| /* |
| * 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 static org.apache.hadoop.hbase.KeyValue.COLUMN_FAMILY_DELIMITER; |
| |
| import com.fasterxml.jackson.annotation.JsonIgnore; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import javax.xml.bind.annotation.XmlAccessType; |
| import javax.xml.bind.annotation.XmlAccessorType; |
| import javax.xml.bind.annotation.XmlAttribute; |
| import javax.xml.bind.annotation.XmlRootElement; |
| import javax.xml.bind.annotation.XmlValue; |
| import org.apache.commons.lang3.builder.EqualsBuilder; |
| import org.apache.commons.lang3.builder.HashCodeBuilder; |
| import org.apache.commons.lang3.builder.ToStringBuilder; |
| import org.apache.hadoop.hbase.CellUtil; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.rest.ProtobufMessageHandler; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations; |
| |
| import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil; |
| import org.apache.hadoop.hbase.shaded.rest.protobuf.generated.CellMessage.Cell; |
| |
| /** |
| * 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") |
| @XmlAccessorType(XmlAccessType.NONE) |
| @InterfaceAudience.Private |
| public class CellModel implements ProtobufMessageHandler, Serializable { |
| private static final long serialVersionUID = 1L; |
| public static final int MAGIC_LENGTH = -1; |
| |
| @JsonProperty("column") |
| @XmlAttribute |
| private byte[] column; |
| |
| @JsonProperty("timestamp") |
| @XmlAttribute |
| private long timestamp = HConstants.LATEST_TIMESTAMP; |
| |
| // If valueLength = -1, this represents the cell's value. |
| // If valueLength <> 1, this represents an array containing the cell's value as determined by |
| // offset and length. |
| private byte[] value; |
| |
| @JsonIgnore |
| private int valueOffset; |
| |
| @JsonIgnore |
| private int valueLength = MAGIC_LENGTH; |
| |
| /** |
| * Default constructor |
| */ |
| public CellModel() { |
| } |
| |
| /** |
| * Constructor |
| */ |
| public CellModel(byte[] column, byte[] value) { |
| this(column, HConstants.LATEST_TIMESTAMP, value); |
| } |
| |
| /** |
| * Constructor |
| */ |
| public CellModel(byte[] column, byte[] qualifier, byte[] value) { |
| this(column, qualifier, HConstants.LATEST_TIMESTAMP, value); |
| } |
| |
| /** |
| * Constructor from KeyValue This avoids copying the value from the cell, and tries to optimize |
| * generating the column value. |
| */ |
| public CellModel(org.apache.hadoop.hbase.Cell cell) { |
| this.column = makeColumn(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength(), |
| cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength()); |
| this.timestamp = cell.getTimestamp(); |
| this.value = cell.getValueArray(); |
| this.valueOffset = cell.getValueOffset(); |
| this.valueLength = cell.getValueLength(); |
| } |
| |
| /** |
| * Constructor |
| */ |
| public CellModel(byte[] column, long timestamp, byte[] value) { |
| this.column = column; |
| this.timestamp = timestamp; |
| setValue(value); |
| } |
| |
| /** |
| * Constructor |
| */ |
| public CellModel(byte[] family, byte[] qualifier, long timestamp, byte[] value) { |
| this.column = CellUtil.makeColumn(family, qualifier); |
| this.timestamp = timestamp; |
| setValue(value); |
| } |
| |
| /** Returns the column */ |
| public byte[] getColumn() { |
| return column; |
| } |
| |
| /** |
| * @param column the column to set |
| */ |
| public void setColumn(byte[] column) { |
| this.column = column; |
| } |
| |
| /** Returns true if the timestamp property has been specified by the user */ |
| public boolean hasUserTimestamp() { |
| return timestamp != HConstants.LATEST_TIMESTAMP; |
| } |
| |
| /** Returns the timestamp */ |
| public long getTimestamp() { |
| return timestamp; |
| } |
| |
| /** |
| * @param timestamp the timestamp to set |
| */ |
| public void setTimestamp(long timestamp) { |
| this.timestamp = timestamp; |
| } |
| |
| /** Returns the value */ |
| @JsonProperty("$") |
| @XmlValue |
| public byte[] getValue() { |
| if (valueLength == MAGIC_LENGTH) { |
| return value; |
| } else { |
| byte[] retValue = new byte[valueLength]; |
| System.arraycopy(value, valueOffset, retValue, 0, valueLength); |
| return retValue; |
| } |
| } |
| |
| /** Returns the backing array for value (may be the same as value) */ |
| public byte[] getValueArray() { |
| return value; |
| } |
| |
| /** |
| * @param value the value to set |
| */ |
| @JsonProperty("$") |
| public void setValue(byte[] value) { |
| this.value = value; |
| this.valueLength = MAGIC_LENGTH; |
| } |
| |
| public int getValueOffset() { |
| return valueOffset; |
| } |
| |
| public int getValueLength() { |
| return valueLength; |
| } |
| |
| @Override |
| public byte[] createProtobufOutput() { |
| Cell.Builder builder = Cell.newBuilder(); |
| builder.setColumn(UnsafeByteOperations.unsafeWrap(getColumn())); |
| if (valueLength == MAGIC_LENGTH) { |
| builder.setData(UnsafeByteOperations.unsafeWrap(getValue())); |
| } else { |
| builder.setData(UnsafeByteOperations.unsafeWrap(value, valueOffset, valueLength)); |
| } |
| if (hasUserTimestamp()) { |
| builder.setTimestamp(getTimestamp()); |
| } |
| return builder.build().toByteArray(); |
| } |
| |
| @Override |
| public ProtobufMessageHandler getObjectFromMessage(byte[] message) throws IOException { |
| Cell.Builder builder = Cell.newBuilder(); |
| ProtobufUtil.mergeFrom(builder, message); |
| setColumn(builder.getColumn().toByteArray()); |
| setValue(builder.getData().toByteArray()); |
| if (builder.hasTimestamp()) { |
| setTimestamp(builder.getTimestamp()); |
| } |
| return this; |
| } |
| |
| /** |
| * Makes a column in family:qualifier form from separate byte arrays with offset and length. |
| * <p> |
| * Not recommended for usage as this is old-style API. |
| * @return family:qualifier |
| */ |
| public static byte[] makeColumn(byte[] family, int familyOffset, int familyLength, |
| byte[] qualifier, int qualifierOffset, int qualifierLength) { |
| byte[] column = new byte[familyLength + qualifierLength + 1]; |
| System.arraycopy(family, familyOffset, column, 0, familyLength); |
| column[familyLength] = COLUMN_FAMILY_DELIMITER; |
| System.arraycopy(qualifier, qualifierOffset, column, familyLength + 1, qualifierLength); |
| return column; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null) { |
| return false; |
| } |
| if (obj == this) { |
| return true; |
| } |
| if (obj.getClass() != getClass()) { |
| return false; |
| } |
| CellModel cellModel = (CellModel) obj; |
| return new EqualsBuilder().append(column, cellModel.column) |
| .append(timestamp, cellModel.timestamp).append(getValue(), cellModel.getValue()).isEquals(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return new HashCodeBuilder().append(column).append(timestamp).append(getValue()).toHashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return new ToStringBuilder(this).append("column", column).append("timestamp", timestamp) |
| .append("value", getValue()).toString(); |
| } |
| } |