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Implement calpont_discover_existence

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This commit is contained in:
David Hall
2016-02-12 09:14:00 -06:00
parent 7a0f5e7198
commit 2f782d3fc8
5 changed files with 121 additions and 6 deletions
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84
dbcon/execplan/calpontsystemcatalog.cpp
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@ -368,6 +368,90 @@ CalpontSystemCatalog::CatalogMap CalpontSystemCatalog::fCatalogMap;
/*static*/
uint32_t CalpontSystemCatalog::fModuleID = numeric_limits<uint32_t>::max();
const CalpontSystemCatalog::OID CalpontSystemCatalog::lookupTableOID(const TableName& tablename)
{
TableName aTableName;
aTableName.schema = tablename.schema;
aTableName.table = tablename.table;
transform( aTableName.schema.begin(), aTableName.schema.end(), aTableName.schema.begin(), to_lower() );
transform( aTableName.table.begin(), aTableName.table.end(), aTableName.table.begin(), to_lower() );
if (aTableName.schema.compare(CALPONT_SCHEMA) != 0)
DEBUG << "Enter tableInfo: " << tablename.schema << "|" << tablename.table << endl;
// select objectid from systable where schema = tableName.schema and tablename = tableName.table;
CalpontSelectExecutionPlan csep;
CalpontSelectExecutionPlan::ReturnedColumnList returnedColumnList;
CalpontSelectExecutionPlan::FilterTokenList filterTokenList;
CalpontSelectExecutionPlan::ColumnMap colMap;
SimpleColumn *c1 = new SimpleColumn(CALPONT_SCHEMA+"."+SYSTABLE_TABLE+"."+OBJECTID_COL, fSessionID);
SimpleColumn *c2 = new SimpleColumn(CALPONT_SCHEMA+"."+SYSTABLE_TABLE+"."+SCHEMA_COL, fSessionID);
SimpleColumn *c3 = new SimpleColumn(CALPONT_SCHEMA+"."+SYSTABLE_TABLE+"."+TABLENAME_COL, fSessionID);
SRCP srcp;
srcp.reset(c1);
colMap.insert(CMVT_(CALPONT_SCHEMA+"."+SYSTABLE_TABLE+"."+OBJECTID_COL, srcp));
srcp.reset(c2);
colMap.insert(CMVT_(CALPONT_SCHEMA+"."+SYSTABLE_TABLE+"."+SCHEMA_COL, srcp));
srcp.reset(c3);
colMap.insert(CMVT_(CALPONT_SCHEMA+"."+SYSTABLE_TABLE+"."+TABLENAME_COL, srcp));
csep.columnMapNonStatic(colMap);
srcp.reset(c1->clone());
returnedColumnList.push_back(srcp);
csep.returnedCols(returnedColumnList);
OID oid = c1->oid();
// Filters
SimpleFilter *f1 = new SimpleFilter (opeq,
c2->clone(),
new ConstantColumn(aTableName.schema, ConstantColumn::LITERAL));
filterTokenList.push_back(f1);
filterTokenList.push_back(new Operator("and"));
SimpleFilter *f2 = new SimpleFilter (opeq,
c3->clone(),
new ConstantColumn(aTableName.table, ConstantColumn::LITERAL));
filterTokenList.push_back(f2);
csep.filterTokenList(filterTokenList);
ostringstream oss;
oss << "select objectid from systable where schema='" << aTableName.schema << "' and tablename='" <<
aTableName.table << "' --tableRID/";
csep.data(oss.str()); //@bug 6078. Log the statement
if (fIdentity == EC) oss << "EC";
else oss << "FE";
NJLSysDataList sysDataList;
try {
getSysData (csep, sysDataList, SYSTABLE_TABLE);
}
catch ( IDBExcept& ){
throw;
}
catch ( runtime_error& e ) {
throw runtime_error ( e.what() );
}
vector<ColumnResult*>::const_iterator it;
for (it = sysDataList.begin(); it != sysDataList.end(); it++)
{
if ((*it)->dataCount() == 0)
{
return (OID)0;
}
if ((*it)->ColumnOID() == oid)
{
if (fIdentity == EC)
return (*it)->GetRid(0);
else
return (OID)((*it)->GetData(0));
}
}
return (OID)0;
}
const CalpontSystemCatalog::OID CalpontSystemCatalog::lookupOID(const TableColName& tableColName)
{
if (tableColName.schema.length() == 0 || tableColName.table.length() == 0 || tableColName.column.length() == 0)