Example usage for java.io DataOutput writeLong

Introduction

In this page you can find the example usage for java.io DataOutput writeLong.

Prototype

void writeLong(long v) throws IOException;

Source Link

Document

Writes a long value, which is comprised of eight bytes, to the output stream.

Usage

From source file:net.geertvos.theater.core.util.UUIDGen.java

/** writes a uuid to an output stream. */
public static void write(UUID uuid, DataOutput dos) throws IOException {
    dos.writeLong(uuid.getMostSignificantBits());
    dos.writeLong(uuid.getLeastSignificantBits());
}

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From source file:org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.java

/**
 * Serialize a {@link INodeSymlink} node
 * @param node The node to write// www .j  a v  a 2  s .com
 * @param out The {@link DataOutput} where the fields are written
 */
private static void writeINodeSymlink(INodeSymlink node, DataOutput out) throws IOException {
    writeLocalName(node, out);
    out.writeLong(node.getId());
    out.writeShort(0); // replication
    out.writeLong(0); // modification time
    out.writeLong(0); // access time
    out.writeLong(0); // preferred block size
    out.writeInt(-2); // # of blocks

    Text.writeString(out, node.getSymlinkString());
    writePermissionStatus(node, out);
    out.writeLong(0); // access count IDecider
    out.writeInt(0); // is cached flag IDecider
}

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From source file:org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.java

/**
 * Serialize a {@link INodeDirectory}//from  ww w .j  ava 2 s  .c  o m
 * @param node The node to write
 * @param out The {@link DataOutput} where the fields are written 
 */
public static void writeINodeDirectory(INodeDirectory node, DataOutput out) throws IOException {
    writeLocalName(node, out);
    out.writeLong(node.getId());
    out.writeShort(0); // replication
    out.writeLong(node.getModificationTime());
    out.writeLong(0); // access time
    out.writeLong(0); // preferred block size
    out.writeInt(-1); // # of blocks

    out.writeLong(node.getNsQuota());
    out.writeLong(node.getDsQuota());
    if (node instanceof INodeDirectorySnapshottable) {
        out.writeBoolean(true);
    } else {
        out.writeBoolean(false);
        out.writeBoolean(node instanceof INodeDirectoryWithSnapshot);
    }

    writePermissionStatus(node, out);
    /*out.writeLong(0);   access count IDecider
    out.writeInt(0);   is cached flag IDecider*/
}

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From source file:org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.java

/**
 * Serialize a {@link INodeDirectory}//w w w .j a  va2  s .  c  om
 * @param a The node to write
 * @param out The {@link DataOutput} where the fields are written 
 */
public static void writeINodeDirectoryAttributes(INodeDirectoryAttributes a, DataOutput out)
        throws IOException {
    writeLocalName(a, out);
    writePermissionStatus(a, out);
    out.writeLong(a.getModificationTime());

    out.writeLong(a.getNsQuota());
    out.writeLong(a.getDsQuota());
}

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From source file:org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.java

/** Serialize a {@link INodeReference} node */
private static void writeINodeReference(INodeReference ref, DataOutput out, boolean writeUnderConstruction,
        ReferenceMap referenceMap) throws IOException {
    writeLocalName(ref, out);/*from  w w  w .  j  a v a  2 s .c om*/
    out.writeLong(ref.getId());
    out.writeShort(0); // replication
    out.writeLong(0); // modification time
    out.writeLong(0); // access time
    out.writeLong(0); // preferred block size
    out.writeInt(-3); // # of blocks

    final boolean isWithName = ref instanceof INodeReference.WithName;
    out.writeBoolean(isWithName);

    if (!isWithName) {
        Preconditions.checkState(ref instanceof INodeReference.DstReference);
        // dst snapshot id
        out.writeInt(((INodeReference.DstReference) ref).getDstSnapshotId());
    } else {
        out.writeInt(((INodeReference.WithName) ref).getLastSnapshotId());
    }

    final INodeReference.WithCount withCount = (INodeReference.WithCount) ref.getReferredINode();
    referenceMap.writeINodeReferenceWithCount(withCount, out, writeUnderConstruction);
    out.writeLong(0); // access count IDecider
    out.writeInt(0); // is cached flag IDecider
}

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

/**
 * Efficiently serialize a KiWiTriple to a DataOutput destination.
 *
 * @param output the destination//from  ww  w  .  jav a 2  s .  com
 * @param triple the KiWiTriple to serialize
 * @throws IOException
 */
public static void writeTriple(DataOutput output, KiWiTriple triple) throws IOException {
    output.writeLong(triple.getId());

    // in case subject and object are both uris we use a special prefix-compressed mode
    if (triple.getSubject().isUriResource() && triple.getObject().isUriResource()) {
        String sUri = triple.getSubject().stringValue();
        String oUri = triple.getObject().stringValue();

        String prefix = StringUtils.getCommonPrefix(sUri, oUri);

        output.writeByte(MODE_PREFIX);
        DataIO.writeString(output, prefix);

        output.writeLong(triple.getSubject().getId());
        DataIO.writeString(output, sUri.substring(prefix.length()));
        output.writeLong(triple.getSubject().getCreated().getTime());

        writeURI(output, triple.getPredicate());

        output.writeLong(triple.getObject().getId());
        DataIO.writeString(output, oUri.substring(prefix.length()));
        output.writeLong(triple.getObject().getCreated().getTime());
    } else {
        output.writeByte(MODE_DEFAULT);

        writeNode(output, triple.getSubject());
        writeURI(output, triple.getPredicate());
        writeNode(output, triple.getObject());

    }

    writeNode(output, triple.getContext());
    writeNode(output, triple.getCreator());
    output.writeBoolean(triple.isDeleted());
    output.writeBoolean(triple.isInferred());
    output.writeBoolean(triple.isNewTriple());
    output.writeLong(triple.getCreated().getTime());
    if (triple.getDeletedAt() != null) {
        output.writeLong(triple.getDeletedAt().getTime());
    } else {
        output.writeLong(0);
    }
}

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

/**
 * Efficiently serialize a KiWiAnonResource to a DataOutput destination.
 *
 * @param out the destination//w  ww .  j  av  a2  s  .com
 * @param bnode the KiWiAnonResource to serialize
 * @throws IOException
 */
public static void writeBNode(DataOutput out, KiWiAnonResource bnode) throws IOException {
    if (bnode == null) {
        out.writeLong(-1L);
    } else {
        out.writeLong(bnode.getId());
        DataIO.writeString(out, bnode.stringValue());
        out.writeLong(bnode.getCreated().getTime());
    }
}

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

/**
 * Efficiently serialize a KiWiIntLiteral to a DataOutput destination.
 *
 * @param out the destination/*from   w ww  .j a  v a  2  s . co m*/
 * @param literal the KiWiIntLiteral to serialize
 * @throws IOException
 */
public static void writeIntLiteral(DataOutput out, KiWiIntLiteral literal) throws IOException {
    if (literal == null) {
        out.writeLong(-1L);
    } else {
        out.writeLong(literal.getId());
        out.writeLong(literal.getIntContent());
        writeURI(out, literal.getType());
        out.writeLong(literal.getCreated().getTime());
    }
}

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

/**
 * Efficiently serialize a KiWiDateLiteral to a DataOutput destination.
 *
 * @param out the destination//from w  ww  .  ja  va 2  s  . co m
 * @param literal the KiWiDateLiteral to serialize
 * @throws IOException
 */
public static void writeDateLiteral(DataOutput out, KiWiDateLiteral literal) throws IOException {
    if (literal == null) {
        out.writeLong(-1L);
    } else {
        out.writeLong(literal.getId());
        out.writeLong(literal.getDateContent().getMillis());
        out.writeInt(literal.getDateContent().getZone().getOffset(literal.getDateContent()));
        writeURI(out, literal.getType());
        out.writeLong(literal.getCreated().getTime());
    }
}

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

/**
 * Efficiently serialize a KiWiDoubleLiteral to a DataOutput destination.
 *
 * @param out the destination//  w  w w  .jav  a2s.c  o  m
 * @param literal the KiWiDoubleLiteral to serialize
 * @throws IOException
 */
public static void writeDoubleLiteral(DataOutput out, KiWiDoubleLiteral literal) throws IOException {
    if (literal == null) {
        out.writeLong(-1L);
    } else {
        out.writeLong(literal.getId());
        out.writeDouble(literal.getDoubleContent());
        writeURI(out, literal.getType());
        out.writeLong(literal.getCreated().getTime());
    }
}

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