public HColumn<N, V> peek() { if(hasNext()){ return iterator.peek(); } return null; }
@Test public void testUUIDGetAll() { // Gets all columns in the row regardless of the column name init(); // Get all rows Set<UUID> results = new HashSet<UUID>(); ColumnSliceIterator<String, DynamicComposite, String> iterator = getIterator(rowKey, null, null); while(iterator.hasNext()) { HColumn<DynamicComposite, String> column = iterator.next(); DynamicComposite composite = column.getName(); UUID component1 = composite.get(1, us); results.add(component1); } assertEquals("Failed to retrieve all columns", 8, results.size()); }
@Test public void testIterator() { SliceQuery<String, UUID, String> query = HFactory.createSliceQuery(keyspace, se, us, se).setKey(KEY).setColumnFamily(CF); ColumnSliceIterator<String, UUID, String> it = new ColumnSliceIterator<String, UUID, String>(query, null, FINISH, false, 100); Map<UUID, String> results = new HashMap<UUID, String>(); while (it.hasNext()) { HColumn<UUID, String> c = it.next(); results.put(c.getName(), c.getValue()); } assertEquals(1000, results.size()); }
@Test public void testModificationIterator() { Mutator mutator = HFactory.createMutator(keyspace, se); SliceQuery<String, UUID, String> query = HFactory.createSliceQuery(keyspace, se, us, se).setKey(KEY).setColumnFamily(CF); ColumnSliceIterator<String, UUID, String> it = new ColumnSliceIterator<String, UUID, String>(query, null, FINISH, false, 100); Map<UUID, String> results = new HashMap<UUID, String>(); while (it.hasNext()) { HColumn<UUID, String> c = it.next(); results.put(c.getName(), c.getValue()); mutator.addDeletion(KEY, CF, c.getName(), us); mutator.execute(); } assertEquals(1000, results.size()); }
@Test public void testUUIDGetSlice() { // Gets all columns based on the first component in the column name Map<UUID, Set<UUID>> ids = init(); for(Entry<UUID, Set<UUID>> entry : ids.entrySet()) { UUID component0 = entry.getKey(); // start at first column who's single component == component0 DynamicComposite start = new DynamicComposite(); start.addComponent(component0, us); // up to and including any column whose first component == component0 regardless of remaining component values DynamicComposite end = new DynamicComposite(); end.addComponent(component0, us, us.getComparatorType().getTypeName(), ComponentEquality.GREATER_THAN_EQUAL); ColumnSliceIterator<String, DynamicComposite, String> iterator = getIterator(rowKey, start, end); while(iterator.hasNext()) { HColumn<DynamicComposite, String> column = iterator.next(); DynamicComposite composite = column.getName(); assertEquals(component0, composite.get(0, us)); assertTrue(ids.get(component0).contains(composite.get(1, us))); } } }
public HColumn<N, V> peek() { if(hasNext()){ return iterator.peek(); } return null; }
while (it.hasNext()) { HColumn<String, String> c = it.next(); String name = c.getName();
while (iterator.hasNext()) { HColumn<ByteBuffer, ByteBuffer> column = iterator.next(); updater.setValue(column.getName(), column.getValue(), this.bs);
@Test public void testCopy() { new ColumnFamilyRowCopy<String, UUID>(keyspace, ss).setColumnFamily(CF). setRowKey(SOURCE_KEY). setDestinationKey(DESTINATION_KEY). setMutateInterval(150).copy(); SliceQuery<String, ByteBuffer, String> query = HFactory.createSliceQuery(keyspace, ss, bs, ss). setKey(DESTINATION_KEY).setColumnFamily(CF); ColumnSliceIterator<String, ByteBuffer, String> it = new ColumnSliceIterator<String, ByteBuffer, String>(query, bs. fromBytes(new byte[0]), bs.fromBytes(new byte[0]), false, 100); int total = 0; while (it.hasNext()) { it.next(); total++; } assertEquals(columns, total); } }
@Override protected byte[][] computeNext() { if (!results.hasNext()) { return endOfData(); } return new byte[][] { query[0], query[1], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) results.next().getName().get(0)), query[3] }; } };
@Override protected byte[][] computeNext() { if (!results.hasNext()) { return endOfData(); } return new byte[][] { query[0], query[1], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) results.next().getName().get(0)), query[3] }; } };
@Override protected byte[][] computeNext() { if (!results.hasNext()) { return endOfData(); } final HColumn<Composite, byte[]> column = results.next(); final byte[][] result = new byte[][] { reordered_query[0], reordered_query[1], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(0)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(1)) }; return reorderQuadReverse(result, _maps.get(columnFamily)); } };
@Override protected byte[][] computeNext() { if (!results.hasNext()) { return endOfData(); } final HColumn<Composite, byte[]> column = results.next(); final byte[][] result = new byte[][] { reordered_query[0], reordered_query[1], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(0)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(1)) }; return reorderQuadReverse(result, _maps.get(columnFamily)); } };
@Override protected byte[][] computeNext() { if (!iter.hasNext() || (_returned >= limit)) { return endOfData(); } _returned++; final HColumn<Composite, byte[]> column = iter.next(); if (column.getName().size() == 2) { return new byte[][] { BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(0)), query[1], query[2], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(1)) }; } else { return new byte[][] { BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(0)), query[1], query[2] }; } } };
@Override protected byte[][] computeNext() { if (!iter.hasNext() || (_returned >= limit)) { return endOfData(); } _returned++; final HColumn<Composite, byte[]> column = iter.next(); if (column.getName().size() == 2) { return new byte[][] { BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(0)), query[1], query[2], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(1)) }; } else { return new byte[][] { BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.getName().get(0)), query[1], query[2] }; } } };
@Override protected byte[][] computeNext() { try { if (!iter.hasNext() || (_returned >= limit)) { return endOfData(); } final HColumn<Composite, byte[]> next_col = iter.next(); byte[][] ids; _returned++; final Composite column = next_col.getName(); if (column.size() == 3) { ids = new byte[][] { reordered_query[0], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(0)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(1)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(2)) }; return reorderQuadReverse(ids, map); } else { ids = new byte[][] { reordered_query[0], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(0)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(1)) }; return reorderTripleReverse(ids, map); } } catch (final Exception exception) { _log.error(MessageCatalog._00061_QUERY_EVALUATION_FAILURE, exception, Arrays.toString(query)); return endOfData(); } } };
@Override protected byte[][] computeNext() { try { if (!iter.hasNext() || (_returned >= limit)) { return endOfData(); } final HColumn<Composite, byte[]> next_col = iter.next(); byte[][] ids; _returned++; final Composite column = next_col.getName(); if (column.size() == 3) { ids = new byte[][] { reordered_query[0], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(0)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(1)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(2)) }; return reorderQuadReverse(ids, map); } else { ids = new byte[][] { reordered_query[0], BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(0)), BYTE_SERIALIZER.fromByteBuffer((ByteBuffer) column.get(1)) }; return reorderTripleReverse(ids, map); } } catch (final Exception exception) { _log.error(MessageCatalog._00061_QUERY_EVALUATION_FAILURE, exception, Arrays.toString(query)); return endOfData(); } } };
while (iterator.hasNext()) { HColumn<ByteBuffer, ByteBuffer> column = iterator.next(); updater.setValue(column.getName(), column.getValue(), this.bs);