| /** |
| * 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.hadoop.hbase; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.nio.ByteBuffer; |
| import org.apache.hadoop.hbase.util.ByteBufferUtils; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.ClassSize; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * This Cell is an implementation of {@link ByteBufferExtendedCell} where the data resides in |
| * off heap/ on heap ByteBuffer |
| */ |
| @InterfaceAudience.Private |
| public class ByteBufferKeyValue extends ByteBufferExtendedCell { |
| |
| protected final ByteBuffer buf; |
| protected final int offset; |
| protected final int length; |
| private long seqId = 0; |
| |
| public static final int FIXED_OVERHEAD = ClassSize.OBJECT + ClassSize.REFERENCE |
| + (2 * Bytes.SIZEOF_INT) + Bytes.SIZEOF_LONG; |
| |
| public ByteBufferKeyValue(ByteBuffer buf, int offset, int length, long seqId) { |
| this.buf = buf; |
| this.offset = offset; |
| this.length = length; |
| this.seqId = seqId; |
| } |
| |
| public ByteBufferKeyValue(ByteBuffer buf, int offset, int length) { |
| this.buf = buf; |
| this.offset = offset; |
| this.length = length; |
| } |
| |
| public ByteBuffer getBuffer() { |
| return this.buf; |
| } |
| |
| public int getOffset() { |
| return this.offset; |
| } |
| |
| @Override |
| public byte[] getRowArray() { |
| return CellUtil.cloneRow(this); |
| } |
| |
| @Override |
| public int getRowOffset() { |
| return 0; |
| } |
| |
| @Override |
| public short getRowLength() { |
| return ByteBufferUtils.toShort(this.buf, this.offset + KeyValue.ROW_OFFSET); |
| } |
| |
| @Override |
| public byte[] getFamilyArray() { |
| return CellUtil.cloneFamily(this); |
| } |
| |
| @Override |
| public int getFamilyOffset() { |
| return 0; |
| } |
| |
| @Override |
| public byte getFamilyLength() { |
| return getFamilyLength(getFamilyLengthPosition()); |
| } |
| |
| int getFamilyLengthPosition() { |
| return getFamilyLengthPosition(getRowLength()); |
| } |
| |
| int getFamilyLengthPosition(int rowLength) { |
| return this.offset + KeyValue.ROW_KEY_OFFSET + rowLength; |
| } |
| |
| byte getFamilyLength(int famLenPos) { |
| return ByteBufferUtils.toByte(this.buf, famLenPos); |
| } |
| |
| @Override |
| public byte[] getQualifierArray() { |
| return CellUtil.cloneQualifier(this); |
| } |
| |
| @Override |
| public int getQualifierOffset() { |
| return 0; |
| } |
| |
| @Override |
| public int getQualifierLength() { |
| return getQualifierLength(getKeyLength(), getRowLength(), getFamilyLength()); |
| } |
| |
| int getQualifierLength(int keyLength, int rlength, int flength) { |
| return keyLength - (int) KeyValue.getKeyDataStructureSize(rlength, flength, 0); |
| } |
| |
| @Override |
| public long getTimestamp() { |
| return getTimestamp(getKeyLength()); |
| } |
| |
| long getTimestamp(int keyLength) { |
| int offset = getTimestampOffset(keyLength); |
| return ByteBufferUtils.toLong(this.buf, offset); |
| } |
| |
| int getKeyLength() { |
| return ByteBufferUtils.toInt(this.buf, this.offset); |
| } |
| |
| private int getTimestampOffset(int keyLen) { |
| return this.offset + KeyValue.ROW_OFFSET + keyLen - KeyValue.TIMESTAMP_TYPE_SIZE; |
| } |
| |
| @Override |
| public byte getTypeByte() { |
| return getTypeByte(getKeyLength()); |
| } |
| |
| byte getTypeByte(int keyLen) { |
| return ByteBufferUtils.toByte(this.buf, this.offset + keyLen - 1 + KeyValue.ROW_OFFSET); |
| } |
| |
| @Override |
| public long getSequenceId() { |
| return this.seqId; |
| } |
| |
| @Override |
| public void setSequenceId(long seqId) { |
| this.seqId = seqId; |
| } |
| |
| @Override |
| public byte[] getValueArray() { |
| return CellUtil.cloneValue(this); |
| } |
| |
| @Override |
| public int getValueOffset() { |
| return 0; |
| } |
| |
| @Override |
| public int getValueLength() { |
| return ByteBufferUtils.toInt(this.buf, this.offset + Bytes.SIZEOF_INT); |
| } |
| |
| @Override |
| public byte[] getTagsArray() { |
| return PrivateCellUtil.cloneTags(this); |
| } |
| |
| @Override |
| public int getTagsOffset() { |
| return 0; |
| } |
| |
| @Override |
| public int getTagsLength() { |
| int tagsLen = this.length - (getKeyLength() + getValueLength() |
| + KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE); |
| if (tagsLen > 0) { |
| // There are some Tag bytes in the byte[]. So reduce 2 bytes which is |
| // added to denote the tags |
| // length |
| tagsLen -= KeyValue.TAGS_LENGTH_SIZE; |
| } |
| return tagsLen; |
| } |
| |
| @Override |
| public ByteBuffer getRowByteBuffer() { |
| return this.buf; |
| } |
| |
| @Override |
| public int getRowPosition() { |
| return this.offset + KeyValue.ROW_KEY_OFFSET; |
| } |
| |
| @Override |
| public ByteBuffer getFamilyByteBuffer() { |
| return this.buf; |
| } |
| |
| @Override |
| public int getFamilyPosition() { |
| return getFamilyPosition(getFamilyLengthPosition()); |
| } |
| |
| public int getFamilyPosition(int familyLengthPosition) { |
| return familyLengthPosition + Bytes.SIZEOF_BYTE; |
| } |
| |
| @Override |
| public ByteBuffer getQualifierByteBuffer() { |
| return this.buf; |
| } |
| |
| @Override |
| public int getQualifierPosition() { |
| return getQualifierPosition(getFamilyPosition(), getFamilyLength()); |
| } |
| |
| int getQualifierPosition(int familyPosition, int familyLength) { |
| return familyPosition + familyLength; |
| } |
| |
| @Override |
| public ByteBuffer getValueByteBuffer() { |
| return this.buf; |
| } |
| |
| @Override |
| public int getValuePosition() { |
| return this.offset + KeyValue.ROW_OFFSET + getKeyLength(); |
| } |
| |
| @Override |
| public ByteBuffer getTagsByteBuffer() { |
| return this.buf; |
| } |
| |
| @Override |
| public int getTagsPosition() { |
| int tagsLen = getTagsLength(); |
| if (tagsLen == 0) { |
| return this.offset + this.length; |
| } |
| return this.offset + this.length - tagsLen; |
| } |
| |
| @Override |
| public long heapSize() { |
| if (this.buf.hasArray()) { |
| return ClassSize.align(FIXED_OVERHEAD + length); |
| } |
| return ClassSize.align(FIXED_OVERHEAD) + this.getSerializedSize(); |
| } |
| |
| @Override |
| public int write(OutputStream out, boolean withTags) throws IOException { |
| int length = getSerializedSize(withTags); |
| ByteBufferUtils.copyBufferToStream(out, this.buf, this.offset, length); |
| return length; |
| } |
| |
| @Override |
| public int getSerializedSize(boolean withTags) { |
| if (withTags) { |
| return this.length; |
| } |
| return getKeyLength() + this.getValueLength() + KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE; |
| } |
| |
| @Override |
| public int getSerializedSize() { |
| return this.length; |
| } |
| |
| @Override |
| public void write(ByteBuffer buf, int offset) { |
| ByteBufferUtils.copyFromBufferToBuffer(this.buf, buf, this.offset, offset, this.length); |
| } |
| |
| @Override |
| public String toString() { |
| return CellUtil.toString(this, true); |
| } |
| |
| @Override |
| public void setTimestamp(long ts) throws IOException { |
| ByteBufferUtils.copyFromArrayToBuffer(this.buf, this.getTimestampOffset(), Bytes.toBytes(ts), 0, |
| Bytes.SIZEOF_LONG); |
| } |
| |
| private int getTimestampOffset() { |
| return this.offset + KeyValue.KEYVALUE_INFRASTRUCTURE_SIZE |
| + getKeyLength() - KeyValue.TIMESTAMP_TYPE_SIZE; |
| } |
| |
| @Override |
| public void setTimestamp(byte[] ts) throws IOException { |
| ByteBufferUtils.copyFromArrayToBuffer(this.buf, this.getTimestampOffset(), ts, 0, |
| Bytes.SIZEOF_LONG); |
| } |
| |
| @Override |
| public ExtendedCell deepClone() { |
| byte[] copy = new byte[this.length]; |
| ByteBufferUtils.copyFromBufferToArray(copy, this.buf, this.offset, 0, this.length); |
| KeyValue kv = new KeyValue(copy, 0, copy.length); |
| kv.setSequenceId(this.getSequenceId()); |
| return kv; |
| } |
| |
| /** |
| * Needed doing 'contains' on List. Only compares the key portion, not the value. |
| */ |
| @Override |
| public boolean equals(Object other) { |
| if (!(other instanceof Cell)) { |
| return false; |
| } |
| return CellUtil.equals(this, (Cell) other); |
| } |
| |
| /** |
| * In line with {@link #equals(Object)}, only uses the key portion, not the value. |
| */ |
| @Override |
| public int hashCode() { |
| return calculateHashForKey(this); |
| } |
| |
| private int calculateHashForKey(ByteBufferExtendedCell cell) { |
| int rowHash = ByteBufferUtils.hashCode(cell.getRowByteBuffer(), cell.getRowPosition(), |
| cell.getRowLength()); |
| int familyHash = ByteBufferUtils.hashCode(cell.getFamilyByteBuffer(), cell.getFamilyPosition(), |
| cell.getFamilyLength()); |
| int qualifierHash = ByteBufferUtils.hashCode(cell.getQualifierByteBuffer(), |
| cell.getQualifierPosition(), cell.getQualifierLength()); |
| |
| int hash = 31 * rowHash + familyHash; |
| hash = 31 * hash + qualifierHash; |
| hash = 31 * hash + (int) cell.getTimestamp(); |
| hash = 31 * hash + cell.getTypeByte(); |
| return hash; |
| } |
| } |