Package org.apache.commons.collections.iterators

Examples of org.apache.commons.collections.iterators.CollatingIterator

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    }
     */
    public static CollatingIterator getCollatingIterator()
    {
        // CollatingIterator will happily NPE if you do not specify a comparator explicitly
        return new CollatingIterator(new Comparator()
        {
            public int compare(Object o1, Object o2)
            {
                return ((Comparable) o1).compareTo(o2);
            }
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                  new CompactionController(cfs, cfs.getSSTables(), getDefaultGcBefore(cfs), true));
        }

        protected static CollatingIterator getCollatingIterator(Iterable<SSTableReader> sstables, Range range) throws IOException
        {
            CollatingIterator iter = FBUtilities.getCollatingIterator();
            for (SSTableReader sstable : sstables)
            {
                iter.addIterator(sstable.getDirectScanner(FILE_BUFFER_SIZE, range));
            }
            return iter;
        }
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    @SuppressWarnings("unchecked")
    protected static CollatingIterator getCollatingIterator(Iterable<SSTableReader> sstables) throws IOException
    {
        // TODO CollatingIterator iter = FBUtilities.<SSTableIdentityIterator>getCollatingIterator();
        CollatingIterator iter = FBUtilities.getCollatingIterator();
        for (SSTableReader sstable : sstables)
        {
            iter.addIterator(sstable.getDirectScanner(FILE_BUFFER_SIZE));
        }
        return iter;
    }
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    {
        for (SSTableIdentityIterator row : rows)
        {
            row.reset();
        }
        reducer = new LazyColumnIterator(new CollatingIterator(getComparator().columnComparator, rows));
        return Iterators.filter(reducer, Predicates.notNull());
    }
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    // Note: this would deserialize the response a 2nd time if getData was called first.
    // (this is not currently an issue since we don't do read repair for range queries.)
    public Iterable<Row> resolve() throws IOException
    {
        CollatingIterator collator = new CollatingIterator(new Comparator<Pair<Row,InetAddress>>()
        {
            public int compare(Pair<Row,InetAddress> o1, Pair<Row,InetAddress> o2)
            {
                return o1.left.key.compareTo(o2.left.key);
            }
        });

        int n = 0;
        for (Message response : responses)
        {
            RangeSliceReply reply = RangeSliceReply.read(response.getMessageBody(), response.getVersion());
            n = Math.max(n, reply.rows.size());
            collator.addIterator(new RowIterator(reply.rows.iterator(), response.getFrom()));
        }

        // for each row, compute the combination of all different versions seen, and repair incomplete versions
        return new ReducingIterator<Pair<Row,InetAddress>, Row>(collator)
        {
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        // mimic the collectCollatedColumn + removeDeleted path that getColumnFamily takes.
        // this will handle removing columns and subcolumns that are supressed by a row or
        // supercolumn tombstone.
        QueryFilter filter = new QueryFilter(null, new QueryPath(resolved.metadata().cfName), new IdentityQueryFilter());
        CollatingIterator iter = new CollatingIterator(resolved.metadata().comparator.columnComparator);
        for (ColumnFamily version : versions)
        {
            if (version == null)
                continue;
            iter.addIterator(version.getColumnsMap().values().iterator());
        }
        filter.collectCollatedColumns(resolved, iter, Integer.MIN_VALUE);
        return ColumnFamilyStore.removeDeleted(resolved, Integer.MIN_VALUE);
    }
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    }

    public static <T extends Comparable<T>> CollatingIterator getCollatingIterator()
    {
        // CollatingIterator will happily NPE if you do not specify a comparator explicitly
        return new CollatingIterator(new Comparator<T>()
        {
            public int compare(T o1, T o2)
            {
                return o1.compareTo(o2);
            }
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        this.partitioner = partitioner;
    }

    public List<Row> resolve(Collection<Message> responses) throws DigestMismatchException, IOException
    {
        CollatingIterator collator = new CollatingIterator(new Comparator<Pair<Row,InetAddress>>()
        {
            public int compare(Pair<Row,InetAddress> o1, Pair<Row,InetAddress> o2)
            {
                return partitioner.getToken(o1.left.key).compareTo(partitioner.getToken(o2.left.key));
            }
        });
       
        int n = 0;
        for (Message response : responses)
        {
            RangeSliceReply reply = RangeSliceReply.read(response.getMessageBody());
            n = Math.max(n, reply.rows.size());
            collator.addIterator(new RowIterator(reply.rows.iterator(), response.getFrom()));
        }

        // for each row, compute the combination of all different versions seen, and repair incomplete versions
        ReducingIterator<Pair<Row,InetAddress>, Row> iter = new ReducingIterator<Pair<Row,InetAddress>, Row>(collator)
        {
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                public boolean evaluate(Object row)
                {
                    return Range.isTokenInRanges(((IteratingRow)row).getKey().token, ranges);
                }
            };
            CollatingIterator iter = FBUtilities.<IteratingRow>getCollatingIterator();
            for (SSTableReader sstable : sstables)
            {
                SSTableScanner scanner = sstable.getScanner(FILE_BUFFER_SIZE);
                iter.addIterator(new FilterIterator(scanner, rangesPredicate));
            }
            return iter;
        }
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        this.table = table;
    }

    public List<Row> resolve(Collection<Message> responses) throws DigestMismatchException, IOException
    {
        CollatingIterator collator = new CollatingIterator(new Comparator<Pair<Row,InetAddress>>()
        {
            public int compare(Pair<Row,InetAddress> o1, Pair<Row,InetAddress> o2)
            {
                return o1.left.key.compareTo(o2.left.key);
            }
        });
       
        int n = 0;
        for (Message response : responses)
        {
            RangeSliceReply reply = RangeSliceReply.read(response.getMessageBody());
            n = Math.max(n, reply.rows.size());
            collator.addIterator(new RowIterator(reply.rows.iterator(), response.getFrom()));
        }

        // for each row, compute the combination of all different versions seen, and repair incomplete versions
        ReducingIterator<Pair<Row,InetAddress>, Row> iter = new ReducingIterator<Pair<Row,InetAddress>, Row>(collator)
        {
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Related Classes of org.apache.commons.collections.iterators.CollatingIterator

  • org.apache.cassandra.db.ColumnFamilyStore$AntiCompactionIterator
  • org.apache.cassandra.db.compaction.CompactionIterator
  • org.apache.cassandra.db.compaction.CompactionManager$ValidationCompactionIterator
  • org.apache.cassandra.db.compaction.LazilyCompactedRow
  • org.apache.cassandra.db.CompactionManager$AntiCompactionIterator
  • org.apache.cassandra.db.CompactionManager$ValidationCompactionIterator
  • org.apache.cassandra.io.CompactionIterator
  • org.apache.cassandra.io.LazilyCompactedRow
  • org.apache.cassandra.service.RangeSliceResponseResolver
  • org.apache.cassandra.service.RowRepairResolver
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