Examples of org.apache.hadoop.hbase.io.ImmutableBytesWritable

org.apache.hadoop.hbase.io.ImmutableBytesWritable
A byte sequence that is usable as a key or value. Based on {@link org.apache.hadoop.io.BytesWritable} only this class is NOT resizableand DOES NOT distinguish between the size of the seqeunce and the current capacity as {@link org.apache.hadoop.io.BytesWritable} does. Hence itscomparatively 'immutable'. When creating a new instance of this class, the underlying byte [] is not copied, just referenced. The backing buffer is accessed when we go to serialize.

   * @param key The key.
   * @return The value.
   * @see #values
   */
  public byte[] getValue(byte[] key) {
    return getValue(new ImmutableBytesWritable(key));
  }

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  public byte[] getValue(byte[] key) {
    return getValue(new ImmutableBytesWritable(key));
  }


  private byte[] getValue(final ImmutableBytesWritable key) {
    ImmutableBytesWritable ibw = values.get(key);
    if (ibw == null)
      return null;
    return ibw.get();
  }

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   * @param key The key.
   * @param value The value.
   * @see #values
   */
  public void setValue(byte[] key, byte[] value) {
    setValue(new ImmutableBytesWritable(key), value);
  }

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   * @param key The key.
   * @param value The value.
   */
  private void setValue(final ImmutableBytesWritable key,
      final byte[] value) {
    values.put(key, new ImmutableBytesWritable(value));
  }

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   * 
   * @param key Key whose key and value we're to remove from HTableDescriptor
   * parameters.
   */
  public void remove(final byte [] key) {
    values.remove(new ImmutableBytesWritable(key));
  }

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    setRootRegion(in.readBoolean());
    setMetaRegion(in.readBoolean());
    values.clear();
    int numVals = in.readInt();
    for (int i = 0; i < numVals; i++) {
      ImmutableBytesWritable key = new ImmutableBytesWritable();
      ImmutableBytesWritable value = new ImmutableBytesWritable();
      key.readFields(in);
      value.readFields(in);
      values.put(key, value);
    }
    families.clear();
    int numFamilies = in.readInt();
    for (int i = 0; i < numFamilies; i++) {

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  /**
   * Remove a coprocessor from those set on the table
   * @param className Class name of the co-processor
   */
  public void removeCoprocessor(String className) {
    ImmutableBytesWritable match = null;
    Matcher keyMatcher;
    Matcher valueMatcher;
    for (Map.Entry<ImmutableBytesWritable, ImmutableBytesWritable> e : this.values
        .entrySet()) {
      keyMatcher = HConstants.CP_HTD_ATTR_KEY_PATTERN.matcher(Bytes.toString(e

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  /**
   * @param key The key.
   * @return The value.
   */
  public byte[] getValue(byte[] key) {
    ImmutableBytesWritable ibw = values.get(new ImmutableBytesWritable(key));
    if (ibw == null)
      return null;
    return ibw.get();
  }

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   * @param key The key.
   * @param value The value.
   * @return this (for chained invocation)
   */
  public HColumnDescriptor setValue(byte[] key, byte[] value) {
    values.put(new ImmutableBytesWritable(key),
      new ImmutableBytesWritable(value));
    return this;
  }

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  /**
   * @param key Key whose key and value we're to remove from HCD parameters.
   */
  public void remove(final byte [] key) {
    values.remove(new ImmutableBytesWritable(key));
  }

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