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Code Issues Releases Wiki Activity

Fix and vastly simplify the query for the threaded message list

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This requires another database schema change. With this change messages
at the root of a thread reference themselves in the 'threads' table,
i.e. 'root' contains the value of 'id' for these messages. It makes
selecting all messages in a thread much simpler.
This commit is contained in:
cketti 2013-03-08 01:15:26 +01:00
parent 6b3a3f7ee0
commit 658b5dbff6
3 changed files with 82 additions and 104 deletions
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49
src/com/fsck/k9/mail/store/LocalStore.java
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@ -106,27 +106,27 @@ public class LocalStore extends Store implements Serializable {
private static final String[] UID_CHECK_PROJECTION = { "uid" }; private static final String[] UID_CHECK_PROJECTION = { "uid" };
/** /**
* Number of UIDs to check for existence at once. * Maximum number of UIDs to check for existence at once.
* *
* @see LocalFolder#extractNewMessages(List) * @see LocalFolder#extractNewMessages(List)
*/ */
private static final int UID_CHECK_BATCH_SIZE = 500; private static final int UID_CHECK_BATCH_SIZE = 500;
/** /**
* Number of messages to perform flag updates at once. * Maximum number of messages to perform flag updates on at once.
* *
* @see #setFlag(List, Flag, boolean, boolean) * @see #setFlag(List, Flag, boolean, boolean)
*/ */
private static final int FLAG_UPDATE_BATCH_SIZE = 500; private static final int FLAG_UPDATE_BATCH_SIZE = 500;
/** /**
* Number of threads to perform flag updates on at once. * Maximum number of threads to perform flag updates on at once.
* *
* @see #setFlagForThreads(List, Flag, boolean) * @see #setFlagForThreads(List, Flag, boolean)
*/ */
private static final int THREAD_FLAG_UPDATE_BATCH_SIZE = 400; private static final int THREAD_FLAG_UPDATE_BATCH_SIZE = 500;
public static final int DB_VERSION = 47; public static final int DB_VERSION = 48;
public static String getColumnNameForFlag(Flag flag) { public static String getColumnNameForFlag(Flag flag) {
@ -278,6 +278,12 @@ public class LocalStore extends Store implements Serializable {
db.execSQL("DROP INDEX IF EXISTS threads_parent"); db.execSQL("DROP INDEX IF EXISTS threads_parent");
db.execSQL("CREATE INDEX IF NOT EXISTS threads_parent ON threads (parent)"); db.execSQL("CREATE INDEX IF NOT EXISTS threads_parent ON threads (parent)");
db.execSQL("DROP TRIGGER IF EXISTS set_thread_root");
db.execSQL("CREATE TRIGGER set_thread_root " +
"AFTER INSERT ON threads " +
"BEGIN " +
"UPDATE threads SET root=id WHERE root IS NULL AND ROWID = NEW.ROWID; " +
"END");
db.execSQL("DROP TABLE IF EXISTS attachments"); db.execSQL("DROP TABLE IF EXISTS attachments");
db.execSQL("CREATE TABLE attachments (id INTEGER PRIMARY KEY, message_id INTEGER," db.execSQL("CREATE TABLE attachments (id INTEGER PRIMARY KEY, message_id INTEGER,"
@ -650,6 +656,16 @@ public class LocalStore extends Store implements Serializable {
cv.putNull("thread_parent"); cv.putNull("thread_parent");
db.update("messages", cv, null, null); db.update("messages", cv, null, null);
} }
if (db.getVersion() < 48) {
db.execSQL("UPDATE threads SET root=id WHERE root IS NULL");
db.execSQL("CREATE TRIGGER set_thread_root " +
"AFTER INSERT ON threads " +
"BEGIN " +
"UPDATE threads SET root=id WHERE root IS NULL AND ROWID = NEW.ROWID; " +
"END");
}
} }
} catch (SQLiteException e) { } catch (SQLiteException e) {
Log.e(K9.LOG_TAG, "Exception while upgrading database. Resetting the DB to v0"); Log.e(K9.LOG_TAG, "Exception while upgrading database. Resetting the DB to v0");
@ -790,10 +806,7 @@ public class LocalStore extends Store implements Serializable {
// sure the thread structure is in a valid state (this may destroy existing valid // sure the thread structure is in a valid state (this may destroy existing valid
// thread trees, but is much faster than adjusting the tree by removing messages // thread trees, but is much faster than adjusting the tree by removing messages
// one by one). // one by one).
ContentValues cv = new ContentValues(); db.execSQL("UPDATE threads SET root=id, parent=NULL");
cv.putNull("root");
cv.putNull("parent");
db.update("threads", cv, null, null);
// Delete entries from 'messages' table // Delete entries from 'messages' table
db.execSQL("DELETE FROM messages WHERE deleted = 0 AND uid NOT LIKE 'Local%'"); db.execSQL("DELETE FROM messages WHERE deleted = 0 AND uid NOT LIKE 'Local%'");
@ -4193,18 +4206,13 @@ public class LocalStore extends Store implements Serializable {
public void doDbWork(SQLiteDatabase db, String selectionSet, String[] selectionArgs) public void doDbWork(SQLiteDatabase db, String selectionSet, String[] selectionArgs)
throws UnavailableStorageException { throws UnavailableStorageException {
int len = selectionArgs.length;
String[] args = new String[len * 2];
System.arraycopy(selectionArgs, 0, args, 0, len);
System.arraycopy(selectionArgs, 0, args, len, len);
db.execSQL("UPDATE messages SET " + flagColumn + " = " + ((newState) ? "1" : "0") + db.execSQL("UPDATE messages SET " + flagColumn + " = " + ((newState) ? "1" : "0") +
" WHERE id IN (" + " WHERE id IN (" +
"SELECT m.id FROM threads t " + "SELECT m.id FROM threads t " +
"LEFT JOIN messages m ON (t.message_id = m.id) " + "LEFT JOIN messages m ON (t.message_id = m.id) " +
"WHERE (m.empty IS NULL OR m.empty != 1) AND m.deleted = 0 " + "WHERE (m.empty IS NULL OR m.empty != 1) AND m.deleted = 0 " +
"AND (t.id" + selectionSet + " OR t.root" + selectionSet + "))", "AND t.root" + selectionSet + ")",
args); selectionArgs);
} }
@Override @Override
@ -4256,14 +4264,9 @@ public class LocalStore extends Store implements Serializable {
"LEFT JOIN messages m ON (t.message_id = m.id) " + "LEFT JOIN messages m ON (t.message_id = m.id) " +
"LEFT JOIN folders f ON (m.folder_id = f.id) " + "LEFT JOIN folders f ON (m.folder_id = f.id) " +
"WHERE (m.empty IS NULL OR m.empty != 1) AND m.deleted = 0 " + "WHERE (m.empty IS NULL OR m.empty != 1) AND m.deleted = 0 " +
"AND (t.id" + selectionSet + " OR t.root" + selectionSet + ")"; "AND t.root" + selectionSet;
int len = selectionArgs.length; getDataFromCursor(db.rawQuery(sql, selectionArgs));
String[] args = new String[len * 2];
System.arraycopy(selectionArgs, 0, args, 0, len);
System.arraycopy(selectionArgs, 0, args, len, len);
getDataFromCursor(db.rawQuery(sql, args));
} else { } else {
String sql = String sql =

126
src/com/fsck/k9/provider/EmailProvider.java
View File

@ -63,33 +63,6 @@ public class EmailProvider extends ContentProvider {
private static final String MESSAGES_TABLE = "messages"; private static final String MESSAGES_TABLE = "messages";
private static final String[] MESSAGES_COLUMNS = {
MessageColumns.ID,
MessageColumns.UID,
MessageColumns.INTERNAL_DATE,
MessageColumns.SUBJECT,
MessageColumns.DATE,
MessageColumns.MESSAGE_ID,
MessageColumns.SENDER_LIST,
MessageColumns.TO_LIST,
MessageColumns.CC_LIST,
MessageColumns.BCC_LIST,
MessageColumns.REPLY_TO_LIST,
MessageColumns.FLAGS,
MessageColumns.ATTACHMENT_COUNT,
MessageColumns.FOLDER_ID,
MessageColumns.PREVIEW,
MessageColumns.READ,
MessageColumns.FLAGGED,
MessageColumns.ANSWERED,
MessageColumns.FORWARDED,
InternalMessageColumns.DELETED,
InternalMessageColumns.EMPTY,
InternalMessageColumns.TEXT_CONTENT,
InternalMessageColumns.HTML_CONTENT,
InternalMessageColumns.MIME_TYPE
};
private static final Map<String, String> THREAD_AGGREGATION_FUNCS = new HashMap<String, String>(); private static final Map<String, String> THREAD_AGGREGATION_FUNCS = new HashMap<String, String>();
static { static {
THREAD_AGGREGATION_FUNCS.put(MessageColumns.DATE, "MAX"); THREAD_AGGREGATION_FUNCS.put(MessageColumns.DATE, "MAX");
@ -403,11 +376,12 @@ public class EmailProvider extends ContentProvider {
final String aggregationFunc = THREAD_AGGREGATION_FUNCS.get(columnName); final String aggregationFunc = THREAD_AGGREGATION_FUNCS.get(columnName);
if (MessageColumns.ID.equals(columnName)) { if (MessageColumns.ID.equals(columnName)) {
query.append("u." + MessageColumns.ID + " AS " + MessageColumns.ID); query.append("m." + MessageColumns.ID + " AS " + MessageColumns.ID);
} else if (aggregationFunc != null) { } else if (aggregationFunc != null) {
query.append(aggregationFunc + "(" + columnName + ") AS " + columnName); query.append("a.");
} else if (SpecialColumns.THREAD_COUNT.equals(columnName)) { query.append(columnName);
query.append("COUNT(g) AS " + SpecialColumns.THREAD_COUNT); query.append(" AS ");
query.append(columnName);
} else { } else {
query.append(columnName); query.append(columnName);
} }
@ -415,23 +389,29 @@ public class EmailProvider extends ContentProvider {
query.append(" FROM ("); query.append(" FROM (");
createThreadedSubQuery(projection, selection, selectionArgs, "t1.id = t2.id", query); createThreadedSubQuery(projection, selection, selectionArgs, query);
query.append(" UNION ALL ");
createThreadedSubQuery(projection, selection, selectionArgs, "t1.id = t2.root", query);
query.append(") u GROUP BY g"); query.append(") a ");
query.append("LEFT JOIN " + THREADS_TABLE + " t " +
"ON (t." + ThreadColumns.ROOT + " = a.thread_root) " +
"LEFT JOIN " + MESSAGES_TABLE + " m " +
"ON (m." + MessageColumns.ID + " = t." + ThreadColumns.MESSAGE_ID +
") ");
if (Utility.arrayContainsAny(projection, (Object[]) FOLDERS_COLUMNS)) {
query.append("LEFT JOIN " + FOLDERS_TABLE + " f " +
"ON (m." + MessageColumns.FOLDER_ID + " = f." + FolderColumns.ID +
") ");
}
query.append("WHERE m." + MessageColumns.DATE + " = a." + MessageColumns.DATE);
if (!StringUtils.isNullOrEmpty(sortOrder)) { if (!StringUtils.isNullOrEmpty(sortOrder)) {
query.append(" ORDER BY "); query.append(" ORDER BY ");
query.append(sortOrder); query.append(sortOrder);
} }
// We need the selection arguments twice. Once for each sub query. return db.rawQuery(query.toString(), selectionArgs);
String[] args = new String[selectionArgs.length * 2];
System.arraycopy(selectionArgs, 0, args, 0, selectionArgs.length);
System.arraycopy(selectionArgs, 0, args, selectionArgs.length, selectionArgs.length);
return db.rawQuery(query.toString(), args);
} }
}); });
} catch (UnavailableStorageException e) { } catch (UnavailableStorageException e) {
@ -440,53 +420,51 @@ public class EmailProvider extends ContentProvider {
} }
private void createThreadedSubQuery(String[] projection, String selection, private void createThreadedSubQuery(String[] projection, String selection,
String[] selectionArgs, String join, StringBuilder query) { String[] selectionArgs, StringBuilder query) {
query.append("SELECT h." + MessageColumns.ID + " AS g"); query.append("SELECT t." + ThreadColumns.ROOT + " AS thread_root");
for (String columnName : projection) { for (String columnName : projection) {
String aggregationFunc = THREAD_AGGREGATION_FUNCS.get(columnName);
if (SpecialColumns.THREAD_COUNT.equals(columnName)) { if (SpecialColumns.THREAD_COUNT.equals(columnName)) {
// Skip query.append(",COUNT(t." + ThreadColumns.ROOT + ") AS " +
} else if (SpecialColumns.FOLDER_NAME.equals(columnName) || SpecialColumns.THREAD_COUNT);
SpecialColumns.INTEGRATE.equals(columnName)) { } else if (aggregationFunc != null) {
query.append("," + columnName); query.append(",");
} else if (ThreadColumns.ROOT.equals(columnName)) { query.append(aggregationFunc);
// Always return the thread ID of the root message (even for the root query.append("(");
// message itself) query.append(columnName);
query.append(",CASE WHEN t2." + ThreadColumns.ROOT + " IS NULL THEN " + query.append(") AS ");
"t2." + ThreadColumns.ID + " ELSE t2." + ThreadColumns.ROOT + query.append(columnName);
" END AS " + ThreadColumns.ROOT);
} else { } else {
query.append(",m."); // Skip
query.append(columnName);
query.append(" AS ");
query.append(columnName);
} }
} }
query.append( query.append(
" FROM messages h " + " FROM " + MESSAGES_TABLE + " m " +
"LEFT JOIN threads t1 ON (t1.message_id = h.id) " + "LEFT JOIN " + THREADS_TABLE + " t " +
"JOIN threads t2 ON ("); "ON (t." + ThreadColumns.MESSAGE_ID + " = m." + MessageColumns.ID + ")");
query.append(join);
query.append(") " +
"LEFT JOIN messages m ON (m.id = t2.message_id) ");
if (Utility.arrayContainsAny(projection, (Object[]) FOLDERS_COLUMNS)) { if (Utility.arrayContainsAny(projection, (Object[]) FOLDERS_COLUMNS)) {
query.append("LEFT JOIN folders f ON (m.folder_id = f.id) "); query.append("LEFT JOIN " + FOLDERS_TABLE + " f " +
"ON (m." + MessageColumns.FOLDER_ID + " = f." + FolderColumns.ID +
")");
} }
query.append( query.append(" WHERE " +
"WHERE " + "(" + InternalMessageColumns.DELETED + " = 0 AND " +
"(t1.root IS NULL AND " + "(" + InternalMessageColumns.EMPTY + " IS NULL OR " +
"m.deleted = 0 AND " + InternalMessageColumns.EMPTY + " != 1))");
"(m.empty IS NULL OR m.empty != 1))");
if (!StringUtils.isNullOrEmpty(selection)) { if (!StringUtils.isNullOrEmpty(selection)) {
query.append(" AND ("); query.append(" AND (");
query.append(SqlQueryBuilder.addPrefixToSelection(MESSAGES_COLUMNS, query.append(selection);
"h.", selection));
query.append(")"); query.append(")");
} }
query.append(" GROUP BY t." + ThreadColumns.ROOT);
} }
protected Cursor getThread(String accountUuid, final String[] projection, final String threadId, protected Cursor getThread(String accountUuid, final String[] projection, final String threadId,
@ -528,8 +506,8 @@ public class EmailProvider extends ContentProvider {
") "); ") ");
} }
query.append("WHERE (t." + ThreadColumns.ID + " = ? OR " + query.append("WHERE " +
ThreadColumns.ROOT + " = ?) AND " + ThreadColumns.ROOT + " = ? AND " +
InternalMessageColumns.DELETED + " = 0 AND (" + InternalMessageColumns.DELETED + " = 0 AND (" +
InternalMessageColumns.EMPTY + " IS NULL OR " + InternalMessageColumns.EMPTY + " IS NULL OR " +
InternalMessageColumns.EMPTY + " != 1)"); InternalMessageColumns.EMPTY + " != 1)");
@ -538,7 +516,7 @@ public class EmailProvider extends ContentProvider {
query.append(SqlQueryBuilder.addPrefixToSelection(FIXUP_MESSAGES_COLUMNS, query.append(SqlQueryBuilder.addPrefixToSelection(FIXUP_MESSAGES_COLUMNS,
"m.", sortOrder)); "m.", sortOrder));
return db.rawQuery(query.toString(), new String[] { threadId, threadId }); return db.rawQuery(query.toString(), new String[] { threadId });
} }
}); });
} catch (UnavailableStorageException e) { } catch (UnavailableStorageException e) {

11
src/com/fsck/k9/search/SqlQueryBuilder.java
View File

@ -66,12 +66,6 @@ public class SqlQueryBuilder {
} }
break; break;
} }
case THREAD_ID: {
query.append("threads.id = ? OR threads.root = ?");
selectionArgs.add(condition.value);
selectionArgs.add(condition.value);
break;
}
default: { default: {
appendCondition(condition, query, selectionArgs); appendCondition(condition, query, selectionArgs);
} }
@ -179,7 +173,10 @@ public class SqlQueryBuilder {
columnName = "display_class"; columnName = "display_class";
break; break;
} }
case THREAD_ID: case THREAD_ID: {
columnName = "threads.root";
break;
}
case FOLDER: case FOLDER:
case SEARCHABLE: { case SEARCHABLE: {
// Special cases handled in buildWhereClauseInternal() // Special cases handled in buildWhereClauseInternal()