| /* |
| * 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.drill.exec.vector.complex; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.drill.common.types.TypeProtos.MajorType; |
| import org.apache.drill.common.types.TypeProtos.MinorType; |
| import org.apache.drill.common.types.Types; |
| import org.apache.drill.exec.expr.holders.ComplexHolder; |
| import org.apache.drill.exec.expr.holders.RepeatedMapHolder; |
| import org.apache.drill.exec.expr.holders.RepeatedValueHolder; |
| import org.apache.drill.exec.memory.BufferAllocator; |
| import org.apache.drill.exec.record.MaterializedField; |
| import org.apache.drill.exec.record.TransferPair; |
| import org.apache.drill.exec.util.CallBack; |
| import org.apache.drill.exec.util.JsonStringArrayList; |
| import org.apache.drill.exec.vector.UInt4Vector; |
| import org.apache.drill.exec.vector.ValueVector; |
| import org.apache.drill.exec.vector.SchemaChangeCallBack; |
| import org.apache.drill.exec.vector.complex.impl.NullReader; |
| import org.apache.drill.exec.vector.complex.impl.RepeatedMapReaderImpl; |
| import org.apache.drill.exec.vector.complex.reader.FieldReader; |
| |
| import com.google.common.collect.Maps; |
| |
| public class RepeatedMapVector extends AbstractRepeatedMapVector { |
| |
| public final static MajorType TYPE = Types.repeated(MinorType.MAP); |
| |
| private final Accessor accessor = new Accessor(); |
| private final Mutator mutator = new Mutator(); |
| private final RepeatedMapReaderImpl reader = new RepeatedMapReaderImpl(this); |
| |
| public RepeatedMapVector(MaterializedField field, BufferAllocator allocator, CallBack callBack) { |
| super(field, allocator, callBack); |
| } |
| |
| public RepeatedMapVector(MaterializedField field, UInt4Vector offsets, CallBack callBack) { |
| super(field, offsets, callBack); |
| } |
| |
| @Override |
| public RepeatedMapReaderImpl getReader() { return reader; } |
| |
| @Override |
| public TransferPair getTransferPair(BufferAllocator allocator) { |
| return new RepeatedMapTransferPair(getField().getName(), allocator); |
| } |
| |
| @Override |
| public TransferPair makeTransferPair(ValueVector to) { |
| return new RepeatedMapTransferPair((RepeatedMapVector) to); |
| } |
| |
| MapSingleCopier makeSingularCopier(MapVector to) { |
| return new MapSingleCopier(this, to); |
| } |
| |
| protected static class MapSingleCopier { |
| private final TransferPair[] pairs; |
| public final RepeatedMapVector from; |
| |
| public MapSingleCopier(RepeatedMapVector from, MapVector to) { |
| this.from = from; |
| this.pairs = new TransferPair[from.size()]; |
| |
| int i = 0; |
| ValueVector vector; |
| for (String child:from.getChildFieldNames()) { |
| int preSize = to.size(); |
| vector = from.getChild(child); |
| if (vector == null) { |
| continue; |
| } |
| ValueVector newVector = to.addOrGet(child, vector.getField().getType(), vector.getClass()); |
| if (to.size() != preSize) { |
| newVector.allocateNew(); |
| } |
| pairs[i++] = vector.makeTransferPair(newVector); |
| } |
| } |
| |
| public void copySafe(int fromSubIndex, int toIndex) { |
| for (TransferPair p : pairs) { |
| p.copyValueSafe(fromSubIndex, toIndex); |
| } |
| } |
| } |
| |
| @Override |
| public TransferPair getTransferPair(String ref, BufferAllocator allocator) { |
| return new RepeatedMapTransferPair(ref, allocator); |
| } |
| |
| private class RepeatedMapTransferPair extends AbstractRepeatedMapTransferPair<RepeatedMapVector> { |
| |
| RepeatedMapTransferPair(String path, BufferAllocator allocator) { |
| super(new RepeatedMapVector(MaterializedField.create(path, TYPE), allocator, new SchemaChangeCallBack()), false); |
| } |
| |
| RepeatedMapTransferPair(RepeatedMapVector to) { |
| super(to); |
| } |
| |
| RepeatedMapTransferPair(RepeatedMapVector to, boolean allocate) { |
| super(to, allocate); |
| } |
| } |
| |
| public class Accessor extends AbstractRepeatedMapVector.Accessor { |
| @Override |
| public Object getObject(int index) { |
| List<Object> list = new JsonStringArrayList<>(); |
| int end = offsets.getAccessor().get(index+1); |
| String fieldName; |
| for (int i = offsets.getAccessor().get(index); i < end; i++) { |
| Map<String, Object> vv = Maps.newLinkedHashMap(); |
| for (MaterializedField field : getField().getChildren()) { |
| if (!field.equals(BaseRepeatedValueVector.OFFSETS_FIELD)) { |
| fieldName = field.getName(); |
| Object value = getChild(fieldName).getAccessor().getObject(i); |
| if (value != null) { |
| vv.put(fieldName, value); |
| } |
| } |
| } |
| list.add(vv); |
| } |
| return list; |
| } |
| |
| public void get(int index, ComplexHolder holder) { |
| FieldReader reader = getReader(); |
| reader.setPosition(index); |
| holder.reader = reader; |
| } |
| |
| public void get(int index, int arrayIndex, ComplexHolder holder) { |
| RepeatedMapHolder h = new RepeatedMapHolder(); |
| get(index, h); |
| int offset = h.start + arrayIndex; |
| |
| if (offset >= h.end) { |
| holder.reader = NullReader.INSTANCE; |
| } else { |
| reader.setSinglePosition(index, arrayIndex); |
| holder.reader = reader; |
| } |
| } |
| } |
| |
| public class Mutator extends AbstractRepeatedMapVector.Mutator { |
| } |
| |
| @Override |
| public Accessor getAccessor() { |
| return accessor; |
| } |
| |
| @Override |
| public Mutator getMutator() { |
| return mutator; |
| } |
| |
| @Override |
| RepeatedValueHolder getValueHolder() { |
| return new RepeatedMapHolder(); |
| } |
| } |