Examples with MergeCursor android.database.MergeCursor used on opensource projects

Example 26 with MergeCursor

use of android.database.MergeCursor in project android_frameworks_base by DirtyUnicorns.

the class Model method updateModelData.

/**
     * Scan over the incoming cursor data, generate Model IDs for each row, and sort the IDs
     * according to the current sort order.
     */
private void updateModelData() {
    int[] positions = new int[mCursorCount];
    mIds = new String[mCursorCount];
    boolean[] isDirs = new boolean[mCursorCount];
    String[] displayNames = null;
    long[] longValues = null;
    switch(mSortOrder) {
        case SORT_ORDER_DISPLAY_NAME:
            displayNames = new String[mCursorCount];
            break;
        case SORT_ORDER_LAST_MODIFIED:
        case SORT_ORDER_SIZE:
            longValues = new long[mCursorCount];
            break;
    }
    String mimeType;
    mCursor.moveToPosition(-1);
    for (int pos = 0; pos < mCursorCount; ++pos) {
        if (!mCursor.moveToNext()) {
            Log.e(TAG, "Fail to move cursor to next pos: " + pos);
            return;
        }
        positions[pos] = pos;
        // with the authority to avoid collisions.
        if (mCursor instanceof MergeCursor) {
            mIds[pos] = getCursorString(mCursor, RootCursorWrapper.COLUMN_AUTHORITY) + "|" + getCursorString(mCursor, Document.COLUMN_DOCUMENT_ID);
        } else {
            mIds[pos] = getCursorString(mCursor, Document.COLUMN_DOCUMENT_ID);
        }
        mimeType = getCursorString(mCursor, Document.COLUMN_MIME_TYPE);
        isDirs[pos] = Document.MIME_TYPE_DIR.equals(mimeType);
        switch(mSortOrder) {
            case SORT_ORDER_DISPLAY_NAME:
                final String displayName = getCursorString(mCursor, Document.COLUMN_DISPLAY_NAME);
                displayNames[pos] = displayName;
                break;
            case SORT_ORDER_LAST_MODIFIED:
                longValues[pos] = getLastModified(mCursor);
                break;
            case SORT_ORDER_SIZE:
                longValues[pos] = getCursorLong(mCursor, Document.COLUMN_SIZE);
                break;
        }
    }
    switch(mSortOrder) {
        case SORT_ORDER_DISPLAY_NAME:
            binarySort(displayNames, isDirs, positions, mIds);
            break;
        case SORT_ORDER_LAST_MODIFIED:
        case SORT_ORDER_SIZE:
            binarySort(longValues, isDirs, positions, mIds);
            break;
    }
    // Populate the positions.
    mPositions.clear();
    for (int i = 0; i < mCursorCount; ++i) {
        mPositions.put(mIds[i], positions[i]);
    }
}

Example 27 with MergeCursor

use of android.database.MergeCursor in project android_frameworks_base by ResurrectionRemix.

the class Model method updateModelData.

/**
     * Scan over the incoming cursor data, generate Model IDs for each row, and sort the IDs
     * according to the current sort order.
     */
private void updateModelData() {
    int[] positions = new int[mCursorCount];
    mIds = new String[mCursorCount];
    boolean[] isDirs = new boolean[mCursorCount];
    String[] displayNames = null;
    long[] longValues = null;
    switch(mSortOrder) {
        case SORT_ORDER_DISPLAY_NAME:
            displayNames = new String[mCursorCount];
            break;
        case SORT_ORDER_LAST_MODIFIED:
        case SORT_ORDER_SIZE:
            longValues = new long[mCursorCount];
            break;
    }
    String mimeType;
    mCursor.moveToPosition(-1);
    for (int pos = 0; pos < mCursorCount; ++pos) {
        if (!mCursor.moveToNext()) {
            Log.e(TAG, "Fail to move cursor to next pos: " + pos);
            return;
        }
        positions[pos] = pos;
        // with the authority to avoid collisions.
        if (mCursor instanceof MergeCursor) {
            mIds[pos] = getCursorString(mCursor, RootCursorWrapper.COLUMN_AUTHORITY) + "|" + getCursorString(mCursor, Document.COLUMN_DOCUMENT_ID);
        } else {
            mIds[pos] = getCursorString(mCursor, Document.COLUMN_DOCUMENT_ID);
        }
        mimeType = getCursorString(mCursor, Document.COLUMN_MIME_TYPE);
        isDirs[pos] = Document.MIME_TYPE_DIR.equals(mimeType);
        switch(mSortOrder) {
            case SORT_ORDER_DISPLAY_NAME:
                final String displayName = getCursorString(mCursor, Document.COLUMN_DISPLAY_NAME);
                displayNames[pos] = displayName;
                break;
            case SORT_ORDER_LAST_MODIFIED:
                longValues[pos] = getLastModified(mCursor);
                break;
            case SORT_ORDER_SIZE:
                longValues[pos] = getCursorLong(mCursor, Document.COLUMN_SIZE);
                break;
        }
    }
    switch(mSortOrder) {
        case SORT_ORDER_DISPLAY_NAME:
            binarySort(displayNames, isDirs, positions, mIds);
            break;
        case SORT_ORDER_LAST_MODIFIED:
        case SORT_ORDER_SIZE:
            binarySort(longValues, isDirs, positions, mIds);
            break;
    }
    // Populate the positions.
    mPositions.clear();
    for (int i = 0; i < mCursorCount; ++i) {
        mPositions.put(mIds[i], positions[i]);
    }
}

Example 28 with MergeCursor

use of android.database.MergeCursor in project android_frameworks_base by ResurrectionRemix.

the class RecentsLoader method loadInBackgroundLocked.

private DirectoryResult loadInBackgroundLocked() {
    if (mFirstPassLatch == null) {
        // First time through we kick off all the recent tasks, and wait
        // around to see if everyone finishes quickly.
        final Collection<RootInfo> roots = mRoots.getMatchingRootsBlocking(mState);
        for (RootInfo root : roots) {
            if (root.supportsRecents()) {
                mTasks.put(root, new RecentsTask(root.authority, root.rootId));
            }
        }
        mFirstPassLatch = new CountDownLatch(mTasks.size());
        for (RecentsTask task : mTasks.values()) {
            ProviderExecutor.forAuthority(task.authority).execute(task);
        }
        try {
            mFirstPassLatch.await(MAX_FIRST_PASS_WAIT_MILLIS, TimeUnit.MILLISECONDS);
            mFirstPassDone = true;
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }
    final long rejectBefore = System.currentTimeMillis() - REJECT_OLDER_THAN;
    // Collect all finished tasks
    boolean allDone = true;
    List<Cursor> cursors = new ArrayList<>();
    for (RecentsTask task : mTasks.values()) {
        if (task.isDone()) {
            try {
                final Cursor cursor = task.get();
                if (cursor == null)
                    continue;
                final FilteringCursorWrapper filtered = new FilteringCursorWrapper(cursor, mState.acceptMimes, RECENT_REJECT_MIMES, rejectBefore) {

                    @Override
                    public void close() {
                    // Ignored, since we manage cursor lifecycle internally
                    }
                };
                cursors.add(filtered);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            } catch (ExecutionException e) {
            // We already logged on other side
            } catch (Exception e) {
                Log.e(TAG, "Failed to query Recents for authority: " + task.authority + ". Skip this authority in Recents.", e);
            }
        } else {
            allDone = false;
        }
    }
    if (DEBUG) {
        Log.d(TAG, "Found " + cursors.size() + " of " + mTasks.size() + " recent queries done");
    }
    final DirectoryResult result = new DirectoryResult();
    result.sortOrder = SORT_ORDER_LAST_MODIFIED;
    final Cursor merged;
    if (cursors.size() > 0) {
        merged = new MergeCursor(cursors.toArray(new Cursor[cursors.size()]));
    } else {
        // Return something when nobody is ready
        merged = new MatrixCursor(new String[0]);
    }
    // Tell the UI if this is an in-progress result. When loading is complete, another update is
    // sent with EXTRA_LOADING set to false.
    Bundle extras = new Bundle();
    extras.putBoolean(DocumentsContract.EXTRA_LOADING, !allDone);
    merged.setExtras(extras);
    result.cursor = merged;
    return result;
}

Example 29 with MergeCursor

use of android.database.MergeCursor in project android_frameworks_base by crdroidandroid.

the class RecentsLoader method loadInBackgroundLocked.

private DirectoryResult loadInBackgroundLocked() {
    if (mFirstPassLatch == null) {
        // First time through we kick off all the recent tasks, and wait
        // around to see if everyone finishes quickly.
        final Collection<RootInfo> roots = mRoots.getMatchingRootsBlocking(mState);
        for (RootInfo root : roots) {
            if (root.supportsRecents()) {
                mTasks.put(root, new RecentsTask(root.authority, root.rootId));
            }
        }
        mFirstPassLatch = new CountDownLatch(mTasks.size());
        for (RecentsTask task : mTasks.values()) {
            ProviderExecutor.forAuthority(task.authority).execute(task);
        }
        try {
            mFirstPassLatch.await(MAX_FIRST_PASS_WAIT_MILLIS, TimeUnit.MILLISECONDS);
            mFirstPassDone = true;
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }
    final long rejectBefore = System.currentTimeMillis() - REJECT_OLDER_THAN;
    // Collect all finished tasks
    boolean allDone = true;
    List<Cursor> cursors = new ArrayList<>();
    for (RecentsTask task : mTasks.values()) {
        if (task.isDone()) {
            try {
                final Cursor cursor = task.get();
                if (cursor == null)
                    continue;
                final FilteringCursorWrapper filtered = new FilteringCursorWrapper(cursor, mState.acceptMimes, RECENT_REJECT_MIMES, rejectBefore) {

                    @Override
                    public void close() {
                    // Ignored, since we manage cursor lifecycle internally
                    }
                };
                cursors.add(filtered);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            } catch (ExecutionException e) {
            // We already logged on other side
            } catch (Exception e) {
                Log.e(TAG, "Failed to query Recents for authority: " + task.authority + ". Skip this authority in Recents.", e);
            }
        } else {
            allDone = false;
        }
    }
    if (DEBUG) {
        Log.d(TAG, "Found " + cursors.size() + " of " + mTasks.size() + " recent queries done");
    }
    final DirectoryResult result = new DirectoryResult();
    result.sortOrder = SORT_ORDER_LAST_MODIFIED;
    final Cursor merged;
    if (cursors.size() > 0) {
        merged = new MergeCursor(cursors.toArray(new Cursor[cursors.size()]));
    } else {
        // Return something when nobody is ready
        merged = new MatrixCursor(new String[0]);
    }
    // Tell the UI if this is an in-progress result. When loading is complete, another update is
    // sent with EXTRA_LOADING set to false.
    Bundle extras = new Bundle();
    extras.putBoolean(DocumentsContract.EXTRA_LOADING, !allDone);
    merged.setExtras(extras);
    result.cursor = merged;
    return result;
}

Example 30 with MergeCursor

use of android.database.MergeCursor in project android_frameworks_base by crdroidandroid.

the class Model method updateModelData.

/**
     * Scan over the incoming cursor data, generate Model IDs for each row, and sort the IDs
     * according to the current sort order.
     */
private void updateModelData() {
    int[] positions = new int[mCursorCount];
    mIds = new String[mCursorCount];
    boolean[] isDirs = new boolean[mCursorCount];
    String[] displayNames = null;
    long[] longValues = null;
    switch(mSortOrder) {
        case SORT_ORDER_DISPLAY_NAME:
            displayNames = new String[mCursorCount];
            break;
        case SORT_ORDER_LAST_MODIFIED:
        case SORT_ORDER_SIZE:
            longValues = new long[mCursorCount];
            break;
    }
    String mimeType;
    mCursor.moveToPosition(-1);
    for (int pos = 0; pos < mCursorCount; ++pos) {
        if (!mCursor.moveToNext()) {
            Log.e(TAG, "Fail to move cursor to next pos: " + pos);
            return;
        }
        positions[pos] = pos;
        // with the authority to avoid collisions.
        if (mCursor instanceof MergeCursor) {
            mIds[pos] = getCursorString(mCursor, RootCursorWrapper.COLUMN_AUTHORITY) + "|" + getCursorString(mCursor, Document.COLUMN_DOCUMENT_ID);
        } else {
            mIds[pos] = getCursorString(mCursor, Document.COLUMN_DOCUMENT_ID);
        }
        mimeType = getCursorString(mCursor, Document.COLUMN_MIME_TYPE);
        isDirs[pos] = Document.MIME_TYPE_DIR.equals(mimeType);
        switch(mSortOrder) {
            case SORT_ORDER_DISPLAY_NAME:
                final String displayName = getCursorString(mCursor, Document.COLUMN_DISPLAY_NAME);
                displayNames[pos] = displayName;
                break;
            case SORT_ORDER_LAST_MODIFIED:
                longValues[pos] = getLastModified(mCursor);
                break;
            case SORT_ORDER_SIZE:
                longValues[pos] = getCursorLong(mCursor, Document.COLUMN_SIZE);
                break;
        }
    }
    switch(mSortOrder) {
        case SORT_ORDER_DISPLAY_NAME:
            binarySort(displayNames, isDirs, positions, mIds);
            break;
        case SORT_ORDER_LAST_MODIFIED:
        case SORT_ORDER_SIZE:
            binarySort(longValues, isDirs, positions, mIds);
            break;
    }
    // Populate the positions.
    mPositions.clear();
    for (int i = 0; i < mCursorCount; ++i) {
        mPositions.put(mIds[i], positions[i]);
    }
}