com.netflix.hollow.core.read.engine

Class HollowBlobReader

java.lang.Object

com.netflix.hollow.core.read.engine.HollowBlobReader

public class HollowBlobReader
extends java.lang.Object

A HollowBlobReader is used to populate and update data in a HollowReadStateEngine, via the consumption of snapshot and delta blobs.

Constructor Summary

Constructors

Constructor and Description
HollowBlobReader(HollowReadStateEngine stateEngine)
HollowBlobReader(HollowReadStateEngine stateEngine, HollowBlobHeaderReader headerReader)

Method Summary

Methods

Modifier and Type	Method and Description
void	applyDelta(java.io.InputStream is) Update the state engine using a delta (or reverse delta) blob from the provided InputStream.
void	readSnapshot(java.io.InputStream is) Initialize the state engine using a snapshot blob from the provided InputStream.
void	readSnapshot(java.io.InputStream is, HollowFilterConfig filter) Initialize the state engine using a snapshot blob from the provided InputStream.

Methods inherited from class java.lang.Object

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

Constructor Detail

HollowBlobReader

public HollowBlobReader(HollowReadStateEngine stateEngine)

HollowBlobReader

public HollowBlobReader(HollowReadStateEngine stateEngine,
                HollowBlobHeaderReader headerReader)

Method Detail

readSnapshot

public void readSnapshot(java.io.InputStream is)
                  throws java.io.IOException

Initialize the state engine using a snapshot blob from the provided InputStream.

Throws:

java.io.IOException

readSnapshot

public void readSnapshot(java.io.InputStream is,
                HollowFilterConfig filter)
                  throws java.io.IOException

Initialize the state engine using a snapshot blob from the provided InputStream.

Apply the provided HollowFilterConfig to the state.

Throws:

java.io.IOException

applyDelta

public void applyDelta(java.io.InputStream is)
                throws java.io.IOException

Update the state engine using a delta (or reverse delta) blob from the provided InputStream.

If a HollowFilterConfig was applied at the time the HollowReadStateEngine was initialized with a snapshot, it will continue to be in effect after the state is updated.

Throws:

java.io.IOException