| /** |
| * 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.arrow.vector; |
| |
| import java.util.Iterator; |
| |
| import org.apache.arrow.memory.BufferAllocator; |
| import org.apache.arrow.vector.types.MaterializedField; |
| import org.apache.arrow.vector.util.TransferPair; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.Iterators; |
| |
| import io.netty.buffer.ArrowBuf; |
| |
| public abstract class BaseValueVector implements ValueVector { |
| private static final Logger logger = LoggerFactory.getLogger(BaseValueVector.class); |
| |
| public static final String MAX_ALLOCATION_SIZE_PROPERTY = "arrow.vector.max_allocation_bytes"; |
| public static final int MAX_ALLOCATION_SIZE = Integer.getInteger(MAX_ALLOCATION_SIZE_PROPERTY, Integer.MAX_VALUE); |
| public static final int INITIAL_VALUE_ALLOCATION = 4096; |
| |
| protected final BufferAllocator allocator; |
| protected final MaterializedField field; |
| |
| protected BaseValueVector(MaterializedField field, BufferAllocator allocator) { |
| this.field = Preconditions.checkNotNull(field, "field cannot be null"); |
| this.allocator = Preconditions.checkNotNull(allocator, "allocator cannot be null"); |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + "[field = " + field + ", ...]"; |
| } |
| |
| @Override |
| public void clear() { |
| getMutator().reset(); |
| } |
| |
| @Override |
| public void close() { |
| clear(); |
| } |
| |
| @Override |
| public MaterializedField getField() { |
| return field; |
| } |
| |
| public MaterializedField getField(String ref){ |
| return getField().withPath(ref); |
| } |
| |
| @Override |
| public TransferPair getTransferPair(BufferAllocator allocator) { |
| return getTransferPair(getField().getPath(), allocator); |
| } |
| |
| // public static SerializedField getMetadata(BaseValueVector vector) { |
| // return getMetadataBuilder(vector).build(); |
| // } |
| // |
| // protected static SerializedField.Builder getMetadataBuilder(BaseValueVector vector) { |
| // return SerializedFieldHelper.getAsBuilder(vector.getField()) |
| // .setValueCount(vector.getAccessor().getValueCount()) |
| // .setBufferLength(vector.getBufferSize()); |
| // } |
| |
| public abstract static class BaseAccessor implements ValueVector.Accessor { |
| protected BaseAccessor() { } |
| |
| @Override |
| public boolean isNull(int index) { |
| return false; |
| } |
| } |
| |
| public abstract static class BaseMutator implements ValueVector.Mutator { |
| protected BaseMutator() { } |
| |
| @Override |
| public void generateTestData(int values) {} |
| |
| //TODO: consider making mutator stateless(if possible) on another issue. |
| @Override |
| public void reset() {} |
| } |
| |
| @Override |
| public Iterator<ValueVector> iterator() { |
| return Iterators.emptyIterator(); |
| } |
| |
| public static boolean checkBufRefs(final ValueVector vv) { |
| for(final ArrowBuf buffer : vv.getBuffers(false)) { |
| if (buffer.refCnt() <= 0) { |
| throw new IllegalStateException("zero refcount"); |
| } |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public BufferAllocator getAllocator() { |
| return allocator; |
| } |
| } |
| |