drools-eclipse/org.guvnor.tools/src/org/guvnor/tools/actions/ShowHistoryAction.java
public void run(IAction action) {
        String repositoryLoc = null;
        String fullPath = null;

        if (selectedNode != null) {
            repositoryLoc = selectedNode.getGuvnorRepository().getLocation();
            fullPath = selectedNode.getFullPath();
        } else {
            if (selectedFile == null
               || props == null) {
                return;
            }
            repositoryLoc = props.getRepository();
            fullPath = props.getFullpath();
        }

        IResponse response = null;
        try {
            IWebDavClient client = WebDavServerCache.getWebDavClient(repositoryLoc);
            if (client == null) {
                client = WebDavClientFactory.createClient(new URL(repositoryLoc));
                WebDavServerCache.cacheWebDavClient(repositoryLoc, client);
            }
            InputStream ins = null;
            try {
                response = client.getResourceVersions(fullPath);
                ins = response.getInputStream();
            } catch (WebDavException wde) {
                if (wde.getErrorCode() != IResponse.SC_UNAUTHORIZED) {
                    // If not an authentication failure, we don't know what to do with it
                    throw wde;
                }
                boolean retry = PlatformUtils.getInstance().
                                    authenticateForServer(repositoryLoc, client);
                if (retry) {
                    response = client.getResourceVersions(fullPath);
                    ins = response.getInputStream();
                }
            }
            if (ins != null) {
                Properties verProps = new Properties();
                verProps.load(ins);
                ResourceHistoryView view = PlatformUtils.getResourceHistoryView();
                if (view != null) {
                    view.setEntries(repositoryLoc, fullPath, verProps);
                }
            }
        } catch (Exception e) {
            Activator.getDefault().displayError(IStatus.ERROR, e.getMessage(), e, true);
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException ioe) {
                    Activator.getDefault().writeLog(IStatus.ERROR, ioe.getMessage(), ioe);
                }
            }
        }
    }
public void run(IAction action) {
        String repositoryLoc = null;
        String fullPath = null;

        if (selectedNode != null) {
            repositoryLoc = selectedNode.getGuvnorRepository().getLocation();
            fullPath = selectedNode.getFullPath();
        } else {
            if (selectedFile == null
               || props == null) {
                return;
            }
            repositoryLoc = props.getRepository();
            fullPath = props.getFullpath();
        }

        IResponse response = null;
        try {
            IWebDavClient client = WebDavServerCache.getWebDavClient(repositoryLoc);
            if (client == null) {
                client = WebDavClientFactory.createClient(new URL(repositoryLoc));
                WebDavServerCache.cacheWebDavClient(repositoryLoc, client);
            }
            InputStream ins = null;
            try {
                response = client.getResourceVersions(fullPath);
                ins = response.getInputStream();
            } catch (WebDavException wde) {
                if (wde.getErrorCode() != IResponse.SC_UNAUTHORIZED) {
                    // If not an authentication failure, we don't know what to do with it
                    throw wde;
                }
                boolean retry = PlatformUtils.getInstance().
                                    authenticateForServer(repositoryLoc, client);
                if (retry) {
                    response = client.getResourceVersions(fullPath);
                    ins = response.getInputStream();
                }
            }
            if (ins != null) {
                Properties verProps = new Properties();
                verProps.load(ins);
                ResourceHistoryView view = PlatformUtils.getResourceHistoryView();
                if (view != null) {
                    view.setEntries(repositoryLoc, fullPath, verProps);
                }
            }
        } catch (Exception e) {
            Activator.getDefault().displayError(IStatus.ERROR, e.getMessage(), e, true);
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException ioe) {
                    Activator.getDefault().writeLog(IStatus.ERROR, ioe.getMessage(), ioe);
                }
            }
        }
    }
/*
(non-Javadoc)
@see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)