Examples with BackendColumn com.baidu.hugegraph.backend.store.BackendEntry.BackendColumn used on opensource projects

Example 6 with BackendColumn

use of com.baidu.hugegraph.backend.store.BackendEntry.BackendColumn in project incubator-hugegraph by apache.

the class RocksDBSessionTest method testScanByAll.

@Test
public void testScanByAll() throws RocksDBException {
    put("person:1gname", "James");
    put("person:2gname", "Lisa");
    Map<String, String> results = new HashMap<>();
    Session session = this.rocks.session();
    Iterator<BackendColumn> iter = session.scan(TABLE);
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(getString(col.name), getString(col.value));
    }
    Assert.assertEquals(2, results.size());
    // add some keys then scan again
    put("person:3gname", "Tom");
    put("person:4gname", "Mike");
    results = new HashMap<>();
    iter = session.scan(TABLE);
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(getString(col.name), getString(col.value));
    }
    Assert.assertEquals(4, results.size());
    // delete some keys then scan again
    this.rocks.session().delete(TABLE, getBytes("person:2gname"));
    this.rocks.session().commit();
    BaseUnitTest.runWithThreads(1, () -> {
        this.rocks.session().delete(TABLE, getBytes("person:3gname"));
        this.rocks.session().commit();
        this.rocks.close();
    });
    results = new HashMap<>();
    iter = session.scan(TABLE);
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(getString(col.name), getString(col.value));
    }
    Assert.assertEquals(2, results.size());
    // delete some keys by prefix then scan again
    this.rocks.session().deletePrefix(TABLE, getBytes("person:1"));
    this.rocks.session().commit();
    results = new HashMap<>();
    iter = session.scan(TABLE);
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(getString(col.name), getString(col.value));
    }
    Assert.assertEquals(1, results.size());
}

Example 7 with BackendColumn

use of com.baidu.hugegraph.backend.store.BackendEntry.BackendColumn in project incubator-hugegraph by apache.

the class RocksDBSessionTest method testScanByPrefix.

@Test
public void testScanByPrefix() throws RocksDBException {
    put("person:1gname", "James");
    put("person:1gage", "19");
    put("person:1gcity", "Beijing");
    put("person:2gname", "Lisa");
    put("person:2gage", "20");
    put("person:2gcity", "Beijing");
    Map<String, String> results = new HashMap<>();
    Session session = this.rocks.session();
    Iterator<BackendColumn> iter = session.scan(TABLE, getBytes("person:1"));
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(getString(col.name), getString(col.value));
    }
    Assert.assertEquals(3, results.size());
    Assert.assertEquals("James", results.get("person:1gname"));
    Assert.assertEquals("19", results.get("person:1gage"));
    Assert.assertEquals("Beijing", results.get("person:1gcity"));
    Assert.assertEquals("Lisa", get("person:2gname"));
}

Example 8 with BackendColumn

use of com.baidu.hugegraph.backend.store.BackendEntry.BackendColumn in project incubator-hugegraph by apache.

the class RocksDBSessionTest method testScanByRange.

@Test
public void testScanByRange() throws RocksDBException {
    put("person:1gname", "James");
    put("person:1gage", "19");
    put("person:1gcity", "Beijing");
    put("person:2gname", "Lisa");
    put("person:2gage", "20");
    put("person:2gcity", "Beijing");
    put("person:3gname", "Hebe");
    put("person:3gage", "21");
    put("person:3gcity", "Taipei");
    Map<String, String> results = new HashMap<>();
    Session session = this.rocks.session();
    Iterator<BackendColumn> iter = session.scan(TABLE, getBytes("person:1"), getBytes("person:3"));
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(getString(col.name), getString(col.value));
    }
    Assert.assertEquals(6, results.size());
    Assert.assertEquals("James", results.get("person:1gname"));
    Assert.assertEquals("19", results.get("person:1gage"));
    Assert.assertEquals("Beijing", results.get("person:1gcity"));
    Assert.assertEquals("Lisa", results.get("person:2gname"));
    Assert.assertEquals("20", results.get("person:2gage"));
    Assert.assertEquals("Beijing", results.get("person:2gcity"));
    Assert.assertEquals("Hebe", get("person:3gname"));
}

Example 9 with BackendColumn

use of com.baidu.hugegraph.backend.store.BackendEntry.BackendColumn in project incubator-hugegraph by apache.

the class RocksDBSessionTest method testScanByRangeWithSignedBytes.

@Test
public void testScanByRangeWithSignedBytes() throws RocksDBException {
    Session session = this.rocks.session();
    byte[] key11 = new byte[] { 1, 1 };
    byte[] value11 = getBytes("value-1-1");
    session.put(TABLE, key11, value11);
    byte[] key12 = new byte[] { 1, 2 };
    byte[] value12 = getBytes("value-1-2");
    session.put(TABLE, key12, value12);
    byte[] key13 = new byte[] { 1, -3 };
    byte[] value13 = getBytes("value-1-3");
    session.put(TABLE, key13, value13);
    byte[] key21 = new byte[] { 2, 1 };
    byte[] value21 = getBytes("value-2-1");
    session.put(TABLE, key21, value21);
    this.commit();
    Iterator<BackendColumn> iter;
    iter = session.scan(TABLE, new byte[] { 1, -1 }, new byte[] { 1, 3 });
    Assert.assertFalse(iter.hasNext());
    iter = session.scan(TABLE, new byte[] { 1, 1 }, new byte[] { 1, -1 });
    Map<ByteBuffer, byte[]> results = new HashMap<>();
    while (iter.hasNext()) {
        BackendColumn col = iter.next();
        results.put(ByteBuffer.wrap(col.name), col.value);
    }
    Assert.assertEquals(3, results.size());
    Assert.assertArrayEquals(value11, results.get(ByteBuffer.wrap(key11)));
    Assert.assertArrayEquals(value12, results.get(ByteBuffer.wrap(key12)));
    Assert.assertArrayEquals(value13, results.get(ByteBuffer.wrap(key13)));
    Assert.assertArrayEquals(value21, session.get(TABLE, key21));
}

Example 10 with BackendColumn

use of com.baidu.hugegraph.backend.store.BackendEntry.BackendColumn in project incubator-hugegraph by apache.

the class BinaryBackendEntryTest method testColumns.

@Test
public void testColumns() {
    BinaryBackendEntry entry = new BinaryBackendEntry(HugeType.VERTEX, new byte[] { 1, 2 });
    BackendColumn col = BackendColumn.of(new byte[] { 1, 2 }, new byte[] { 3, 4 });
    entry.columns(ImmutableList.of(col));
    Assert.assertEquals(1, entry.columnsSize());
    Assert.assertEquals(ImmutableList.of(col), entry.columns());
    entry.columns(ImmutableList.of(col, col));
    Assert.assertEquals(3, entry.columnsSize());
    Assert.assertEquals(ImmutableList.of(col, col, col), entry.columns());
}