Fix type collection serialization

2 files changed, 4 insertions, 0 deletions

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/model/Type.java b/src/main/java/pl/edu/mimuw/cloudatlas/model/Type.java
index 0994cba..4453aea 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/model/Type.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/model/Type.java
@@ -49,6 +49,8 @@ public abstract class Type implements Serializable {
         this.primaryType = primaryType;
     }
 
+    public Type() { this.primaryType = PrimaryType.NULL; };
+
     /**
      * Returns the primary type of this type.
      *
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/model/TypePrimitive.java b/src/main/java/pl/edu/mimuw/cloudatlas/model/TypePrimitive.java
index ad07c0a..a17cafa 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/model/TypePrimitive.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/model/TypePrimitive.java
@@ -78,6 +78,8 @@ public class TypePrimitive extends Type {
      */
     public static final TypePrimitive QUERY = new TypePrimitive(PrimaryType.QUERY);
 
+    private TypePrimitive() {}
+
     private TypePrimitive(PrimaryType primaryType) {
         super(primaryType);
         switch(primaryType) {