public class InvoiceServlet extends ReflexServlet {

// MODELのPackage名を指定

private static final String MODEL_PACKAGE = "jp.reflexworks.invoice.model";

public void doPut(HttpServletRequest req, HttpServletResponse resp) throws IOException {

boolean toXml = true;

if (req.getParameter("xml") != null) {

toXml = false; // toJSON

}

try {

// クライアントから受け取ったXML（JSON）をオブジェクトに変換

Invoice invoice = (Invoice) getEntity(req, MODEL_PACKAGE);

// Update実行

JdoUtils jdoUtils = new JdoUtils();

jdoUtils.update(invoice);

Status status = new Status();

status.code = HttpStatus.SC_OK;

status.message = "Updated.";

doResponse(resp, status, toXml, MODEL_PACKAGE);

}

// 楽観的ロック失敗時の処理

catch (ConcurrentModificationException e) {

Status status = new Status();

status.code = HttpStatus.SC_CONFLICT;

status.message = "Optimistic locking failed.";

try {

doResponse(resp, status, toXml, MODEL_PACKAGE);

} catch (Exception ee) {

ee.printStackTrace();

}

}

// 更新エラー時の処理

catch (JDOException e) {

Status status = new Status();

status.code = HttpStatus.SC_CONFLICT;

status.message = "Updating failed.";

try {

doResponse(resp, status, toXml, MODEL_PACKAGE);

} catch (Exception ee) {

ee.printStackTrace();

}

} catch (Exception e) {

e.printStackTrace();

Status status = new Status();

status.code = HttpStatus.SC_INTERNAL_SERVER_ERROR;

status.message = e.getMessage();

try {

doResponse(resp, status, toXml, MODEL_PACKAGE);

} catch (Exception ee) {

ee.printStackTrace();

}

}

}

}