| /* |
| * Copyright (C) 2017 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 com.android.dialer.calllog.database; |
| |
| import android.content.ContentValues; |
| import android.database.Cursor; |
| import android.database.MatrixCursor; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.WorkerThread; |
| import com.android.dialer.DialerPhoneNumber; |
| import com.android.dialer.calllog.database.contract.AnnotatedCallLogContract.AnnotatedCallLog; |
| import com.android.dialer.calllog.database.contract.AnnotatedCallLogContract.CoalescedAnnotatedCallLog; |
| import com.android.dialer.calllog.datasources.CallLogDataSource; |
| import com.android.dialer.calllog.datasources.DataSources; |
| import com.android.dialer.common.Assert; |
| import com.android.dialer.phonenumberproto.DialerPhoneNumberUtil; |
| import com.google.i18n.phonenumbers.PhoneNumberUtil; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import javax.inject.Inject; |
| |
| /** |
| * Coalesces call log rows by combining some adjacent rows. |
| * |
| * <p>Applies the business which logic which determines which adjacent rows should be coalasced, and |
| * then delegates to each data source to determine how individual columns should be aggregated. |
| */ |
| public class Coalescer { |
| |
| private final DataSources dataSources; |
| |
| @Inject |
| Coalescer(DataSources dataSources) { |
| this.dataSources = dataSources; |
| } |
| |
| /** |
| * Reads the entire {@link AnnotatedCallLog} database into memory from the provided {@code |
| * allAnnotatedCallLog} parameter and then builds and returns a new {@link MatrixCursor} which is |
| * the result of combining adjacent rows which should be collapsed for display purposes. |
| * |
| * @param allAnnotatedCallLogRowsSortedByTimestampDesc all {@link AnnotatedCallLog} rows, sorted |
| * by timestamp descending |
| * @return a new {@link MatrixCursor} containing the {@link CoalescedAnnotatedCallLog} rows to |
| * display |
| */ |
| @WorkerThread |
| @NonNull |
| Cursor coalesce(@NonNull Cursor allAnnotatedCallLogRowsSortedByTimestampDesc) { |
| Assert.isWorkerThread(); |
| |
| // Note: This method relies on rowsShouldBeCombined to determine which rows should be combined, |
| // but delegates to data sources to actually aggregate column values. |
| |
| DialerPhoneNumberUtil dialerPhoneNumberUtil = |
| new DialerPhoneNumberUtil(PhoneNumberUtil.getInstance()); |
| |
| MatrixCursor allCoalescedRowsMatrixCursor = |
| new MatrixCursor( |
| CoalescedAnnotatedCallLog.ALL_COLUMNS, |
| Assert.isNotNull(allAnnotatedCallLogRowsSortedByTimestampDesc).getCount()); |
| |
| if (allAnnotatedCallLogRowsSortedByTimestampDesc.moveToFirst()) { |
| int coalescedRowId = 0; |
| |
| List<ContentValues> currentRowGroup = new ArrayList<>(); |
| |
| do { |
| ContentValues currentRow = |
| cursorRowToContentValues(allAnnotatedCallLogRowsSortedByTimestampDesc); |
| |
| if (currentRowGroup.isEmpty()) { |
| currentRowGroup.add(currentRow); |
| continue; |
| } |
| |
| ContentValues previousRow = currentRowGroup.get(currentRowGroup.size() - 1); |
| |
| if (!rowsShouldBeCombined(dialerPhoneNumberUtil, previousRow, currentRow)) { |
| ContentValues coalescedRow = coalesceRowsForAllDataSources(currentRowGroup); |
| coalescedRow.put(CoalescedAnnotatedCallLog.NUMBER_CALLS, currentRowGroup.size()); |
| addContentValuesToMatrixCursor( |
| coalescedRow, allCoalescedRowsMatrixCursor, coalescedRowId++); |
| currentRowGroup.clear(); |
| } |
| currentRowGroup.add(currentRow); |
| } while (allAnnotatedCallLogRowsSortedByTimestampDesc.moveToNext()); |
| |
| // Deal with leftover rows. |
| ContentValues coalescedRow = coalesceRowsForAllDataSources(currentRowGroup); |
| coalescedRow.put(CoalescedAnnotatedCallLog.NUMBER_CALLS, currentRowGroup.size()); |
| addContentValuesToMatrixCursor(coalescedRow, allCoalescedRowsMatrixCursor, coalescedRowId); |
| } |
| return allCoalescedRowsMatrixCursor; |
| } |
| |
| private static ContentValues cursorRowToContentValues(Cursor cursor) { |
| ContentValues values = new ContentValues(); |
| String[] columns = cursor.getColumnNames(); |
| int length = columns.length; |
| for (int i = 0; i < length; i++) { |
| if (cursor.getType(i) == Cursor.FIELD_TYPE_BLOB) { |
| values.put(columns[i], cursor.getBlob(i)); |
| } else { |
| values.put(columns[i], cursor.getString(i)); |
| } |
| } |
| return values; |
| } |
| |
| /** |
| * @param row1 a row from {@link AnnotatedCallLog} |
| * @param row2 a row from {@link AnnotatedCallLog} |
| */ |
| private static boolean rowsShouldBeCombined( |
| DialerPhoneNumberUtil dialerPhoneNumberUtil, ContentValues row1, ContentValues row2) { |
| // TODO: Real implementation. |
| DialerPhoneNumber number1; |
| DialerPhoneNumber number2; |
| try { |
| number1 = DialerPhoneNumber.parseFrom(row1.getAsByteArray(AnnotatedCallLog.NUMBER)); |
| number2 = DialerPhoneNumber.parseFrom(row2.getAsByteArray(AnnotatedCallLog.NUMBER)); |
| } catch (InvalidProtocolBufferException e) { |
| throw Assert.createAssertionFailException("error parsing DialerPhoneNumber proto", e); |
| } |
| |
| if (!number1.hasDialerInternalPhoneNumber() && !number2.hasDialerInternalPhoneNumber()) { |
| // Empty numbers should not be combined. |
| return false; |
| } |
| |
| if (!number1.hasDialerInternalPhoneNumber() || !number2.hasDialerInternalPhoneNumber()) { |
| // An empty number should not be combined with a non-empty number. |
| return false; |
| } |
| return dialerPhoneNumberUtil.isExactMatch(number1, number2); |
| } |
| |
| /** |
| * Delegates to data sources to aggregate individual columns to create a new coalesced row. |
| * |
| * @param individualRows {@link AnnotatedCallLog} rows sorted by timestamp descending |
| * @return a {@link CoalescedAnnotatedCallLog} row |
| */ |
| private ContentValues coalesceRowsForAllDataSources(List<ContentValues> individualRows) { |
| ContentValues coalescedValues = new ContentValues(); |
| for (CallLogDataSource dataSource : dataSources.getDataSourcesIncludingSystemCallLog()) { |
| coalescedValues.putAll(dataSource.coalesce(individualRows)); |
| } |
| return coalescedValues; |
| } |
| |
| /** |
| * @param contentValues a {@link CoalescedAnnotatedCallLog} row |
| * @param matrixCursor represents {@link CoalescedAnnotatedCallLog} |
| */ |
| private static void addContentValuesToMatrixCursor( |
| ContentValues contentValues, MatrixCursor matrixCursor, int rowId) { |
| MatrixCursor.RowBuilder rowBuilder = matrixCursor.newRow(); |
| rowBuilder.add(CoalescedAnnotatedCallLog._ID, rowId); |
| for (Map.Entry<String, Object> entry : contentValues.valueSet()) { |
| rowBuilder.add(entry.getKey(), entry.getValue()); |
| } |
| } |
| } |