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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.vdslib;
import com.yahoo.document.DocumentTypeManager;
import com.yahoo.vespa.objects.Serializer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
/**
* @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
*/
class BinaryDocumentList extends DocumentList {
private DocumentTypeManager docMan;
private byte[] buffer;
private int docCount;
/**
* Create a new documentlist, using the given buffer.
*
* @param buffer buffer containing documents
*/
BinaryDocumentList(DocumentTypeManager docMan, byte[] buffer) {
this.docMan = docMan;
ByteBuffer buf = ByteBuffer.wrap(buffer);
buf.order(ByteOrder.LITTLE_ENDIAN);
docCount = buf.getInt();
this.buffer = buffer;
}
@Override
public Entry get(int index) throws ArrayIndexOutOfBoundsException {
if (index < docCount) {
return Entry.create(docMan, buffer, index);
} else {
throw new ArrayIndexOutOfBoundsException(index + " >= " + docCount);
}
}
@Override
public int size() { return docCount; }
@Override
public int getApproxByteSize() {
return buffer.length;
}
@Override
public void serialize(Serializer buf) {
buf.put(null, buffer);
}
}
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