com.google.appengine.tools.mapreduce.outputs

Class DatastoreOutput.DatastoreOutputWriter

java.lang.Object

com.google.appengine.tools.mapreduce.OutputWriter<com.google.appengine.api.datastore.Entity>

com.google.appengine.tools.mapreduce.outputs.DatastoreOutput.DatastoreOutputWriter

All Implemented Interfaces:

Serializable

Enclosing class:

DatastoreOutput

public static class DatastoreOutput.DatastoreOutputWriter
extends OutputWriter<com.google.appengine.api.datastore.Entity>

See Also:

Serialized Form

Method Summary

Methods

Modifier and Type	Method and Description
boolean	allowSliceRetry()
void	beginSlice() Prepares the writer for writing after possibly having gone through serialization or deserialization.
void	endSlice() Prepares the writer for possible serialization.
long	estimateMemoryRequirement() Returns the estimated memory that will be used by this writer in bytes.
void	write(com.google.appengine.api.datastore.Entity entity) Writes a value to the output.

Methods inherited from class com.google.appengine.tools.mapreduce.OutputWriter

beginShard, cleanup, close, endShard, getContext, open, setContext

Methods inherited from class java.lang.Object

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

Method Detail

beginSlice

public void beginSlice()

Description copied from class: OutputWriter

Prepares the writer for writing after possibly having gone through serialization or deserialization.

Overrides:

beginSlice in class OutputWriter<com.google.appengine.api.datastore.Entity>

write

public void write(com.google.appengine.api.datastore.Entity entity)

Description copied from class: OutputWriter

Writes a value to the output.

Specified by:

write in class OutputWriter<com.google.appengine.api.datastore.Entity>

endSlice

public void endSlice()

Description copied from class: OutputWriter

Prepares the writer for possible serialization.

Overrides:

endSlice in class OutputWriter<com.google.appengine.api.datastore.Entity>

estimateMemoryRequirement

public long estimateMemoryRequirement()

Description copied from class: OutputWriter

Returns the estimated memory that will be used by this writer in bytes. (This is normally just set to the size of the buffers used by the implementation)

Overrides:

estimateMemoryRequirement in class OutputWriter<com.google.appengine.api.datastore.Entity>

allowSliceRetry

public boolean allowSliceRetry()

Overrides:

allowSliceRetry in class OutputWriter<com.google.appengine.api.datastore.Entity>