void CmpSeabaseDDL::dropSeabaseRoutine(StmtDDLDropRoutine * dropRoutineNode,
NAString &currCatName,
NAString &currSchName)
{
Lng32 retcode = 0;
ComObjectName routineName(dropRoutineNode->getRoutineName());
ComAnsiNamePart currCatAnsiName(currCatName);
ComAnsiNamePart currSchAnsiName(currSchName);
routineName.applyDefaults(currCatAnsiName, currSchAnsiName);
const NAString catalogNamePart =
routineName.getCatalogNamePartAsAnsiString();
const NAString schemaNamePart =
routineName.getSchemaNamePartAsAnsiString(TRUE);
const NAString objectNamePart =
routineName.getObjectNamePartAsAnsiString(TRUE);
const NAString extRoutineName = routineName.getExternalName(TRUE);
ExpHbaseInterface * ehi = NULL;
ExeCliInterface cliInterface(STMTHEAP, NULL, NULL,
CmpCommon::context()->sqlSession()->getParentQid());
ehi = allocEHI();
if (ehi == NULL)
{
processReturn();
return;
}
retcode = existsInSeabaseMDTable(&cliInterface,
catalogNamePart, schemaNamePart,
objectNamePart, COM_USER_DEFINED_ROUTINE_OBJECT,
TRUE, FALSE);
if (retcode < 0)
{
deallocEHI(ehi);
processReturn();
return;
}
if (retcode == 0) // does not exist
{
*CmpCommon::diags() << DgSqlCode(-1389)
<< DgString0(extRoutineName);
deallocEHI(ehi);
processReturn();
return;
}
// get objectOwner
Int64 objUID = 0;
Int32 objectOwnerID = 0;
Int32 schemaOwnerID = 0;
Int64 objectFlags = 0;
// see if routine is cached
BindWA bindWA(ActiveSchemaDB(), CmpCommon::context(), FALSE/*inDDL*/);
NARoutineDB *pRoutineDBCache = ActiveSchemaDB()->getNARoutineDB();
QualifiedName qualRoutineName(routineName, STMTHEAP);
NARoutineDBKey key(qualRoutineName, STMTHEAP);
NARoutine *cachedNARoutine = pRoutineDBCache->get(&bindWA, &key);
if (cachedNARoutine)
{
objUID = cachedNARoutine->getRoutineID();
objectOwnerID = cachedNARoutine->getObjectOwner();
schemaOwnerID = cachedNARoutine->getSchemaOwner();
}
else
{
objUID = getObjectInfo(&cliInterface,
catalogNamePart.data(), schemaNamePart.data(),
objectNamePart.data(), COM_USER_DEFINED_ROUTINE_OBJECT,
objectOwnerID,schemaOwnerID,objectFlags);
if (objUID < 0 || objectOwnerID == 0 || schemaOwnerID == 0)
{
deallocEHI(ehi);
processReturn();
return;
}
}
// Verify user has privilege to drop routine
if (!isDDLOperationAuthorized(SQLOperation::DROP_ROUTINE,objectOwnerID,schemaOwnerID))
{
*CmpCommon::diags() << DgSqlCode(-CAT_NOT_AUTHORIZED);
deallocEHI(ehi);
processReturn ();
return;
}
// Determine if this function is referenced by any other objects.
Lng32 cliRC = 0;
Queue * usingViewsQueue = NULL;
if (dropRoutineNode->getDropBehavior() == COM_RESTRICT_DROP_BEHAVIOR)
{
NAString usingObjName;
cliRC = getUsingObject(&cliInterface, objUID, usingObjName);
if (cliRC < 0)
{
deallocEHI(ehi);
processReturn();
return;
}
if (cliRC != 100) // found an object
{
*CmpCommon::diags() << DgSqlCode(-CAT_DEPENDENT_VIEW_EXISTS)
<< DgTableName(usingObjName);
deallocEHI(ehi);
processReturn();
return;
}
}
else
if (dropRoutineNode->getDropBehavior() == COM_CASCADE_DROP_BEHAVIOR)
{
cliRC = getUsingViews(&cliInterface, objUID, usingViewsQueue);
if (cliRC < 0)
{
deallocEHI(ehi);
processReturn();
return;
}
}
if (usingViewsQueue)
{
usingViewsQueue->position();
for (int idx = 0; idx < usingViewsQueue->numEntries(); idx++)
{
OutputInfo * vi = (OutputInfo*)usingViewsQueue->getNext();
char * viewName = vi->get(0);
if (dropOneTableorView(cliInterface,viewName,COM_VIEW_OBJECT,false))
{
deallocEHI(ehi);
processReturn();
return;
}
}
}
// Removed routine from metadata
if (dropSeabaseObject(ehi, dropRoutineNode->getRoutineName(),
currCatName, currSchName, COM_USER_DEFINED_ROUTINE_OBJECT,
TRUE, FALSE))
{
deallocEHI(ehi);
processReturn();
return;
}
// Remove cached entries in other processes
pRoutineDBCache->removeNARoutine(qualRoutineName,
NARoutineDB::REMOVE_FROM_ALL_USERS,
objUID);
deallocEHI(ehi);
processReturn();
return;
}
void CmpSeabaseDDL::dropSeabaseView(
StmtDDLDropView * dropViewNode,
NAString &currCatName, NAString &currSchName)
{
Lng32 cliRC = 0;
Lng32 retcode = 0;
const NAString &tabName = dropViewNode->getViewName();
ComObjectName viewName(tabName);
ComAnsiNamePart currCatAnsiName(currCatName);
ComAnsiNamePart currSchAnsiName(currSchName);
viewName.applyDefaults(currCatAnsiName, currSchAnsiName);
const NAString catalogNamePart = viewName.getCatalogNamePartAsAnsiString();
const NAString schemaNamePart = viewName.getSchemaNamePartAsAnsiString(TRUE);
const NAString objectNamePart = viewName.getObjectNamePartAsAnsiString(TRUE);
const NAString extViewName = viewName.getExternalName(TRUE);
ExeCliInterface cliInterface(STMTHEAP, NULL, NULL,
CmpCommon::context()->sqlSession()->getParentQid());
ExpHbaseInterface * ehi = allocEHI();
if (ehi == NULL)
return;
if ((isSeabaseReservedSchema(viewName)) &&
(!Get_SqlParser_Flags(INTERNAL_QUERY_FROM_EXEUTIL)))
{
*CmpCommon::diags() << DgSqlCode(-1119)
<< DgTableName(extViewName);
deallocEHI(ehi);
processReturn();
return;
}
retcode = existsInSeabaseMDTable(&cliInterface,
catalogNamePart, schemaNamePart, objectNamePart,
COM_VIEW_OBJECT, TRUE, FALSE);
if (retcode < 0)
{
deallocEHI(ehi);
processReturn();
return;
}
if (retcode == 0) // does not exist
{
*CmpCommon::diags() << DgSqlCode(-1389)
<< DgString0(extViewName);
deallocEHI(ehi);
processReturn();
return;
}
Int32 objectOwnerID = 0;
Int32 schemaOwnerID = 0;
Int64 objUID = getObjectUIDandOwners(&cliInterface,
catalogNamePart.data(), schemaNamePart.data(),
objectNamePart.data(),
COM_VIEW_OBJECT,
objectOwnerID,schemaOwnerID);
if (objUID < 0 || objectOwnerID == 0)
{
if (CmpCommon::diags()->getNumber(DgSqlCode::ERROR_) == 0)
SEABASEDDL_INTERNAL_ERROR("getting object UID and owner for drop view");
deallocEHI(ehi);
processReturn();
return;
}
// Verify user can perform operation
if (!isDDLOperationAuthorized(SQLOperation::DROP_VIEW,objectOwnerID,schemaOwnerID))
{
*CmpCommon::diags() << DgSqlCode(-CAT_NOT_AUTHORIZED);
deallocEHI(ehi);
processReturn ();
return;
}
Queue * usingViewsQueue = NULL;
if (dropViewNode->getDropBehavior() == COM_RESTRICT_DROP_BEHAVIOR)
{
NAString usingObjName;
cliRC = getUsingObject(&cliInterface, objUID, usingObjName);
if (cliRC < 0)
{
deallocEHI(ehi);
processReturn();
return;
}
if (cliRC != 100) // found an object
{
*CmpCommon::diags() << DgSqlCode(-1047)
<< DgTableName(usingObjName);
deallocEHI(ehi);
processReturn();
return;
}
}
else if (dropViewNode->getDropBehavior() == COM_CASCADE_DROP_BEHAVIOR)
{
cliRC = getUsingViews(&cliInterface, objUID, usingViewsQueue);
if (cliRC < 0)
{
deallocEHI(ehi);
processReturn();
return;
}
}
// get the list of all tables referenced by the view. Save this list so
// referenced tables can be removed from cache later
NAList<objectRefdByMe> tablesRefdList;
short status = getListOfReferencedTables(&cliInterface, objUID, tablesRefdList);
if (usingViewsQueue)
{
usingViewsQueue->position();
for (int idx = 0; idx < usingViewsQueue->numEntries(); idx++)
{
OutputInfo * vi = (OutputInfo*)usingViewsQueue->getNext();
char * viewName = vi->get(0);
if (dropSeabaseObject(ehi, viewName,
currCatName, currSchName, COM_VIEW_OBJECT))
{
deallocEHI(ehi);
processReturn();
return;
}
}
}
if (dropSeabaseObject(ehi, tabName,
currCatName, currSchName, COM_VIEW_OBJECT))
{
deallocEHI(ehi);
processReturn();
return;
}
// clear view definition from my cache only.
CorrName cn(objectNamePart, STMTHEAP, schemaNamePart, catalogNamePart);
ActiveSchemaDB()->getNATableDB()->removeNATable(cn,
NATableDB::REMOVE_MINE_ONLY, COM_VIEW_OBJECT);
// clear view from all other caches here. This compensates for a
// scenario where the object UID is not available in removeNATable,
// and the look up failed too. Solution is just to use the objectUID
// here.
SQL_QIKEY qiKey;
qiKey.operation[0] = 'O';
qiKey.operation[1] = 'R';
qiKey.ddlObjectUID = objUID;
SQL_EXEC_SetSecInvalidKeys(1, &qiKey);
// Now remove referenced tables from cache.
// When a query that references a view is compiled, all views are converted
// to the underlying base tables. Query plans are generated to access the
// tables, and the views are no longer relevant.
// When dropping a view, query plans that reference the dropped view will
// continue to work if the plans are cached. This code removes the
// referenced tables from caches to force recompilations so dropped views
// are noticed.
for (CollIndex i = 0; i < tablesRefdList.entries(); i++)
{
CorrName cn(tablesRefdList[i].objectName,
STMTHEAP,
tablesRefdList[i].schemaName,
tablesRefdList[i].catalogName);
ActiveSchemaDB()->getNATableDB()->removeNATable(cn,
NATableDB::REMOVE_FROM_ALL_USERS, COM_BASE_TABLE_OBJECT);
}
deallocEHI(ehi);
processReturn();
return;
}
