コード例 #1
0
ファイル: tablefactory.cpp プロジェクト: simonzhangsm/voltdb
Table* TableFactory::getPersistentTable(
            voltdb::CatalogId databaseId,
            const std::string &name,
            TupleSchema* schema,
            const std::vector<std::string> &columnNames,
            char *signature,
            bool tableIsMaterialized,
            int partitionColumn,
            bool exportEnabled,
            bool exportOnly,
            int tableAllocationTargetSize,
            int tupleLimit,
            int32_t compactionThreshold,
            bool drEnabled)
{
    Table *table = NULL;
    StreamedTable *streamedTable = NULL;
    PersistentTable *persistentTable = NULL;

    if (exportOnly) {
        table = streamedTable = new StreamedTable(partitionColumn);
    }
    else {
        table = persistentTable = new PersistentTable(partitionColumn,
                                                      signature,
                                                      tableIsMaterialized,
                                                      tableAllocationTargetSize,
                                                      tupleLimit,
                                                      drEnabled);
    }

    initCommon(databaseId,
               table,
               name,
               schema,
               columnNames,
               true,  // table will take ownership of TupleSchema object
               compactionThreshold);

    TableStats *stats;
    if (exportOnly) {
        stats = streamedTable->getTableStats();
    }
    else {
        stats = persistentTable->getTableStats();
        // Allocate and assign the tuple storage block to the persistent table ahead of time instead
        // of doing so at time of first tuple insertion. The intent of block allocation ahead of time
        // is to avoid allocation cost at time of tuple insertion
        TBPtr block = persistentTable->allocateNextBlock();
        assert(block->hasFreeTuples());
        persistentTable->m_blocksWithSpace.insert(block);
    }

    // initialize stats for the table
    configureStats(name, stats);

    return table;
}
コード例 #2
0
ファイル: tablefactory.cpp プロジェクト: ingted/voltdb
Table* TableFactory::getPersistentTable(
            voltdb::CatalogId databaseId,
            const std::string &name,
            TupleSchema* schema,
            const std::vector<std::string> &columnNames,
            char *signature,
            bool tableIsMaterialized,
            int partitionColumn,
            bool exportEnabled,
            bool exportOnly,
            int tableAllocationTargetSize,
            int tupleLimit,
            int32_t compactionThreshold,
            bool drEnabled)
{
    Table *table = NULL;

    if (exportOnly) {
        table = new StreamedTable(exportEnabled);
    }
    else {
        table = new PersistentTable(partitionColumn, signature, tableIsMaterialized, tableAllocationTargetSize, tupleLimit, drEnabled);
    }

    initCommon(databaseId,
               table,
               name,
               schema,
               columnNames,
               true,  // table will take ownership of TupleSchema object
               compactionThreshold);

    // initialize stats for the table
    configureStats(databaseId, name, table);

    if(!exportOnly) {
        // allocate tuple storage block for the persistent table ahead of time
        // instead of waiting till first tuple insertion. Intend of allocating tuple
        // block storage ahead is to improve performance on first tuple insertion.
        PersistentTable *persistentTable = static_cast<PersistentTable*>(table);
        TBPtr block = persistentTable->allocateNextBlock();
        assert(block->hasFreeTuples());
        persistentTable->m_blocksWithSpace.insert(block);
    }
    return table;
}