Package rewards.ws.client

Source Code of rewards.ws.client.SoapRewardNetwork

package rewards.ws.client;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;

import org.springframework.util.xml.DomUtils;
import org.springframework.ws.client.core.support.WebServiceGatewaySupport;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

import rewards.AccountContribution;
import rewards.Dining;
import rewards.RewardConfirmation;
import rewards.RewardNetwork;
import rewards.AccountContribution.Distribution;

import common.money.MonetaryAmount;
import common.money.Percentage;

public class SoapRewardNetwork extends WebServiceGatewaySupport implements RewardNetwork {

  private static final String NAMESPACE_URI = "http://www.springsource.com/reward-network";

  public RewardConfirmation rewardAccountFor(Dining dining) {
    Element requestElement = prepareRequest(dining);
    DOMSource source = new DOMSource(requestElement);
    DOMResult result = new DOMResult();
    // TODO 6: Use the webServiceTemplate to send and receive a message (getWebServiceTemplate())
    return processResponse(result.getNode());
  }

  private Element prepareRequest(Dining dining) {
    Document document = getDocument();
    Element requestElement = document.createElementNS(NAMESPACE_URI, "rewardAccountForDiningRequest");
    requestElement.appendChild(mapDining(document, dining));
    return requestElement;
  }

  private Element mapDining(Document document, Dining dining) {
    Element diningElement = document.createElementNS(NAMESPACE_URI, "dining");
    // TODO 5: Populate the attributes of the dining element using the values from dining
    return diningElement;
  }

  private Document getDocument() {
    try {
      return DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
    } catch (ParserConfigurationException e) {
      throw new RuntimeException(e);
    }
  }

  private RewardConfirmation processResponse(Node node) {
    Element responseElement = (Element) node.getFirstChild();
    return mapRewardConfirmation(DomUtils.getChildElementByTagName(responseElement, "rewardConfirmation"));
  }

  private RewardConfirmation mapRewardConfirmation(Element confirmationElement) {
    String confirmationNumber = confirmationElement.getAttribute("confirmationNumber");
    String accountNumber = confirmationElement.getAttribute("accountNumber");
    String amount = confirmationElement.getAttribute("amount");
    List<Element> distributionElements = DomUtils.getChildElementsByTagName(confirmationElement, "distribution");
    AccountContribution contribution = new AccountContribution(accountNumber, MonetaryAmount.valueOf(amount),
        mapDistributions(distributionElements));
    return new RewardConfirmation(confirmationNumber, contribution);
  }

  private Set<Distribution> mapDistributions(List<Element> distributionElements) {
    Set<Distribution> distributions = new HashSet<Distribution>(distributionElements.size());
    for (Element element : distributionElements) {
      String beneficiary = element.getAttribute("beneficiary");
      String amount = element.getAttribute("amount");
      String percentage = element.getAttribute("percentage");
      String totalSavings = element.getAttribute("totalSavings");
      Distribution distribution = new Distribution(beneficiary, MonetaryAmount.valueOf(amount), Percentage
          .valueOf(percentage), MonetaryAmount.valueOf(totalSavings));
      distributions.add(distribution);
    }
    return distributions;
  }


}
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