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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.fs4;
import com.yahoo.document.GlobalId;
import java.nio.ByteBuffer;
/**
* Meta attributes on documents (not the document summaries themselves).
* Used in query results and get docusum packages
*
* @author bratseth
*/
public class DocumentInfo implements Cloneable {
private final byte [] globalId;
private final double metric;
private final int partId;
private final int distributionKey;
private final byte[] sortData;
DocumentInfo(ByteBuffer buffer, QueryResultPacket owner, byte[] sortData) {
globalId = new byte[GlobalId.LENGTH];
buffer.get(globalId);
metric = decodeMetric(buffer);
partId = owner.getMldFeature() ? buffer.getInt() : 0;
distributionKey = owner.getMldFeature() ? buffer.getInt() : 0;
this.sortData = sortData;
}
public DocumentInfo(GlobalId globalId, int metric, int partId, int distributionKey) {
this.globalId = globalId.getRawId();
this.metric = metric;
this.partId = partId;
this.distributionKey = distributionKey;
this.sortData = null;
}
private double decodeMetric(ByteBuffer buffer) {
return buffer.getDouble();
}
public GlobalId getGlobalId() { return new GlobalId(globalId); }
public byte [] getRawGlobalId() { return globalId; }
/** Raw rank score */
public double getMetric() { return metric; }
/** Partition this document resides on */
public int getPartId() { return partId; }
/** Unique key for the node this document resides on */
public int getDistributionKey() { return distributionKey; }
public byte[] getSortData() {
return sortData;
}
public String toString() {
return "document info [globalId=" + new GlobalId(globalId).toString() + ", metric=" + metric + "]";
}
/**
* Implements the Cloneable interface
*/
public Object clone() {
try {
return super.clone();
}
catch (CloneNotSupportedException e) {
throw new RuntimeException("Someone inserted a nonclonable superclass");
}
}
}
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