runtime/org.argeo.slc.support.simple/src/main/java/org/argeo/slc/msg/ExecutionAnswer.java

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