| /* |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.rest.model; |
| |
| import java.io.IOException; |
| import java.io.Serializable; |
| |
| import javax.xml.bind.annotation.XmlAttribute; |
| import javax.xml.bind.annotation.XmlRootElement; |
| import javax.xml.bind.annotation.XmlValue; |
| |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.rest.ProtobufMessageHandler; |
| import org.apache.hadoop.hbase.rest.protobuf.generated.CellMessage.Cell; |
| |
| import com.google.protobuf.ByteString; |
| |
| /** |
| * Representation of a cell. A cell is a single value associated a column and |
| * optional qualifier, and either the timestamp when it was stored or the user- |
| * provided timestamp if one was explicitly supplied. |
| * |
| * <pre> |
| * <complexType name="Cell"> |
| * <sequence> |
| * <element name="value" maxOccurs="1" minOccurs="1"> |
| * <simpleType> |
| * <restriction base="base64Binary"/> |
| * </simpleType> |
| * </element> |
| * </sequence> |
| * <attribute name="column" type="base64Binary" /> |
| * <attribute name="timestamp" type="int" /> |
| * </complexType> |
| * </pre> |
| */ |
| @XmlRootElement(name="Cell") |
| public class CellModel implements ProtobufMessageHandler, Serializable { |
| private static final long serialVersionUID = 1L; |
| |
| private long timestamp = HConstants.LATEST_TIMESTAMP; |
| private byte[] column; |
| private byte[] value; |
| |
| /** |
| * Default constructor |
| */ |
| public CellModel() {} |
| |
| /** |
| * Constructor |
| * @param column |
| * @param value |
| */ |
| public CellModel(byte[] column, byte[] value) { |
| this(column, HConstants.LATEST_TIMESTAMP, value); |
| } |
| |
| /** |
| * Constructor |
| * @param column |
| * @param qualifier |
| * @param value |
| */ |
| public CellModel(byte[] column, byte[] qualifier, byte[] value) { |
| this(column, qualifier, HConstants.LATEST_TIMESTAMP, value); |
| } |
| |
| /** |
| * Constructor from KeyValue |
| * @param kv |
| */ |
| public CellModel(KeyValue kv) { |
| this(kv.getFamily(), kv.getQualifier(), kv.getTimestamp(), kv.getValue()); |
| } |
| |
| /** |
| * Constructor |
| * @param column |
| * @param timestamp |
| * @param value |
| */ |
| public CellModel(byte[] column, long timestamp, byte[] value) { |
| this.column = column; |
| this.timestamp = timestamp; |
| this.value = value; |
| } |
| |
| /** |
| * Constructor |
| * @param column |
| * @param qualifier |
| * @param timestamp |
| * @param value |
| */ |
| public CellModel(byte[] column, byte[] qualifier, long timestamp, |
| byte[] value) { |
| this.column = KeyValue.makeColumn(column, qualifier); |
| this.timestamp = timestamp; |
| this.value = value; |
| } |
| |
| /** |
| * @return the column |
| */ |
| @XmlAttribute |
| public byte[] getColumn() { |
| return column; |
| } |
| |
| /** |
| * @param column the column to set |
| */ |
| public void setColumn(byte[] column) { |
| this.column = column; |
| } |
| |
| /** |
| * @return true if the timestamp property has been specified by the |
| * user |
| */ |
| public boolean hasUserTimestamp() { |
| return timestamp != HConstants.LATEST_TIMESTAMP; |
| } |
| |
| /** |
| * @return the timestamp |
| */ |
| @XmlAttribute |
| public long getTimestamp() { |
| return timestamp; |
| } |
| |
| /** |
| * @param timestamp the timestamp to set |
| */ |
| public void setTimestamp(long timestamp) { |
| this.timestamp = timestamp; |
| } |
| |
| /** |
| * @return the value |
| */ |
| @XmlValue |
| public byte[] getValue() { |
| return value; |
| } |
| |
| /** |
| * @param value the value to set |
| */ |
| public void setValue(byte[] value) { |
| this.value = value; |
| } |
| |
| @Override |
| public byte[] createProtobufOutput() { |
| Cell.Builder builder = Cell.newBuilder(); |
| builder.setColumn(ByteString.copyFrom(getColumn())); |
| builder.setData(ByteString.copyFrom(getValue())); |
| if (hasUserTimestamp()) { |
| builder.setTimestamp(getTimestamp()); |
| } |
| return builder.build().toByteArray(); |
| } |
| |
| @Override |
| public ProtobufMessageHandler getObjectFromMessage(byte[] message) |
| throws IOException { |
| Cell.Builder builder = Cell.newBuilder(); |
| builder.mergeFrom(message); |
| setColumn(builder.getColumn().toByteArray()); |
| setValue(builder.getData().toByteArray()); |
| if (builder.hasTimestamp()) { |
| setTimestamp(builder.getTimestamp()); |
| } |
| return this; |
| } |
| } |