Android Open Source - Mobisevera S3 Hour Entry Container

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License

The source code is released under:

Apache License

Java Source Code

package com.digitalfingertip.mobisevera;
/*from  w w w  . ja  va2 s.co  m*/
import java.io.StringReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import android.util.Log;

/**
 * This class contains the logic for handling hour entries (ie. hour claims made by the user)
 * @author juha
 *
 */

public class S3HourEntryContainer {
  private static final String TAG = "Sevedroid";
  private static final S3HourEntryContainer instance = new S3HourEntryContainer();
  private static String myXml = null;
  private static XPath xpath = null;
  private static InputSource inputSource = null;
  
  // The xpath expressions for digging out the valued needed for this class's methods
  
  private static final String XPATH_HOURENTRY_QUANTITY = 
        "/s:Envelope/s:Body/x:GetHourEntriesByDateAndUserGUIDResponse/x:GetHourEntriesByDateAndUserGUIDResult/a:HourEntry/a:Quantity";
  private static final String XPATH_HOURENTRY_CASEGUID = 
      "/s:Envelope/s:Body/x:GetHourEntriesByDateAndUserGUIDResponse/x:GetHourEntriesByDateAndUserGUIDResult/a:HourEntry/a:CaseGUID";
  private static final String XPATH_HOURENTRY_DESCRIPTION = 
      "/s:Envelope/s:Body/x:GetHourEntriesByDateAndUserGUIDResponse/x:GetHourEntriesByDateAndUserGUIDResult/a:HourEntry/a:Description";

  private S3HourEntryContainer() {
    
  }
  
  public static S3HourEntryContainer getInstance() {
    return instance;
  }
  
  public void setHourEntriesXML(final String xmlForHourEntries) {
    myXml = xmlForHourEntries;
    xpath = XPathFactory.newInstance().newXPath();
  }
  
  public ArrayList<S3HourEntryItem> getHourEntries() {
    NodeList descriptionNodes = null;
    NodeList quantityNodes = null;
    NodeList guidNodes = null;
    S3NamespaceContext mnsp = new S3NamespaceContext();
    xpath.setNamespaceContext(mnsp);
    if(xpath == null) {
      Log.e(TAG,"There's something wrong with class, xpath parser is null.");
      return null;
    }
    try {
      inputSource = new InputSource (new StringReader(myXml));
      descriptionNodes = (NodeList)xpath.evaluate(XPATH_HOURENTRY_DESCRIPTION,inputSource,XPathConstants.NODESET);
      Log.d(TAG,"descriptionNodes match:"+descriptionNodes.getLength()+" items.");
      inputSource = new InputSource(new StringReader(myXml));
      quantityNodes = (NodeList)xpath.evaluate(XPATH_HOURENTRY_QUANTITY,inputSource,XPathConstants.NODESET);
      Log.d(TAG,"quantityNodes match:"+quantityNodes.getLength()+" items.");
      inputSource = new InputSource(new StringReader(myXml));
      guidNodes = (NodeList)xpath.evaluate(XPATH_HOURENTRY_CASEGUID,inputSource,XPathConstants.NODESET);
      Log.d(TAG,"guidNodes match:"+guidNodes.getLength()+" items.");
    } catch (XPathExpressionException e) {
      Log.e(TAG,"XPathExpression evaluation failed, exception is:",e);
      return null;
    }
    // sanity checks
    int totalItems = guidNodes.getLength();
    if(totalItems != descriptionNodes.getLength()) {
      Log.e(TAG,"Node lists are not of same lenght! (guid & description) lists");
      return null;
    }
    if(totalItems != quantityNodes.getLength()) {
      Log.e(TAG,"Node lists are not of same length! (guid & guantity lists)");
      return null;
    }
    ArrayList<S3HourEntryItem> res = new ArrayList<S3HourEntryItem>(totalItems);
    for(int i=0; i< totalItems; i++) {
      S3HourEntryItem HourEntry = new S3HourEntryItem();
      Node descriptionNode = descriptionNodes.item(i);
      Node quantityNode = quantityNodes.item(i);
      Node guidNode = guidNodes.item(i);
      HourEntry.setDescription(descriptionNode.getTextContent());
      HourEntry.setCaseGuid(guidNode.getTextContent());
      HourEntry.setQuantity(quantityNode.getTextContent());
      res.add(HourEntry);
    }
    return res;
    
  }
  
  /**
   * Using queried work hours from getHourEntries, find which projects (or in S3 terms, "cases") are the targets of this work
   * @return S3CaseContainer.S3CaseItems
   */
  
  public String [] getDistinctCaseGUIDsFromHourEntryList(ArrayList<S3HourEntryItem> hoursList) {
    HashSet<String> distinctKeySet = new HashSet<String>();
    if(hoursList == null) {
      Log.d(TAG,"Got null hoursList, returning null...");
      return null;
    }
    Log.d(TAG,"Getting distinct projects from hourslist of "+hoursList.size()+" items.");
    for (S3HourEntryItem hoursItem : hoursList) {
      if(!distinctKeySet.contains(hoursItem.getCaseGuid())) {
        distinctKeySet.add(hoursItem.getCaseGuid());
      }
    }
    String[] distinctCaseGuids = new String[distinctKeySet.size()];
    Iterator<String> it = distinctKeySet.iterator();
    for (int i = 0; i < distinctKeySet.size(); i++) {
      distinctCaseGuids[i] = it.next();
    }
    Log.d(TAG,"Returning "+distinctCaseGuids.length+" distinct case guids.");
    return distinctCaseGuids;
  }
  
  
}

Java Source Code List

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