ListSuggestionCursorNoDuplicates.java revision 3e44ff1f2a204db3f479698cf0b3eab3d451dec2 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.quicksearchbox;
18
19import android.util.Log;
20
21import java.util.HashSet;
22
23/**
24 * A SuggestionCursor that is backed by a list of SuggestionPosition objects
25 * and doesn't allow duplicate suggestions.
26 *
27 */
28public class ListSuggestionCursorNoDuplicates extends ListSuggestionCursor {
29
30    private static final boolean DBG = true;
31    private static final String TAG = "QSB.ListSuggestionCursorNoDuplicates";
32
33    private HashSet<String> mSuggestionKeys;
34
35    public ListSuggestionCursorNoDuplicates(String userQuery) {
36        super(userQuery);
37        mSuggestionKeys = new HashSet<String>();
38    }
39
40    @Override
41    public boolean add(SuggestionPosition suggestionPos) {
42        SuggestionCursor suggestion = suggestionPos.getSuggestion();
43        String key = suggestion.getSuggestionKey();
44        if (mSuggestionKeys.add(key)) {
45            return super.add(suggestionPos);
46        } else {
47            if (DBG) Log.d(TAG, "Rejecting duplicate " + key);
48            return false;
49        }
50    }
51
52}
53