Avoid Serializable interface and use typed Comparable<T>

6 files changed, 12 insertions, 20 deletions

diff --git a/document/src/main/java/com/yahoo/document/CompressionConfig.java b/document/src/main/java/com/yahoo/document/CompressionConfig.java
index 69769148869..2fa4e40d5b6 100644
--- a/document/src/main/java/com/yahoo/document/CompressionConfig.java
+++ b/document/src/main/java/com/yahoo/document/CompressionConfig.java
@@ -3,9 +3,8 @@ package com.yahoo.document;
 
 import com.yahoo.compress.CompressionType;
 
-import java.io.Serializable;
 
-public class CompressionConfig implements Serializable {
+public class CompressionConfig {
 
     public CompressionConfig(CompressionType type,
                              int level,
diff --git a/document/src/main/java/com/yahoo/document/DataType.java b/document/src/main/java/com/yahoo/document/DataType.java
index d5de78cd21d..b185ff53c87 100644
--- a/document/src/main/java/com/yahoo/document/DataType.java
+++ b/document/src/main/java/com/yahoo/document/DataType.java
@@ -20,7 +20,6 @@ import com.yahoo.vespa.objects.Identifiable;
 import com.yahoo.vespa.objects.Ids;
 import com.yahoo.vespa.objects.ObjectVisitor;
 
-import java.io.Serializable;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.LinkedList;
@@ -32,7 +31,7 @@ import java.util.List;
  *
  * @author bratseth
  */
-public abstract class DataType extends Identifiable implements Serializable, Comparable<DataType> {
+public abstract class DataType extends Identifiable implements Comparable<DataType> {
 
     // The global class identifier shared with C++.
     public static int classId = registerClass(Ids.document + 50, DataType.class);
@@ -280,7 +279,7 @@ public abstract class DataType extends Identifiable implements Serializable, Com
      */
     public FieldPath buildFieldPath(String fieldPathString) {
         if (fieldPathString.length() > 0) {
-            throw new IllegalArgumentException("Datatype " + toString() +
+            throw new IllegalArgumentException("Datatype " + this +
                                                " does not support further recursive structure: " + fieldPathString);
         }
         return new FieldPath();
@@ -318,7 +317,7 @@ public abstract class DataType extends Identifiable implements Serializable, Com
 
     @Override
     public int compareTo(DataType dataType) {
-        return Integer.valueOf(dataTypeId).compareTo(dataType.dataTypeId);
+        return Integer.compare(dataTypeId, dataType.dataTypeId);
     }
 
     /** Returns whether this is a multivalue type, i.e either a CollectionDataType or a MapDataType */
diff --git a/document/src/main/java/com/yahoo/document/DataTypeName.java b/document/src/main/java/com/yahoo/document/DataTypeName.java
index b8e956e6b96..ef9ddd2b21d 100644
--- a/document/src/main/java/com/yahoo/document/DataTypeName.java
+++ b/document/src/main/java/com/yahoo/document/DataTypeName.java
@@ -4,14 +4,12 @@ package com.yahoo.document;
 import com.yahoo.text.Utf8Array;
 import com.yahoo.text.Utf8String;
 
-import java.io.Serializable;
-
 /**
  * A full document type name. The name is case sensitive. This is a <i>value object</i>.
  *
  * @author bratseth
  */
-public final class DataTypeName implements Serializable {
+public final class DataTypeName {
 
     private final Utf8String name;
 
diff --git a/document/src/main/java/com/yahoo/document/DocumentId.java b/document/src/main/java/com/yahoo/document/DocumentId.java
index 3512c5cb7b7..81592a5c9ff 100644
--- a/document/src/main/java/com/yahoo/document/DocumentId.java
+++ b/document/src/main/java/com/yahoo/document/DocumentId.java
@@ -10,13 +10,12 @@ import com.yahoo.vespa.objects.Deserializer;
 import com.yahoo.vespa.objects.Identifiable;
 import com.yahoo.vespa.objects.Serializer;
 
-import java.io.Serializable;
 import java.util.Objects;
 
 /**
  * The id of a document
  */
-public class DocumentId extends Identifiable implements Serializable {
+public class DocumentId extends Identifiable {
 
     private IdString id;
     private GlobalId globalId = null;
diff --git a/document/src/main/java/com/yahoo/document/Field.java b/document/src/main/java/com/yahoo/document/Field.java
index e2204ada7e5..dfe51f776e4 100644
--- a/document/src/main/java/com/yahoo/document/Field.java
+++ b/document/src/main/java/com/yahoo/document/Field.java
@@ -7,8 +7,6 @@ import com.yahoo.document.fieldset.FieldSet;
 import com.yahoo.document.fieldset.NoFields;
 import com.yahoo.vespa.objects.FieldBase;
 
-import java.io.Serializable;
-
 /**
  * A name and type. Fields are contained in document types to describe their fields,
  * but is also used to represent name/type pairs which are not part of document types.
@@ -16,7 +14,7 @@ import java.io.Serializable;
  * @author Thomas Gundersen
  * @author bratseth
  */
-public class Field extends FieldBase implements FieldSet, Comparable, Serializable {
+public class Field extends FieldBase implements FieldSet, Comparable<Field> {
 
     protected DataType dataType;
     protected int fieldId;
@@ -74,8 +72,8 @@ public class Field extends FieldBase implements FieldSet, Comparable, Serializab
         this(name, field.dataType, null);
     }
 
-    public int compareTo(Object o) {
-        return fieldId - ((Field) o).fieldId;
+    public int compareTo(Field o) {
+        return fieldId - o.fieldId;
     }
 
     /**
diff --git a/document/src/main/java/com/yahoo/document/GlobalId.java b/document/src/main/java/com/yahoo/document/GlobalId.java
index b9d454dd007..c378f76a9e8 100644
--- a/document/src/main/java/com/yahoo/document/GlobalId.java
+++ b/document/src/main/java/com/yahoo/document/GlobalId.java
@@ -16,7 +16,7 @@ import java.util.Arrays;
  *
  * @author Simon Thoresen Hult
  */
-public class GlobalId implements Comparable {
+public class GlobalId implements Comparable<GlobalId> {
 
     /**
      * The number of bytes in a global id. This must match the C++ constant in "document/base/globalid.h".
@@ -119,9 +119,8 @@ public class GlobalId implements Comparable {
         return Arrays.equals(raw, rhs.raw);
     }
 
-    public int compareTo(Object o) {
-        GlobalId other = (GlobalId) o;
-
+    @Override
+    public int compareTo(GlobalId other) {
         for (int i=0 ; i<LENGTH; i++) {
             int thisByte = 0xF & (int) raw[i];
             int otherByte = 0xF & (int) other.raw[i];