Example usage for java.io DataInput readLong

Introduction

In this page you can find the example usage for java.io DataInput readLong.

Prototype

long readLong() throws IOException;

Source Link

Document

Reads eight input bytes and returns a long value.

Usage

From source file:org.apache.isis.objectstore.nosql.db.file.server.FileServer.java

private void syncConnection(final Socket connection, final int readTimeout) {
    try {/*from  w  w  w  .ja va 2s.co m*/
        final CRC32 crc32 = new CRC32();
        final DataOutput output = new DataOutputStream(connection.getOutputStream());
        final DataInput input = new DataInputStream(new CheckedInputStream(connection.getInputStream(), crc32));

        if (input.readByte() != INIT) {
            return;
        }

        final LogRange logFileRange = Util.logFileRange();
        final long lastId = logFileRange.noLogFile() ? -1 : logFileRange.getLast();
        output.writeLong(lastId);
        do {
            if (input.readByte() != RECOVERY_LOG) {
                return;
            }
            crc32.reset();
            final long logId = input.readLong();
            final File file = Util.tmpLogFile(logId);
            LOG.info("syncing recovery file: " + file.getName());
            final BufferedOutputStream fileOutput = new BufferedOutputStream(new FileOutputStream(file));

            final byte[] buffer = new byte[8092];
            int length;
            while ((length = input.readInt()) > 0) {
                input.readFully(buffer, 0, length);
                fileOutput.write(buffer, 0, length);
            }
            fileOutput.close();

            final long calculatedChecksum = crc32.getValue();
            final long sentChecksum = input.readLong();
            if (calculatedChecksum != sentChecksum) {
                throw new NoSqlStoreException("Checksum didn't match during download of " + file.getName());
            }

            recover(file);
            final File renameTo = Util.logFile(logId);
            file.renameTo(renameTo);
        } while (true);
    } catch (final NoSqlStoreException e) {
        LOG.error("file server failure", e);
    } catch (final IOException e) {
        LOG.error("networking failure", e);
    } catch (final RuntimeException e) {
        LOG.error("request failure", e);
    } finally {
        try {
            connection.close();
        } catch (final IOException e) {
            LOG.warn("failure to close connection", e);
        }
    }

    // TODO restart
}

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From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiUriResource serialized with writeURI and return it.
 *
 * @param input DataInput source//from w w w .  ja v  a  2s  .  c  om
 * @return a KiWiUriResource
 * @throws IOException
 */
public static KiWiUriResource readURI(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {

        int prefixMode = input.readByte();
        String uriPrefix = "";
        String uriSuffix = DataIO.readString(input);

        switch (prefixMode) {
        case PREFIX_XSD:
            uriPrefix = XSD.NAMESPACE;
            break;
        case PREFIX_RDF:
            uriPrefix = RDF.NAMESPACE;
            break;
        case PREFIX_RDFS:
            uriPrefix = RDFS.NAMESPACE;
            break;
        case PREFIX_SKOS:
            uriPrefix = SKOS.NAMESPACE;
            break;
        case PREFIX_DC:
            uriPrefix = DC.NAMESPACE;
            break;
        case PREFIX_DCT:
            uriPrefix = DCTERMS.NAMESPACE;
            break;
        case PREFIX_OWL:
            uriPrefix = OWL.NAMESPACE;
            break;
        case PREFIX_SCHEMA:
            uriPrefix = SCHEMA.NAMESPACE;
            break;
        case PREFIX_REDLINK:
            uriPrefix = NS_REDLINK;
            break;
        case PREFIX_DBPEDIA:
            uriPrefix = NS_DBPEDIA;
            break;
        case PREFIX_FREEBASE:
            uriPrefix = NS_FREEBASE;
            break;
        case PREFIX_LOCAL:
            uriPrefix = HTTP_LOCALHOST;
            break;
        default:
            uriPrefix = "";
            break;
        }

        Date created = new Date(input.readLong());

        KiWiUriResource r = new KiWiUriResource(uriPrefix + uriSuffix, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiAnonResource serialized with writeBNode from a DataInput source
 *
 * @param input the source/*from w w  w . j a  v  a 2s.co  m*/
 * @return the de-serialized KiWiAnonResource
 * @throws IOException
 */
public static KiWiAnonResource readBNode(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {
        String anonId = DataIO.readString(input);

        Date created = new Date(input.readLong());

        KiWiAnonResource r = new KiWiAnonResource(anonId, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiBooleanLiteral serialized with writeBooleanLiteral from a DataInput source
 *
 * @param input the source//from   w  w w.j  a va 2s.  co  m
 * @return the de-serialized KiWiBooleanLiteral
 * @throws IOException
 */
public static KiWiBooleanLiteral readBooleanLiteral(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {
        boolean content = input.readBoolean();

        KiWiUriResource dtype = readURI(input);

        Date created = new Date(input.readLong());

        KiWiBooleanLiteral r = new KiWiBooleanLiteral(content, dtype, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiDateLiteral serialized with writeDateLiteral from a DataInput source
 *
 * @param input the source/*from   ww w .j  av a  2s  . c  o m*/
 * @return the de-serialized KiWiDateLiteral
 * @throws IOException
 */
public static KiWiDateLiteral readDateLiteral(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {
        DateTime content = new DateTime(input.readLong(), DateTimeZone.forOffsetMillis(input.readInt()));

        KiWiUriResource dtype = readURI(input);

        Date created = new Date(input.readLong());

        KiWiDateLiteral r = new KiWiDateLiteral(content, dtype, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiDoubleLiteral serialized with writeDoubleLiteral from a DataInput source
 *
 * @param input the source/* ww w  .ja v  a2  s.  c om*/
 * @return the de-serialized KiWiDoubleLiteral
 * @throws IOException
 */
public static KiWiDoubleLiteral readDoubleLiteral(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {
        double content = input.readDouble();

        KiWiUriResource dtype = readURI(input);

        Date created = new Date(input.readLong());

        KiWiDoubleLiteral r = new KiWiDoubleLiteral(content, dtype, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiIntLiteral serialized with writeIntLiteral from a DataInput source
 *
 * @param input the source/*from ww w.  ja  v  a 2 s.co  m*/
 * @return the de-serialized KiWiIntLiteral
 * @throws IOException
 */
public static KiWiIntLiteral readIntLiteral(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {
        long content = input.readLong();

        KiWiUriResource dtype = readURI(input);

        Date created = new Date(input.readLong());

        KiWiIntLiteral r = new KiWiIntLiteral(content, dtype, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiStringLiteral serialized with writeStringLiteral from a DataInput source
 *
 * @param input the source//from   ww w  .jav  a 2s  .c  o  m
 * @return the de-serialized KiWiStringLiteral
 * @throws IOException
 */
public static KiWiStringLiteral readStringLiteral(DataInput input) throws IOException {
    long id = input.readLong();

    if (id == -1) {
        return null;
    } else {
        String content = readContent(input);
        byte langB = input.readByte();
        String lang;

        switch (langB) {
        case LANG_EN:
            lang = "en";
            break;
        case LANG_DE:
            lang = "de";
            break;
        case LANG_FR:
            lang = "fr";
            break;
        case LANG_ES:
            lang = "es";
            break;
        case LANG_IT:
            lang = "it";
            break;
        case LANG_PT:
            lang = "pt";
            break;
        case LANG_NL:
            lang = "nl";
            break;
        case LANG_SV:
            lang = "sv";
            break;
        case LANG_NO:
            lang = "no";
            break;
        case LANG_FI:
            lang = "fi";
            break;
        case LANG_RU:
            lang = "ru";
            break;
        case LANG_DK:
            lang = "dk";
            break;
        case LANG_PL:
            lang = "pl";
            break;
        default:
            lang = DataIO.readString(input);
        }

        KiWiUriResource dtype = readURI(input);

        Date created = new Date(input.readLong());

        KiWiStringLiteral r = new KiWiStringLiteral(content, lang != null ? Locale.forLanguageTag(lang) : null,
                dtype, created);
        r.setId(id);

        return r;
    }
}

---

From source file:org.apache.marmotta.kiwi.io.KiWiIO.java

/**
 * Read a KiWiTriple serialized with writeTriple from a DataInput source
 *
 * @param input the source//from   w  ww. j av a 2  s  . com
 * @return the de-serialized KiWiTriple
 * @throws IOException
 */
public static KiWiTriple readTriple(DataInput input) throws IOException {
    KiWiTriple result = new KiWiTriple();
    result.setId(input.readLong());

    int mode = input.readByte();
    if (mode == MODE_PREFIX) {
        String prefix = DataIO.readString(input);

        long sId = input.readLong();
        String sUri = prefix + DataIO.readString(input);
        long sTime = input.readLong();
        KiWiUriResource s = new KiWiUriResource(sUri);
        s.setId(sId);
        s.setCreated(new Date(sTime));
        result.setSubject(s);

        result.setPredicate(readURI(input));

        long oId = input.readLong();
        String oUri = prefix + DataIO.readString(input);
        long oTime = input.readLong();
        KiWiUriResource o = new KiWiUriResource(oUri);
        o.setId(oId);
        o.setCreated(new Date(oTime));
        result.setObject(o);

    } else {
        result.setSubject((KiWiResource) readNode(input));
        result.setPredicate(readURI(input));
        result.setObject(readNode(input));
    }
    result.setContext((KiWiResource) readNode(input));
    result.setCreator((KiWiResource) readNode(input));
    result.setDeleted(input.readBoolean());
    result.setInferred(input.readBoolean());
    result.setNewTriple(input.readBoolean());

    result.setCreated(new Date(input.readLong()));

    long deletedAt = input.readLong();
    if (deletedAt > 0) {
        result.setDeletedAt(new Date(deletedAt));
    }

    return result;

}

---

From source file:org.apache.nutch.crawl.CrawlDatum.java

public void readFields(DataInput in) throws IOException {
    byte version = in.readByte(); // read version
    if (version > CUR_VERSION) // check version
        throw new VersionMismatchException(CUR_VERSION, version);

    status = in.readByte();//from  w  w w  .  j  a v a  2s.c  o m
    fetchTime = in.readLong();
    retries = in.readByte();
    if (version > 5) {
        fetchInterval = in.readInt();
    } else
        fetchInterval = Math.round(in.readFloat());
    score = in.readFloat();
    if (version > 2) {
        modifiedTime = in.readLong();
        int cnt = in.readByte();
        if (cnt > 0) {
            signature = new byte[cnt];
            in.readFully(signature);
        } else
            signature = null;
    }

    if (version > 3) {
        boolean hasMetadata = false;
        if (version < 7) {
            org.apache.hadoop.io.MapWritable oldMetaData = new org.apache.hadoop.io.MapWritable();
            if (in.readBoolean()) {
                hasMetadata = true;
                metaData = new org.apache.hadoop.io.MapWritable();
                oldMetaData.readFields(in);
            }
            for (Writable key : oldMetaData.keySet()) {
                metaData.put(key, oldMetaData.get(key));
            }
        } else {
            if (in.readBoolean()) {
                hasMetadata = true;
                metaData = new org.apache.hadoop.io.MapWritable();
                metaData.readFields(in);
            }
        }
        if (hasMetadata == false)
            metaData = null;
    }
    // translate status codes
    if (version < 5) {
        if (oldToNew.containsKey(status))
            status = oldToNew.get(status);
        else
            status = STATUS_DB_UNFETCHED;

    }
}

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