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LocalDatastoreCostAnalysis

com.google.appengine.api.datastore.dev

Class LocalDatastoreCostAnalysis

  • java.lang.Object
    • com.google.appengine.api.datastore.dev.LocalDatastoreCostAnalysis

  • public class LocalDatastoreCostAnalysis
extends java.lang.Object
    Utility class that can calculate the cost of writing (put or delete) a given Entity.

    • Constructor Summary

      Constructors 
      Constructor and Description
      LocalDatastoreCostAnalysis(com.google.appengine.api.datastore.dev.LocalCompositeIndexManager indexManager) 

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      CreationCostAnalysis getCreationCostAnalysis(EntityProto e) 
      Cost getWriteCost(EntityProto newEntity)
      Determines the cost of writing this entity, assuming no previous value exists.
      Cost getWriteOps(EntityProto oldEntity, EntityProto newEntity)
      Determines the cost of writing newEntity, assuming its current state in the datastore matches oldEntity.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • LocalDatastoreCostAnalysis

        public LocalDatastoreCostAnalysis(com.google.appengine.api.datastore.dev.LocalCompositeIndexManager indexManager)

    • Method Detail

      • getWriteCost

        public Cost getWriteCost(EntityProto newEntity)
        Determines the cost of writing this entity, assuming no previous value exists.
        Parameters:
        newEntity - The entity whose write cost we are determining.
        Returns:
        The cost of writing the given entity.

      • getWriteOps

        public Cost getWriteOps(EntityProto oldEntity,
                        EntityProto newEntity)
        Determines the cost of writing newEntity, assuming its current state in the datastore matches oldEntity.
        Parameters:
        oldEntity - Entity representing the current state in the datastore. Can be null.
        newEntity - Entity representing the desired state in the datastore.
        Returns:
        The cost of writing newEntity.