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From mahanare <mahan...@gmail.com>
Subject Struts 2 Type conversion
Date Wed, 25 Mar 2009 12:26:54 GMT

Hi, I need help in resolving type conversion issue in struts 2.

Here is my problem definition.

I have a structs 2 action class called AuditTrailAction.
Here is the class definition. It contains a List<AuditView> I have given my
AuditView bean definition below.

Action contains a List which intern contains a bean containing a Map of
another bean. 

I need to display this data into a tabular structure in jsp page. 

List<AuditView>, each AuditView bean contains Map<Auditproperty> and
AuditProperty bean contains couple of properties.

for each AuditView bean in the list, I need to iterate through all the
AuditProperty beans and display their properties into a row (html table
row).

I have been spending time whole day today with no luck. it looks like there
is some type conversion issue here. I went through
http://struts.apache.org/2.x/docs/type-conversion.html, but not getting a
solution for my scenario which looks little complex. 

Please help me!
Thanks
harinath



public class AuditTrailAction extends ActionSupport implements RequestAware
{
	private List<AuditView> results;
	private int pageSize = 20;
	private int page;
	private AuditLogDao auditLog;
	private Map request;
	private String entity;
	private String pk;
	private List<String> columnLabels;

	public List<String> getColumnLabels() {
		return columnLabels;
	}

	public void setColumnLabels(List<String> columnLabels) {
		this.columnLabels = columnLabels;
	}

	public int getPage() {
		return page;
	}

	public void setPage(int page) {
		this.page = page;
	}

	public String getEntity() {
		return entity;
	}

	public void setEntity(String entity) {
		this.entity = entity;
	}

	public String getPk() {
		return pk;
	}

	public void setPk(String pk) {
		this.pk = pk;
	}

	public void setAuditLog(AuditLogDao auditLog) {
		this.auditLog = auditLog;
	}

	public List<AuditView> getResults() {
		return results;
	}

	public void setResults(List<AuditView> results) {
		this.results = results;
	}

	public String execute() {
		
		try {
			results = auditLog.getAuditTrialView(page, pageSize, entity, pk);
			columnLabels = new ArrayList<String>();
			
			if (results != null && results.size() != 0) {
				AuditView view = results.get(0);
				Map<String, AuditProperty> mapProperties = view.getPropertyList();
				Set<String> properties = mapProperties.keySet();
				for (String prop : properties) {
					columnLabels.add(prop);
				}
			}
		} catch (AuditException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		/*
		 * try {
		 * 
		 * results =auditLog.getAuditTrialInfo(page, pageSize); //
		 * request.put("results", results); } catch (AuditException e) { // TODO
		 * Auto-generated catch block e.printStackTrace(); }
		 */
		return SUCCESS;

	}

	public void setRequest(Map<String, Object> request) {
		// TODO Auto-generated method stub
		this.request = request;
	}

}



@SuppressWarnings("serial")
public class AuditView implements Serializable {
	
	private Map<String,AuditProperty> propertyList;// = new
ArrayList<AuditProperty>();

	public Map<String, AuditProperty> getPropertyList() {
		if(propertyList ==null)
		{
			propertyList = new HashMap<String, AuditProperty>();
		}
		return propertyList;
	}

	public void setPropertyList(Map<String, AuditProperty> propertyList) {
		this.propertyList = propertyList;
	}

}

And AuditProperty bean

 */
@SuppressWarnings("serial")
public class AuditProperty implements Serializable {
	
	private static final Log logger = LogFactory.getLog(AuditProperty.class);
	private String oldValue;
	private String newValue;
	private boolean updateFlag;
	
	
	
	public boolean isUpdateFlag() {
		return updateFlag;
	}
	public void setUpdateFlag(boolean updateFlag) {
		this.updateFlag = updateFlag;
	}
	public String getOldValue() {		
		return oldValue;
		
	}
	public void setOldValue(String oldValue) {
		this.oldValue = oldValue;
	}
	public String getNewValue() {
		return newValue;
	}
	public void setNewValue(String newValue) {
		this.newValue = newValue;
	}
	public String toString()
	{
		String value= oldValue + " : " + newValue + " : " + updateFlag;
		logger.debug(value);
		return value;
	}
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