public NormalizeOrderByVisitor(BestCaseDictionary <IEnumerable <string> > tableColumns
, bool ignoreCase = true)
: base(tableColumns, ignoreCase)
{
_orderByInMainQuery = new Stack <OrderingTerm>();
_candidateReplaceColumns = new List <Tuple <OrderingTerm, Column> >();
}
public GetCNFVisitor(BestCaseDictionary <IEnumerable <string> > tableColumns
, bool ignoreCase = true)
: base(tableColumns, ignoreCase)
{
//_cnfSet = new TwoKeysDictionary<Table, string, string>();
_cnfSet = new CNFSet();
}
public GetResultInfoListVisitor(BestCaseDictionary <IEnumerable <string> > tableColumns
, bool ignoreCase = true)
{
_tableColumns = tableColumns;
_stack = new Stack <ResultInfoList>();
_subQueryStack = new Stack <SubQueryType>();
_ignoreCase = ignoreCase;
}
public void WrapInSelectStar(Dictionary <string, IEnumerable <string> > tableColumns, string AliasName = "V0_")
{
var stmt = this.GetStmt();
if (stmt.Type == StmtType.Select)
{
var selectStmt = (SelectStmt)stmt;
var bestcaseTableColumns = new BestCaseDictionary <IEnumerable <string> >(tableColumns);
var visitor = new NormalizeOrderByVisitor(bestcaseTableColumns);
selectStmt.Accept(visitor);
var singleQueryClause =
SingleQuery.WrapInSelectStar(new AliasedQuery((IQueryClause)selectStmt.Query, false, AliasName));
// Limit句にはColumnを指定できないので変換処理は必要ない
selectStmt.Query =
new SingleQuery(singleQueryClause, selectStmt.Query.OrderBy, selectStmt.Query.Limit);
}
}
GetCNF(Dictionary <string, IEnumerable <string> > tableColumns)
{
var ret = new Dictionary <SqlTable, Dictionary <string, string> >();
var stmt = this.GetStmt();
var bestcaseTableColumns = new BestCaseDictionary <IEnumerable <string> >(tableColumns);
var visitor = new GetCNFVisitor(bestcaseTableColumns);
stmt.Accept(visitor);
foreach (var equalities in visitor.CNF)
{
var table = new SqlTable(equalities.Key);
ret.Add(table, new Dictionary <string, string>());
foreach (var equalitie in equalities.Value)
{
var columnName = equalitie.Key;
var literalValue = equalitie.Value.Value;
ret[table].Add(columnName, literalValue);
}
}
return(ret);
}
