Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 1 | package org.onlab.onos.store.service; |
| 2 | |
| 3 | import static com.google.common.base.Preconditions.checkArgument; |
| 4 | |
| 5 | import java.util.Objects; |
| 6 | |
Yuta HIGUCHI | 5e1cfe0 | 2014-11-04 21:22:45 -0800 | [diff] [blame^] | 7 | import com.google.common.base.MoreObjects; |
| 8 | |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 9 | /** |
| 10 | * Database write request. |
| 11 | */ |
| 12 | public class WriteRequest { |
| 13 | |
| 14 | private final String tableName; |
| 15 | private final String key; |
| 16 | private final byte[] newValue; |
| 17 | private final long previousVersion; |
| 18 | private final byte[] oldValue; |
| 19 | |
Yuta HIGUCHI | 3a3ac96 | 2014-11-04 18:05:08 -0800 | [diff] [blame] | 20 | // put regardless of previous value |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 21 | public WriteRequest(String tableName, String key, byte[] newValue) { |
| 22 | this(tableName, key, newValue, -1, null); |
| 23 | } |
| 24 | |
Yuta HIGUCHI | 3a3ac96 | 2014-11-04 18:05:08 -0800 | [diff] [blame] | 25 | // put if version matches |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 26 | public WriteRequest(String tableName, String key, byte[] newValue, long previousVersion) { |
| 27 | this(tableName, key, newValue, previousVersion, null); |
| 28 | checkArgument(previousVersion >= 0); |
| 29 | } |
| 30 | |
Yuta HIGUCHI | 3a3ac96 | 2014-11-04 18:05:08 -0800 | [diff] [blame] | 31 | // put if value matches |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 32 | public WriteRequest(String tableName, String key, byte[] newValue, byte[] oldValue) { |
| 33 | this(tableName, key, newValue, -1, oldValue); |
| 34 | } |
| 35 | |
Yuta HIGUCHI | 3a3ac96 | 2014-11-04 18:05:08 -0800 | [diff] [blame] | 36 | // hidden constructor |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 37 | private WriteRequest(String tableName, String key, byte[] newValue, long previousVersion, byte[] oldValue) { |
| 38 | |
| 39 | checkArgument(tableName != null); |
| 40 | checkArgument(key != null); |
| 41 | checkArgument(newValue != null); |
| 42 | |
| 43 | this.tableName = tableName; |
| 44 | this.key = key; |
| 45 | this.newValue = newValue; |
| 46 | this.previousVersion = previousVersion; |
| 47 | this.oldValue = oldValue; |
| 48 | } |
| 49 | |
| 50 | public String tableName() { |
| 51 | return tableName; |
| 52 | } |
| 53 | |
| 54 | public String key() { |
| 55 | return key; |
| 56 | } |
| 57 | |
| 58 | public byte[] newValue() { |
| 59 | return newValue; |
| 60 | } |
| 61 | |
| 62 | public long previousVersion() { |
| 63 | return previousVersion; |
| 64 | } |
| 65 | |
| 66 | public byte[] oldValue() { |
| 67 | return oldValue; |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public String toString() { |
Yuta HIGUCHI | 5e1cfe0 | 2014-11-04 21:22:45 -0800 | [diff] [blame^] | 72 | return MoreObjects.toStringHelper(getClass()) |
| 73 | .add("tableName", tableName) |
| 74 | .add("key", key) |
| 75 | .add("newValue", newValue) |
| 76 | .add("previousVersion", previousVersion) |
| 77 | .add("oldValue", oldValue) |
| 78 | .toString(); |
Madan Jampani | 08822c4 | 2014-11-04 17:17:46 -0800 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | @Override |
| 82 | public int hashCode() { |
| 83 | return Objects.hash(key, tableName, previousVersion); |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public boolean equals(Object obj) { |
| 88 | if (this == obj) { |
| 89 | return true; |
| 90 | } |
| 91 | if (obj == null) { |
| 92 | return false; |
| 93 | } |
| 94 | if (getClass() != obj.getClass()) { |
| 95 | return false; |
| 96 | } |
| 97 | WriteRequest other = (WriteRequest) obj; |
| 98 | return Objects.equals(this.key, other.key) && |
| 99 | Objects.equals(this.tableName, other.tableName) && |
| 100 | Objects.equals(this.previousVersion, other.previousVersion); |
| 101 | } |
| 102 | } |