1 files changed, 7 insertions, 4 deletions
diff --git a/platform/indexing-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndex.java b/platform/indexing-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndex.java
index 4ad94f5865fc..3e96882ddea1 100644
--- a/platform/indexing-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndex.java
+++ b/platform/indexing-impl/src/com/intellij/psi/impl/cache/impl/id/IdIndex.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -43,19 +43,19 @@ public class IdIndex extends FileBasedIndexExtension<IdIndexEntry, Integer> {
   
   private final FileBasedIndex.InputFilter myInputFilter = new FileBasedIndex.InputFilter() {
     @Override
-    public boolean acceptInput(final VirtualFile file) {
+    public boolean acceptInput(@NotNull final VirtualFile file) {
       return isIndexable(file.getFileType());
     }
   };
 
   private final DataExternalizer<Integer> myValueExternalizer = new DataExternalizer<Integer>() {
     @Override
-    public void save(final DataOutput out, final Integer value) throws IOException {
+    public void save(@NotNull final DataOutput out, final Integer value) throws IOException {
       out.writeByte(value.intValue());
     }
 
     @Override
-    public Integer read(final DataInput in) throws IOException {
+    public Integer read(@NotNull final DataInput in) throws IOException {
       return Integer.valueOf(in.readByte());
     }
   };
@@ -107,16 +107,19 @@ public class IdIndex extends FileBasedIndexExtension<IdIndexEntry, Integer> {
     return myIndexer;
   }
 
+  @NotNull
   @Override
   public DataExternalizer<Integer> getValueExternalizer() {
     return myValueExternalizer;
   }
 
+  @NotNull
   @Override
   public KeyDescriptor<IdIndexEntry> getKeyDescriptor() {
     return myKeyDescriptor;
   }
 
+  @NotNull
   @Override
   public FileBasedIndex.InputFilter getInputFilter() {
     return myInputFilter;