Examples of org.apache.derby.iapi.sql.conn.LanguageConnectionContext

org.apache.derby.iapi.sql.conn.LanguageConnectionContext
LanguageConnectionContext keeps the result sets, and activations in use by the current connection.
More stable items, like other factories, are accessible through the LanguageConnectionFactory or the LanguageFactory. @see LanguageConnectionFactory @see org.apache.derby.iapi.sql.LanguageFactory

    {
      //Inplace compress let's the user call compress on VTI but it
      //is really a no-op. In order to avoid having to go throught
      //the ALTER TABLE code just for a no-op, we simply do the check
      //here and return if we are dealing with VTI.
    LanguageConnectionContext lcc       = ConnectionUtil.getCurrentLCC();
    TransactionController     tc        = lcc.getTransactionExecute();


    try 
        {
            DataDictionary data_dictionary = lcc.getDataDictionary();
            SchemaDescriptor sd = 
                data_dictionary.getSchemaDescriptor(schema, tc, true);
            TableDescriptor  td = 
                data_dictionary.getTableDescriptor(tablename, sd, tc);

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  public static void INSTALL_JAR(String url, String jar, int deploy)
    throws SQLException {


    try {
            
            LanguageConnectionContext lcc = ConnectionUtil.getCurrentLCC();


      String[] st = IdUtil.parseMultiPartSQLIdentifier(jar.trim());


      String schemaName;
      String sqlName;
            
            if (st.length == 1)
            {
        schemaName = lcc.getCurrentSchemaName();
        sqlName = st[0];
            }
            else
            {
                schemaName = st[0];

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  public static void REPLACE_JAR(String url, String jar)
    throws SQLException {


    try {
            
            LanguageConnectionContext lcc = ConnectionUtil.getCurrentLCC();


      String[] st = IdUtil.parseMultiPartSQLIdentifier(jar.trim());


            String schemaName;
            String sqlName;
            
            if (st.length == 1)
            {
                schemaName = lcc.getCurrentSchemaName();
                sqlName = st[0];
            }
            else
            {
                schemaName = st[0];

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  public static void REMOVE_JAR(String jar, int undeploy)
    throws SQLException {


    try {
            
            LanguageConnectionContext lcc = ConnectionUtil.getCurrentLCC();


      String[] st = IdUtil.parseMultiPartSQLIdentifier(jar.trim());


            String schemaName;
            String sqlName;
            
            if (st.length == 1)
            {
                schemaName = lcc.getCurrentSchemaName();
                sqlName = st[0];
            }
            else
            {
                schemaName = st[0];

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     * collected.
     */
    public static void SYSCS_EMPTY_STATEMENT_CACHE()
       throws SQLException
    {
       LanguageConnectionContext lcc = ConnectionUtil.getCurrentLCC();
       
       CacheManager statementCache =
           lcc.getLanguageConnectionFactory().getStatementCache();
       
       if (statementCache != null)
           statementCache.ageOut();
    }

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     * @throws SQLException
     */
    public static void SYSCS_SET_XPLAIN_SCHEMA(String schemaName)
                throws SQLException, StandardException
    {
        LanguageConnectionContext lcc       = ConnectionUtil.getCurrentLCC();
        TransactionController     tc        = lcc.getTransactionExecute();


        if (schemaName == null || schemaName.trim().length() == 0)
        {
            lcc.setXplainSchema(null);
            return;
        }


        boolean statsSave = lcc.getRunTimeStatisticsMode();
        lcc.setRunTimeStatisticsMode(false);
        createXplainSchema(schemaName);
        createXplainTable(lcc, schemaName,
                new XPLAINStatementDescriptor());
        createXplainTable(lcc, schemaName,
                new XPLAINStatementTimingsDescriptor());
        createXplainTable(lcc, schemaName,
                new XPLAINResultSetDescriptor());
        createXplainTable(lcc, schemaName,
                new XPLAINResultSetTimingsDescriptor());
        createXplainTable(lcc, schemaName,
                new XPLAINScanPropsDescriptor());
        createXplainTable(lcc, schemaName,
                new XPLAINSortPropsDescriptor());
        lcc.setRunTimeStatisticsMode(statsSave);
        lcc.setXplainSchema(schemaName);
    }

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     * Make a note that this thread saw an interrupt. Thread's intr
     * status flag is presumably off already, but we reset it here
     * also. Use lcc if available, else thread local variable.
     */
    public static void setInterrupted() {
        LanguageConnectionContext lcc = null;
        try {
            lcc = (LanguageConnectionContext)ContextService.getContextOrNull(
                LanguageConnectionContext.CONTEXT_ID);


        } catch (ShutdownException e) {
            // Ignore. Can happen when: a) background thread (RawStoreDaemon)
            // is performing checkpointing and b) a user thread starts shutdown
            // and interrupts the background thread. During recovery of the
            // container we get here. DERBY-4920.
        }




        Thread.interrupted();


        StandardException e =
            StandardException.newException(SQLState.CONN_INTERRUPT);


        if (lcc != null) {
            lcc.setInterruptedException(e);


        } else {
            exception.set(e);
        }
    }

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     * <p/>
     * If an interrupt status flag was seen, we set it back <em>on</em> here.
     */
    public static void restoreIntrFlagIfSeen() {


        LanguageConnectionContext lcc = null;
        try {
            lcc =
                (LanguageConnectionContext)ContextService.getContextOrNull(
                    LanguageConnectionContext.CONTEXT_ID);
        } catch (ShutdownException e) {
            // Ignore. DERBY-4911 Restoring interrupt flag is moot anyway if we
            // are closing down.
        }


        if (lcc == null) {
            // no lcc available for this thread, use thread local flag
            if (exception.get() != null) {


                exception.set(null);


                // Set thread's interrupt status flag back on before returning
                // control to user application
                Thread.currentThread().interrupt();
            }


        } else if (lcc.getInterruptedException() != null) {


            lcc.setInterruptedException(null);


            // Set thread's interrupt status flag back on before returning
            // control to user application
            Thread.currentThread().interrupt();
        }

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     * @param lcc the language connection context for this session
     */
    public static void restoreIntrFlagIfSeen(LanguageConnectionContext lcc) {


        if (SanityManager.DEBUG) {
            LanguageConnectionContext ctxLcc = null;
            try {
                ctxLcc = (LanguageConnectionContext)ContextService.
                    getContextOrNull(LanguageConnectionContext.CONTEXT_ID);


                SanityManager.ASSERT(

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            throws StandardException
  {
    TableDescriptor td;
    ConglomerateDescriptor cd;


    LanguageConnectionContext lcc = activation.getLanguageConnectionContext();
    DataDictionary dd = lcc.getDataDictionary();
    TransactionController tc = lcc.getTransactionExecute();


    /*
    ** Inform the data dictionary that we are about to write to it.
    ** There are several calls to data dictionary "get" methods here
    ** that might be done in "read" mode in the data dictionary, but

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