Example usage for org.apache.hadoop.io BooleanWritable BooleanWritable

Introduction

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

Prototype

public BooleanWritable(boolean value)

Source Link

Usage

From source file:org.apache.giraph.aggregators.TestBooleanAggregators.java

License:Apache License

@Test
public void testAndAggregator() {
    BooleanAndAggregator and = new BooleanAndAggregator();
    assertEquals(true, and.getAggregatedValue().get());
    and.aggregate(new BooleanWritable(true));
    assertEquals(true, and.getAggregatedValue().get());
    and.aggregate(new BooleanWritable(false));
    assertEquals(false, and.getAggregatedValue().get());
    and.setAggregatedValue(new BooleanWritable(true));
    assertEquals(true, and.getAggregatedValue().get());
    BooleanWritable bw = and.createInitialValue();
    assertNotNull(bw);/*from   w w w .j ava  2  s  .c  om*/
}

From source file:org.apache.giraph.aggregators.TestBooleanAggregators.java

License:Apache License

@Test
public void testOrAggregator() {
    BooleanOrAggregator or = new BooleanOrAggregator();
    assertEquals(false, or.getAggregatedValue().get());
    or.aggregate(new BooleanWritable(false));
    assertEquals(false, or.getAggregatedValue().get());
    or.aggregate(new BooleanWritable(true));
    assertEquals(true, or.getAggregatedValue().get());
    or.setAggregatedValue(new BooleanWritable(false));
    assertEquals(false, or.getAggregatedValue().get());
    BooleanWritable bw = or.createInitialValue();
    assertNotNull(bw);/*from   ww  w.ja  v a  2s  . c  o m*/
}

From source file:org.apache.giraph.aggregators.TestBooleanAggregators.java

License:Apache License

@Test
public void testOverwriteAggregator() {
    BooleanOverwriteAggregator overwrite = new BooleanOverwriteAggregator();
    overwrite.aggregate(new BooleanWritable(true));
    assertEquals(true, overwrite.getAggregatedValue().get());
    overwrite.aggregate(new BooleanWritable(false));
    assertEquals(false, overwrite.getAggregatedValue().get());
    overwrite.setAggregatedValue(new BooleanWritable(true));
    assertEquals(true, overwrite.getAggregatedValue().get());
    BooleanWritable bw = overwrite.createInitialValue();
    assertNotNull(bw);/* w w w  .  j ava  2  s.  co m*/
}

From source file:org.apache.giraph.block_app.library.algo.DistributedIndependentSet.java

License:Apache License

/**
 * Piece to confirm selection of some vertices for the independent set. Also,
 * changes the state of neighboring vertices of newly assigned vertices to
 * NOT_IN_SET, so not to consider them for the discovery of the current
 * independent set./*w ww. j av  a2  s .c o m*/
 *
 * @param foundMIS Specifies the end of discovery for current independent set.
 * @param done Specifies the end of whole computation of decomposing to
 *             independent sets.
 */
private static <I extends WritableComparable, V extends Writable> Block createSelectAndRefinePiece(
        SupplierFromVertex<I, V, Writable, IntWritable> getIndependentSet,
        ConsumerWithVertex<I, V, Writable, IntWritable> setIndependentSet, IntRef iteration,
        Consumer<Boolean> foundMIS, Consumer<Boolean> done) {
    return new Piece<I, V, Writable, BooleanWritable, Object>() {
        private ReducerHandle<IntWritable, IntWritable> numVerticesUnknown;
        private ReducerHandle<IntWritable, IntWritable> numVerticesNotAssigned;

        @Override
        public void registerReducers(CreateReducersApi reduceApi, Object executionStage) {
            numVerticesUnknown = reduceApi.createLocalReducer(SumReduce.INT);
            numVerticesNotAssigned = reduceApi.createLocalReducer(SumReduce.INT);
        }

        @Override
        public VertexSender<I, V, Writable> getVertexSender(
                final BlockWorkerSendApi<I, V, Writable, BooleanWritable> workerApi, Object executionStage) {
            BooleanWritable ack = new BooleanWritable(true);
            IntWritable one = new IntWritable(1);
            return (vertex) -> {
                IntWritable vertexState = getIndependentSet.get(vertex);
                if (vertexState.equals(IN_SET)) {
                    setIndependentSet.apply(vertex, new IntWritable(iteration.value));
                    workerApi.sendMessageToAllEdges(vertex, ack);
                } else if (vertexState.equals(UNKNOWN)) {
                    numVerticesUnknown.reduce(one);
                    numVerticesNotAssigned.reduce(one);
                } else if (vertexState.equals(NOT_IN_SET)) {
                    numVerticesNotAssigned.reduce(one);
                }
            };
        }

        @Override
        public void masterCompute(BlockMasterApi master, Object executionStage) {
            done.apply(numVerticesNotAssigned.getReducedValue(master).get() == 0);
            foundMIS.apply(numVerticesUnknown.getReducedValue(master).get() == 0);
        }

        @Override
        public VertexReceiver<I, V, Writable, BooleanWritable> getVertexReceiver(
                final BlockWorkerReceiveApi<I> workerApi, Object executionStage) {
            return (vertex, messages) -> {
                if (getIndependentSet.get(vertex).equals(UNKNOWN) && Iterables.size(messages) > 0) {
                    setIndependentSet.apply(vertex, NOT_IN_SET);
                }
            };
        }

        @Override
        public Class<BooleanWritable> getMessageClass() {
            return BooleanWritable.class;
        }

        @Override
        public String toString() {
            return "SelectAndRefinePiece";
        }
    };
}

From source file:org.apache.giraph.examples.scc.SccAsyncComputation.java

License:Apache License

/**
 * Traverse the graph through outgoing edges and keep the maximum vertex
 * value.//from   w w  w.ja  v  a  2  s  . c  o  m
 * If a new maximum value is found, propagate it until convergence.
 * @param vertex Current vertex.
 * @param messages Received values from neighbor vertices.
 */
private void forwardTraversal(Vertex<LongWritable, SccVertexValue, NullWritable> vertex,
        Iterable<LongWritable> messages) {
    SccVertexValue vertexValue = vertex.getValue();
    boolean changed = setMaxValue(vertexValue, messages);
    if (changed) {
        messageValue.set(vertexValue.get());
        sendMessageToAllEdges(vertex, messageValue);
        aggregate(NEW_MAXIMUM, new BooleanWritable(true));
    }
}

From source file:org.apache.giraph.examples.scc.SccAsyncComputation.java

License:Apache License

/**
 * Traverse the transposed graph and keep the maximum vertex value.
 * @param vertex Current vertex./*from   ww w .j a  v a 2  s  . c  om*/
 * @param messages Received values from children vertices.
 */
private void backwardTraversalRest(Vertex<LongWritable, SccVertexValue, NullWritable> vertex,
        Iterable<LongWritable> messages) {
    SccVertexValue vertexValue = vertex.getValue();
    for (LongWritable m : messages) {
        if (vertexValue.get() == m.get()) {
            sendMessageToAllParents(vertex, m);
            aggregate(CONVERGED, new BooleanWritable(true));
            vertexValue.deactivate();
            vertex.voteToHalt();
            break;
        }
    }
}

From source file:org.apache.giraph.types.ops.BooleanTypeOps.java

License:Apache License

@Override
public BooleanWritable createCopy(BooleanWritable from) {
    return new BooleanWritable(from.get());
}

From source file:org.apache.hawq.pxf.plugins.hdfs.utilities.RecordkeyAdapter.java

License:Apache License

private ValConverter initializeConverter(Object key) {

    if (key instanceof Integer) {
        return new ValConverter() {
            @Override/*  w w  w .j  a v  a 2s .co m*/
            public Writable get(Object key) {
                return (new IntWritable((Integer) key));
            }
        };
    } else if (key instanceof Byte) {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                return (new ByteWritable((Byte) key));
            }
        };
    } else if (key instanceof Boolean) {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                return (new BooleanWritable((Boolean) key));
            }
        };
    } else if (key instanceof Double) {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                return (new DoubleWritable((Double) key));
            }
        };
    } else if (key instanceof Float) {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                return (new FloatWritable((Float) key));
            }
        };
    } else if (key instanceof Long) {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                return (new LongWritable((Long) key));
            }
        };
    } else if (key instanceof String) {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                return (new Text((String) key));
            }
        };
    } else {
        return new ValConverter() {
            @Override
            public Writable get(Object key) {
                throw new UnsupportedOperationException(
                        "Unsupported recordkey data type " + key.getClass().getName());
            }
        };
    }
}

From source file:org.apache.hawq.pxf.plugins.hdfs.utilities.RecordkeyAdapterTest.java

License:Apache License

/**
 * Test convertKeyValue for Boolean type
 *//*from  w  w  w . ja  va  2s. co m*/
@Test
public void convertKeyValueBoolean() {
    boolean key = true;
    initRecordkeyAdapter();
    runConvertKeyValue(key, new BooleanWritable(key));
}

From source file:org.apache.hawq.pxf.plugins.hdfs.utilities.RecordkeyAdapterTest.java

License:Apache License

/**
 * Test convertKeyValue for several calls of the same type
 *///  www.j av a  2 s.c om
@Test
public void convertKeyValueManyCalls() {
    Boolean key = true;
    mockLog();
    initRecordkeyAdapter();
    runConvertKeyValue(key, new BooleanWritable(key));
    verifyLog("converter initialized for type " + key.getClass() + " (key value: " + key + ")");

    for (int i = 0; i < 5; ++i) {
        key = (i % 2) == 0;
        runConvertKeyValue(key, new BooleanWritable(key));
    }
    verifyLogOnlyOnce();
}