bundles/org.simantics.db.common/src/org/simantics/db/common/utils/Functions.java

   1 package org.simantics.db.common.utils;
   2
   3 import java.lang.reflect.InvocationTargetException;
   4
   5 import org.simantics.db.RequestProcessor;
   6 import org.simantics.db.Resource;
   7 import org.simantics.db.common.request.AdaptValue;
   8 import org.simantics.db.exception.DatabaseException;
   9 import org.simantics.scl.runtime.function.Function;
  10
  11 public class Functions {
  12
  13         private static DatabaseException findPossibleRootException(Throwable t) {
  14                 if(t == null) return null;
  15                 if(t instanceof DatabaseException) return (DatabaseException)t;
  16                 if(t instanceof RuntimeException || t instanceof InvocationTargetException) {
  17                         return findPossibleRootException(t.getCause());
  18                 }
  19                 return null;
  20         }
  21
  22         public static <T> T exec(RequestProcessor rp, Resource function, Object ... parameters) throws DatabaseException {
  23         Object op = rp.syncRequest(new AdaptValue(function));
  24         try {
  25                 return (T) ((Function)op).applyArray(parameters);
  26         } catch (RuntimeException e) {
  27                 DatabaseException dte = findPossibleRootException(e);
  28                 if(dte != null) throw dte;
  29                 else throw new DatabaseException(e);
  30         }
  31         }
  32
  33 }