/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cassandra.db.composites;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.*;
import com.google.common.collect.AbstractIterator;
import org.apache.cassandra.cql3.CQL3Row;
import org.apache.cassandra.cql3.ColumnIdentifier;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.filter.IDiskAtomFilter;
import org.apache.cassandra.db.filter.NamesQueryFilter;
import org.apache.cassandra.db.marshal.AbstractType;
import org.apache.cassandra.db.marshal.CollectionType;
import org.apache.cassandra.db.marshal.ColumnToCollectionType;
import org.apache.cassandra.io.ISerializer;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.utils.ByteBufferUtil;
public abstract class AbstractCellNameType extends AbstractCType implements CellNameType
{
private final Comparator<Cell> columnComparator;
private final Comparator<Cell> columnReverseComparator;
private final Comparator<OnDiskAtom> onDiskAtomComparator;
private final ISerializer<CellName> cellSerializer;
private final ColumnSerializer columnSerializer;
private final OnDiskAtom.Serializer onDiskAtomSerializer;
private final IVersionedSerializer<NamesQueryFilter> namesQueryFilterSerializer;
private final IVersionedSerializer<IDiskAtomFilter> diskAtomFilterSerializer;
protected AbstractCellNameType()
{
columnComparator = new Comparator<Cell>()
{
public int compare(Cell c1, Cell c2)
{
return AbstractCellNameType.this.compare(c1.name(), c2.name());
}
};
columnReverseComparator = new Comparator<Cell>()
{
public int compare(Cell c1, Cell c2)
{
return AbstractCellNameType.this.compare(c2.name(), c1.name());
}
};
onDiskAtomComparator = new Comparator<OnDiskAtom>()
{
public int compare(OnDiskAtom c1, OnDiskAtom c2)
{
int comp = AbstractCellNameType.this.compare(c1.name(), c2.name());
if (comp != 0)
return comp;
if (c1 instanceof RangeTombstone)
{
if (c2 instanceof RangeTombstone)
{
RangeTombstone t1 = (RangeTombstone)c1;
RangeTombstone t2 = (RangeTombstone)c2;
int comp2 = AbstractCellNameType.this.compare(t1.max, t2.max);
return comp2 == 0 ? t1.data.compareTo(t2.data) : comp2;
}
else
{
return -1;
}
}
else
{
return c2 instanceof RangeTombstone ? 1 : 0;
}
}
};
// A trivial wrapped over the composite serializer
cellSerializer = new ISerializer<CellName>()
{
public void serialize(CellName c, DataOutput out) throws IOException
{
serializer().serialize(c, out);
}
public CellName deserialize(DataInput in) throws IOException
{
Composite ct = serializer().deserialize(in);
if (ct.isEmpty())
throw ColumnSerializer.CorruptColumnException.create(in, ByteBufferUtil.EMPTY_BYTE_BUFFER);
assert ct instanceof CellName : ct;
return (CellName)ct;
}
public long serializedSize(CellName c, TypeSizes type)
{
return serializer().serializedSize(c, type);
}
};
columnSerializer = new ColumnSerializer(this);
onDiskAtomSerializer = new OnDiskAtom.Serializer(this);
namesQueryFilterSerializer = new NamesQueryFilter.Serializer(this);
diskAtomFilterSerializer = new IDiskAtomFilter.Serializer(this);
}
public Comparator<Cell> columnComparator()
{
return columnComparator;
}
public Comparator<Cell> columnReverseComparator()
{
return columnReverseComparator;
}
public Comparator<OnDiskAtom> onDiskAtomComparator()
{
return onDiskAtomComparator;
}
public ISerializer<CellName> cellSerializer()
{
return cellSerializer;
}
public ColumnSerializer columnSerializer()
{
return columnSerializer;
}
public OnDiskAtom.Serializer onDiskAtomSerializer()
{
return onDiskAtomSerializer;
}
public IVersionedSerializer<NamesQueryFilter> namesQueryFilterSerializer()
{
return namesQueryFilterSerializer;
}
public IVersionedSerializer<IDiskAtomFilter> diskAtomFilterSerializer()
{
return diskAtomFilterSerializer;
}
public CellName cellFromByteBuffer(ByteBuffer bytes)
{
return (CellName)fromByteBuffer(bytes);
}
public CellName create(Composite prefix, ColumnIdentifier columnName, ByteBuffer collectionElement)
{
throw new UnsupportedOperationException();
}
public CellName rowMarker(Composite prefix)
{
throw new UnsupportedOperationException();
}
public boolean hasCollections()
{
return false;
}
public boolean supportCollections()
{
return false;
}
public ColumnToCollectionType collectionType()
{
throw new UnsupportedOperationException();
}
public CellNameType addCollection(ColumnIdentifier columnName, CollectionType newCollection)
{
throw new UnsupportedOperationException();
}
@Override
public Composite make(Object... components)
{
return components.length == size() ? makeCellName(components) : super.make(components);
}
public CellName makeCellName(Object... components)
{
ByteBuffer[] rawComponents = new ByteBuffer[components.length];
for (int i = 0; i < components.length; i++)
{
Object c = components[i];
if (c instanceof ByteBuffer)
{
rawComponents[i] = (ByteBuffer)c;
}
else
{
AbstractType<?> type = (AbstractType)subtype(i);
// If it's a collection type, we need to find the right collection and use the key comparator (since we're building a cell name)
if (type instanceof ColumnToCollectionType)
{
assert i > 0;
type = ((ColumnToCollectionType)type).defined.get(rawComponents[i-1]).nameComparator();
}
rawComponents[i] = ((AbstractType)type).decompose(c);
}
}
return makeCellName(rawComponents);
}
protected abstract CellName makeCellName(ByteBuffer[] components);
protected static CQL3Row.Builder makeDenseCQL3RowBuilder(final long now)
{
return new CQL3Row.Builder()
{
public Iterator<CQL3Row> group(final Iterator<Cell> cells)
{
return new AbstractIterator<CQL3Row>()
{
protected CQL3Row computeNext()
{
while (cells.hasNext())
{
final Cell cell = cells.next();
if (cell.isMarkedForDelete(now))
continue;
return new CQL3Row()
{
public ByteBuffer getClusteringColumn(int i)
{
return cell.name().get(i);
}
public Cell getColumn(ColumnIdentifier name)
{
return cell;
}
public List<Cell> getCollection(ColumnIdentifier name)
{
return null;
}
};
}
return endOfData();
}
};
}
};
}
protected static CQL3Row.Builder makeSparseCQL3RowBuilder(final long now)
{
return new CQL3Row.Builder()
{
public Iterator<CQL3Row> group(final Iterator<Cell> cells)
{
return new AbstractIterator<CQL3Row>()
{
private CellName previous;
private CQL3RowOfSparse currentRow;
protected CQL3Row computeNext()
{
while (cells.hasNext())
{
final Cell cell = cells.next();
if (cell.isMarkedForDelete(now))
continue;
CQL3Row toReturn = null;
CellName current = cell.name();
if (currentRow == null || !current.isSameCQL3RowAs(previous))
{
toReturn = currentRow;
currentRow = new CQL3RowOfSparse(current);
}
currentRow.add(cell);
previous = current;
if (toReturn != null)
return toReturn;
}
if (currentRow != null)
{
CQL3Row toReturn = currentRow;
currentRow = null;
return toReturn;
}
return endOfData();
}
};
}
};
}
private static class CQL3RowOfSparse implements CQL3Row
{
private final CellName cell;
private Map<ColumnIdentifier, Cell> columns;
private Map<ColumnIdentifier, List<Cell>> collections;
CQL3RowOfSparse(CellName cell)
{
this.cell = cell;
}
public ByteBuffer getClusteringColumn(int i)
{
return cell.get(i);
}
void add(Cell cell)
{
CellName cellName = cell.name();
ColumnIdentifier columnName = cellName.cql3ColumnName();
if (cellName.isCollectionCell())
{
if (collections == null)
collections = new HashMap<>();
List<Cell> values = collections.get(columnName);
if (values == null)
{
values = new ArrayList<Cell>();
collections.put(columnName, values);
}
values.add(cell);
}
else
{
if (columns == null)
columns = new HashMap<>();
columns.put(columnName, cell);
}
}
public Cell getColumn(ColumnIdentifier name)
{
return columns == null ? null : columns.get(name);
}
public List<Cell> getCollection(ColumnIdentifier name)
{
return collections == null ? null : collections.get(name);
}
}
}