TupleSchema* AbstractPlanNode::generateDMLCountTupleSchema()
{
// Assuming the expected output schema here saves the expense of hard-coding it into each DML plan.
vector<voltdb::ValueType> columnTypes(1, VALUE_TYPE_BIGINT);
vector<int32_t> columnSizes(1, sizeof(int64_t));
vector<bool> columnAllowNull(1, false);
vector<bool> columnInBytes(1, false);
TupleSchema* schema = TupleSchema::createTupleSchema(columnTypes, columnSizes,
columnAllowNull, columnInBytes);
return schema;
}
TupleSchema* TupleSchema::createTrackerTupleSchema() {
std::vector<ValueType> columnTypes(2);
std::vector<int32_t> columnSizes(2);
std::vector<bool> allowNull(2);
// COLUMN 0: TABLE_NAME
columnTypes[0] = VALUE_TYPE_VARCHAR;
columnSizes[0] = static_cast<int32_t>(32);
allowNull[0] = false;
// COLUMN 1: TUPLE_ID
columnTypes[1] = VALUE_TYPE_INTEGER;
columnSizes[1] = static_cast<int32_t>(NValue::getTupleStorageSize(VALUE_TYPE_INTEGER));
allowNull[1] = false;
TupleSchema *schema = TupleSchema::createTupleSchema(columnTypes, columnSizes, allowNull, false);
return (schema);
}
TupleSchema* TupleSchema::createEvictedTupleSchema() {
std::vector<ValueType> columnTypes(2);
std::vector<int32_t> columnSizes(2);
std::vector<bool> allowNull(2);
// create a schema containing a single column for the block_id
columnTypes[0] = VALUE_TYPE_SMALLINT;
columnSizes[0] = static_cast<int32_t>(NValue::getTupleStorageSize(VALUE_TYPE_SMALLINT));
allowNull[0] = false;
columnTypes[1] = VALUE_TYPE_INTEGER;
columnSizes[1] = static_cast<int32_t>(NValue::getTupleStorageSize(VALUE_TYPE_INTEGER));
allowNull[1] = false;
TupleSchema *blockids_schema = TupleSchema::createTupleSchema(columnTypes, columnSizes, allowNull, false);
//TupleSchema *evicted_schema = TupleSchema::createTupleSchema(pkey_schema, blockids_schema);
// Always make sure that we return memory!
//TupleSchema::freeTupleSchema(blockids_schema);
return (blockids_schema);
}
