taverna-workbench-perspective-myexperiment/src/main/java/net/sf/taverna/t2/ui/perspectives/myexperiment/model/Workflow.java - incubator-taverna-workbench - Git at Google

 // Copyright (C) 2008 The University of Manchester, University of Southampton
 // and Cardiff University
 package net.sf.taverna.t2.ui.perspectives.myexperiment.model;

 import java.net.URI;
 import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;

 import org.apache.log4j.Logger;
 import org.jdom.Document;
 import org.jdom.Element;

 /**
  * @author Jiten Bhagat, Sergejs Aleksejevs
  */
 public class Workflow extends Resource {
   // CONSTANTS
   public static final String MIME_TYPE_TAVERNA_1 = "application/vnd.taverna.scufl+xml";
   public static final String MIME_TYPE_TAVERNA_2 = "application/vnd.taverna.t2flow+xml";

   private int accessType;

   private int version;
   private User uploader;
   private URI preview;
   private URI thumbnail;
   private URI thumbnailBig;
   private URI svg;
   private License license;

   private String visibleType;
   private String contentType;
   private URI contentUri;
   byte[] content;

   private List<Tag> tags;
   private List<Comment> comments;
   private List<Resource> credits;
   private List<Resource> attributions;
   private HashMap<String, ArrayList<HashMap<String, String>>> components;

   public Workflow() {
 	super();
 	this.setItemType(Resource.WORKFLOW);
   }

   public int getAccessType() {
 	return this.accessType;
   }

   public void setAccessType(int accessType) {
 	this.accessType = accessType;
   }

   public int getVersion() {
 	return version;
   }

   public void setVersion(int version) {
 	this.version = version;
   }

   public User getUploader() {
 	return uploader;
   }

   public void setUploader(User uploader) {
 	this.uploader = uploader;
   }

   public URI getPreview() {
 	return preview;
   }

   public void setPreview(URI preview) {
 	this.preview = preview;
   }

   public URI getThumbnail() {
 	return thumbnail;
   }

   public void setThumbnail(URI thumbnail) {
 	this.thumbnail = thumbnail;
   }

   public URI getSvg() {
 	return svg;
   }

   public void setSvg(URI svg) {
 	this.svg = svg;
   }

   public License getLicense() {
 	return license;
   }

   public void setLicense(License license) {
 	this.license = license;
   }

   public URI getContentUri() {
 	return contentUri;
   }

   public void setContentUri(URI contentUri) {
 	this.contentUri = contentUri;
   }

   public String getVisibleType() {
 	return this.visibleType;
   }

   public void setVisibleType(String visibleType) {
 	this.visibleType = visibleType;
   }

   public String getContentType() {
 	return contentType;
   }

   public void setContentType(String contentType) {
 	this.contentType = contentType;
   }

   public byte[] getContent() {
 	return this.content;
   }

   public void setContent(byte[] content) {
 	this.content = content;
   }

   public List<Tag> getTags() {
 	return tags;
   }

   public List<Comment> getComments() {
 	return comments;
   }

   public List<Resource> getCredits() {
 	return credits;
   }

   public List<Resource> getAttributions() {
 	return this.attributions;
   }

   public HashMap<String, ArrayList<HashMap<String, String>>> getComponents() {
 	return this.components;
   }

   public URI getThumbnailBig() {
 	return thumbnailBig;
   }

   public void setThumbnailBig(URI thumbnailBig) {
 	this.thumbnailBig = thumbnailBig;
   }

   /**
    * Determines whether the current instance of the workflow is a Taverna 1 or
    * Taverna 2 workflow
    */
   public boolean isTavernaWorkflow() {
 	return (contentType.equals(Workflow.MIME_TYPE_TAVERNA_1) || contentType.equals(Workflow.MIME_TYPE_TAVERNA_2));
   }

   public boolean isTaverna1Workflow() {
 	return (contentType.equals(Workflow.MIME_TYPE_TAVERNA_1));
   }

   public boolean isTaverna2Workflow() {
 	return (contentType.equals(Workflow.MIME_TYPE_TAVERNA_2));
   }

   /**
    * A helper method to return a set of API elements that are needed to satisfy
    * request of a particular type - e.g. creating a listing of resources or
    * populating full preview, etc.
    *
    * @param iRequestType
    *          A constant value from Resource class.
    * @return Comma-separated string containing values of required API elements.
    */
   public static String getRequiredAPIElements(int iRequestType) {
 	String strElements = "";

 	// cases higher up in the list are supersets of those that come below -
 	// hence no "break" statements are required, because 'falling through' the
 	// switch statement is the desired behaviour in this case
 	//
 	// cases that follow after the first 'break' statement are to be treated
 	// separately - these require individual processing and have nothing to do
 	// with joining different elements for various listings / previews
 	switch (iRequestType) {
 	  case Resource.REQUEST_FULL_PREVIEW:
 		strElements += "created-at,updated-at,preview,thumbnail-big,svg,license-type,content-uri,"
 			+ "tags,comments,ratings,credits,attributions,components,";
 	  case Resource.REQUEST_FULL_LISTING:
 		strElements += "uploader,type,";
 	  case Resource.REQUEST_SHORT_LISTING:
 		strElements += "id,title,thumbnail,description,privileges,content-type";
 		break;
 	  case Resource.REQUEST_WORKFLOW_CONTENT_ONLY:
 		strElements += "type,content-type,content";
 		break;
 	}

 	return (strElements);
   }

   public static Workflow buildFromXML(Document doc, Logger logger) {
 	// if no XML document was supplied, return NULL
 	if (doc == null)
 	  return (null);

 	// call main method which parses XML document starting from root element
 	return (Workflow.buildFromXML(doc.getRootElement(), logger));
   }

   // class method to build a workflow instance from XML
   @SuppressWarnings("unchecked")
   public static Workflow buildFromXML(Element docRootElement, Logger logger) {
 	// return null to indicate an error if XML document contains no root element
 	if (docRootElement == null)
 	  return (null);

 	Workflow w = new Workflow();

 	try {
 	  // Access type
 	  w.setAccessType(Util.getAccessTypeFromXMLElement(docRootElement.getChild("privileges")));

 	  // URI
 	  w.setURI(docRootElement.getAttributeValue("uri"));

 	  // Resource URI
 	  w.setResource(docRootElement.getAttributeValue("resource"));

 	  // Version
 	  String version = docRootElement.getAttributeValue("version");
 	  if (version != null && !version.equals("")) {
 		w.setVersion(Integer.parseInt(version));
 	  }

 	  // Id
 	  String id = docRootElement.getChildText("id");
 	  if (id == null || id.equals("")) {
 		id = "API Error - No workflow ID supplied";
 		logger.error("Error while parsing workflow XML data - no ID provided for workflow with title: \""
 			+ docRootElement.getChildText("title") + "\"");
 	  }
 	  w.setID(id);

 	  // Title
 	  w.setTitle(docRootElement.getChildText("title"));

 	  // Description
 	  w.setDescription(docRootElement.getChildText("description"));

 	  // Uploader
 	  Element uploaderElement = docRootElement.getChild("uploader");
 	  w.setUploader(Util.instantiatePrimitiveUserFromElement(uploaderElement));

 	  // Created at
 	  String createdAt = docRootElement.getChildText("created-at");
 	  if (createdAt != null && !createdAt.equals("")) {
 		w.setCreatedAt(MyExperimentClient.parseDate(createdAt));
 	  }

 	  // Updated at
 	  String updatedAt = docRootElement.getChildText("updated-at");
 	  if (updatedAt != null && !updatedAt.equals("")) {
 		w.setUpdatedAt(MyExperimentClient.parseDate(updatedAt));
 	  }

 	  // Preview
 	  String preview = docRootElement.getChildText("preview");
 	  if (preview != null && !preview.equals("")) {
 		w.setPreview(new URI(preview));
 	  }

 	  // Thumbnail
 	  String thumbnail = docRootElement.getChildText("thumbnail");
 	  if (thumbnail != null && !thumbnail.equals("")) {
 		w.setThumbnail(new URI(thumbnail));
 	  }

 	  // Thumbnail (big)
 	  String thumbnailBig = docRootElement.getChildText("thumbnail-big");
 	  if (thumbnailBig != null && !thumbnailBig.equals("")) {
 		w.setThumbnailBig(new URI(thumbnailBig));
 	  }

 	  // SVG
 	  String svg = docRootElement.getChildText("svg");
 	  if (svg != null && !svg.equals("")) {
 		w.setSvg(new URI(svg));
 	  }

 	  // License
 	  w.setLicense(License.getInstance(docRootElement.getChildText("license-type")));

 	  // Content URI
 	  String contentUri = docRootElement.getChildText("content-uri");
 	  if (contentUri != null && !contentUri.equals("")) {
 		w.setContentUri(new URI(contentUri));
 	  }

 	  // Type and Content-Type
 	  w.setVisibleType(docRootElement.getChildText("type"));
 	  w.setContentType(docRootElement.getChildText("content-type"));

 	  // Tags
 	  w.tags = new ArrayList<Tag>();
 	  w.tags.addAll(Util.retrieveTags(docRootElement));

 	  // Comments
 	  w.comments = new ArrayList<Comment>();
 	  w.getComments().addAll(Util.retrieveComments(docRootElement, w));

 	  // Credits
 	  w.credits = new ArrayList<Resource>();
 	  w.getCredits().addAll(Util.retrieveCredits(docRootElement));

 	  // Attributions
 	  w.attributions = new ArrayList<Resource>();
 	  w.getAttributions().addAll(Util.retrieveAttributions(docRootElement));

 	  // Components
 	  w.components = new HashMap<String, ArrayList<HashMap<String, String>>>();

 	  Element componentsElement = docRootElement.getChild("components");
 	  if (componentsElement != null) {
 		// ** inputs **
 		Element sourcesElement = componentsElement.getChild("sources");
 		if (sourcesElement != null) {
 		  ArrayList<HashMap<String, String>> inputs = new ArrayList<HashMap<String, String>>();
 		  List<Element> sourcesNodes = sourcesElement.getChildren();
 		  for (Element e : sourcesNodes) {
 			HashMap<String, String> curInput = new HashMap<String, String>();
 			curInput.put("name", e.getChildText("name"));
 			curInput.put("description", e.getChildText("description"));
 			inputs.add(curInput);
 		  }

 		  // put all inputs that were found into the overall component collection
 		  w.getComponents().put("inputs", inputs);
 		}

 		// ** outputs **
 		Element outputsElement = componentsElement.getChild("sinks");
 		if (outputsElement != null) {
 		  ArrayList<HashMap<String, String>> sinks = new ArrayList<HashMap<String, String>>();
 		  List<Element> outputsNodes = outputsElement.getChildren();
 		  for (Element e : outputsNodes) {
 			HashMap<String, String> curOutput = new HashMap<String, String>();
 			curOutput.put("name", e.getChildText("name"));
 			curOutput.put("description", e.getChildText("description"));
 			sinks.add(curOutput);
 		  }

 		  // put all outputs that were found into the overall component collection
 		  w.getComponents().put("outputs", sinks);
 		}

 		// ** processors **
 		Element processorsElement = componentsElement.getChild("processors");
 		if (processorsElement != null) {
 		  ArrayList<HashMap<String, String>> processors = new ArrayList<HashMap<String, String>>();
 		  List<Element> processorsNodes = processorsElement.getChildren();
 		  for (Element e : processorsNodes) {
 			HashMap<String, String> curProcessor = new HashMap<String, String>();
 			curProcessor.put("name", e.getChildText("name"));
 			curProcessor.put("type", e.getChildText("type"));
 			curProcessor.put("description", e.getChildText("description"));
 			processors.add(curProcessor);
 		  }

 		  // put all processors that were found into the overall component collection
 		  w.getComponents().put("processors", processors);
 		}

 		// ** links **
 		Element linksElement = componentsElement.getChild("links");
 		if (linksElement != null) {
 		  ArrayList<HashMap<String, String>> links = new ArrayList<HashMap<String, String>>();
 		  List<Element> linksNodes = linksElement.getChildren();
 		  for (Element e : linksNodes) {
 			HashMap<String, String> curLink = new HashMap<String, String>();
 			String strSource = e.getChild("source").getChildText("node")
 				+ (e.getChild("source").getChildText("port") == null ? "" : (":" + e.getChild("source").getChildText("port")));
 			curLink.put("source", strSource);
 			String strSink = e.getChild("sink").getChildText("node")
 				+ (e.getChild("sink").getChildText("port") == null ? "" : (":" + e.getChild("sink").getChildText("port")));
 			curLink.put("sink", strSink);
 			links.add(curLink);
 		  }

 		  // put all links that were found into the overall component collection
 		  w.getComponents().put("links", links);
 		}
 	  }

 	  logger.debug("Found information for worklow with ID: " + w.getID()
 		  + ", Title: " + w.getTitle());
 	} catch (Exception e) {
 	  logger.error("Failed midway through creating workflow object from XML", e);
 	}

 	// return created workflow instance
 	return (w);
   }

 }
	// Copyright (C) 2008 The University of Manchester, University of Southampton
	// and Cardiff University
	package net.sf.taverna.t2.ui.perspectives.myexperiment.model;

	import java.net.URI;
	import java.text.DateFormat;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;

	import org.apache.log4j.Logger;
	import org.jdom.Document;
	import org.jdom.Element;

	/**
	* @author Jiten Bhagat, Sergejs Aleksejevs
	*/
	public class Workflow extends Resource {
	// CONSTANTS
	public static final String MIME_TYPE_TAVERNA_1 = "application/vnd.taverna.scufl+xml";
	public static final String MIME_TYPE_TAVERNA_2 = "application/vnd.taverna.t2flow+xml";

	private int accessType;

	private int version;
	private User uploader;
	private URI preview;
	private URI thumbnail;
	private URI thumbnailBig;
	private URI svg;
	private License license;

	private String visibleType;
	private String contentType;
	private URI contentUri;
	byte[] content;

	private List<Tag> tags;
	private List<Comment> comments;
	private List<Resource> credits;
	private List<Resource> attributions;
	private HashMap<String, ArrayList<HashMap<String, String>>> components;

	public Workflow() {
	super();
	this.setItemType(Resource.WORKFLOW);
	}

	public int getAccessType() {
	return this.accessType;
	}

	public void setAccessType(int accessType) {
	this.accessType = accessType;
	}

	public int getVersion() {
	return version;
	}

	public void setVersion(int version) {
	this.version = version;
	}

	public User getUploader() {
	return uploader;
	}

	public void setUploader(User uploader) {
	this.uploader = uploader;
	}

	public URI getPreview() {
	return preview;
	}

	public void setPreview(URI preview) {
	this.preview = preview;
	}

	public URI getThumbnail() {
	return thumbnail;
	}

	public void setThumbnail(URI thumbnail) {
	this.thumbnail = thumbnail;
	}

	public URI getSvg() {
	return svg;
	}

	public void setSvg(URI svg) {
	this.svg = svg;
	}

	public License getLicense() {
	return license;
	}

	public void setLicense(License license) {
	this.license = license;
	}

	public URI getContentUri() {
	return contentUri;
	}

	public void setContentUri(URI contentUri) {
	this.contentUri = contentUri;
	}

	public String getVisibleType() {
	return this.visibleType;
	}

	public void setVisibleType(String visibleType) {
	this.visibleType = visibleType;
	}

	public String getContentType() {
	return contentType;
	}

	public void setContentType(String contentType) {
	this.contentType = contentType;
	}

	public byte[] getContent() {
	return this.content;
	}

	public void setContent(byte[] content) {
	this.content = content;
	}

	public List<Tag> getTags() {
	return tags;
	}

	public List<Comment> getComments() {
	return comments;
	}

	public List<Resource> getCredits() {
	return credits;
	}

	public List<Resource> getAttributions() {
	return this.attributions;
	}

	public HashMap<String, ArrayList<HashMap<String, String>>> getComponents() {
	return this.components;
	}

	public URI getThumbnailBig() {
	return thumbnailBig;
	}

	public void setThumbnailBig(URI thumbnailBig) {
	this.thumbnailBig = thumbnailBig;
	}

	/**
	* Determines whether the current instance of the workflow is a Taverna 1 or
	* Taverna 2 workflow
	*/
	public boolean isTavernaWorkflow() {
	return (contentType.equals(Workflow.MIME_TYPE_TAVERNA_1) \|\| contentType.equals(Workflow.MIME_TYPE_TAVERNA_2));
	}

	public boolean isTaverna1Workflow() {
	return (contentType.equals(Workflow.MIME_TYPE_TAVERNA_1));
	}

	public boolean isTaverna2Workflow() {
	return (contentType.equals(Workflow.MIME_TYPE_TAVERNA_2));
	}

	/**
	* A helper method to return a set of API elements that are needed to satisfy
	* request of a particular type - e.g. creating a listing of resources or
	* populating full preview, etc.
	*
	* @param iRequestType
	* A constant value from Resource class.
	* @return Comma-separated string containing values of required API elements.
	*/
	public static String getRequiredAPIElements(int iRequestType) {
	String strElements = "";

	// cases higher up in the list are supersets of those that come below -
	// hence no "break" statements are required, because 'falling through' the
	// switch statement is the desired behaviour in this case
	//
	// cases that follow after the first 'break' statement are to be treated
	// separately - these require individual processing and have nothing to do
	// with joining different elements for various listings / previews
	switch (iRequestType) {
	case Resource.REQUEST_FULL_PREVIEW:
	strElements += "created-at,updated-at,preview,thumbnail-big,svg,license-type,content-uri,"
	+ "tags,comments,ratings,credits,attributions,components,";
	case Resource.REQUEST_FULL_LISTING:
	strElements += "uploader,type,";
	case Resource.REQUEST_SHORT_LISTING:
	strElements += "id,title,thumbnail,description,privileges,content-type";
	break;
	case Resource.REQUEST_WORKFLOW_CONTENT_ONLY:
	strElements += "type,content-type,content";
	break;
	}

	return (strElements);
	}

	public static Workflow buildFromXML(Document doc, Logger logger) {
	// if no XML document was supplied, return NULL
	if (doc == null)
	return (null);

	// call main method which parses XML document starting from root element
	return (Workflow.buildFromXML(doc.getRootElement(), logger));
	}

	// class method to build a workflow instance from XML
	@SuppressWarnings("unchecked")
	public static Workflow buildFromXML(Element docRootElement, Logger logger) {
	// return null to indicate an error if XML document contains no root element
	if (docRootElement == null)
	return (null);

	Workflow w = new Workflow();

	try {
	// Access type
	w.setAccessType(Util.getAccessTypeFromXMLElement(docRootElement.getChild("privileges")));

	// URI
	w.setURI(docRootElement.getAttributeValue("uri"));

	// Resource URI
	w.setResource(docRootElement.getAttributeValue("resource"));

	// Version
	String version = docRootElement.getAttributeValue("version");
	if (version != null && !version.equals("")) {
	w.setVersion(Integer.parseInt(version));
	}

	// Id
	String id = docRootElement.getChildText("id");
	if (id == null \|\| id.equals("")) {
	id = "API Error - No workflow ID supplied";
	logger.error("Error while parsing workflow XML data - no ID provided for workflow with title: \""
	+ docRootElement.getChildText("title") + "\"");
	}
	w.setID(id);

	// Title
	w.setTitle(docRootElement.getChildText("title"));

	// Description
	w.setDescription(docRootElement.getChildText("description"));

	// Uploader
	Element uploaderElement = docRootElement.getChild("uploader");
	w.setUploader(Util.instantiatePrimitiveUserFromElement(uploaderElement));

	// Created at
	String createdAt = docRootElement.getChildText("created-at");
	if (createdAt != null && !createdAt.equals("")) {
	w.setCreatedAt(MyExperimentClient.parseDate(createdAt));
	}

	// Updated at
	String updatedAt = docRootElement.getChildText("updated-at");
	if (updatedAt != null && !updatedAt.equals("")) {
	w.setUpdatedAt(MyExperimentClient.parseDate(updatedAt));
	}

	// Preview
	String preview = docRootElement.getChildText("preview");
	if (preview != null && !preview.equals("")) {
	w.setPreview(new URI(preview));
	}

	// Thumbnail
	String thumbnail = docRootElement.getChildText("thumbnail");
	if (thumbnail != null && !thumbnail.equals("")) {
	w.setThumbnail(new URI(thumbnail));
	}

	// Thumbnail (big)
	String thumbnailBig = docRootElement.getChildText("thumbnail-big");
	if (thumbnailBig != null && !thumbnailBig.equals("")) {
	w.setThumbnailBig(new URI(thumbnailBig));
	}

	// SVG
	String svg = docRootElement.getChildText("svg");
	if (svg != null && !svg.equals("")) {
	w.setSvg(new URI(svg));
	}

	// License
	w.setLicense(License.getInstance(docRootElement.getChildText("license-type")));

	// Content URI
	String contentUri = docRootElement.getChildText("content-uri");
	if (contentUri != null && !contentUri.equals("")) {
	w.setContentUri(new URI(contentUri));
	}

	// Type and Content-Type
	w.setVisibleType(docRootElement.getChildText("type"));
	w.setContentType(docRootElement.getChildText("content-type"));

	// Tags
	w.tags = new ArrayList<Tag>();
	w.tags.addAll(Util.retrieveTags(docRootElement));

	// Comments
	w.comments = new ArrayList<Comment>();
	w.getComments().addAll(Util.retrieveComments(docRootElement, w));

	// Credits
	w.credits = new ArrayList<Resource>();
	w.getCredits().addAll(Util.retrieveCredits(docRootElement));

	// Attributions
	w.attributions = new ArrayList<Resource>();
	w.getAttributions().addAll(Util.retrieveAttributions(docRootElement));

	// Components
	w.components = new HashMap<String, ArrayList<HashMap<String, String>>>();

	Element componentsElement = docRootElement.getChild("components");
	if (componentsElement != null) {
	// inputs
	Element sourcesElement = componentsElement.getChild("sources");
	if (sourcesElement != null) {
	ArrayList<HashMap<String, String>> inputs = new ArrayList<HashMap<String, String>>();
	List<Element> sourcesNodes = sourcesElement.getChildren();
	for (Element e : sourcesNodes) {
	HashMap<String, String> curInput = new HashMap<String, String>();
	curInput.put("name", e.getChildText("name"));
	curInput.put("description", e.getChildText("description"));
	inputs.add(curInput);
	}

	// put all inputs that were found into the overall component collection
	w.getComponents().put("inputs", inputs);
	}

	// outputs
	Element outputsElement = componentsElement.getChild("sinks");
	if (outputsElement != null) {
	ArrayList<HashMap<String, String>> sinks = new ArrayList<HashMap<String, String>>();
	List<Element> outputsNodes = outputsElement.getChildren();
	for (Element e : outputsNodes) {
	HashMap<String, String> curOutput = new HashMap<String, String>();
	curOutput.put("name", e.getChildText("name"));
	curOutput.put("description", e.getChildText("description"));
	sinks.add(curOutput);
	}

	// put all outputs that were found into the overall component collection
	w.getComponents().put("outputs", sinks);
	}

	// processors
	Element processorsElement = componentsElement.getChild("processors");
	if (processorsElement != null) {
	ArrayList<HashMap<String, String>> processors = new ArrayList<HashMap<String, String>>();
	List<Element> processorsNodes = processorsElement.getChildren();
	for (Element e : processorsNodes) {
	HashMap<String, String> curProcessor = new HashMap<String, String>();
	curProcessor.put("name", e.getChildText("name"));
	curProcessor.put("type", e.getChildText("type"));
	curProcessor.put("description", e.getChildText("description"));
	processors.add(curProcessor);
	}

	// put all processors that were found into the overall component collection
	w.getComponents().put("processors", processors);
	}

	// links
	Element linksElement = componentsElement.getChild("links");
	if (linksElement != null) {
	ArrayList<HashMap<String, String>> links = new ArrayList<HashMap<String, String>>();
	List<Element> linksNodes = linksElement.getChildren();
	for (Element e : linksNodes) {
	HashMap<String, String> curLink = new HashMap<String, String>();
	String strSource = e.getChild("source").getChildText("node")
	+ (e.getChild("source").getChildText("port") == null ? "" : (":" + e.getChild("source").getChildText("port")));
	curLink.put("source", strSource);
	String strSink = e.getChild("sink").getChildText("node")
	+ (e.getChild("sink").getChildText("port") == null ? "" : (":" + e.getChild("sink").getChildText("port")));
	curLink.put("sink", strSink);
	links.add(curLink);
	}

	// put all links that were found into the overall component collection
	w.getComponents().put("links", links);
	}
	}

	logger.debug("Found information for worklow with ID: " + w.getID()
	+ ", Title: " + w.getTitle());
	} catch (Exception e) {
	logger.error("Failed midway through creating workflow object from XML", e);
	}

	// return created workflow instance
	return (w);
	}

	}