Example usage for org.apache.hadoop.io WritableComparator readLong

Introduction

In this page you can find the example usage for org.apache.hadoop.io WritableComparator readLong.

Prototype

public static long readLong(byte[] bytes, int start) 

Source Link

Document

Parse a long from a byte array.

Usage

From source file:com.asakusafw.runtime.value.ByteArrayUtil.java

License:Apache License

static long readLong(byte[] bytes, int offset) {
    return WritableComparator.readLong(bytes, offset);
}

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From source file:com.ibm.bi.dml.runtime.matrix.data.MatrixIndexes.java

License:Open Source License

@Override
public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
    //compare row
    long v1 = WritableComparator.readLong(b1, s1);
    long v2 = WritableComparator.readLong(b2, s2);
    if (v1 != v2)
        return v1 < v2 ? -1 : 1;
    //compare column (if needed)
    v1 = WritableComparator.readLong(b1, s1 + Long.SIZE / 8);
    v2 = WritableComparator.readLong(b2, s2 + Long.SIZE / 8);
    return (v1 < v2 ? -1 : (v1 == v2 ? 0 : 1));
}

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From source file:com.netflix.aegisthus.io.writable.AegisthusKey.java

License:Apache License

/**
 * Zero copy readFields.//from w  w  w  . j a va 2 s  .  c o  m
 * Note: As defensive copying is not done, caller should not mutate b1 while using instance.
 * */
public void readFields(byte[] bytes, int start, int length) {
    int pos = start; // start at the input position
    int keyLength = WritableComparator.readInt(bytes, pos);
    pos += 4; // move forward by the int that held the key length
    this.key = ByteBuffer.wrap(bytes, pos, keyLength);
    pos += keyLength; // move forward by the key length

    if (bytes[pos] == 0) {
        pos += 1; // move forward by a boolean
        this.name = null;
    } else {
        pos += 1; // move forward by a boolean
        int nameLength = WritableComparator.readInt(bytes, pos);
        pos += 4; // move forward by an int that held the name length
        this.name = ByteBuffer.wrap(bytes, pos, nameLength);
        pos += nameLength; // move forward by the name length
    }

    if (bytes[pos] == 0) {
        // pos += 1; // move forward by a boolean
        this.timestamp = null;
    } else {
        pos += 1; // move forward by a boolean
        this.timestamp = WritableComparator.readLong(bytes, pos);
        // pos += 8; // move forward by a long
    }
}

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