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