Test_const_string_jumbo.rar_operation

package android.provider; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.content.SearchRecentSuggestionsProvider; import android.database.Cursor; import android.net.Uri; import android.text.TextUtils; import android.util.Log; /** * This is a utility class providing access to * {@link android.content.SearchRecentSuggestionsProvider}. * * <p>Unlike some utility classes, this one must be instantiated and properly initialized, so that * it can be configured to operate with the search suggestions provider that you have created. * * <p>Typically, you will do this in your searchable activity, each time you receive an incoming * {@link android.content.Intent#ACTION_SEARCH ACTION_SEARCH} Intent. The code to record each * incoming query is as follows: * <pre class="prettyprint"> * SearchSuggestions suggestions = new SearchSuggestions(this, * MySuggestionsProvider.AUTHORITY, MySuggestionsProvider.MODE); * suggestions.saveRecentQuery(queryString, null); * </pre> * * <p>For a working example, see SearchSuggestionSampleProvider and SearchQueryResults in * samples/ApiDemos/app. */ public class SearchRecentSuggestions { // debugging support private static final String LOG_TAG = "SearchSuggestions"; // DELETE ME (eventually) private static final int DBG_SUGGESTION_TIMESTAMPS = 0; // This is a superset of all possible column names (need not all be in table) private static class SuggestionColumns implements BaseColumns { public static final String DISPLAY1 = "display1"; public static final String DISPLAY2 = "display2"; public static final String QUERY = "query"; public static final String DATE = "date"; } /* if you change column order you must also change indices below */ /** * This is the database projection that can be used to view saved queries, when * configured for one-line operation. */ public static final String[] QUERIES_PROJECTION_1LINE = new String[] { SuggestionColumns._ID, SuggestionColumns.DATE, SuggestionColumns.QUERY, SuggestionColumns.DISPLAY1, }; /* if you change column order you must also change indices below */ /** * This is the database projection that can be used to view saved queries, when * configured for two-line operation. */ public static final String[] QUERIES_PROJECTION_2LINE = new String[] { SuggestionColumns._ID, SuggestionColumns.DATE, SuggestionColumns.QUERY, SuggestionColumns.DISPLAY1, SuggestionColumns.DISPLAY2, }; /* these indices depend on QUERIES_PROJECTION_xxx */ /** Index into the provided query projections. For use with Cursor.update methods. */ public static final int QUERIES_PROJECTION_DATE_INDEX = 1; /** Index into the provided query projections. For use with Cursor.update methods. */ public static final int QUERIES_PROJECTION_QUERY_INDEX = 2; /** Index into the provided query projections. For use with Cursor.update methods. */ public static final int QUERIES_PROJECTION_DISPLAY1_INDEX = 3; /** Index into the provided query projections. For use with Cursor.update methods. */ public static final int QUERIES_PROJECTION_DISPLAY2_INDEX = 4; // only when 2line active /* columns needed to determine whether to truncate history */ private static final String[] TRUNCATE_HISTORY_PROJECTION = new String[] { SuggestionColumns._ID, SuggestionColumns.DATE }; /* * Set a cap on the count of items in the suggestions table, to * prevent db and layout operations from dragging to a crawl. Revisit this * cap when/if db/layout performance improvements are made. */ private static final int MAX_HISTORY_COUNT = 250; // client-provided configuration values private Context mContext; private String mAuthority; private boolean mTwoLineDisplay; private Uri mSuggestionsUri; private String[] mQueriesProjection; /** * Although provider utility classes are typically static, this one must be constructed * because it needs to be initialized using the same values that you provided in your * {@link android.content.SearchRecentSuggestionsProvider}. * * @param authority This must match the authority that you've declared in your manifest. * @param mode You can use mode flags here to determine certain functional aspects of your * database. Note, this value should not change from run to run, because when it does change, * your suggestions database may be wiped. * * @see android.content.SearchRecentSuggestionsProvider * @see android.content.SearchRecentSuggestionsProvider#setupSuggestions */ public SearchRecentSuggestions(Context context, String authority, int mode) { if (TextUtils.isEmpty(authority) || ((mode & SearchRecentSuggestionsProvider.DATABASE_MODE_QUERIES) == 0)) { throw new IllegalArgumentException(); } // unpack mode flags mTwoLineDisplay = (0 != (mode & SearchRecentSuggestionsProvider.DATABASE_MODE_2LINES)); // saved values mContext = context; mAuthority = new String(authority); // derived values mSuggestionsUri = Uri.parse("content://" + mAuthority + "/suggestions"); if (mTwoLineDisplay) { mQueriesProjection = QUERIES_PROJECTION_2LINE; } else { mQueriesProjection = QUERIES_PROJECTION_1LINE; } } /** * Add a query to the recent queries list. * * @param queryString The string as typed by the user. This string will be displayed as * the suggestion, and if the user clicks on the suggestion, this string will be sent to your * searchable activity (as a new search query). * @param line2 If you have configured your recent suggestions provider with * {@link android.content.SearchRecentSuggestionsProvider#DATABASE_MODE_2LINES}, you can * pass a second line of text here. It will be shown in a smaller font, below the primary * suggestion. When typing, matches in either line of text will be displayed in the list. * If you did not configure two-line mode, or if a given suggestion does not have any * additional text to display, you can pass null here. */ public void saveRecentQuery(String queryString, String line2) { if (TextUtils.isEmpty(queryString)) { return; } if (!mTwoLineDisplay && !TextUtils.isEmpty(line2)) { throw new IllegalArgumentException(); } ContentResolver cr = mContext.getContentResolver(); long now = System.currentTimeMillis(); // Use content resolver (not cursor) to insert/update this query try { ContentValues values = new ContentValues(); values.put(SuggestionColumns.DISPLAY1, queryString); if (mTwoLineDisplay) { values.put(SuggestionColumns.DISPLAY2, line2); } values.put(SuggestionColumns.QUERY, queryString); values.put(SuggestionColumns.DATE, now); cr.insert(mSuggestionsUri, values); } catch (RuntimeException e) { Log.e(LOG_TAG, "saveRecentQuery", e); } // Shorten the list (if it has become too long) truncateHistory(cr, MAX_HISTORY_COUNT); } /** * Completely delete the history. Use this call to implement a "clear history" UI. * * Any application that implements search suggestions based on previous actions (such as * recent queries, page/items viewed, etc.) should provide a way for the user to clear the * history. This gives the user a measure of privacy, if they do not wish fo