Examples of com.samskivert.io.PersistenceException

com.samskivert.io.PersistenceException
A persistence exception can be thrown when an error occurs in underlying persistence code. By encapsulating errors, one retains the ability to make changes to the implementation structure without affecting the interface to persistence services presented to the application.

    {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try {
            update.persistTo(new ObjectOutputStream(out));
        } catch (IOException ioe) {
            throw new PersistenceException("Error serializing update " + update, ioe);
        }
        return out.toByteArray();
    }

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        try {
            Class<?> updateClass = getUpdateClass(updateType);
            if (updateClass == null) {
                errmsg = "No class registered for update type [sceneId=" + sceneId +
                    ", sceneVersion=" + sceneVersion + ", updateType=" + updateType + "].";
                throw new PersistenceException(errmsg);
            }


            // create the update
            SceneUpdate update = (SceneUpdate)updateClass.newInstance();
            update.init(sceneId, sceneVersion);


            // decode its contents from the serialized data
            ByteArrayInputStream bin = new ByteArrayInputStream(data);
            update.unpersistFrom(new ObjectInputStream(bin));
            return update;


        } catch (IOException ioe) {
            error = ioe;
            errmsg = "Unable to decode update";


        } catch (ClassNotFoundException cnfe) {
            error = cnfe;
            errmsg = "Unable to instantiate update";


        } catch (InstantiationException ie) {
            error = ie;
            errmsg = "Unable to instantiate update";
        } catch (IllegalAccessException iae) {
            error = iae;
            errmsg = "Unable to instantiate update";
        }


        errmsg += " [sceneId=" + sceneId + ", sceneVersion=" + sceneVersion +
            ", updateType=" + updateType + "].";
        throw new PersistenceException(errmsg, error);
    }

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                conn = _writeSource.getConnection();
            }
            return conn;


        } catch (SQLException sqe) {
            throw new PersistenceException(sqe);
        }
    }

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                    PreparedStatement stmt = null;
                    try {
                        stmt = conn.prepareStatement("insert into sites (siteString) VALUES (?)");
                        stmt.setString(1, site.siteString);
                        if (1 != stmt.executeUpdate()) {
                            throw new PersistenceException("Not inserted " + site);
                        }
                        site.siteId = liaison.lastInsertedId(conn, stmt, "sites", "siteId");


                    } finally {
                        JDBCUtil.close(stmt);

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    {
        int modified = stmt.executeUpdate();
        if (modified != expectedCount) {
            String err = "Statement did not modify expected number of rows [stmt=" + stmt +
                ", expected=" + expectedCount + ", modified=" + modified + "]";
            throw new PersistenceException(err);
        }
    }

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    {
        int modified = stmt.executeUpdate(query);
        if (modified != expectedCount) {
            String err = "Statement did not modify expected number of rows [stmt=" + stmt +
                ", expected=" + expectedCount + ", modified=" + modified + "]";
            throw new PersistenceException(err);
        }
    }

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                        conmap.connection.setAutoCommit(Boolean.valueOf(autoCommit));
                    } catch (SQLException sqe) {
                        closeConnection(ident, conmap.connection);
                        err = "Failed to configure auto-commit [key=" + key +
                            ", ident=" + ident + ", autoCommit=" + autoCommit + "].";
                        throw new PersistenceException(err, sqe);
                    }
                }


                // make the connection read-only to let the JDBC driver know that it can and should
                // use the read-only mirror(s)
                if (readOnly) {
                    try {
                        conmap.connection.setReadOnly(true);
                    } catch (SQLException sqe) {
                        closeConnection(ident, conmap.connection);
                        err = "Failed to make connection read-only [key=" + key +
                            ", ident=" + ident + "].";
                        throw new PersistenceException(err, sqe);
                    }
                }
                _keys.put(key, conmap);


            } else {

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        Driver jdriver;
        try {
            jdriver = (Driver)Class.forName(driver).newInstance();
        } catch (Exception e) {
            String err = "Error loading driver [class=" + driver + "].";
            throw new PersistenceException(err, e);
        }


        // create the connection
        try {
            Properties props = new Properties();
            props.put("user", username);
            props.put("password", passwd);
            return jdriver.connect(url, props);


        } catch (SQLException sqe) {
            String err = "Error creating database connection [driver=" + driver + ", url=" + url +
                ", username=" + username + "].";
            throw new PersistenceException(err, sqe);
        }
    }

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        throws PersistenceException
    {
        String value = props.getProperty(name);
        if (StringUtil.isBlank(value)) {
            errmsg = "Unable to get connection. " + errmsg; // augment the error message
            throw new PersistenceException(errmsg);
        }
        return value;
    }

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                }


                if (!retryOnTransientFailure || liaison == null ||
                    !liaison.isTransientException(sqe)) {
                    String err = "Operation invocation failed";
                    throw new PersistenceException(err, sqe);
                }


                // the MySQL JDBC driver has the annoying habit of including the embedded exception
                // stack trace in the message of their outer exception; if I want a fucking stack
                // trace, I'll call printStackTrace() thanksverymuch

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com.samskivert.servlet.JDBCTableSiteIdentifier$SiteIdentifierRepository

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