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Never store reference to SQLiteDatabase

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SQLiteDatabase closes automatically at random times. Storing a reference
to an open SQLiteDatabase eventually leads to a crash.
See: https://stackoverflow.com/questions/1483629/
This commit is contained in:
Alinson S. Xavier
2017-07-18 22:07:21 -04:00
parent 9fe446b424
commit 91996924d9
3 changed files with 31 additions and 49 deletions
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31
app/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteCheckmarkList.java
View File

@@ -53,38 +53,27 @@ public class SQLiteCheckmarkList extends CheckmarkList
@Nullable
private CachedData cache;
@NonNull
private final SQLiteStatement invalidateStatement;
@NonNull
private final SQLiteStatement addStatement;
@NonNull
private final SQLiteDatabase db;
public SQLiteCheckmarkList(Habit habit)
{
super(habit);
sqlite = new SQLiteUtils<>(CheckmarkRecord.class);
db = Cache.openDatabase();
addStatement = db.compileStatement(ADD_QUERY);
invalidateStatement = db.compileStatement(INVALIDATE_QUERY);
}
@Override
public void add(List<Checkmark> checkmarks)
{
check(habit.getId());
SQLiteDatabase db = Cache.openDatabase();
SQLiteStatement statement = db.compileStatement(ADD_QUERY);
db.beginTransaction();
try
{
for (Checkmark c : checkmarks)
{
addStatement.bindLong(1, habit.getId());
addStatement.bindLong(2, c.getTimestamp());
addStatement.bindLong(3, c.getValue());
addStatement.execute();
statement.bindLong(1, habit.getId());
statement.bindLong(2, c.getTimestamp());
statement.bindLong(3, c.getValue());
statement.execute();
}
db.setTransactionSuccessful();
@@ -132,9 +121,11 @@ public class SQLiteCheckmarkList extends CheckmarkList
public void invalidateNewerThan(long timestamp)
{
cache = null;
invalidateStatement.bindLong(1, habit.getId());
invalidateStatement.bindLong(2, timestamp);
invalidateStatement.execute();
SQLiteDatabase db = Cache.openDatabase();
SQLiteStatement statement = db.compileStatement(INVALIDATE_QUERY);
statement.bindLong(1, habit.getId());
statement.bindLong(2, timestamp);
statement.execute();
observable.notifyListeners();
}

30
app/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteScoreList.java
View File

@@ -49,14 +49,6 @@ public class SQLiteScoreList extends ScoreList
@NonNull
private final SQLiteUtils<ScoreRecord> sqlite;
@NonNull
private final SQLiteStatement invalidateStatement;
@NonNull
private final SQLiteStatement addStatement;
private final SQLiteDatabase db;
@Nullable
private CachedData cache = null;
@@ -69,25 +61,23 @@ public class SQLiteScoreList extends ScoreList
{
super(habit);
sqlite = new SQLiteUtils<>(ScoreRecord.class);
db = Cache.openDatabase();
addStatement = db.compileStatement(ADD_QUERY);
invalidateStatement = db.compileStatement(INVALIDATE_QUERY);
}
@Override
public void add(List<Score> scores)
{
check(habit.getId());
SQLiteDatabase db = Cache.openDatabase();
SQLiteStatement statement = db.compileStatement(ADD_QUERY);
db.beginTransaction();
try
{
for (Score s : scores)
{
addStatement.bindLong(1, habit.getId());
addStatement.bindLong(2, s.getTimestamp());
addStatement.bindLong(3, s.getValue());
addStatement.execute();
statement.bindLong(1, habit.getId());
statement.bindLong(2, s.getTimestamp());
statement.bindLong(3, s.getValue());
statement.execute();
}
db.setTransactionSuccessful();
@@ -150,9 +140,11 @@ public class SQLiteScoreList extends ScoreList
public synchronized void invalidateNewerThan(long timestamp)
{
cache = null;
invalidateStatement.bindLong(1, habit.getId());
invalidateStatement.bindLong(2, timestamp);
invalidateStatement.execute();
SQLiteDatabase db = Cache.openDatabase();
SQLiteStatement statement = db.compileStatement(INVALIDATE_QUERY);
statement.bindLong(1, habit.getId());
statement.bindLong(2, timestamp);
statement.execute();
getObservable().notifyListeners();
}

19
app/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteStreakList.java
View File

@@ -37,22 +37,19 @@ import java.util.*;
*/
public class SQLiteStreakList extends StreakList
{
private static final String INVALIDATE_QUERY =
"delete from Streak where habit = ? and end >= ?";
private HabitRecord habitRecord;
@NonNull
private final SQLiteUtils<StreakRecord> sqlite;
private final SQLiteStatement invalidateStatement;
public SQLiteStreakList(Habit habit)
{
super(habit);
sqlite = new SQLiteUtils<>(StreakRecord.class);
SQLiteDatabase db = Cache.openDatabase();
String invalidateQuery = "delete from Streak where habit = ? " +
"and end >= ?";
invalidateStatement = db.compileStatement(invalidateQuery);
}
@Override
@@ -81,9 +78,11 @@ public class SQLiteStreakList extends StreakList
@Override
public void invalidateNewerThan(long timestamp)
{
invalidateStatement.bindLong(1, habit.getId());
invalidateStatement.bindLong(2, timestamp - DateUtils.millisecondsInOneDay);
invalidateStatement.execute();
SQLiteDatabase db = Cache.openDatabase();
SQLiteStatement statement = db.compileStatement(INVALIDATE_QUERY);
statement.bindLong(1, habit.getId());
statement.bindLong(2, timestamp - DateUtils.millisecondsInOneDay);
statement.execute();
observable.notifyListeners();
}