Package com.googlecode.objectify.impl

Class QueryEngine

java.lang.Object
com.googlecode.objectify.impl.QueryEngine
public class QueryEngine
extends Object
Logic for dealing with queries.
Author:
Jeff Schnitzer

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected com.google.appengine.api.datastore.AsyncDatastoreService
    ads
     
    protected LoaderImpl<?>
    loader
     
    protected com.google.appengine.api.datastore.Transaction
    transactionRaw
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    QueryEngine​(LoaderImpl<?> loader, com.google.appengine.api.datastore.AsyncDatastoreService ads, com.google.appengine.api.datastore.Transaction transactionRaw)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    queryCount​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
    The fundamental query count operation.
    <T> com.google.appengine.api.datastore.QueryResultIterable<T>
    queryHybrid​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
    Perform a keys-only plus batch gets.
    <T> com.google.appengine.api.datastore.QueryResultIterable<Key<T>>
    queryKeysOnly​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
    Perform a keys-only query.
    <T> com.google.appengine.api.datastore.QueryResultIterable<T>
    queryNormal​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
    A normal, non-hybrid query
    <T> com.google.appengine.api.datastore.QueryResultIterable<T>
    queryProjection​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
    A projection query.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • loader

      protected LoaderImpl<?> loader

    • ads

      protected com.google.appengine.api.datastore.AsyncDatastoreService ads

    • transactionRaw

      protected com.google.appengine.api.datastore.Transaction transactionRaw

  • Constructor Details

    • QueryEngine

      public QueryEngine​(LoaderImpl<?> loader, com.google.appengine.api.datastore.AsyncDatastoreService ads, com.google.appengine.api.datastore.Transaction transactionRaw)

  • Method Details

    • queryKeysOnly

      public <T> com.google.appengine.api.datastore.QueryResultIterable<Key<T>> queryKeysOnly​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
      Perform a keys-only query.

    • queryHybrid

      public <T> com.google.appengine.api.datastore.QueryResultIterable<T> queryHybrid​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
      Perform a keys-only plus batch gets.

    • queryNormal

      public <T> com.google.appengine.api.datastore.QueryResultIterable<T> queryNormal​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
      A normal, non-hybrid query

    • queryProjection

      public <T> com.google.appengine.api.datastore.QueryResultIterable<T> queryProjection​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
      A projection query. Bypasses the session entirely.

    • queryCount

      public int queryCount​(com.google.appengine.api.datastore.Query query, com.google.appengine.api.datastore.FetchOptions fetchOpts)
      The fundamental query count operation. This is sufficiently different from normal query().