Examples of com.sleepycat.je.DatabaseException

com.sleepycat.je.DatabaseException
The root of all BDB JE-defined exceptions.
Exceptions thrown by BDB JE fall into three categories.
1. When a method is used incorrectly as the result of an application programming error, a standard Java runtime exception is thrown: {@link IllegalArgumentException}, {@link IllegalStateException} or {@link UnsupportedOperationException}. These exceptions have the standard meaning defined by their javadoc. Note that JE throws {@link IllegalArgumentException} rather than {@link NullPointerException} when arequired parameter is null.
2. When an operation failure occurs, {@link OperationFailureException} orone of its subclasses is thrown. See {@link OperationFailureException} fordetails.
3. When an {@code Environment} failure occurs, {@link EnvironmentFailureException} or one of its subclasses is thrown. See {@link EnvironmentFailureException} for details.
{@link OperationFailureException} and {@link EnvironmentFailureException}are the only two direct subclasses of {@code DatabaseException}.

(Actually the above statement is not strictly correct. {@link EnvironmentFailureException} extends {@link RunRecoveryException} whichextends {@code DatabaseException}. {@link RunRecoveryException} exists forbackward compatibility and has been deprecated. {@link EnvironmentFailureException} should be used instead.)
Note that in some cases, certain methods return status values without issuing an exception. This occurs in situations that are not normally considered an error, but when some informational status is returned. For example, {@link com.sleepycat.je.Database#get Database.get} returns {@link com.sleepycat.je.OperationStatus#NOTFOUND OperationStatus.NOTFOUND} when arequested key does not appear in the database.

             * Catch Throwable here (rather than exception) because in unit
             * test mode, we run assertions and they throw errors. We want to
             * clean up the file object in all cases.
             */
            closeFileInErrorCase(newFile);
            throw new DatabaseException
    ("Couldn't open file " + fileName + ": " + t, t);
        }
    }

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      throw new IOException("generated for testing");
        }
        writeToFile(file, data, DbLsn.getFileOffset(firstLsn));
    } catch (IOException IOE2) {
        fullBuffer.setRewriteAllowed();
        throw new DatabaseException(IOE2);
    }
      }


      assert EnvironmentImpl.maybeForceYield();
        }

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         !keyLine.equals("DATA=END")) {
      dataLine = reader.readLine();
      /* Add one for \n or \r. */
      bytesReadThisInterval += dataLine.length() + 1;
            if (dataLine == null) {
                throw new DatabaseException("No data to match key " +
                                            keyLine);
            }
      byte[] keyBytes = loadLine(keyLine.trim());
      byte[] dataBytes = loadLine(dataLine.trim());

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          int b = Character.digit(c1, 16);
          b <<= 4;
          b += Character.digit(c2, 16);
          ba[actualNBytes++] = (byte) b;
      } else {
          throw new DatabaseException("Corrupted file");
      }
        }
    } else {
        throw new DatabaseException("Corrupted file");
    }
      } else {
    ba[actualNBytes++] = (byte) (c & 0xff);
      }
  }

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        throws DatabaseException {


        try {
            endOfLog.force();
        } catch (IOException e) {
            throw new DatabaseException(e);
        }
    }

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        try {
            if (exclLock != null) {
                exclLock.release();
            }
        } catch (IOException IOE) {
            throw new DatabaseException(IOE);
        }
    }

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  throws DatabaseException {


  boolean envDirIsReadOnly = !dbEnvHome.canWrite();
  if (envDirIsReadOnly &&
      !readOnly) {
      throw new DatabaseException
    ("The Environment directory " +
                 dbEnvHome +
                 " is not writable, but the " +
     "Environment was opened for read-write access.");
  }

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                        try {
                            fileMap.remove(evictId);
                            iter.remove();
                            evictTarget.close();
                        } catch (IOException e) {
                            throw new DatabaseException (e);
                        } finally {
                            evictTarget.release();
                        }
                        break;
                    }

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            // Log a message
            Tracer.trace(Level.INFO, env, "hi there");
            expectedRecords.add(new Tracer("hi there"));


            // Log an exception
            DatabaseException e = new DatabaseException("fake exception");
            Tracer.trace(env, "DebugRecordTest", "testException", "foo", e);
            expectedRecords.add(new Tracer("foo\n" + Tracer.getStackTrace(e)));
                            
            // Log a split
            // Flush the log to disk

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            /* 
             * The user provided a transaction, the environment and the
             * database had better be opened transactionally.
             */
            if (!envIsTransactional) {
                throw new DatabaseException
        ("A Transaction cannot be used because the"+
         " environment was opened" +
         " non-transactionally");
            }
            if (!dbIsTransactional) {
                throw new DatabaseException
        ("A Transaction cannot be used because the" +
         " database was opened" +
         " non-transactionally");
            }

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