java/src/main/com/google/appengine/api/datastore/PreQueryContext.java

   1 // Copyright 2012 Google. All Rights Reserved.
   2 package com.google.appengine.api.datastore;
   3
   4 import java.util.Arrays;
   5
   6 /**
   7  * Concrete {@link CallbackContext} implementation that is specific to
   8  * intercepted queries. Methods annotated with {@PreQuery} that receive
   9  * instances of this class may modify the {@link Query} returned by calling
  10  * {@link #getCurrentElement()}. This is an effective way to modify queries
  11  * prior to execution.
  12  *
  13  */
  14 public final class PreQueryContext extends BaseCallbackContext<Query> {
  15
  16   PreQueryContext(CurrentTransactionProvider currentTransactionProvider, Query query) {
  17     super(currentTransactionProvider, Arrays.asList(new Query(query)));
  18   }
  19
  20   @Override
  21   String getKind(Query query) {
  22     return query.getKind();
  23   }
  24 }