RLETriple* RLEGenericDecoder::getTriple(unsigned int triplePos_) {
if (triplePos_>=getSize()) return false;
// to guarantee atomicity in reading if there is a failure
int oldPos=reader->getCurrentPos();
reader->skipToStringPos(triplePos_);
RLETriple* t = getNextTriple();
/*unsigned int value;
if (!reader->readBits(value, valueSize)) {
reader->skipToBitPos(oldBitPos);
Log::writeToLog("RLEGenericDecoder", 0, "getTriple() Could not read value");
return NULL;
}
if (!reader->readBits(result->startPos, startPosSize)) {
reader->skipToBitPos(oldBitPos);
Log::writeToLog("RLEGenericDecoder", 0, "getTriple() Could not read startPos");
return NULL;
}
if (!reader->readBits(result->reps, repsSize)) {
reader->skipToBitPos(oldBitPos);
Log::writeToLog("RLEGenericDecoder", 0, "getTriple() Could not read reps");
return NULL;
}*/
//result->value=(unsigned int) value; // assuming encoding for all positive values
//result->value->set(result->startPos, (byte*)&value);
//result->value = vp;
// return to old position for sequential read
reader->skipToStringPos(oldPos);
return t;
}
Block* RLEGenericDecoder::skipToBlock(unsigned int blockPos_) {
if (!initialized) throw new CodingException("RLEGenericDecoder: Error, decoder not initialized with buffer");
if (!skipToTriple(blockPos_)) return NULL;
RLETriple* triple=getNextTriple();
if (triple==NULL) return NULL;
block->setTriple(triple);
return block;
}
Block* RLEGenericDecoder::getNextBlock() {
if (!initialized) throw new CodingException("RLEGenericDecoder: Error, decoder not initialized with buffer");
RLETriple* triple=getNextTriple();
if (triple==NULL) return NULL;
block->setTriple(triple);
return block;
}
//consume the block wih position blockPos_
bool RLEDecoder::skipToPos(unsigned int blockPos_) {
throw new CodingException("DNA 7/2/06: I don't think this method is correct but I don't think it matters since this method never gets called in runtime code. Thus, I'll place this here to see if it gets called.");
if (!initialized) throw new CodingException("RLEDecoder: Error, decoder not initialized with buffer");
if (!skipToTriple(blockPos_)) return false;
RLETriple* triple = getNextTriple();
if (triple == NULL) return false;
return true;
}
RLETriple* RLEGenericDecoder::peekNextTriple() {
RLETriple* retTrip=getNextTriple();
if (retTrip) {
reader->unReadString();
return retTrip;
}
else
return NULL;
}
Block* RLEDecoder::getNextBlock() {
if (!initialized) throw new CodingException("RLEDecoder: Error, decoder not initialized with buffer");
RLETriple* triple = getNextTriple();
if (triple == NULL) return NULL;
if (block == NULL) {
block = new RLEBlock(triple, valSorted);
}
else {
block->setTriple(triple);
}
return block;
}
RLETriple* RLEDecoder::peekNextTriple() {
int oldBitPos = reader->getCurrentBitPosition();
RLETriple* retTrip = getNextTriple();
reader->skipToBitPos(oldBitPos);
return retTrip;
}
void PlainHeaderIteratorTripleString::doFetch() {
do {
getNextTriple();
} while(hasMoreTriples && (!nextTriple.match(pattern)));
}
