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package net.sf.basedb.relax.servlet; |
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import java.io.IOException; |
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import javax.servlet.ServletException; |
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import javax.servlet.http.HttpServlet; |
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import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
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import org.json.simple.JSONObject; |
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import net.sf.basedb.core.DbControl; |
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import net.sf.basedb.core.SessionControl; |
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import net.sf.basedb.core.SimpleProgressReporter; |
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import net.sf.basedb.relax.JsonUtil; |
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import net.sf.basedb.relax.Relax; |
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import net.sf.basedb.util.Values; |
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import net.sf.basedb.util.error.ThrowableUtil; |
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/** |
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Get information about the current session. |
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*/ |
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public class SessionServlet |
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extends HttpServlet |
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{ |
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private static final long serialVersionUID = -3842354795495914729L; |
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public SessionServlet() |
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{} |
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@Override |
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) |
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throws ServletException, IOException |
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{ |
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String cmd = req.getParameter("cmd"); |
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JsonUtil.setJsonResponseHeaders(resp); |
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JSONObject json = new JSONObject(); |
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json.put("status", "ok"); |
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SessionControl sc = null; |
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DbControl dc = null; |
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try |
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{ |
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if ("GetProgress".equals(cmd)) |
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{ |
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/** |
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Get progress information for a named progress bar. |
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The 'name' parameter is the same name that was |
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submitted to the 'Relax.showLoadingAnimation()` |
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JavaScript method. The working servlet MUST: |
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|
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1. Create a SimpleProgressReporter instance |
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2. Store the instance in SessionControl.setSessionSetting() |
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with the same name we get here |
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3. Call ProgressReporter.display() at regular intervals |
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*/ |
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String name = req.getParameter("name"); |
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sc = Relax.getSessionControl(req); |
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Object tmp = sc.getSessionSetting(name); |
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if (tmp instanceof SimpleProgressReporter) |
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{ |
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SimpleProgressReporter progress = (SimpleProgressReporter)tmp; |
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JSONObject jsonProgress = new JSONObject(); |
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jsonProgress.put("name", name); |
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jsonProgress.put("percent", progress.getPercent()); |
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jsonProgress.put("message", progress.getMessage()); |
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json.put("progress", jsonProgress); |
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} |
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} |
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else if ("CheckIsAdmin".equals(cmd)) |
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{ |
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String message = Values.getString(req.getParameter("message"), "this wizard"); |
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sc = Relax.getSessionControl(req); |
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Relax.checkIsAdmin(sc, message); |
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} |
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} |
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catch (Throwable t) |
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{ |
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t.printStackTrace(); |
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json.clear(); |
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json.put("status", "error"); |
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json.put("message", t.getMessage()); |
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json.put("stacktrace", ThrowableUtil.stackTraceToString(t)); |
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} |
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finally |
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{ |
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if (dc != null) dc.close(); |
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json.writeJSONString(resp.getWriter()); |
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} |
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} |
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|
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} |