Examples of org.apache.derby.iapi.sql.dictionary.DataDictionary.startWriting()

Package org.apache.derby.iapi.sql.dictionary

Class org.apache.derby.iapi.sql.dictionary.DataDictionary

Examples of org.apache.derby.iapi.sql.dictionary.DataDictionary.startWriting()

org.apache.derby.iapi.sql.dictionary.DataDictionary.startWriting()
Inform this DataDictionary that we are about to start writing to it. This means using the various add and drop methods in the DataDictionary. Generally, this is done during execution of DDL. @param lcc The LanguageConnectionContext to use. @exception StandardException Thrown on error

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


        final String grantor = lcc.getCurrentUserId(activation);


        dd.startWriting(lcc);


        for (Iterator rIter = roleNames.iterator(); rIter.hasNext();) {
            String role = (String)rIter.next();


            if (role.equals(Authorizer.PUBLIC_AUTHORIZATION_ID)) {

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    ** it seemed safer to do this whole operation in "write" mode.
    **
    ** We tell the data dictionary we're done writing at the end of
    ** the transaction.
    */
    dd.startWriting(lcc);


    // need to lock heap in exclusive mode first.  Because we can't first
    // shared lock the row in SYSCONGLOMERATES and later exclusively lock
    // it, this is potential deadlock (track 879).  Also td need to be
    // gotten after we get the lock, a concurrent thread could be modifying

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    ** it seemed safer to do this whole operation in "write" mode.
    **
    ** We tell the data dictionary we're done writing at the end of
    ** the transaction.
    */
    dd.startWriting(lcc);


    TableDescriptor td = dd.getTableDescriptor(tableId);
    if (td == null)
    {
      throw StandardException.newException(

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    DataDescriptorGenerator ddg = dd.getDataDescriptorGenerator();


    RoutinePermsDescriptor routinePermsDesc = ddg.newRoutinePermsDescriptor( aliasDescriptor, currentUser);


    dd.startWriting(lcc);
    for( Iterator itr = grantees.iterator(); itr.hasNext();)
    {
      // Keep track to see if any privileges are revoked by a revoke 
      // statement. If a privilege is not revoked, we need to raise a
      // warning.

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    ** it seemed safer to do this whole operation in "write" mode.
    **
    ** We tell the data dictionary we're done writing at the end of
    ** the transaction.
    */
    dd.startWriting(lcc);


    /* Get the alias descriptor.  We're responsible for raising
     * the error if it isn't found 
     */
    AliasDescriptor ad = dd.getAliasDescriptor(sd.getUUID().toString(), aliasName, nameSpace);

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    ** Indicate that we are about to modify the data dictionary.
    ** 
    ** We tell the data dictionary we're done writing at the end of
    ** the transaction.
    */
    dd.startWriting(lcc);


    SchemaDescriptor triggerSd = getSchemaDescriptorForCreate(dd, activation, triggerSchemaName);


    if (spsCompSchemaId == null) {
      SchemaDescriptor def = lcc.getDefaultSchema();

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                            stats[si].getColumnCount() + ")";
                    logAlways(td, null, msg);
                    trace(1, msg + " on table " + stats[si].getTableUUID());
                    DataDictionary dd = lcc.getDataDictionary();
                    if (!lcc.dataDictionaryInWriteMode()) {
                        dd.startWriting(lcc);
                    }
                    dd.dropStatisticsDescriptors(
                            td.getUUID(), stats[si].getReferenceID(), tc); 
                    if (asBackgroundTask) {
                        lcc.internalCommit(true);

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        // Update the heap row count estimate.
        setHeapRowEstimate(tc, td.getHeapConglomerateId(), numRows);
        // Drop existing index statistics for this index.
        if (!lcc.dataDictionaryInWriteMode()) {
            dd.startWriting(lcc);
        }
        dd.dropStatisticsDescriptors(table, index, tc);


        boolean conglomerateGone = false; // invalidation control flag
        // Don't write statistics if the table is empty.

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        DependencyManager dm = dd.getDependencyManager();
        int retries = 0;
        while (true) {
            try {
                if (!lcc.dataDictionaryInWriteMode()) {
                    dd.startWriting(lcc);
                }
                dm.invalidateFor(
                        td, DependencyManager.UPDATE_STATISTICS, lcc);
                trace(1, "invalidation completed");
                break;

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        ** it seemed safer to do this whole operation in "write" mode.
        **
        ** We tell the data dictionary we're done writing at the end of
        ** the transaction.
        */
        dd.startWriting(lcc);
        dd.clearSequenceCaches();


        SequenceDescriptor sequenceDescriptor = dd.getSequenceDescriptor(schemaDescriptor, sequenceName);


        if (sequenceDescriptor == null) {

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