1 files changed, 109 insertions, 0 deletions
diff --git a/document/src/main/java/com/yahoo/document/DocumentId.java b/document/src/main/java/com/yahoo/document/DocumentId.java
new file mode 100644
index 00000000000..59650ea23f0
--- /dev/null
+++ b/document/src/main/java/com/yahoo/document/DocumentId.java
@@ -0,0 +1,109 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.document;
+
+import com.yahoo.document.idstring.IdString;
+import com.yahoo.document.serialization.*;
+import com.yahoo.vespa.objects.Deserializer;
+import com.yahoo.vespa.objects.Identifiable;
+import com.yahoo.vespa.objects.Serializer;
+
+import java.io.Serializable;
+
+/**
+ * The id of a document
+ */
+public class DocumentId extends Identifiable implements Serializable {
+
+    private IdString id;
+    private GlobalId globalId;
+
+    /**
+     * Constructor used for deserialization.
+     */
+    public DocumentId(Deserializer buf) {
+        deserialize(buf);
+    }
+
+    /**
+     * Constructor. This constructor is used if the DocumentId is used outside of a Document object, but we have the
+     * URI.
+     *
+     * @param id Associate with this URI, storage address etc. is not applicable.
+     */
+    public DocumentId(String id) {
+        if (id == null) {
+            throw new IllegalArgumentException("Cannot create DocumentId from null id.");
+        }
+        this.id = IdString.createIdString(id);
+        globalId = null;
+    }
+
+    public DocumentId(IdString id) {
+        this.id = id;
+        globalId = null;
+    }
+
+    @Override
+    public DocumentId clone() {
+        DocumentId docId =  (DocumentId)super.clone();
+        return docId;
+    }
+
+    public void setId(IdString id) {
+        this.id = id;
+    }
+
+    public IdString getScheme() {
+        return id;
+    }
+
+    public byte[] getGlobalId() {
+        if (globalId == null) {
+            globalId = new GlobalId(id);
+        }
+        return globalId.getRawId();
+    }
+
+    public int compareTo(Object o) {
+        DocumentId cmp = (DocumentId)o;
+        return id.toString().compareTo(cmp.id.toString());
+    }
+
+    public boolean equals(Object o) {
+        return o instanceof DocumentId && id.equals(((DocumentId)o).id);
+    }
+
+    public int hashCode() {
+        return id.hashCode();
+    }
+
+    public String toString() {
+        return id.toString();
+    }
+
+    @Override
+    public void onSerialize(Serializer target) throws SerializationException {
+        if (target instanceof DocumentWriter) {
+            ((DocumentWriter)target).write(this);
+        } else {
+            target.put(null, id.toString());
+        }
+    }
+
+
+    public void onDeserialize(Deserializer data) throws DeserializationException {
+        if (data instanceof DocumentReader) {
+            id = ((DocumentReader)data).readDocumentId().getScheme();
+        } else {
+            id = IdString.createIdString(data.getString(null));
+        }
+    }
+
+    public boolean hasDocType() {
+        return id.hasDocType();
+    }
+
+    public String getDocType() {
+        return id.getDocType();
+    }
+}