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// Copyright 2012 Google Inc. All Rights Reserved.

//

// 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 adwords.axis.v201302.basicoperations;

import com.google.api.ads.adwords.axis.factory.AdWordsServices;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroup;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroupPage;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroupServiceInterface;

import com.google.api.ads.adwords.axis.v201302.cm.OrderBy;

import com.google.api.ads.adwords.axis.v201302.cm.Paging;

import com.google.api.ads.adwords.axis.v201302.cm.Predicate;

import com.google.api.ads.adwords.axis.v201302.cm.PredicateOperator;

import com.google.api.ads.adwords.axis.v201302.cm.Selector;

import com.google.api.ads.adwords.axis.v201302.cm.SortOrder;

import com.google.api.ads.adwords.lib.client.AdWordsSession;

import com.google.api.ads.common.lib.auth.OfflineCredentials;

import com.google.api.ads.common.lib.auth.OfflineCredentials.Api;

import com.google.api.client.auth.oauth2.Credential;

/**

 * This example gets all ad groups in a campaign. To add an ad group, run

 * AddAdGroup.java. To get campaigns, run GetCampaigns.java.

 *

 * Credentials and properties in {@code fromFile()} are pulled from the

 * "ads.properties" file. See README for more info.

 *

 * Tags: AdGroupService.get

 *

 * @author Kevin Winter

 */

public class GetAdGroups {

  private static final int PAGE_SIZE = 100;

  public static void main(String[] args) throws Exception {

    // Generate a refreshable OAuth2 credential similar to a ClientLogin token

    // and can be used in place of a service account.

    Credential oAuth2Credential = new OfflineCredentials.Builder()

        .forApi(Api.ADWORDS)

        .fromFile()

        .build()

        .generateCredential();

    // Construct an AdWordsSession.

    AdWordsSession session = new AdWordsSession.Builder()

        .fromFile()

        .withOAuth2Credential(oAuth2Credential)

        .build();

    Long campaignId = Long.parseLong("INSERT_CAMPAIGN_ID_HERE");

    AdWordsServices adWordsServices = new AdWordsServices();

    runExample(adWordsServices, session, campaignId);

  }

  public static void runExample(

      AdWordsServices adWordsServices, AdWordsSession session, Long campaignId) throws Exception {

    // Get the AdGroupService.

    AdGroupServiceInterface adGroupService =

        adWordsServices.get(session, AdGroupServiceInterface.class);

    int offset = 0;

    boolean morePages = true;

    // Create selector.

    Selector selector = new Selector();

    selector.setFields(new String[] {"Id", "Name"});

    selector.setOrdering(new OrderBy[] {new OrderBy("Name", SortOrder.ASCENDING)});

    selector.setPaging(new Paging(offset, PAGE_SIZE));

    // Create predicates.

    Predicate campaignIdPredicate =

        new Predicate("CampaignId", PredicateOperator.IN, new String[] {campaignId.toString()});

    selector.setPredicates(new Predicate[] {campaignIdPredicate});

    while (morePages) {

      // Get all ad groups.

      AdGroupPage page = adGroupService.get(selector);

      // Display ad groups.

      if (page.getEntries() != null) {

        for (AdGroup adGroup : page.getEntries()) {

          System.out.println("Ad group with name \"" + adGroup.getName() + "\" and id \""

              + adGroup.getId() + "\" was found.");

        }

      } else {

        System.out.println("No ad groups were found.");

      }

      offset += PAGE_SIZE;

      selector.getPaging().setStartIndex(offset);

      morePages = offset < page.getTotalNumEntries();

    }

  }

}