be (Some("creation timestamp"))
+
+    println(JsonSerializer.asJson(models.head))
+  }
+}
+
+
+case class ModelWithCalendar (
+  @(ApiModelProperty @field)(value = "name of the model", position = 2) name: String,
+  @(ApiModelProperty @field)(value = "creation timestamp", required = true, position = 1) createdAt: XMLGregorianCalendar)