@Override
public void startObject(long oid, int prevSchemaVersion) {
if (posIndex == null) {
if (schemaIndexEntry == null) {
schemaIndexEntry = schemaIndex.getSchema(def);
}
posIndex = schemaIndexEntry.getObjectIndexLatestSchemaVersion();
}
PagedPosIndex prevIndex = schemaIndexEntry.getObjectIndexVersion(prevSchemaVersion);
currentPage = out.getPage();
currentOffs = out.getOffset();
// first remove possible previous position
final LongLongIndex.LLEntry objPos = oidIndex.findOidGetLong(oid);
if (objPos != null) {
long pos = objPos.getValue(); // long with 32=page + 32=offs
// prevPos.getValue() returns > 0, so the loop is performed at least once.
do {
// remove and report to FSM if applicable
// TODO
// In cache, use separate list for evolved objects to be written (Map<PC/OID,
// OriginalClassDef)
// Do not put those objects in dirty-list
// When checking for dirty (external) return whether contained in dirty-list.
// When...???
long nextPos = prevIndex.removePosLongAndCheck(pos);
// all secondary pages are marked.
nextPos |= PagedPosIndex.MARK_SECONDARY;
pos = nextPos;
} while (pos != PagedPosIndex.MARK_SECONDARY);
}
// Update pos index
oidIndex.insertLong(oid, currentPage, (int) currentOffs);
}
/** Not a true flush, just writes the stuff... */
@Override
public final void flush() {
// flush associated splits.
for (StorageChannelOutput paf : viewsOut) {
// flush() only writers
paf.flush();
}
for (StorageChannelInput paf : viewsIn) {
paf.reset();
}
try {
fc.force(false);
} catch (IOException e) {
throw DBLogger.newFatal("Error writing database file.", e);
}
}
@Override
public void flush() {
out.flush();
// posIndex may change during next transaction due to schema evolution
posIndex = null;
// setting this to null is important for revert() on failed commits
schemaIndexEntry = null;
}
public ObjectWriterSV(
StorageChannel file, PagedOidIndex oidIndex, ZooClassDef def, SchemaIndex schemaIndex) {
this.out = file.getWriter(true);
this.oidIndex = oidIndex;
out.setOverflowCallbackWrite(this);
this.def = def;
this.headerForWrite = def.getOid();
this.schemaIndex = schemaIndex;
}
@Override
public void writeDouble(double double1) {
out.writeDouble(double1);
}
@Override
public void skipWrite(int nBytes) {
out.skipWrite(nBytes);
}
@Override
public void writeLong(long long1) {
out.writeLong(long1);
}
@Override
public void writeShort(short short1) {
out.writeShort(short1);
}
@Override
public void writeFloat(float float1) {
out.writeFloat(float1);
}
@Override
public void writeInt(int int1) {
out.writeInt(int1);
}
@Override
public void writeChar(char char1) {
out.writeChar(char1);
}
/** This can be necessary when subsequent objects are of a different class. */
@Override
public void newPage() {
out.allocateAndSeekAP(PAGE_TYPE.DATA, 0, headerForWrite);
writeHeader();
}
@Override
public void writeByte(byte byte1) {
out.writeByte(byte1);
}
@Override
public void writeBoolean(boolean boolean1) {
out.writeBoolean(boolean1);
}
@Override
public void write(byte[] array) {
out.write(array);
}
@Override
public void writeString(String string) {
out.writeString(string);
}
private void writeHeader() {
out.writeLong(headerForWrite);
}
