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.
|
Method Summary |
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 |
LocalDatastoreCostAnalysis
public LocalDatastoreCostAnalysis(com.google.appengine.api.datastore.dev.LocalCompositeIndexManager indexManager)
getCreationCostAnalysis
public CreationCostAnalysis getCreationCostAnalysis(EntityProto e)
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.