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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* Copyright (C) 2006 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 android.database.sqlite;
import android.annotation.UnsupportedAppUsage;
import android.os.ParcelFileDescriptor;
/**
* Represents a statement that can be executed against a database. The statement
* cannot return multiple rows or columns, but single value (1 x 1) result sets
* are supported.
* <p>
* This class is not thread-safe.
* </p>
*/
public final class SQLiteStatement extends SQLiteProgram {
@UnsupportedAppUsage
SQLiteStatement(SQLiteDatabase db, String sql, Object[] bindArgs) {
super(db, sql, bindArgs, null);
}
/**
* Execute this SQL statement, if it is not a SELECT / INSERT / DELETE / UPDATE, for example
* CREATE / DROP table, view, trigger, index etc.
*
* @throws android.database.SQLException If the SQL string is invalid for
* some reason
*/
public void execute() {
acquireReference();
try {
getSession().execute(getSql(), getBindArgs(), getConnectionFlags(), null);
} catch (SQLiteDatabaseCorruptException ex) {
onCorruption();
throw ex;
} finally {
releaseReference();
}
}
/**
* Execute this SQL statement, if the number of rows affected by execution of this SQL
* statement is of any importance to the caller - for example, UPDATE / DELETE SQL statements.
*
* @return the number of rows affected by this SQL statement execution.
* @throws android.database.SQLException If the SQL string is invalid for
* some reason
*/
public int executeUpdateDelete() {
acquireReference();
try {
return getSession().executeForChangedRowCount(
getSql(), getBindArgs(), getConnectionFlags(), null);
} catch (SQLiteDatabaseCorruptException ex) {
onCorruption();
throw ex;
} finally {
releaseReference();
}
}
/**
* Execute this SQL statement and return the ID of the row inserted due to this call.
* The SQL statement should be an INSERT for this to be a useful call.
*
* @return the row ID of the last row inserted, if this insert is successful. -1 otherwise.
*
* @throws android.database.SQLException If the SQL string is invalid for
* some reason
*/
public long executeInsert() {
acquireReference();
try {
return getSession().executeForLastInsertedRowId(
getSql(), getBindArgs(), getConnectionFlags(), null);
} catch (SQLiteDatabaseCorruptException ex) {
onCorruption();
throw ex;
} finally {
releaseReference();
}
}
/**
* Execute a statement that returns a 1 by 1 table with a numeric value.
* For example, SELECT COUNT(*) FROM table;
*
* @return The result of the query.
*
* @throws android.database.sqlite.SQLiteDoneException if the query returns zero rows
*/
public long simpleQueryForLong() {
acquireReference();
try {
return getSession().executeForLong(
getSql(), getBindArgs(), getConnectionFlags(), null);
} catch (SQLiteDatabaseCorruptException ex) {
onCorruption();
throw ex;
} finally {
releaseReference();
}
}
/**
* Execute a statement that returns a 1 by 1 table with a text value.
* For example, SELECT COUNT(*) FROM table;
*
* @return The result of the query.
*
* @throws android.database.sqlite.SQLiteDoneException if the query returns zero rows
*/
public String simpleQueryForString() {
acquireReference();
try {
return getSession().executeForString(
getSql(), getBindArgs(), getConnectionFlags(), null);
} catch (SQLiteDatabaseCorruptException ex) {
onCorruption();
throw ex;
} finally {
releaseReference();
}
}
/**
* Executes a statement that returns a 1 by 1 table with a blob value.
*
* @return A read-only file descriptor for a copy of the blob value, or {@code null}
* if the value is null or could not be read for some reason.
*
* @throws android.database.sqlite.SQLiteDoneException if the query returns zero rows
*/
public ParcelFileDescriptor simpleQueryForBlobFileDescriptor() {
acquireReference();
try {
return getSession().executeForBlobFileDescriptor(
getSql(), getBindArgs(), getConnectionFlags(), null);
} catch (SQLiteDatabaseCorruptException ex) {
onCorruption();
throw ex;
} finally {
releaseReference();
}
}
@Override
public String toString() {
return "SQLiteProgram: " + getSql();
}
}
|
