server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/ServerAnswer.java

   1 package org.argeo.server;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5
   6 import org.apache.commons.io.IOUtils;
   7
   8 /** Answer to an execution of a remote service which performed changes. */
   9 public class ServerAnswer {
  10         public final static String OK = "OK";
  11         public final static String ERROR = "ERROR";
  12
  13         private String status = OK;
  14         private String message = "";
  15
  16         /** Canonical constructor */
  17         public ServerAnswer(String status, String message) {
  18                 setStatus(status);
  19                 if (message == null)
  20                         throw new ArgeoServerException("Message cannot be null");
  21                 this.message = message;
  22         }
  23
  24         /** Empty constructor */
  25         public ServerAnswer() {
  26         }
  27
  28         public String getStatus() {
  29                 return status;
  30         }
  31
  32         public void setStatus(String status) {
  33                 if (status == null || (!status.equals(OK) && !status.equals(ERROR)))
  34                         throw new ArgeoServerException("Bad status format: " + status);
  35                 this.status = status;
  36         }
  37
  38         public String getMessage() {
  39                 return message;
  40         }
  41
  42         public void setMessage(String message) {
  43                 this.message = message;
  44         }
  45
  46         public Boolean isOk() {
  47                 return status.equals(OK);
  48         }
  49
  50         public Boolean isError() {
  51                 return status.equals(ERROR);
  52         }
  53
  54         public static ServerAnswer error(String message) {
  55                 return new ServerAnswer(ERROR, message);
  56         }
  57
  58         public static ServerAnswer error(Throwable e) {
  59                 StringWriter writer = new StringWriter();
  60                 try {
  61                         e.printStackTrace(new PrintWriter(writer));
  62                         return new ServerAnswer(ERROR, writer.toString());
  63                 } finally {
  64                         IOUtils.closeQuietly(writer);
  65                 }
  66         }
  67
  68         public static ServerAnswer ok(String message) {
  69                 return new ServerAnswer(OK, message);
  70         }
  71
  72         @Override
  73         public String toString() {
  74                 return "ServerAnswer{status:"+status+", message:"+message+"}";
  75         }
  76
  77 }