1 /*
2  * Copyright (C) 2007 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.database.sqlite;
18 
19 import android.database.Cursor;
20 import android.database.sqlite.SQLiteDatabase.CursorFactory;
21 import android.os.CancellationSignal;
22 
23 /**
24  * A cursor driver that uses the given query directly.
25  *
26  * @hide
27  */
28 public final class SQLiteDirectCursorDriver implements SQLiteCursorDriver {
29     private final SQLiteDatabase mDatabase;
30     private final String mEditTable;
31     private final String mSql;
32     private final CancellationSignal mCancellationSignal;
33     private SQLiteQuery mQuery;
34 
SQLiteDirectCursorDriver(SQLiteDatabase db, String sql, String editTable, CancellationSignal cancellationSignal)35     public SQLiteDirectCursorDriver(SQLiteDatabase db, String sql, String editTable,
36             CancellationSignal cancellationSignal) {
37         mDatabase = db;
38         mEditTable = editTable;
39         mSql = sql;
40         mCancellationSignal = cancellationSignal;
41     }
42 
query(CursorFactory factory, String[] selectionArgs)43     public Cursor query(CursorFactory factory, String[] selectionArgs) {
44         final SQLiteQuery query = new SQLiteQuery(mDatabase, mSql, mCancellationSignal);
45         final Cursor cursor;
46         try {
47             query.bindAllArgsAsStrings(selectionArgs);
48 
49             if (factory == null) {
50                 cursor = new SQLiteCursor(this, mEditTable, query);
51             } else {
52                 cursor = factory.newCursor(mDatabase, this, mEditTable, query);
53             }
54         } catch (RuntimeException ex) {
55             query.close();
56             throw ex;
57         }
58 
59         mQuery = query;
60         return cursor;
61     }
62 
cursorClosed()63     public void cursorClosed() {
64         // Do nothing
65     }
66 
setBindArguments(String[] bindArgs)67     public void setBindArguments(String[] bindArgs) {
68         mQuery.bindAllArgsAsStrings(bindArgs);
69     }
70 
cursorDeactivated()71     public void cursorDeactivated() {
72         // Do nothing
73     }
74 
cursorRequeried(Cursor cursor)75     public void cursorRequeried(Cursor cursor) {
76         // Do nothing
77     }
78 
79     @Override
toString()80     public String toString() {
81         return "SQLiteDirectCursorDriver: " + mSql;
82     }
83 }
84