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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.*;
import com.yahoo.document.serialization.DocumentDeserializer;
import com.yahoo.document.serialization.DocumentDeserializerFactory;
import com.yahoo.io.GrowableByteBuffer;
/**
* An entry in serialized form.
*
* @author <a href="mailto:thomasg@yahoo-inc.com">Thomas Gundersen</a>, <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
*/
class BinaryEntry extends Entry {
private MetaEntry metaEntry;
private byte[] buffer;
private DocumentTypeManager docMan;
/**
* Creates an entry from serialized form.
* @param docMan The documentmanager to use when deserializing.
* @param buffer the buffer to read the entry from
* @param entryIndex the index of the entry in the buffer
*/
BinaryEntry(DocumentTypeManager docMan, byte[] buffer, int entryIndex) {
this.buffer = buffer;
metaEntry = new MetaEntry(buffer, 4 + entryIndex * MetaEntry.SIZE);
this.docMan = docMan;
}
@Override
public boolean valid() { return buffer != null; }
@Override
public boolean isRemoveEntry() { return (metaEntry.flags & MetaEntry.REMOVE_ENTRY) != 0; }
@Override
public boolean isBodyStripped() { return (metaEntry.flags & MetaEntry.BODY_STRIPPED) != 0; }
@Override
public boolean isUpdateEntry() { return (metaEntry.flags & MetaEntry.UPDATE_ENTRY) != 0; }
@Override
public long getTimestamp() { return metaEntry.timestamp; }
@Override
public DocumentOperation getDocumentOperation() {
DocumentDeserializer buf = DocumentDeserializerFactory.create42(
docMan,
GrowableByteBuffer.wrap(buffer, metaEntry.headerPos, metaEntry.headerLen),
(metaEntry.bodyLen > 0) ? GrowableByteBuffer.wrap(buffer, metaEntry.bodyPos, metaEntry.bodyLen) : null
);
DocumentOperation op;
if ((metaEntry.flags & MetaEntry.UPDATE_ENTRY) != 0) {
op = new DocumentUpdate(buf);
} else if ((metaEntry.flags & MetaEntry.REMOVE_ENTRY) != 0) {
op = new DocumentRemove(new Document(buf).getId());
} else {
op = new DocumentPut(new Document(buf));
((DocumentPut) op).getDocument().setLastModified(getTimestamp());
}
return op;
}
@Override
public DocumentOperation getHeader() {
DocumentDeserializer buf = DocumentDeserializerFactory.create42(docMan, GrowableByteBuffer.wrap(buffer, metaEntry.headerPos, metaEntry.headerLen));
if ((metaEntry.flags & MetaEntry.UPDATE_ENTRY) != 0) {
return new DocumentUpdate(buf);
} else if ((metaEntry.flags & MetaEntry.REMOVE_ENTRY) != 0) {
return new DocumentRemove(new Document(buf).getId());
} else {
DocumentPut op = new DocumentPut(new Document(buf));
op.getDocument().setLastModified(getTimestamp());
return op;
}
}
}
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