@Override public boolean allowsDynamicSplitting() { try { return getCurrentSource().isSplittable(); } catch (Exception e) { throw new RuntimeException( String.format("Error determining if %s allows dynamic splitting", this), e); } }
@Override protected final boolean startImpl() throws IOException { FileBasedSource<T> source = getCurrentSource(); this.channel = FileSystems.open(source.getSingleFileMetadata().resourceId()); if (channel instanceof SeekableByteChannel) { SeekableByteChannel seekChannel = (SeekableByteChannel) channel; seekChannel.position(source.getStartOffset()); } else { // Channel is not seekable. Must not be a subrange. checkArgument( source.mode != Mode.SINGLE_FILE_OR_SUBRANGE, "Subrange-based sources must only be defined for file types that support seekable " + " read channels"); checkArgument( source.getStartOffset() == 0, "Start offset %s is not zero but channel for reading the file is not seekable.", source.getStartOffset()); } startReading(channel); // Advance once to load the first record. return advanceImpl(); }
@Override public synchronized XmlSource<T> getCurrentSource() { return (XmlSource<T>) super.getCurrentSource(); }