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Bug 1024289: Part 1: remove redundant subquery from combined view and add upgrade path. r=rnewman
This commit is contained in:
Chris Kitching
parent
c7d32d44f1
commit
bed91760d4
@ -34,7 +34,7 @@ import android.util.Log;
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final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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private static final String LOGTAG = "GeckoBrowserDBHelper";
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public static final int DATABASE_VERSION = 18;
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public static final int DATABASE_VERSION = 19;
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public static final String DATABASE_NAME = "browser.db";
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final protected Context mContext;
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@ -653,73 +653,108 @@ final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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" ON " + Combined.FAVICON_ID + " = " + qualifyColumn(TABLE_FAVICONS, Favicons._ID));
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}
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private void createCombinedViewOn16(SQLiteDatabase db) {
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debug("Creating " + VIEW_COMBINED + " view");
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private void createCombinedViewOn19(SQLiteDatabase db) {
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/*
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The v19 combined view removes the redundant subquery from the v16
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combined view and reorders the columns as necessary to prevent this
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from breaking any code that might be referencing columns by index.
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The rows in the ensuing view are, in order:
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Combined.BOOKMARK_ID
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Combined.HISTORY_ID
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Combined._ID (always 0)
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Combined.URL
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Combined.TITLE
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Combined.VISITS
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Combined.DISPLAY
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Combined.DATE_LAST_VISITED
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Combined.FAVICON_ID
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We need to return an _id column because CursorAdapter requires it for its
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default implementation for the getItemId() method. However, since
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we're not using this feature in the parts of the UI using this view,
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we can just use 0 for all rows.
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*/
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db.execSQL("CREATE VIEW IF NOT EXISTS " + VIEW_COMBINED + " AS" +
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" SELECT " + Combined.BOOKMARK_ID + ", " +
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Combined.HISTORY_ID + ", " +
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// We need to return an _id column because CursorAdapter requires it for its
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// default implementation for the getItemId() method. However, since
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// we're not using this feature in the parts of the UI using this view,
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// we can just use 0 for all rows.
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"0 AS " + Combined._ID + ", " +
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Combined.URL + ", " +
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Combined.TITLE + ", " +
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Combined.VISITS + ", " +
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Combined.DISPLAY + ", " +
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Combined.DATE_LAST_VISITED + ", " +
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Combined.FAVICON_ID +
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" FROM (" +
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// Bookmarks without history.
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" SELECT " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks._ID) + " AS " + Combined.BOOKMARK_ID + ", " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.URL) + " AS " + Combined.URL + ", " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TITLE) + " AS " + Combined.TITLE + ", " +
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) + " WHEN " +
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Bookmarks.FIXED_READING_LIST_ID + " THEN " + Combined.DISPLAY_READER + " ELSE " +
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Combined.DISPLAY_NORMAL + " END AS " + Combined.DISPLAY + ", " +
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"-1 AS " + Combined.HISTORY_ID + ", " +
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"-1 AS " + Combined.VISITS + ", " +
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"-1 AS " + Combined.DATE_LAST_VISITED + ", " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.FAVICON_ID) + " AS " + Combined.FAVICON_ID +
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" FROM " + TABLE_BOOKMARKS +
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" WHERE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TYPE) + " = " + Bookmarks.TYPE_BOOKMARK + " AND " +
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// Ignore pinned bookmarks.
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) + " <> " + Bookmarks.FIXED_PINNED_LIST_ID + " AND " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.IS_DELETED) + " = 0 AND " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.URL) +
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" NOT IN (SELECT " + History.URL + " FROM " + TABLE_HISTORY + ")" +
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" UNION ALL" +
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// Bookmarks without history.
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" SELECT " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks._ID) + " AS " + Combined.BOOKMARK_ID + "," +
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"-1 AS " + Combined.HISTORY_ID + "," +
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"0 AS " + Combined._ID + "," +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.URL) + " AS " + Combined.URL + ", " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TITLE) + " AS " + Combined.TITLE + ", " +
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"-1 AS " + Combined.VISITS + ", " +
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) +
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" WHEN " + Bookmarks.FIXED_READING_LIST_ID + " THEN " +
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Combined.DISPLAY_READER +
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" ELSE " +
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Combined.DISPLAY_NORMAL +
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" END AS " + Combined.DISPLAY + "," +
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"-1 AS " + Combined.DATE_LAST_VISITED + "," +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.FAVICON_ID) + " AS " + Combined.FAVICON_ID +
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" FROM " + TABLE_BOOKMARKS +
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" WHERE " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TYPE) + " = " + Bookmarks.TYPE_BOOKMARK + " AND " +
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// Ignore pinned bookmarks.
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) + " <> " + Bookmarks.FIXED_PINNED_LIST_ID + " AND " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.IS_DELETED) + " = 0 AND " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.URL) +
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" NOT IN (SELECT " + History.URL + " FROM " + TABLE_HISTORY + ")" +
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" UNION ALL" +
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// History with and without bookmark.
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" SELECT " + "CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.IS_DELETED) + " WHEN 0 THEN " +
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// Give pinned bookmarks a NULL ID so that they're not treated as bookmarks. We can't
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// completely ignore them here because they're joined with history entries we care about.
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) + " WHEN " +
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Bookmarks.FIXED_PINNED_LIST_ID + " THEN NULL ELSE " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks._ID) + " END " +
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"ELSE NULL END AS " + Combined.BOOKMARK_ID + ", " +
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qualifyColumn(TABLE_HISTORY, History.URL) + " AS " + Combined.URL + ", " +
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// Prioritize bookmark titles over history titles, since the user may have
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// customized the title for a bookmark.
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"COALESCE(" + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TITLE) + ", " +
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qualifyColumn(TABLE_HISTORY, History.TITLE) +")" + " AS " + Combined.TITLE + ", " +
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// Only use DISPLAY_READER if the matching bookmark entry inside reading
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// list folder is not marked as deleted.
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.IS_DELETED) + " WHEN 0 THEN CASE " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) + " WHEN " + Bookmarks.FIXED_READING_LIST_ID +
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" THEN " + Combined.DISPLAY_READER + " ELSE " + Combined.DISPLAY_NORMAL + " END ELSE " +
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Combined.DISPLAY_NORMAL + " END AS " + Combined.DISPLAY + ", " +
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qualifyColumn(TABLE_HISTORY, History._ID) + " AS " + Combined.HISTORY_ID + ", " +
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qualifyColumn(TABLE_HISTORY, History.VISITS) + " AS " + Combined.VISITS + ", " +
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qualifyColumn(TABLE_HISTORY, History.DATE_LAST_VISITED) + " AS " + Combined.DATE_LAST_VISITED + ", " +
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qualifyColumn(TABLE_HISTORY, History.FAVICON_ID) + " AS " + Combined.FAVICON_ID +
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" SELECT " +
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.IS_DELETED) +
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// Give pinned bookmarks a NULL ID so that they're not treated as bookmarks. We can't
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// completely ignore them here because they're joined with history entries we care about.
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" WHEN 0 THEN " +
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) +
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" WHEN " + Bookmarks.FIXED_PINNED_LIST_ID + " THEN " +
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"NULL " +
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"ELSE " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks._ID) +
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" END " +
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"ELSE " +
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"NULL " +
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"END AS " + Combined.BOOKMARK_ID + "," +
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qualifyColumn(TABLE_HISTORY, History._ID) + " AS " + Combined.HISTORY_ID + "," +
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"0 AS " + Combined._ID + "," +
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qualifyColumn(TABLE_HISTORY, History.URL) + " AS " + Combined.URL + "," +
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// Prioritize bookmark titles over history titles, since the user may have
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// customized the title for a bookmark.
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"COALESCE(" + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TITLE) + ", " +
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qualifyColumn(TABLE_HISTORY, History.TITLE) +
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") AS " + Combined.TITLE + "," +
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qualifyColumn(TABLE_HISTORY, History.VISITS) + " AS " + Combined.VISITS + "," +
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// Only use DISPLAY_READER if the matching bookmark entry inside reading
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// list folder is not marked as deleted.
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.IS_DELETED) + " " +
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"WHEN 0 THEN " +
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"CASE " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.PARENT) + " " +
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"WHEN " + Bookmarks.FIXED_READING_LIST_ID + " THEN " +
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Combined.DISPLAY_READER + " " +
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"ELSE " + Combined.DISPLAY_NORMAL + " " +
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"END " +
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"ELSE " +
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Combined.DISPLAY_NORMAL + " " +
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"END AS " + Combined.DISPLAY + "," +
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qualifyColumn(TABLE_HISTORY, History.DATE_LAST_VISITED) + " AS " + Combined.DATE_LAST_VISITED + "," +
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qualifyColumn(TABLE_HISTORY, History.FAVICON_ID) + " AS " + Combined.FAVICON_ID +
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" FROM " + TABLE_HISTORY + " LEFT OUTER JOIN " + TABLE_BOOKMARKS +
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" ON " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.URL) + " = " + qualifyColumn(TABLE_HISTORY, History.URL) +
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" WHERE " + qualifyColumn(TABLE_HISTORY, History.URL) + " IS NOT NULL AND " +
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qualifyColumn(TABLE_HISTORY, History.IS_DELETED) + " = 0 AND (" +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TYPE) + " IS NULL OR " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TYPE) + " = " + Bookmarks.TYPE_BOOKMARK + ") " +
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")");
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" ON " + qualifyColumn(TABLE_BOOKMARKS, Bookmarks.URL) + " = " + qualifyColumn(TABLE_HISTORY, History.URL) +
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" WHERE " +
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qualifyColumn(TABLE_HISTORY, History.URL) + " IS NOT NULL AND " +
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qualifyColumn(TABLE_HISTORY, History.IS_DELETED) + " = 0 AND " +
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"(" +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TYPE) + " IS NULL OR " +
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qualifyColumn(TABLE_BOOKMARKS, Bookmarks.TYPE) + " = " + Bookmarks.TYPE_BOOKMARK +
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")"
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);
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debug("Creating " + VIEW_COMBINED_WITH_FAVICONS + " view");
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@ -742,7 +777,7 @@ final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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createBookmarksWithFaviconsView(db);
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createHistoryWithFaviconsView(db);
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createCombinedViewOn16(db);
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createCombinedViewOn19(db);
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createOrUpdateSpecialFolder(db, Bookmarks.PLACES_FOLDER_GUID,
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R.string.bookmarks_folder_places, 0);
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@ -1298,10 +1333,10 @@ final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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}
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private void upgradeDatabaseFrom15to16(SQLiteDatabase db) {
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db.execSQL("DROP VIEW IF EXISTS " + VIEW_COMBINED);
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db.execSQL("DROP VIEW IF EXISTS " + VIEW_COMBINED_WITH_FAVICONS);
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createCombinedViewOn16(db);
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// No harm in creating the v19 combined view here: means we don't need two almost-identical
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// functions to define both the v16 and v19 ones. The upgrade path will redundantly drop
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// and recreate the view again. *shrug*
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createV19CombinedView(db);
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}
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private void upgradeDatabaseFrom16to17(SQLiteDatabase db) {
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@ -1378,6 +1413,18 @@ final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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}
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}
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private void upgradeDatabaseFrom18to19(SQLiteDatabase db) {
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// Redefine the "combined" view...
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createV19CombinedView(db);
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}
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private void createV19CombinedView(SQLiteDatabase db) {
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db.execSQL("DROP VIEW IF EXISTS " + VIEW_COMBINED);
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db.execSQL("DROP VIEW IF EXISTS " + VIEW_COMBINED_WITH_FAVICONS);
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createCombinedViewOn19(db);
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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debug("Upgrading browser.db: " + db.getPath() + " from " +
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@ -1454,6 +1501,10 @@ final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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case 18:
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upgradeDatabaseFrom17to18(db);
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break;
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case 19:
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upgradeDatabaseFrom18to19(db);
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break;
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}
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}
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@ -1566,4 +1617,4 @@ final class BrowserDatabaseHelper extends SQLiteOpenHelper {
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bookmark.remove("folder");
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}
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}
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}
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}
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