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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vdslib;
import com.yahoo.vespa.objects.BufferSerializer;
import com.yahoo.vespa.objects.Deserializer;
import java.nio.ByteOrder;
import static java.nio.charset.StandardCharsets.UTF_8;
public class DocumentSummary {
private final Summary[] summaries;
public DocumentSummary(Deserializer buf) {
BufferSerializer bser = (BufferSerializer) buf; // This is a trick. This should be done in a different way.
bser.order(ByteOrder.BIG_ENDIAN);
buf.getInt(null); // legacy - ignored
int numSummaries = buf.getInt(null);
summaries = new Summary[numSummaries];
if (numSummaries > 0) {
int summaryBufferSize = buf.getInt(null);
byte[] cArr = bser.getBuf().array();
int start = bser.getBuf().arrayOffset() + bser.position();
bser.position(bser.position() + summaryBufferSize);
for(int i=0; i < numSummaries; i++) {
int summarySize = buf.getInt(null);
int end = start;
while (cArr[end++] != 0);
byte [] sb = new byte [summarySize];
System.arraycopy(cArr, end, sb, 0, summarySize);
summaries[i] = new Summary(new String(cArr, start, end-start-1, UTF_8), sb);
start = end + summarySize;
}
}
}
final public int getSummaryCount() { return summaries.length; }
final public Summary getSummary(int hitNo) { return summaries[hitNo]; }
public static class Summary implements Comparable<Summary> {
private final String docId;
private byte[] summary;
private Summary(String docId) {
this.docId = docId;
}
public Summary(String docId, byte [] summary) {
this(docId);
this.summary = summary;
}
final public String getDocId() { return docId; }
final public byte [] getSummary() { return summary; }
public int compareTo(Summary s) {
return getDocId().compareTo(s.getDocId());
}
}
}
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