Examples of Writable

groovy.lang.Writable

Represents an object which is capable of writing itself to a text stream in a more efficient format than just creating a toString() representation of itself. This mechanism is particularly useful for templates and such like.

It is worth noting that writable implementations often override their toString() implementation as well to allow rendering the same result directly to a String; however this is not required.
@author James Strachan @version $Revision: 18909 $
net.nutch.io.Writable
A simple, efficient, serialization protocol, based on {@link DataInput} and{@link DataOutput}.
Implementations typically implement a static read(DataInput) method which constructs a new instance, calls {@link #readFields(DataInput)}, and returns the instance. @author Doug Cutting
org.apache.hadoop.io.Writable
A simple, efficient, serialization protocol, based on {@link DataInput} and{@link DataOutput}.
Implementations typically implement a static read(DataInput) method which constructs a new instance, calls {@link #readFields(DataInput)}, and returns the instance.
org.apache.nutch.io.Writable
A simple, efficient, serialization protocol, based on {@link DataInput} and{@link DataOutput}.
Implementations typically implement a static read(DataInput) method which constructs a new instance, calls {@link #readFields(DataInput)}, and returns the instance. @author Doug Cutting
org.jakstab.rtl.expressions.Writable
An interface for expressions that can be the left hand side of an assignment. @author Johannes Kinder

Examples of org.apache.hadoop.io.Writable


        try {
            Iterator<Entry<Writable, Writable>> i = entrySet().iterator();
            while (i.hasNext()) {
                Entry<Writable, Writable> e = i.next();
                Writable key = e.getKey();
                Writable value = e.getValue();
                if (value == null) {
                    if (!(m.get(key) == null && m.containsKey(key)))
                        return false;
                }
                else {
                    if (!value.equals(m.get(key)))
                        return false;
                }
            }
        } catch (ClassCastException unused) {
            return false;

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Examples of org.apache.hadoop.io.Writable


        StringBuilder sb = new StringBuilder();
        sb.append('{');
        for (;;) {
            Entry<Writable, Writable> e = i.next();
            Writable key = e.getKey();
            Writable value = e.getValue();
            sb.append(key == this ? "(this Map)" : key);
            sb.append('=');
            if (value instanceof ArrayWritable) {
                sb.append(Arrays.toString(((ArrayWritable) value).get()));
            }

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Examples of org.apache.hadoop.io.Writable

    
    FileSystem outputFS = getFileSystem();
    Path outputPath = new Path(outputFS.getHomeDirectory(), "output/part-r-00000");
    Configuration conf = new Configuration();
    SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
    Writable writableKey = (Writable)
    ReflectionUtils.newInstance(reader.getKeyClass(), conf);
    Writable writableValue = (Writable)
    ReflectionUtils.newInstance(reader.getValueClass(), conf);
    List<Text> expectedOutput = new ArrayList<Text>();
    expectedOutput.add(new Text("Xavier Wilson,Mason Holloway,Carlos Johnston,Martin Noel,Drake Mckinney"));
    expectedOutput.add(new Text("Kennedy Bailey,Jerome Perry,David Cabrera,Edan Fleming,Orlando Tyson"));
    expectedOutput.add(new Text("Drake Mckinney,Murphy Baird,Theodore Lindsey,Nehru Wilcox,Harper Klein"));

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Examples of org.apache.hadoop.io.Writable

    
    FileSystem outputFS = getFileSystem();
    Path outputPath = new Path(outputFS.getHomeDirectory(), "output/part-r-00000");
    Configuration conf = new Configuration();
    SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
    Writable writableKey = (Writable)
    ReflectionUtils.newInstance(reader.getKeyClass(), conf);
    Writable writableValue = (Writable)
    ReflectionUtils.newInstance(reader.getValueClass(), conf);
    List<LongWritable> expectedOutput = new ArrayList<LongWritable>();
    expectedOutput.add(new LongWritable(1));
    expectedOutput.add(new LongWritable(2));
    expectedOutput.add(new LongWritable(3));

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Examples of org.apache.hadoop.io.Writable

    
      FileSystem outputFS = getFileSystem();
      Path outputPath = new Path(outputFS.getHomeDirectory(), "output/part-r-00000");
      Configuration conf = new Configuration();
      SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
      Writable writableKey = (Writable)
      ReflectionUtils.newInstance(reader.getKeyClass(), conf);
      Writable writableValue = (Writable)
      ReflectionUtils.newInstance(reader.getValueClass(), conf);
      List<Student> expectedOutput = new ArrayList<Student>();
      expectedOutput.add(student1);
      expectedOutput.add(student2);
      expectedOutput.add(student3);

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Examples of org.apache.hadoop.io.Writable

    
    FileSystem outputFS = getFileSystem();
    Path outputPath = new Path(outputFS.getHomeDirectory(), "outputOfNGramJob/part-r-00000");
    Configuration conf = new Configuration();
    SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
    Writable writableKey = (Writable)
    ReflectionUtils.newInstance(reader.getKeyClass(), conf);
    Writable writableValue = (Writable)
    ReflectionUtils.newInstance(reader.getValueClass(), conf);
    
    List<IntWritable> expectedOutputForValue = new ArrayList<IntWritable>();
    expectedOutputForValue.add(new IntWritable(1));
    expectedOutputForValue.add(new IntWritable(1));

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Examples of org.apache.hadoop.io.Writable

    
    FileSystem outputFS = getFileSystem();
    Path outputPath = new Path(outputFS.getHomeDirectory(), "outputOfScoreJob/part-r-00000");
    Configuration conf = new Configuration();
    SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
    Writable writableKey = (Writable)
    ReflectionUtils.newInstance(reader.getKeyClass(), conf);
    Writable writableValue = (Writable)
    ReflectionUtils.newInstance(reader.getValueClass(), conf);
    
    List<ValuePair> expectedOutputForKey = new ArrayList<ValuePair>();
    ValuePair valuePair = new ValuePair();
    valuePair.setValue1(new Text("This is a bookdelimiterBetweenKeyAndValuevalue1"));

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Examples of org.apache.hadoop.io.Writable

    
    FileSystem outputFS = getFileSystem();
    Path outputPath = new Path(outputFS.getHomeDirectory(), "outputOfScoreJob/part-r-00000");
    Configuration conf = new Configuration();
    SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
    Writable writableKey = (Writable)
    ReflectionUtils.newInstance(reader.getKeyClass(), conf);
    Writable writableValue = (Writable)
    ReflectionUtils.newInstance(reader.getValueClass(), conf);
    
    List<ValuePair> expectedOutputForKey = new ArrayList<ValuePair>();
    expectedOutputForKey.add(valuePair);

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Examples of org.apache.hadoop.io.Writable

    
      FileSystem outputFS = getFileSystem();
      Path outputPath = new Path(outputFS.getHomeDirectory(), "output/part-r-00000");
      Configuration conf = new Configuration();
      SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
      Writable writableKey = (Writable)
      ReflectionUtils.newInstance(reader.getKeyClass(), conf);
      Writable writableValue = (Writable)
      ReflectionUtils.newInstance(reader.getValueClass(), conf);
      List<Student> expectedOutput = new ArrayList<Student>();
      expectedOutput.add(student1);
      expectedOutput.add(student2);
      expectedOutput.add(student3);

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Examples of org.apache.hadoop.io.Writable

    
          FileSystem outputFS = getFileSystem();
          Path outputPath = new Path(outputFS.getHomeDirectory(), "output/part-r-00000");
          Configuration conf = new Configuration();
          SequenceFile.Reader reader = new SequenceFile.Reader(outputFS, outputPath, conf);
          Writable writableKey = (Writable)
          ReflectionUtils.newInstance(reader.getKeyClass(), conf);
          Writable writableValue = (Writable)
          ReflectionUtils.newInstance(reader.getValueClass(), conf);
          List<IntWritable> expectedOutput = new ArrayList<IntWritable>();
          expectedOutput.add(new IntWritable(1));
          expectedOutput.add(new IntWritable(2));
          expectedOutput.add(new IntWritable(3));

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