| /* |
| * 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.datasketches.memory; |
| |
| import java.nio.ByteOrder; |
| |
| /** |
| * Implementation of {@link WritableMemory} for heap-based, non-native byte order. |
| * |
| * @author Roman Leventov |
| * @author Lee Rhodes |
| */ |
| final class HeapNonNativeWritableMemoryImpl extends NonNativeWritableMemoryImpl { |
| private static final int id = MEMORY | NONNATIVE | HEAP; |
| private final Object unsafeObj; |
| private final byte typeId; |
| |
| HeapNonNativeWritableMemoryImpl( |
| final Object unsafeObj, |
| final long regionOffset, |
| final long capacityBytes, |
| final int typeId) { |
| super(unsafeObj, 0L, regionOffset, capacityBytes); |
| this.unsafeObj = unsafeObj; |
| this.typeId = (byte) (id | (typeId & 0x7)); |
| } |
| |
| @Override |
| BaseWritableMemoryImpl toWritableRegion(final long offsetBytes, final long capacityBytes, |
| final boolean readOnly, final ByteOrder byteOrder) { |
| final int type = typeId | REGION | (readOnly ? READONLY : 0); |
| return isNativeByteOrder(byteOrder) |
| ? new HeapWritableMemoryImpl( |
| unsafeObj, getRegionOffset(offsetBytes), capacityBytes, |
| type) |
| : new HeapNonNativeWritableMemoryImpl( |
| unsafeObj, getRegionOffset(offsetBytes), capacityBytes, |
| type); |
| } |
| |
| @Override |
| BaseWritableBufferImpl toWritableBuffer(final boolean readOnly, final ByteOrder byteOrder) { |
| final int type = typeId | (readOnly ? READONLY : 0); |
| return isNativeByteOrder(byteOrder) |
| ? new HeapWritableBufferImpl( |
| unsafeObj, getRegionOffset(), getCapacity(), |
| type, this) |
| : new HeapNonNativeWritableBufferImpl( |
| unsafeObj, getRegionOffset(), getCapacity(), |
| type, this); |
| } |
| |
| @Override |
| int getTypeId() { |
| return typeId & 0xff; |
| } |
| |
| @Override |
| Object getUnsafeObject() { |
| return unsafeObj; |
| } |
| |
| } |