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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/*
* Copyright (C) 2023 The Android Open Source Project
*
* 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.android.server.deviceconfig.db;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.text.TextUtils;
import com.android.server.deviceconfig.db.DeviceConfigDbHelper.Contract.DeviceConfigEntry;
import java.util.HashMap;
import java.util.Map;
/**
* @hide
*/
public class DeviceConfigDbAdapter {
private final SQLiteDatabase mDb;
public DeviceConfigDbAdapter(SQLiteDatabase db) {
mDb = db;
}
public Map<String, String> getValuesForNamespace(String namespace, String... keys) {
String[] projection = {
DeviceConfigEntry.COLUMN_NAME_KEY,
DeviceConfigEntry.COLUMN_NAME_VALUE
};
String selection;
String[] selectionArgs;
if (keys != null && keys.length > 0) {
selection = DeviceConfigEntry.COLUMN_NAME_NAMESPACE + " = ? "
+ "and " + DeviceConfigEntry.COLUMN_NAME_KEY + " in ( ? ) ";
String keySelection = TextUtils.join(",", keys);
selectionArgs = new String[]{namespace, keySelection};
} else {
selection = DeviceConfigEntry.COLUMN_NAME_NAMESPACE + " = ?";
selectionArgs = new String[]{namespace};
}
Cursor cursor = mDb.query(
DeviceConfigEntry.TABLE_NAME,
projection,
selection,
selectionArgs,
null,
null,
null
);
Map<String, String> map = new HashMap<>(cursor.getCount());
while (cursor.moveToNext()) {
String key = cursor.getString(
cursor.getColumnIndexOrThrow(DeviceConfigEntry.COLUMN_NAME_KEY));
String value = cursor.getString(
cursor.getColumnIndexOrThrow(DeviceConfigEntry.COLUMN_NAME_VALUE));
map.put(key, value);
}
cursor.close();
return map;
}
/**
*
* @return true if the data was inserted or updated in the database
*/
private boolean insertOrUpdateValue_inTransaction(String namespace, String key, String value) {
// TODO(b/265948914): see if this is the most performant way to either insert or update a record
ContentValues values = new ContentValues();
values.put(DeviceConfigEntry.COLUMN_NAME_NAMESPACE, namespace);
values.put(DeviceConfigEntry.COLUMN_NAME_KEY, key);
values.put(DeviceConfigEntry.COLUMN_NAME_VALUE, value);
String where = DeviceConfigEntry.COLUMN_NAME_NAMESPACE + " = ? "
+ "and " + DeviceConfigEntry.COLUMN_NAME_VALUE + " = ? ";
String[] whereArgs = {namespace, key};
int updatedRows = mDb.update(DeviceConfigEntry.TABLE_NAME, values, where, whereArgs);
if (updatedRows == 0) {
// this is a new row, we need to insert it
long id = mDb.insert(DeviceConfigEntry.TABLE_NAME, null, values);
return id != -1;
}
return updatedRows > 0;
}
/**
* Set or update the values in the map into the namespace.
*
* @return true if all values were set. Returns true if the map is empty.
*/
public boolean setValues(String namespace, Map<String, String> map) {
if (map.size() == 0) {
return true;
}
boolean allSucceeded = true;
try {
mDb.beginTransaction();
for (Map.Entry<String, String> entry : map.entrySet()) {
// TODO(b/265948914) probably should call yieldIfContendedSafely in this loop
allSucceeded &= insertOrUpdateValue_inTransaction(namespace, entry.getKey(),
entry.getValue());
}
mDb.setTransactionSuccessful();
} finally {
mDb.endTransaction();
}
return allSucceeded;
}
/**
*
* @return true if the value was set
*/
public boolean setValue(String namespace, String key, String value, boolean makeDefault) {
HashMap<String, String> map = new HashMap<>();
map.put(key, value);
return setValues(namespace, map);
// TODO(b/265948914) implement make default!
}
/**
*
* @return true if any value was deleted
*/
public boolean deleteValue(String namespace, String key) {
String where = DeviceConfigEntry.COLUMN_NAME_NAMESPACE + " = ? "
+ "and " + DeviceConfigEntry.COLUMN_NAME_KEY + " = ? ";
String[] whereArgs = { namespace, key };
int count = mDb.delete(DeviceConfigEntry.TABLE_NAME, where, whereArgs);
return count > 0;
}
}
|
