private string CreateSqlSentence(object treeitem, SqlKind sqlKind, int limitCount = 0)
{
string[] colums;
var col = treeitem as ColumViewMoodel;
var table = GetTreeViewTableName(CurrentDatabase, treeitem);
if (col == null)
{
colums = table.Colums.Select(x => x.ColumName).ToArray();
}
else
{
colums = new[] { col.ColumName };
}
if (sqlKind == SqlKind.Select)
{
return(CreateSelectStatement(table.TableName, colums, limitCount));
}
else if (sqlKind == SqlKind.Insert)
{
return(CreateInsertStatement(table.TableName, colums));
}
else if (sqlKind == SqlKind.Update)
{
return(CreateUpdateStatement(table.TableName, colums));
}
else
{
return("");
}
}
public SqlToken(SqlKind kind, int start, int end, SqlNode parent)
{
this.Parent = parent;
this.Kind = kind;
this.Start = start;
this.End = end;
}
private static bool TryMatch(ImmutableArray <RawToken> tokens, int position, SqlKind kind, out RawToken token)
{
if (tokens.TryElementAt(position, out token) &&
token.Kind == kind)
{
return(true);
}
token = default;
return(false);
}
internal static bool TryParse(string sql, int position, string expected, SqlKind kind, out RawToken token)
{
if (TryMatch(sql, position, expected))
{
token = new RawToken(kind, position, position + expected.Length);
return(true);
}
token = default;
return(false);
}
public SqlStatement(SqlKind kind, SqlFragment sql, SqlPlaceHolderList placeHolders, DbExecutionType executionType,
SqlPrecedenceHandler precedenceHandler = null, QueryOptions options = QueryOptions.None)
{
Kind = kind;
ExecutionType = executionType;
Options = options;
Append(sql, placeHolders, precedenceHandler);
if (placeHolders == null)
{
DiscoverPlaceholders();
}
}
internal static bool TryParse(string sql, int position, char expected, SqlKind kind, out RawToken token)
{
if (sql.TryElementAt(position, out var c) &&
c == expected)
{
token = RawToken.SingleChar(kind, position);
return(true);
}
token = default;
return(false);
}
internal bool PeekKind(SqlKind kind)
{
SqlKind?k = Peek.FirstOrDefault()?.Kind;
return(kind == k);
}
public bool IsKind(SqlKind kind)
{
return(Current?.Kind == kind);
}
private SqlStatement CreateNonQueryStatement(SqlFragment sql, SqlKind kind)
{
// Placeholders = null means that placeholders should be rediscovered
return(new SqlStatement(kind, sql, null, DbExecutionType.NonQuery, this.SqlDialect.PrecedenceHandler, QueryOptions.NoQueryCache));
}
public RawToken(SqlKind kind, int start, int end)
{
this.Kind = kind;
this.Start = start;
this.End = end;
}
public RawToken WithKind(SqlKind kind) => new RawToken(kind, this.Start, this.End);
public static RawToken SingleChar(SqlKind type, int position) => new RawToken(type, position, position + 1);
//, bool StartOrCondition = false, bool EndOrCondition = false
public static string GetSql(out SqlParameter prm, object obj, string Col, SqlKind kind, bool AddAndAfter = true, object forbetween = null, bool AfterOr = false, string ManualAdd = null)
{
string Sql = "";
string Aftersql = " ";
if (AfterOr)
{
Aftersql = " OR ";
}
if (ManualAdd != null)
{
Aftersql = ManualAdd;
}
string Column = Col;
string PrmName = "";
if (obj.ToString() == "")
{
prm = null;
return("");
}
/*switch (obj.GetType().Name)
* {
* case "String":
* //ForType = "'";
* break;
* case "DateTime":
* ForType = "#";
* break;
* }*/
prm = null;
PrmName = "P" + TempId;
if (AddAndAfter)
{
Aftersql = " AND ";
}
switch (kind)
{
case SqlKind.EQUAL:
prm = new SqlParameter("@" + PrmName, obj.ToString());
Sql = Col + "=@" + PrmName + Aftersql;
break;
case SqlKind.LIKE:
prm = new SqlParameter("@" + PrmName, "%" + obj.ToString() + "%");
Sql = Col + " LIKE @" + PrmName + Aftersql;
break;
case SqlKind.BEQUAL:
prm = new SqlParameter("@" + PrmName, obj.ToString() + "*");
Sql = Col + "=@" + PrmName + Aftersql;
break;
case SqlKind.AEQUAL:
prm = new SqlParameter("@" + PrmName, "*" + obj.ToString());
Sql = Col + "=@" + PrmName + Aftersql;
break;
case SqlKind.ABEQUAL:
prm = new SqlParameter("@" + PrmName, "*" + obj.ToString() + "*");
Sql = Col + "=@" + PrmName + Aftersql;
break;
case SqlKind.BETWEEN:
prm = new SqlParameter("@" + PrmName, obj.ToString());
Sql = Col + " BETWEEN @" + PrmName + " AND " + forbetween.ToString() + Aftersql;
break;
}
//if (StartOrCondition) Sql = " ( " + Sql;
//if (EndOrCondition)
//{
// Sql = Sql.Substring(Sql.IndexOf(Aftersql));
// Sql += " ) " + Aftersql;
//}
TempId++;
return(Sql);
}
private string CreateSqlSentence(object treeitem, SqlKind sqlKind, int limitCount = 0)
{
string[] colums;
var col = treeitem as ColumViewMoodel;
var table = GetTreeViewTableName(CurrentDatabase, treeitem);
if (col == null)
{
colums = table.Colums.Select(x => x.ColumName).ToArray();
}
else
{
colums = new[] { col.ColumName };
}
if (sqlKind == SqlKind.Select)
{
return CreateSelectStatement(table.TableName, colums, limitCount);
}
else if (sqlKind == SqlKind.Insert)
{
return CreateInsertStatement(table.TableName, colums);
}
else if (sqlKind == SqlKind.Update)
{
return CreateUpdateStatement(table.TableName, colums);
}
else
{
return "";
}
}
