Android Open Source - Mobisevera S3 Case Container

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License

The source code is released under:

Apache License

Java Source Code

package com.digitalfingertip.mobisevera;
/*w w  w  .  j  a  v a2 s . c  o m*/
import java.io.StringReader;
import java.util.ArrayList;

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.content.Context;
import android.util.Log;

/**
 * This singleton class wraps in itself the functionality to handle Severa 3 case objects, ie.
 * those whih can be used to claim hours to. To use, feed it the SOAP xml message got from the 
 * getAllCasesXml method of the MobiseveraCommsUtils 
 * @author juha
 *
 */

public class S3CaseContainer {
  
  private static final String TAG = "Sevedroid";
  private static final S3CaseContainer instance = new S3CaseContainer();
  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_ACCOUNT_NAMES = 
      "/s:Envelope/s:Body/x:GetAllCasesResponse/x:GetAllCasesResult/a:Case/a:AccountName";

  private static final String XPATH_INTERNAL_NAMES = 
      "/s:Envelope/s:Body/x:GetAllCasesResponse/x:GetAllCasesResult/a:Case/a:InternalName";
      
  private static final String XPATH_CASE_GUIDS = 
      "/s:Envelope/s:Body/x:GetAllCasesResponse/x:GetAllCasesResult/a:Case/a:GUID";
  
  // These are for querying a single item from GetCaseByGuid xml response
  
  private static final String XPATH_ACCOUNT_NAME =
      "/s:Envelope/s:Body/x:GetCaseByGUIDResponse/x:GetCaseByGUIDResult/a:AccountName";
  
  private static final String XPATH_INTERNAL_NAME =
      "/s:Envelope/s:Body/x:GetCaseByGUIDResponse/x:GetCaseByGUIDResult/a:InternalName";
  
  private static final String XPATH_CASE_GUI =
      "/s:Envelope/s:Body/x:GetCaseByGUIDResponse/x:GetCaseByGUIDResult/a:GUID";
  
  
  
  // protect constructor, force access through getInstance
  private S3CaseContainer() {
    xpath = XPathFactory.newInstance().newXPath();
  }
  
  public static S3CaseContainer getInstance() {
    XPathFactory xpf = XPathFactory.newInstance();
    xpath = xpf.newXPath();
    return instance;
  }
  
  public static S3CaseContainer getInstance(final String xmlForCases) {
    myXml = xmlForCases;
    xpath = XPathFactory.newInstance().newXPath();
    return instance;
  }
  
  public void setCasesXML(final String xmlForCases) {
    myXml = xmlForCases;
    xpath = XPathFactory.newInstance().newXPath();
  }
  
  public void setCaseXML(final String xmlForCase) {
    //Internally, it's just xml. This however requires the caller to understand whether they are parsing
    //a response to GetCaseByGUID or GetCases - bit awkward.
    //TODO: Think of a way to make this explicitly known to the caller
    setCasesXML(xmlForCase);
  }
  
  /**
   * Get a list of all cases (or projects) which are available to the user
   * @return
   */
  
  public ArrayList<S3CaseItem> getCases() {
    NodeList accountNodes = null;
    NodeList internalNameNodes = 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));
      accountNodes = (NodeList)xpath.evaluate(XPATH_ACCOUNT_NAMES,inputSource,XPathConstants.NODESET);
      Log.d(TAG,"accountNodes match:"+accountNodes.getLength()+" items.");
      inputSource = new InputSource(new StringReader(myXml));
      internalNameNodes = (NodeList)xpath.evaluate(XPATH_INTERNAL_NAMES,inputSource,XPathConstants.NODESET);
      Log.d(TAG,"internalNameNodes match:"+internalNameNodes.getLength()+" items.");
      inputSource = new InputSource(new StringReader(myXml));
      guidNodes = (NodeList)xpath.evaluate(XPATH_CASE_GUIDS,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 = accountNodes.getLength();
    if(totalItems != internalNameNodes.getLength()) {
      Log.e(TAG,"Node lists are not of same lenght! (account & internalName) lists");
      return null;
    }
    if(totalItems != guidNodes.getLength()) {
      Log.e(TAG,"Node lists are not of same length! (account & guid lists)");
      return null;
    }
    ArrayList<S3CaseItem> res = new ArrayList<S3CaseItem>(totalItems);
    for(int i=0; i< totalItems; i++) {
      S3CaseItem caseItem = new S3CaseItem();
      Node accountNode = accountNodes.item(i);
      Node internalNameNode = internalNameNodes.item(i);
      Node guidNode = guidNodes.item(i);
      caseItem.setCaseAccountName(accountNode.getTextContent());
      caseItem.setCaseGuid(guidNode.getTextContent());
      caseItem.setCaseInternalName(internalNameNode.getTextContent());
      res.add(caseItem);
    }
    return res;
    
  }
  
  public S3CaseItem getCase() {
    Node accountNode = null;
    Node internalNameNode = null;
    Node guidNode = 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));
      accountNode = (Node)xpath.evaluate(XPATH_ACCOUNT_NAME,inputSource,XPathConstants.NODE);
      Log.d(TAG,"accountNode match:"+accountNode+" items.");
      inputSource = new InputSource(new StringReader(myXml));
      internalNameNode = (Node)xpath.evaluate(XPATH_INTERNAL_NAMES,inputSource,XPathConstants.NODE);
      Log.d(TAG,"internalNameNodes match:"+internalNameNode+" items.");
      inputSource = new InputSource(new StringReader(myXml));
      guidNode = (Node)xpath.evaluate(XPATH_CASE_GUIDS,inputSource,XPathConstants.NODE);
      Log.d(TAG,"guidNodes match:"+guidNode+" items.");
    } catch (XPathExpressionException e) {
      Log.e(TAG,"XPathExpression evaluation failed, exception is:",e);
      return null;
    }
    S3CaseItem res = new S3CaseItem();
    res.setCaseAccountName(accountNode.getTextContent());
    res.setCaseGuid(guidNode.getTextContent());
    res.setCaseInternalName(internalNameNode.getTextContent());
    return res;  
  }
      
  /**
   * Returns a case item, which can be used as a first element of the spinner,
   * displaying [select project].
   * @return
   */
  
  public static S3CaseItem getEmptySelectorElement(Context c) {
    S3CaseItem res = new S3CaseItem();
    res.setCaseAccountName(c.getString(R.string.select_case_item_title));
    res.setCaseGuid(null);
    res.setCaseInternalName(c.getString(R.string.select_case_item_title));
    return res;
  }
  
}

Java Source Code List

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