Examples of IdGeneratorImpl

org.lilyproject.repository.impl.id.IdGeneratorImpl
org.neo4j.kernel.impl.nioneo.store.IdGeneratorImpl
This class generates unique ids for a resource type. For example, nodes in a nodes space are connected to each other via relationships. On nodes and relationship one can add properties. We have three different resource types here (nodes, relationships and properties) where each resource needs a unique id to be able to differ resources of the same type from each other. Creating three id generators (one for each resource type ) will do the trick.
IdGenerator makes use of so called "defragged" ids. A defragged id is an id that has been in use one or many times but the resource that was using it doesn't exist anymore. This makes it possible to reuse the id and that in turn makes it possible to write a resource store with fixed records and size (you can calculate the position of a record by knowing the id without using indexes or a translation table).
The id returned from {@link #nextId} may not be the lowestavailable id but will be one of the defragged ids if such exist or the next new free id that has never been used.
The {@link #freeId} will not check if the id passed in to it really is free.Passing a non free id will corrupt the id generator and {@link #nextId}method will eventually return that id.
The {@link #close()} method must always be invoked when done using angenerator (for this time). Failure to do will render the generator as "sticky" and unusable next time you try to initialize a generator using the same file. There can only be one id generator instance per id generator file.
In case of disk/file I/O failure an IOException is thrown.
org.waveprotocol.wave.model.id.IdGeneratorImpl
This class is used to generate Wave and Wavelet ids. The id field is structured as a sequence of '+'-separated tokens. The id field is case sensitive. A wavelet is hosted by a single wave service provider, which may differ from the service provider which allocated the wave id. Common examples are private replies and user-data wavelets for users from a federated domain. Thus, the service provider specified in a wavelet id may differ from the service provider of the wave to which it belongs. @author zdwang@google.com (David Wang)

Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

import static org.mockito.Mockito.when;


public class FieldValueStringConverterTest {
    @Test
    public void testFromString() throws Exception {
        IdGenerator idGenerator = new IdGeneratorImpl();


        ValueType valueType = mock(ValueType.class);


        when(valueType.getBaseName()).thenReturn("STRING");
        assertEquals("foo", FieldValueStringConverter.fromString("foo", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("INTEGER");
        assertEquals(new Integer(123), FieldValueStringConverter.fromString("123", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("LONG");
        assertEquals(new Long(12345), FieldValueStringConverter.fromString("12345", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("DOUBLE");
        assertEquals(new Double(12345.6), FieldValueStringConverter.fromString("12345.6", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("DECIMAL");
        assertEquals(new BigDecimal("12345.12345"), FieldValueStringConverter.fromString("12345.12345", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("URI");
        assertEquals(new URI("http://www.ngdata.com/"),
                FieldValueStringConverter.fromString("http://www.ngdata.com/", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("BOOLEAN");
        assertEquals(Boolean.TRUE, FieldValueStringConverter.fromString("true", valueType, idGenerator));
        assertEquals(Boolean.FALSE, FieldValueStringConverter.fromString("false", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("LINK");
        assertEquals(new Link(idGenerator.newRecordId("foobar")),
                FieldValueStringConverter.fromString("USER.foobar", valueType, idGenerator));


        when(valueType.getBaseName()).thenReturn("DATE");
        assertEquals(new LocalDate(2012, 6, 28), FieldValueStringConverter.fromString("2012-06-28", valueType, idGenerator));

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl


    private IdGenerator idGenerator;


    @Before
    public void setUp() {
        this.idGenerator = new IdGeneratorImpl();
    }

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

import static org.junit.Assert.assertTrue;


public class RecordIdWritableTest {
    @Test
    public void testComparisons() throws Exception {
        IdGenerator idGenerator = new IdGeneratorImpl();


        RecordIdWritable writable1 = new RecordIdWritable();
        RecordIdWritable writable2 = new RecordIdWritable();


        writable1.setRecordId(idGenerator.newRecordId("b"));
        writable2.setRecordId(idGenerator.newRecordId("b"));
        assertTrue(writable1.compareTo(writable2) == 0);


        writable2.setRecordId(idGenerator.newRecordId("c"));
        assertTrue(writable1.compareTo(writable2) < 0);


        writable2.setRecordId(idGenerator.newRecordId("a"));
        assertTrue(writable1.compareTo(writable2) > 0);


    }

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl


    }


    @Test
    public void testSerializationRoundTrip() throws Exception {
        IdGenerator idGenerator = new IdGeneratorImpl();


        RecordIdWritable writable1 = new RecordIdWritable(idGenerator.newRecordId("foo"));


        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutput out = new DataOutputStream(bos);
        writable1.write(out);


        System.out.println(Bytes.toStringBinary(bos.toByteArray()));


        // Verify the binary length
        assertEquals(1 /* vint length */ + 1 /* record id type byte */ + "foo".length(), bos.toByteArray().length);


        RecordIdWritable writable2 = new RecordIdWritable();
        writable2.readFields(new DataInputStream(new ByteArrayInputStream(bos.toByteArray())));


        assertEquals(idGenerator.newRecordId("foo"), writable2.getRecordId());
    }

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

    @Test
    public void testRecordIdListMapping() throws Exception {
        byte[] mapping1Data = IOUtils.toByteArray(getClass().getClassLoader().getResourceAsStream(BASE_PATH + "shardingconfig1.json"));
        ShardSelector selector = JsonShardSelectorBuilder.build(mapping1Data);


        IdGenerator idGenerator = new IdGeneratorImpl();


        String shardName = selector.getShard(idGenerator.newRecordId());
        assertNotNull(shardName);
    }

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

    @Test
    public void testStringFieldListMapping() throws Exception {
        byte[] mappingData = IOUtils.toByteArray(getClass().getClassLoader().getResourceAsStream(BASE_PATH + "shardingconfig2.json"));
        ShardSelector selector = JsonShardSelectorBuilder.build(mappingData);


        IdGenerator idGenerator = new IdGeneratorImpl();
        RecordId recordId = idGenerator.newRecordId(Collections.singletonMap("transport", "car"));


        String shardName = selector.getShard(recordId);
        assertEquals("shard1", shardName);
    }

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

    @Test
    public void testLongFieldRangeMapping() throws Exception {
        byte[] mappingData = IOUtils.toByteArray(getClass().getClassLoader().getResourceAsStream(BASE_PATH + "shardingconfig3.json"));
        ShardSelector selector = JsonShardSelectorBuilder.build(mappingData);


        IdGenerator idGenerator = new IdGeneratorImpl();
        RecordId recordId = idGenerator.newRecordId(Collections.singletonMap("weight", "400"));


        String shardName = selector.getShard(recordId);
        assertEquals("shard1", shardName);


        recordId = idGenerator.newRecordId(Collections.singletonMap("weight", "1000"));
        shardName = selector.getShard(recordId);
        assertEquals("shard2", shardName);


        recordId = idGenerator.newRecordId(Collections.singletonMap("weight", "1200"));
        shardName = selector.getShard(recordId);
        assertEquals("shard2", shardName);


        recordId = idGenerator.newRecordId(Collections.singletonMap("weight", "341234123"));
        shardName = selector.getShard(recordId);
        assertEquals("shard3", shardName);


        recordId = idGenerator.newRecordId(Collections.singletonMap("weight", "abc"));
        try {
            shardName = selector.getShard(recordId);
            fail("Expected an exception");
        } catch (ShardSelectorException e) {
            // expected

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

        shards.put("shard2", "http://solr2");
        shards.put("shard3", "http://solr3");


        ShardSelector selector = DefaultShardSelectorBuilder.createDefaultSelector(shards);


        IdGenerator idGenerator = new IdGeneratorImpl();


        boolean shard1Used = false;
        boolean shard2Used = false;
        boolean shard3Used = false;


        for (int i = 0; i < 50; i++) {
            String shardName = selector.getShard(idGenerator.newRecordId());
            assertTrue(shards.containsKey(shardName));


            if (shardName.equals("shard1")) {
                shard1Used = true;
            } else if (shardName.equals("shard2")) {

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

    private LRepository repository;


    @Before
    public void setUp() {
        typeManager = mock(TypeManager.class, Mockito.RETURNS_DEEP_STUBS);
        idGenerator = new IdGeneratorImpl();
        repository = mock(LRepository.class);
        when(repository.getTypeManager()).thenReturn(typeManager);
        when(repository.getIdGenerator()).thenReturn(idGenerator);
    }

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Examples of org.lilyproject.repository.impl.id.IdGeneratorImpl

    public static void setUpBeforeClass() throws Exception {
        TestHelper.setupLogging();
        HBASE_PROXY = new HBaseProxy();
        HBASE_PROXY.start();


        IdGenerator idGenerator = new IdGeneratorImpl();
        configuration = HBASE_PROXY.getConf();
        zooKeeper = new StateWatchingZooKeeper(HBASE_PROXY.getZkConnectString(), 10000);
        hbaseTableFactory = new HBaseTableFactoryImpl(HBASE_PROXY.getConf());


        RepositoryModel repositoryModel = new RepositoryModelImpl(zooKeeper);

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