CallLogProvider.java

/*
 * Copyright (C) 2009 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 cn.edu.tsinghua.hpc.tcontacts.provider;

import java.util.HashMap;

import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.provider.CallLog;
import android.provider.CallLog.Calls;
import cn.edu.tsinghua.hpc.tcontacts.provider.ContactsDatabaseHelper.Tables;
import cn.edu.tsinghua.hpc.tcontacts.util.TCallLog;

/**
 * Call log content provider.
 */
public class CallLogProvider extends ContentProvider {

    private static final int CALLS = 1;

    private static final int CALLS_ID = 2;

    private static final int CALLS_FILTER = 3;

    private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);
    static {
        sURIMatcher.addURI(TCallLog.AUTHORITY, "calls", CALLS);
        sURIMatcher.addURI(TCallLog.AUTHORITY, "calls/#", CALLS_ID);
        sURIMatcher.addURI(TCallLog.AUTHORITY, "calls/filter/*", CALLS_FILTER);
    }

    private static final HashMap<String, String> sCallsProjectionMap;
    static {

        // Calls projection map
        sCallsProjectionMap = new HashMap<String, String>();
        sCallsProjectionMap.put(Calls._ID, Calls._ID);
        sCallsProjectionMap.put(Calls.NUMBER, Calls.NUMBER);
        sCallsProjectionMap.put(Calls.DATE, Calls.DATE);
        sCallsProjectionMap.put(Calls.DURATION, Calls.DURATION);
        sCallsProjectionMap.put(Calls.TYPE, Calls.TYPE);
        sCallsProjectionMap.put(Calls.NEW, Calls.NEW);
        sCallsProjectionMap.put(Calls.CACHED_NAME, Calls.CACHED_NAME);
        sCallsProjectionMap.put(Calls.CACHED_NUMBER_TYPE, Calls.CACHED_NUMBER_TYPE);
        sCallsProjectionMap.put(Calls.CACHED_NUMBER_LABEL, Calls.CACHED_NUMBER_LABEL);
    }

    private ContactsDatabaseHelper mDbHelper;
    private DatabaseUtils.InsertHelper mCallsInserter;
    private boolean mUseStrictPhoneNumberComparation;

    @Override
    public boolean onCreate() {
        final Context context = getContext();

        mDbHelper = getDatabaseHelper(context);
        SQLiteDatabase db = mDbHelper.getWritableDatabase();
        mCallsInserter = new DatabaseUtils.InsertHelper(db, Tables.CALLS);

        // FIXME: 
        mUseStrictPhoneNumberComparation = false;
            //context.getResources().getBoolean(
            //        com.android.internal.R.bool.config_use_strict_phone_number_comparation);

        return true;
    }

    /* Visible for testing */
    protected ContactsDatabaseHelper getDatabaseHelper(final Context context) {
        return ContactsDatabaseHelper.getInstance(context);
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
            String sortOrder) {
        SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
        int match = sURIMatcher.match(uri);
        switch (match) {
            case CALLS: {
                qb.setTables("calls");
                qb.setProjectionMap(sCallsProjectionMap);
                break;
            }

            case CALLS_ID: {
                qb.setTables("calls");
                qb.setProjectionMap(sCallsProjectionMap);
                qb.appendWhere("calls._id=");
                qb.appendWhere(uri.getPathSegments().get(1));
                break;
            }

            case CALLS_FILTER: {
                qb.setTables("calls");
                qb.setProjectionMap(sCallsProjectionMap);
                String phoneNumber = uri.getPathSegments().get(2);
                qb.appendWhere("PHONE_NUMBERS_EQUAL(number, ");
                qb.appendWhereEscapeString(phoneNumber);
                qb.appendWhere(mUseStrictPhoneNumberComparation ? ", 1)" : ", 0)");
                break;
            }

            default:
                throw new IllegalArgumentException("Unknown URL " + uri);
        }

        final SQLiteDatabase db = mDbHelper.getReadableDatabase();
        Cursor c = qb.query(db, projection, selection, selectionArgs, null, null, sortOrder, null);
        if (c != null) {
            c.setNotificationUri(getContext().getContentResolver(), TCallLog.CONTENT_URI);
        }
        return c;
    }

    @Override
    public String getType(Uri uri) {
        int match = sURIMatcher.match(uri);
        switch (match) {
            case CALLS:
                return Calls.CONTENT_TYPE;
            case CALLS_ID:
                return Calls.CONTENT_ITEM_TYPE;
            case CALLS_FILTER:
                return Calls.CONTENT_TYPE;
            default:
                throw new IllegalArgumentException("Unknown URI: " + uri);
        }
    }

    @Override
    public Uri insert(Uri uri, ContentValues values) {
        long rowId = mCallsInserter.insert(values);
        if (rowId > 0) {
            notifyChange();
            return ContentUris.withAppendedId(uri, rowId);
        }
        return null;
    }

    @Override
    public int update(Uri url, ContentValues values, String selection, String[] selectionArgs) {
        final SQLiteDatabase db = mDbHelper.getWritableDatabase();
        String where;
        final int matchedUriId = sURIMatcher.match(url);
        switch (matchedUriId) {
            case CALLS:
                where = selection;
                break;

            case CALLS_ID:
                where = TDatabaseUtilities.concatenateWhere(selection, Calls._ID + "="
                        + url.getPathSegments().get(1));
                break;

            default:
                throw new UnsupportedOperationException("Cannot update URL: " + url);
        }

        int count = db.update(Tables.CALLS, values, where, selectionArgs);
        notifyChange();
        return count;
    }

    @Override
    public int delete(Uri uri, String selection, String[] selectionArgs) {
        final SQLiteDatabase db = mDbHelper.getWritableDatabase();

        final int matchedUriId = sURIMatcher.match(uri);
        switch (matchedUriId) {
            case CALLS:
                int count = db.delete(Tables.CALLS, selection, selectionArgs);
                notifyChange();
                return count;

            default:
                throw new UnsupportedOperationException("Cannot delete that URL: " + uri);
        }
    }

    protected void notifyChange() {
        getContext().getContentResolver().notifyChange(CallLog.CONTENT_URI, null,
                false /* wake up sync adapters */);
    }
}