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+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.cbaines.suma;
+
+import java.sql.SQLException;
+import java.util.List;
+
+import android.app.SearchManager;
+import android.content.ContentProvider;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.UriMatcher;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.net.Uri;
+import android.provider.BaseColumns;
+import android.util.Log;
+
+import com.j256.ormlite.android.AndroidCompiledStatement;
+import com.j256.ormlite.android.apptools.OpenHelperManager;
+import com.j256.ormlite.dao.Dao;
+import com.j256.ormlite.stmt.PreparedQuery;
+import com.j256.ormlite.stmt.QueryBuilder;
+import com.j256.ormlite.stmt.StatementBuilder.StatementType;
+
+/**
+ * Provides access to the dictionary database.
+ */
+public class MapContentProvider extends ContentProvider {
+ String TAG = "MapContentProvider";
+
+ public static String AUTHORITY = "net.cbaines.suma.provider";
+ // public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY
+ // + "/building");
+
+ // MIME types used for searching words or looking up a single definition
+ public static final String BUILDINGS_MIME_TYPE = ContentResolver.CURSOR_DIR_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.building";
+ public static final String BUILDING_MIME_TYPE = ContentResolver.CURSOR_ITEM_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.building";
+ public static final String BUS_STOPS_MIME_TYPE = ContentResolver.CURSOR_DIR_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.bus-stop";
+ public static final String BUS_STOP_MIME_TYPE = ContentResolver.CURSOR_ITEM_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.bus-stop";
+ public static final String SITES_MIME_TYPE = ContentResolver.CURSOR_DIR_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.site";
+ public static final String SITE_MIME_TYPE = ContentResolver.CURSOR_ITEM_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.site";
+ public static final String BUSES_MIME_TYPE = ContentResolver.CURSOR_DIR_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.bus";
+ public static final String BUS_MIME_TYPE = ContentResolver.CURSOR_ITEM_BASE_TYPE
+ + "/vnd.net.cbaines.suma.provider.bus";
+
+ private DatabaseHelper helper;
+
+ // UriMatcher stuff
+ private static final int SEARCH_BUILDINGS = 0;
+ private static final int GET_BUILDING = 1;
+ private static final int SEARCH_BUS_STOPS = 2;
+ private static final int GET_BUS_STOP = 3;
+ private static final int SEARCH_SITES = 4;
+ private static final int GET_SITE = 5;
+ private static final int SEARCH_BUSES = 6;
+ private static final int GET_BUS = 7;
+ private static final int SEARCH_SUGGEST = 8;
+ private static final int REFRESH_SHORTCUT = 9;
+ private static final UriMatcher sURIMatcher = buildUriMatcher();
+
+ /**
+ * Builds up a UriMatcher for search suggestion and shortcut refresh
+ * queries.
+ */
+ private static UriMatcher buildUriMatcher() {
+ UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
+ // to get definitions...
+ matcher.addURI(AUTHORITY, "building", SEARCH_BUILDINGS);
+ matcher.addURI(AUTHORITY, "building/*", GET_BUILDING);
+ matcher.addURI(AUTHORITY, "bus-stop", SEARCH_BUS_STOPS);
+ matcher.addURI(AUTHORITY, "bus-stop/*", GET_BUS_STOP);
+ matcher.addURI(AUTHORITY, "site", SEARCH_SITES);
+ matcher.addURI(AUTHORITY, "site/*", GET_SITE);
+ matcher.addURI(AUTHORITY, "bus", SEARCH_BUSES);
+ matcher.addURI(AUTHORITY, "bus/*", GET_BUS);
+
+ // to get suggestions...
+ matcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, SEARCH_SUGGEST);
+ matcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", SEARCH_SUGGEST);
+
+ /*
+ * The following are unused in this implementation, but if we include
+ * {@link SearchManager#SUGGEST_COLUMN_SHORTCUT_ID} as a column in our
+ * suggestions table, we could expect to receive refresh queries when a
+ * shortcutted suggestion is displayed in Quick Search Box, in which
+ * case, the following Uris would be provided and we would return a
+ * cursor with a single item representing the refreshed suggestion data.
+ */
+ matcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_SHORTCUT, REFRESH_SHORTCUT);
+ matcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_SHORTCUT + "/*", REFRESH_SHORTCUT);
+ return matcher;
+ }
+
+ @Override
+ public boolean onCreate() {
+ helper = OpenHelperManager.getHelper(this.getContext(), DatabaseHelper.class);
+ return true;
+ }
+
+ /**
+ * Handles all the dictionary searches and suggestion queries from the
+ * Search Manager. When requesting a specific word, the uri alone is
+ * required. When searching all of the dictionary for matches, the
+ * selectionArgs argument must carry the search query as the first element.
+ * All other arguments are ignored.
+ */
+ @Override
+ public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
+
+ // Use the UriMatcher to see what kind of query we have and format the
+ // db query accordingly
+ switch (sURIMatcher.match(uri)) {
+ case SEARCH_SUGGEST:
+ if (selectionArgs == null) {
+ throw new IllegalArgumentException("selectionArgs must be provided for the Uri: " + uri);
+ }
+ try {
+ return getSuggestions(selectionArgs[0]);
+ } catch (SQLException e1) {
+ e1.printStackTrace();
+ }
+ case SEARCH_BUILDINGS:
+ if (selectionArgs == null) {
+ throw new IllegalArgumentException("selectionArgs must be provided for the Uri: " + uri);
+ }
+ try {
+ return searchBuildings(selectionArgs[0]);
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ case GET_BUILDING:
+ try {
+ return getBuilding(uri);
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ case REFRESH_SHORTCUT:
+ try {
+ return refreshShortcut(uri);
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ default:
+ throw new IllegalArgumentException("Unknown Uri: " + uri);
+ }
+ }
+
+ private Cursor getSuggestions(String query) throws SQLException {
+ Log.v(TAG, "Got query for " + query);
+
+ Dao<Building, String> buildingDao = helper.getBuildingDao();
+
+ QueryBuilder<Building, String> qb = buildingDao.queryBuilder();
+ qb.where().like(Building.ID_FIELD_NAME, "%" + query + "%").or()
+ .like(Building.NAME_FIELD_NAME, "%" + query + "%");
+ PreparedQuery<Building> preparedQuery = qb.prepare();
+
+ List<Building> buildings = buildingDao.query(preparedQuery);
+ Log.v(TAG, "Returning " + buildings.size() + " buildings");
+
+ String[] columnNames = { BaseColumns._ID, SearchManager.SUGGEST_COLUMN_TEXT_1 };
+
+ MatrixCursor cursor = new MatrixCursor(columnNames, buildings.size());
+
+ int id = 0;
+ for (Building building : buildings) {
+ Log.v(TAG, "Building " + id + ", " + building.name);
+ Object[] values = { id++, building.name };
+ cursor.addRow(values);
+ }
+
+ return cursor;
+ }
+
+ private Cursor searchBuildings(String query) throws SQLException {
+ Dao<Building, String> buildingDao = helper.getBuildingDao();
+
+ QueryBuilder<Building, String> qb = buildingDao.queryBuilder();
+ qb.where().eq(Building.ID_FIELD_NAME, "%" + query + "%").or().eq(Building.NAME_FIELD_NAME, "%" + query + "%");
+ PreparedQuery<Building> preparedQuery = qb.prepare();
+
+ AndroidCompiledStatement compiledStatement = (AndroidCompiledStatement) preparedQuery.compile(helper
+ .getConnectionSource().getReadOnlyConnection(), StatementType.SELECT);
+ Cursor cursor = compiledStatement.getCursor();
+
+ return cursor;
+ }
+
+ private Cursor getBuilding(Uri uri) throws SQLException {
+ String buildingID = uri.getLastPathSegment();
+ Dao<Building, String> buildingDao = helper.getBuildingDao();
+
+ QueryBuilder<Building, String> qb = buildingDao.queryBuilder();
+ qb.where().eq(Building.ID_FIELD_NAME, buildingID);
+ PreparedQuery<Building> preparedQuery = qb.prepare();
+
+ AndroidCompiledStatement compiledStatement = (AndroidCompiledStatement) preparedQuery.compile(helper
+ .getConnectionSource().getReadOnlyConnection(), StatementType.SELECT);
+ Cursor cursor = compiledStatement.getCursor();
+
+ return cursor;
+ }
+
+ private Cursor refreshShortcut(Uri uri) throws SQLException {
+ /*
+ * This won't be called with the current implementation, but if we
+ * include {@link SearchManager#SUGGEST_COLUMN_SHORTCUT_ID} as a column
+ * in our suggestions table, we could expect to receive refresh queries
+ * when a shortcutted suggestion is displayed in Quick Search Box. In
+ * which case, this method will query the table for the specific word,
+ * using the given item Uri and provide all the columns originally
+ * provided with the suggestion query.
+ */
+ String buildingID = uri.getLastPathSegment();
+ Dao<Building, String> buildingDao = helper.getBuildingDao();
+
+ QueryBuilder<Building, String> qb = buildingDao.queryBuilder();
+ qb.where().eq(Building.ID_FIELD_NAME, buildingID);
+ PreparedQuery<Building> preparedQuery = qb.prepare();
+
+ AndroidCompiledStatement compiledStatement = (AndroidCompiledStatement) preparedQuery.compile(helper
+ .getConnectionSource().getReadOnlyConnection(), StatementType.SELECT);
+ Cursor cursor = compiledStatement.getCursor();
+
+ return cursor;
+ }
+
+ /**
+ * This method is required in order to query the supported types. It's also
+ * useful in our own query() method to determine the type of Uri received.
+ */
+ @Override
+ public String getType(Uri uri) {
+ switch (sURIMatcher.match(uri)) {
+ case SEARCH_BUILDINGS:
+ return BUILDINGS_MIME_TYPE;
+ case GET_BUILDING:
+ return BUILDING_MIME_TYPE;
+ case SEARCH_BUS_STOPS:
+ return BUS_STOPS_MIME_TYPE;
+ case GET_BUS_STOP:
+ return BUS_STOP_MIME_TYPE;
+ case SEARCH_SITES:
+ return SITES_MIME_TYPE;
+ case GET_SITE:
+ return SITE_MIME_TYPE;
+ case SEARCH_BUSES:
+ return BUSES_MIME_TYPE;
+ case GET_BUS:
+ return BUS_MIME_TYPE;
+ case SEARCH_SUGGEST:
+ return SearchManager.SUGGEST_MIME_TYPE;
+ case REFRESH_SHORTCUT:
+ return SearchManager.SHORTCUT_MIME_TYPE;
+ default:
+ throw new IllegalArgumentException("Unknown URL " + uri);
+ }
+ }
+
+ // Other required implementations...
+
+ @Override
+ public Uri insert(Uri uri, ContentValues values) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public int delete(Uri uri, String selection, String[] selectionArgs) {
+ throw new UnsupportedOperationException();
+ }
+
+ @Override
+ public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+ throw new UnsupportedOperationException();
+ }
+
+}