private void advanceBlock() throws IOException {
block = readBlock();
if (block == null) {
valid = false;
return;
}
pointer = 0;
available = block.getNumObjects();
byte[] uncompressed = Decompression.decompress(block);
ByteArrayInputStream bais = new ByteArrayInputStream(uncompressed);
CompactReader reader = new InputStreamCompactReader(bais);
switch (block.getType()) {
case Definitions.BLOCK_TYPE_NODES:
entityType = EntityType.Node;
ids = ReaderUtil.parseNodeIds(reader, block);
break;
case Definitions.BLOCK_TYPE_WAYS:
entityType = EntityType.Way;
ids = ReaderUtil.parseWayIds(reader, block);
break;
case Definitions.BLOCK_TYPE_RELATIONS:
entityType = EntityType.Relation;
ids = ReaderUtil.parseRelationIds(reader, block);
break;
}
}
