Example usage for javax.imageio.stream FileImageInputStream readInt

Introduction

In this page you can find the example usage for javax.imageio.stream FileImageInputStream readInt.

Prototype

public int readInt() throws IOException 

Source Link

Usage

From source file:de.hpi.fgis.hdrs.node.Index.java

void readMeta() throws IOException {
    File metaFile = new File(indexRoot.getAbsolutePath() + File.separator + METAFILE);
    if (!metaFile.isFile()) {
        throw new IOException("Index meta file not found for index " + order);
    }//www. j  a  v  a2s .c om
    segments.clear();
    FileImageInputStream in = new FileImageInputStream(metaFile);
    int size = in.readInt();
    for (int i = 0; i < size; ++i) {
        SegmentInfo info = SegmentInfo.read(in);
        segments.add(info);
    }
    in.close();
}

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From source file:de.hpi.fgis.hdrs.node.Node.java

boolean initialize() {
    // read segment id counter
    File storemeta = new File(rootDir.getAbsolutePath() + File.separator + SEGMENT_ID_COUNTER_FILE);
    if (storemeta.isFile()) {
        FileImageInputStream in;
        try {//from   ww  w. j av  a  2  s. c om
            in = new FileImageInputStream(storemeta);
            segmentIdCounter = in.readInt();
            in.close();
        } catch (IOException ex) {
            LOG.fatal("error while reading store meta file ", ex);
            return false;
        }
    }

    LOG.info("Using segment configuration: " + segmentConf);

    // init indexes
    for (Triple.COLLATION order : orders) {
        try {
            File indexRoot = new File(rootDir.getAbsolutePath() + File.separator + order);

            Index index;
            if (indexRoot.isDirectory()) {
                LOG.info("Opening index " + order);
                index = Index.openIndex(indexRoot, order, this);
            } else {
                LOG.info("Creating index " + order);
                index = Index.createIndex(indexRoot, order, this);
                if (router.getLocalPeer() == router.locateSegment(order, SegmentInfo.getSeed(0))) {
                    index.createSeedSegment();
                }
            }

            indexes.put(order, index);
            router.initialize(order);

        } catch (IOException ex) {
            LOG.fatal("error while opening index " + order, ex);
            return false;
        }
    }

    router.syncLocalCatalog();

    // create segment descriptors
    for (Index index : indexes.values()) {
        for (SegmentInfo info : router.getLocalCatalog().getSegments(index.getOrder())) {
            segments.put(Long.valueOf(info.getSegmentId()),
                    new SegmentDescriptor(SegmentStatus.OFFLINE, info, index));
        }
    }

    LOG.info("Segment catalog initialized: " + router.getLocalCatalog());
    return true;
}

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