Index: src/test/org/apache/lucene/document/TestDocument.java
===================================================================
--- src/test/org/apache/lucene/document/TestDocument.java	(revision 962932)
+++ src/test/org/apache/lucene/document/TestDocument.java	(working copy)
@@ -1,5 +1,11 @@
 package org.apache.lucene.document;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+
 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 import org.apache.lucene.index.IndexWriter;
 import org.apache.lucene.index.Term;
@@ -276,4 +282,31 @@
       // expected
     }
   }
+  
+  public void testAddAll() {
+    List<Fieldable> fields = Arrays.asList( (Fieldable) new Field("field1", new byte[0], Field.Store.YES),
+                                            (Fieldable) new Field("field2", "", Field.Store.YES, Field.Index.ANALYZED) );
+    Document d = new Document();
+    d.addAll(fields);
+    assertEquals(2, d.getFields().size());
+    assertSame(fields.get(0), d.getFieldable(0));
+    assertSame(fields.get(1), d.getFieldable(1));
+
+    d.addAll(fields);
+    assertEquals(4, d.getFields().size());
+    assertSame(fields.get(0), d.getFieldable(2));
+    assertSame(fields.get(1), d.getFieldable(3));
+    
+    d.addAll(new HashSet<Fieldable>());
+    assertEquals(4, d.getFields().size());
+  }
+  
+  public void testAddAllExceptions() {
+    try {
+      (new Document()).addAll(null);
+      fail("expect a NullPointerException");
+    } catch( NullPointerException e ) {
+      // expected exception
+    }
+  }
 }
Index: src/java/org/apache/lucene/index/ParallelReader.java
===================================================================
--- src/java/org/apache/lucene/index/ParallelReader.java	(revision 962932)
+++ src/java/org/apache/lucene/index/ParallelReader.java	(working copy)
@@ -283,9 +283,7 @@
       }
       if (include) {
         List<Fieldable> fields = reader.document(n, fieldSelector).getFields();
-        for (Fieldable field : fields) {
-          result.add(field);
-        }
+        result.addAll(fields);
       }
     }
     return result;
Index: src/java/org/apache/lucene/document/Document.java
===================================================================
--- src/java/org/apache/lucene/document/Document.java	(revision 962932)
+++ src/java/org/apache/lucene/document/Document.java	(working copy)
@@ -88,7 +88,15 @@
   public final void add(Fieldable field) {
     fields.add(field);
   }
-  
+
+  /** add all of the provided {@link Fieldable}s to this Document.
+   * @see #add(Fieldable)
+   * @param fieldables
+   */
+  public void addAll(final Collection<Fieldable> fieldables) {
+    fields.addAll(fieldables);
+  }
+
   /**
    * <p>Removes field with the specified name from the document.
    * If multiple fields exist with this name, this method removes the first field that has been added.
@@ -138,6 +146,13 @@
     return (Field) getFieldable(name);
   }
 
+  /** allow index based access to the Fieldables
+   * @param i
+   * @return  the ith Fieldable
+   */
+  public final Fieldable getFieldable(final int i) {
+    return fields.get(i);
+  }
 
  /** Returns a field with the given name if any exist in this document, or
    * null.  If multiple fields exists with this name, this method returns the