content: /*
   * 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 com.android.vcard;
  
  import android.content.ContentProviderOperation;
  import android.content.ContentProviderResult;
  import android.content.ContentResolver;
  import android.content.OperationApplicationException;
  import android.net.Uri;
  import android.os.RemoteException;
  import android.provider.ContactsContract;
  import android.util.Log;
  
  import java.util.ArrayList;
  
  /**
   * <P>
   * {@link VCardEntryHandler} implementation which commits the entry to ContentResolver.
   * </P>
   * <P>
   * Note:<BR />
   * Each vCard may contain big photo images encoded by BASE64,
   * If we store all vCard entries in memory, OutOfMemoryError may be thrown.
   * Thus, this class push each VCard entry into ContentResolver immediately.
   * </P>
   */
  public class VCardEntryCommitter implements VCardEntryHandler {
      public static String LOG_TAG = VCardConstants.LOG_TAG;
  
      private final ContentResolver mContentResolver;
      private long mTimeToCommit;
      private int mCounter;
      private ArrayList<ContentProviderOperation> mOperationList;
      private final ArrayList<Uri> mCreatedUris = new ArrayList<Uri>();
  
      public VCardEntryCommitter(ContentResolver resolver) {
          mContentResolver = resolver;
      }
  
      @Override
      public void onStart() {
      }
  
      @Override
      public void onEnd() {
          if (mOperationList != null) {
              mCreatedUris.add(pushIntoContentResolver(mOperationList));
          }
  
          if (VCardConfig.showPerformanceLog()) {
              Log.d(LOG_TAG, String.format("time to commit entries: %d ms", mTimeToCommit));
          }
      }
  
      @Override
      public void onEntryCreated(final VCardEntry vcardEntry) {
          final long start = System.currentTimeMillis();
          mOperationList = vcardEntry.constructInsertOperations(mContentResolver, mOperationList);
          mCounter++;
          if (mCounter >= 20) {
              mCreatedUris.add(pushIntoContentResolver(mOperationList));
              mCounter = 0;
              mOperationList = null;
          }
          mTimeToCommit += System.currentTimeMillis() - start;
      }
  
      private Uri pushIntoContentResolver(ArrayList<ContentProviderOperation> operationList) {
          try {
              final ContentProviderResult[] results = mContentResolver.applyBatch(
                      ContactsContract.AUTHORITY, operationList);
  
              // the first result is always the raw_contact. return it's uri so
              // that it can be found later. do null checking for badly behaving
              // ContentResolvers
              return ((results == null || results.length == 0 || results[0] == null)
                              ? null : results[0].uri);
          } catch (RemoteException e) {
              Log.e(LOG_TAG, String.format("%s: %s", e.toString(), e.getMessage()));
              return null;
          } catch (OperationApplicationException e) {
              Log.e(LOG_TAG, String.format("%s: %s", e.toString(), e.getMessage()));
              return null;
          }
      }
  
      /**
       * Returns the list of created Uris. This list should not be modified by the caller as it is
       * not a clone.
       */
     public ArrayList<Uri> getCreatedUris() {
          return mCreatedUris;
      }
  }