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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.targeting;

import com.google.api.ads.adwords.axis.factory.AdWordsServices;
import com.google.api.ads.adwords.axis.v201302.cm.CampaignCriterion;
import com.google.api.ads.adwords.axis.v201302.cm.CampaignCriterionPage;
import com.google.api.ads.adwords.axis.v201302.cm.CampaignCriterionServiceInterface;
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.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 illustrates how to retrieve all the campaign criteria. To add
 * campaign criteria, run AddCampaignTargetingCriteria.java.
 *
 * Credentials and properties in {@code fromFile()} are pulled from the
 * "ads.properties" file. See README for more info.
 *
 * Tags: CampaignCriterionService.get
 *
 * @author Kevin Winter
 */
public class GetCampaignTargetingCriteria {

  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();

    AdWordsServices adWordsServices = new AdWordsServices();

    runExample(adWordsServices, session);
  }

  public static void runExample(
      AdWordsServices adWordsServices, AdWordsSession session) throws Exception {
    // Get the CampaignService.
    CampaignCriterionServiceInterface campaignCriterionService =
        adWordsServices.get(session, CampaignCriterionServiceInterface.class);

    int offset = 0;

    // Create selector.
    Selector selector = new Selector();
    selector.setFields(new String[] {"CampaignId", "Id", "CriteriaType", "PlatformName",
        "LanguageName", "LocationName", "KeywordText"});
    selector.setPredicates(new Predicate[] {new Predicate("CriteriaType", PredicateOperator.IN,
        new String[] {"KEYWORD", "LANGUAGE", "LOCATION", "PLATFORM"})});
    selector.setPaging(new Paging(offset, PAGE_SIZE));

    CampaignCriterionPage page = null;
    do {
      page = campaignCriterionService.get(selector);

      if (page.getEntries() != null) {
        // Display campaigns.
        for (CampaignCriterion campaignCriterion : page.getEntries()) {
          System.out.printf("Campaign criterion with campaign id '%s', criterion id '%s', "
              + "and type '%s' was found.\n", campaignCriterion.getCampaignId(), campaignCriterion
              .getCriterion().getId(), campaignCriterion.getCriterion().getCriterionType());
        }
        Thread.sleep(1000);
      } else {
        System.out.println("No campaign criteria were found.");
      }
      offset += PAGE_SIZE;
      selector.getPaging().setStartIndex(offset);
    } while (offset < page.getTotalNumEntries());
  }
}