Fetch data for version A.1 only for EPM Document

Hi,

We have written a utility to fetch the URL Drawing of a part created in Creo.

Code Snippet :

final QueryResult qr = PersistenceHelper.manager.find((StatementSpec)qs);

            while (qr.hasMoreElements()) {

                EPMDocument epmm = (EPMDocument) qr.nextElement();

                if ( (epmm.getNumber().endsWith(".drw")) || (epmm.getNumber().endsWith(".DRW")) && (internalUrl != null) && (internalUrl.length() > 0) )

                {

                    Representation defaultRep = RepresentationHelper.service

                            .getDefaultRepresentation(epmm);

                    ContentHolder holder;

                        try {

                            holder = ContentHelper.service.getContents(defaultRep);

                            Vector contents = ContentHelper

                                    .getContentListAll(holder);

                            ApplicationData data = null;

                            WTProperties propName = WTProperties.getLocalProperties();

                            String protocol= propName

                                    .getProperty("wt.webserver.protocol");

                            String rmiHost = propName

                                    .getProperty("wt.rmi.server.hostname");

                            String portUsed = propName.getProperty("wt.webserver.port");

                            for (int i = 0; i < contents.size() ; i++) {

                                if (contents.get(i) instanceof ApplicationData) {

                                    data = (ApplicationData) contents.get(i);

                                    URL aURL = WVSContentHelper.getDownloadURL(

                                            data, holder);

                                 String cURL = null;

                                 String result = null;

                                    if ( aURL.toString().contains("pvs") ){

                                    cURL= aURL.toString();

                                    result = cURL.substring(cURL.indexOf("ContentHolder=")+14, cURL.indexOf("&u8=1"));

                                    String rmiHostName = "&objref=OR%3A";

                                    internalUrl = internalUrl

                                            .substring(

                                                    internalUrl.indexOf("createCDialogWindow('") +21,

                                                    internalUrl

                                                            .indexOf("http:"));

                                    finalURL = protocol + "://" + rmiHost + ":" + portUsed +internalUrl + cURL +  rmiHostName + result;

                                            ;

                                    break;

It was working fine, but recently we found a limitation. If we revise the Drawing from Windchill and then re run the utility, It shows a Java Array size error.

wt.method.MethodContextMonitor.contexts.rmi wcadmin - 2016-06-13 14:19:41.555 +0530, 2vtvcx;ipds3u2q;6884;36sq4k;1, -, -, -, wcadmin, 10.101.11.1, ext.havells.utilities.Eight, prepareDataForExcel, , 0, 571, 0.255354489, 2, 0.002308162, 0.5148033, 0.787921406

java.lang.StringIndexOutOfBoundsException: String index out of range: -21

    at java.lang.String.substring(String.java:1911)

    at ext.havells.utilities.Eight.getDrawingLink(Eight.java:504)

    at ext.havells.utilities.Eight.writeIntoExcel(Eight.java:283)

    at ext.havells.utilities.Eight.prepareDataForExcel(Eight.java:174)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:606)

and so on.

On my investigation, i think that it is because of these multi revisions of drawing, it is failing.I tried using some APIs could not solve this .

Request you to help me solve this.