-
Notifications
You must be signed in to change notification settings - Fork 81
/
WriteIncrement.java
52 lines (44 loc) · 2.02 KB
/
WriteIncrement.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/*
* Copyright 2019 Google LLC
*
* Licensed 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 com.example.bigtable;
// [START bigtable_writes_increment]
import com.google.cloud.bigtable.data.v2.BigtableDataClient;
import com.google.cloud.bigtable.data.v2.models.ReadModifyWriteRow;
import com.google.cloud.bigtable.data.v2.models.Row;
import com.google.cloud.bigtable.data.v2.models.TableId;
import java.nio.charset.Charset;
public class WriteIncrement {
private static final String COLUMN_FAMILY_NAME = "stats_summary";
public static void writeIncrement(String projectId, String instanceId, String tableId) {
// String projectId = "my-project-id";
// String instanceId = "my-instance-id";
// String tableId = "mobile-time-series";
try (BigtableDataClient dataClient = BigtableDataClient.create(projectId, instanceId)) {
// Get an existing row that has a cell with an incrementable value. A value can be incremented
// if it is encoded as a 64-bit big-endian signed integer.
String rowkey = "phone#4c410523#20190501";
ReadModifyWriteRow mutation =
ReadModifyWriteRow.create(TableId.of(tableId), rowkey)
.increment(COLUMN_FAMILY_NAME, "connected_cell", -1);
Row success = dataClient.readModifyWriteRow(mutation);
System.out.printf(
"Successfully updated row %s", success.getKey().toString(Charset.defaultCharset()));
} catch (Exception e) {
System.out.println("Error during WriteIncrement: \n" + e.toString());
}
}
}
// [END bigtable_writes_increment]