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

Example 31 with MergeCursor

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

the class ModelTest method testModelIdIsUnique.

// Tests multiple authorities with clashing document IDs.
public void testModelIdIsUnique() {
    MatrixCursor cIn1 = new MatrixCursor(COLUMNS);
    MatrixCursor cIn2 = new MatrixCursor(COLUMNS);
    // Make two sets of items with the same IDs, under different authorities.
    final String AUTHORITY0 = "auth0";
    final String AUTHORITY1 = "auth1";
    for (int i = 0; i < ITEM_COUNT; ++i) {
        MatrixCursor.RowBuilder row0 = cIn1.newRow();
        row0.add(RootCursorWrapper.COLUMN_AUTHORITY, AUTHORITY0);
        row0.add(Document.COLUMN_DOCUMENT_ID, Integer.toString(i));
        MatrixCursor.RowBuilder row1 = cIn2.newRow();
        row1.add(RootCursorWrapper.COLUMN_AUTHORITY, AUTHORITY1);
        row1.add(Document.COLUMN_DOCUMENT_ID, Integer.toString(i));
    }
    Cursor cIn = new MergeCursor(new Cursor[] { cIn1, cIn2 });
    // Update the model, then make sure it contains all the expected items.
    DirectoryResult r = new DirectoryResult();
    r.cursor = cIn;
    model.update(r);
    assertEquals(ITEM_COUNT * 2, model.getItemCount());
    BitSet b0 = new BitSet(ITEM_COUNT);
    BitSet b1 = new BitSet(ITEM_COUNT);
    for (String id : model.getModelIds()) {
        Cursor cOut = model.getItem(id);
        String authority = DocumentInfo.getCursorString(cOut, RootCursorWrapper.COLUMN_AUTHORITY);
        String docId = DocumentInfo.getCursorString(cOut, Document.COLUMN_DOCUMENT_ID);
        switch(authority) {
            case AUTHORITY0:
                b0.set(Integer.parseInt(docId));
                break;
            case AUTHORITY1:
                b1.set(Integer.parseInt(docId));
                break;
            default:
                fail("Unrecognized authority string");
        }
    }
    assertEquals(ITEM_COUNT, b0.cardinality());
    assertEquals(ITEM_COUNT, b1.cardinality());
}