Examples of org.lealone.engine.Session

org.lealone.engine.Session
A session represents an embedded database connection. When using the server mode, this object resides on the server side and communicates with a SessionRemote object on the client side.

        }
        try {
            table.truncate(session);
            Database database = session.getDatabase();
            synchronized (database) {
                Session sysSession = database.getSystemSession();
                if (!database.isSysTableLocked()) {
                    // this session may not lock the sys table (except if it already has locked it)
                    // because it must be committed immediately
                    // otherwise other threads can not access the sys table.
                    // if the table is not removed now, it will be when the database
                    // is opened the next time
                    // (the table is truncated, so this is just one record)
                    synchronized (sysSession) {
                        index.removeChildrenAndResources(sysSession);
                        table.removeChildrenAndResources(sysSession);
                        // the transaction must be committed immediately
                        sysSession.commit(false);
                    }
                }
            }
        } finally {
            table = null;

View Full Code Here

            if (isSelect()) {
                Query query = parseSelectUnion();
                read(")");
                query.setParameterList(New.arrayList(parameters));
                query.init();
                Session s;
                if (createView != null) {
                    s = database.getSystemSession();
                } else {
                    s = session;
                }

View Full Code Here

    private synchronized void load() {
        if (triggerCallback != null) {
            return;
        }
        try {
            Session session = database.getSystemSession();
            Connection c2 = session.createConnection(false);
            Object obj = Utils.loadUserClass(triggerClassName).newInstance();
            triggerCallback = (Trigger) obj;
            triggerCallback.init(c2, getSchema().getName(), getName(), table.getName(), before, typeMask);
        } catch (Throwable e) {
            // try again later

View Full Code Here

     * Flush the current value, including the margin, to disk.
     *
     * @param session the session
     */
    public synchronized void flush(Session session) {
        Session sysSession = database.getSystemSession();
        if (session == null || !database.isSysTableLocked()) {
            // this session may not lock the sys table (except if it already has locked it)
            // because it must be committed immediately
            // otherwise other threads can not access the sys table.
            session = sysSession;
        }
        synchronized (session) {
            // just for this case, use the value with the margin for the script
            long realValue = value;
            try {
                value = valueWithMargin;
                database.update(session, this);
            } finally {
                value = realValue;
            }
            if (session == sysSession) {
                // if the system session is used,
                // the transaction must be committed immediately
                sysSession.commit(false);
            }
        }
    }

View Full Code Here

            if (params != null && params.size() > 0) {
                throw DbException.get(ErrorCode.FEATURE_NOT_SUPPORTED_1, "parameters in views");
            }
            querySQL = select.getPlanSQL();
        }
        Session sysSession = db.getSystemSession();
        try {
            if (view == null) {
                Schema schema = session.getDatabase().getSchema(session.getCurrentSchemaName());
                sysSession.setCurrentSchema(schema);
                view = new TableView(getSchema(), id, viewName, querySQL, null, columnNames, sysSession, false);
            } else {
                view.replace(querySQL, columnNames, sysSession, false, force);
            }
        } finally {
            sysSession.setCurrentSchema(db.getSchema(Constants.SCHEMA_MAIN));
        }
        if (comment != null) {
            view.setComment(comment);
        }
        if (old == null) {

View Full Code Here

            sequence.setIncrement(incrementValue);
        }
        // need to use the system session, so that the update
        // can be committed immediately - not committing it
        // would keep other transactions from using the sequence
        Session sysSession = db.getSystemSession();
        synchronized (sysSession) {
            db.update(sysSession, sequence);
            sysSession.commit(true);
        }
        return 0;
    }

View Full Code Here

            columns[j].setSelectivity(selectivity);
        }
        if (manual) {
            db.update(session, table);
        } else {
            Session s = db.getSystemSession();
            if (s != session) {
                // if the current session is the system session
                // (which is the case if we are within a trigger)
                // then we can't update the statistics because
                // that would unlock all locked objects
                db.update(s, table);
                s.commit(true);
            }
        }
    }

View Full Code Here

TOP

Related Classes of org.lealone.engine.Session

org.lealone.command.Command

org.lealone.command.ddl.AlterSequence

org.lealone.command.ddl.Analyze

org.lealone.command.ddl.CreateView

org.lealone.command.dml.Insert

org.lealone.command.Parser

org.lealone.dbobject.index.Index

org.lealone.dbobject.Sequence

org.lealone.dbobject.Setting

org.lealone.dbobject.table.Table

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.