public ExpressionClip Append(QueryOperator op, ExpressionClip right)
{
this.sql.Append(SqlQueryUtils.ToString(op));
this.sql.Append(SqlQueryUtils.ToString(right));
SqlQueryUtils.AddParameters(this.parameters, right);
return(this);
}
private static string Func(string funcName, string columnName)
{
StringBuilder sb = new StringBuilder(funcName);
sb.Append("(");
SqlQueryUtils.AppendColumnName(sb, columnName);
sb.Append(')');
return(sb.ToString());
}
protected void InitColumnExpression(string columnName, DbType type)
{
if (this.sql.Length > 0)
{
this.sql = new StringBuilder();
}
SqlQueryUtils.AppendColumnName(this.sql, columnName);
this.DbType = type;
}
public static string DatePart(string columnName, DatePartType partType)
{
StringBuilder sb = new StringBuilder("DATEPART(");
sb.Append(partType.ToString());
sb.Append(',');
SqlQueryUtils.AppendColumnName(sb, columnName);
sb.Append(')');
return(sb.ToString());
}
public static string SubString(string columnName, int start, int length)
{
StringBuilder sb = new StringBuilder("SUBSTRING(");
SqlQueryUtils.AppendColumnName(sb, columnName);
sb.Append(',');
sb.Append(start + 1);
sb.Append(',');
sb.Append(length);
sb.Append(')');
return(sb.ToString());
}
public DbCommand CreateCustomSqlCommand(string sql, string[] paramNames, DbType[] paramTypes, object[] paramValues)
{
DbCommand cmd = fac.CreateCommand();
cmd.CommandType = CommandType.Text;
AddInputParametersToCommand(paramNames, paramTypes, paramValues, cmd);
cmd.CommandText = SqlQueryUtils.ReplaceDatabaseTokens(sql, leftToken, rightToken, paramPrefixToken, wildcharToken, wildsinglecharToken);
PrepareCommand(cmd);
return(cmd);
}
public static string Count(string columnName, bool isDistinct)
{
StringBuilder sb = new StringBuilder();
sb.Append("COUNT(");
if (isDistinct)
{
sb.Append("DISTINCT ");
}
SqlQueryUtils.AppendColumnName(sb, columnName);
sb.Append(')');
return(sb.ToString());
}
public ExpressionClip Alias(string aliasName)
{
ExpressionClip expr = (ExpressionClip)this.Clone();
if (expr.parameters.Count > 0)
{
expr.Sql = "(" + expr.Sql + ")";
}
expr.sql.Append(' ');
SqlQueryUtils.AppendColumnName(expr.sql, aliasName);
return(expr);
}
public WhereClip Or(ExpressionClip left, QueryOperator op, ExpressionClip right)
{
if (this.sql.Length > 0)
{
this.sql.Append(" OR ");
}
this.sql.Append(SqlQueryUtils.ToString(left));
this.sql.Append(SqlQueryUtils.ToString(op));
this.sql.Append(SqlQueryUtils.ToString(right));
SqlQueryUtils.AddParameters(this.parameters, left);
SqlQueryUtils.AddParameters(this.parameters, right);
return(this);
}
public void SetGroupBy(string[] columns)
{
if (columns == null || columns.Length == 0)
{
groupBy = null;
return;
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < columns.Length; ++i)
{
SqlQueryUtils.AppendColumnName(sb, columns[i]);
sb.Append(',');
}
groupBy = sb.ToString().TrimEnd(',');
}
public ExpressionClip SubString(int start)
{
ExpressionClip expr = (ExpressionClip)this.Clone();
ExpressionClip cloneExpr = (ExpressionClip)this.Clone();
StringBuilder sb = new StringBuilder("SUBSTRING(");
SqlQueryUtils.AppendColumnName(sb, expr.Sql);
sb.Append(',');
sb.Append(start + 1);
sb.Append(",LEN(");
SqlQueryUtils.AppendColumnName(sb, cloneExpr.Sql);
sb.Append(')');
sb.Append(')');
expr.sql = sb;
SqlQueryUtils.AddParameters(expr.parameters, cloneExpr);
return(expr);
}
public ExpressionClip IndexOf(string subString)
{
ExpressionClip expr = (ExpressionClip)this.Clone();
StringBuilder sb = new StringBuilder();
sb.Append("CHARINDEX(@");
string paramName = MakeUniqueParamNameWithoutPrefixToken();
sb.Append(paramName);
sb.Append(',');
SqlQueryUtils.AppendColumnName(sb, expr.Sql);
sb.Append(')');
sb.Append("-1");
expr.sql = sb;
expr.dbType = DbType.Int32;
expr.parameters.Add('@' + paramName, new KeyValuePair <DbType, object>(this.dbType, subString));
return(expr);
}
public DbCommand CreateDeleteCommand(string tableName, WhereClip where)
{
DbCommand cmd = fac.CreateCommand();
cmd.CommandType = CommandType.Text;
StringBuilder sb = new StringBuilder("DELETE FROM ");
sb.Append(leftToken);
sb.Append(tableName.TrimStart(leftToken).TrimEnd(rightToken));
sb.Append(rightToken);
if ((!WhereClip.IsNullOrEmpty(where)) && where.Sql.Length > 0)
{
sb.Append(" WHERE ");
sb.Append(SqlQueryUtils.RemoveTableAliasNamePrefixes(where.Sql));
AddExpressionParameters(where, cmd);
}
cmd.CommandText = SqlQueryUtils.ReplaceDatabaseTokens(sb.ToString(), leftToken, rightToken, paramPrefixToken, wildcharToken, wildsinglecharToken);
PrepareCommand(cmd);
return(cmd);
}
public ExpressionClip Replace(string subString, string replaceString)
{
ExpressionClip expr = (ExpressionClip)this.Clone();
StringBuilder sb = new StringBuilder();
sb.Append("REPLACE(");
SqlQueryUtils.AppendColumnName(sb, expr.Sql);
sb.Append(",@");
string paramName = MakeUniqueParamNameWithoutPrefixToken();
sb.Append(paramName);
sb.Append(",@");
string paramName2 = MakeUniqueParamNameWithoutPrefixToken();
sb.Append(paramName2);
sb.Append(')');
expr.sql = sb;
expr.dbType = DbType.Int32;
expr.parameters.Add('@' + paramName, new KeyValuePair <DbType, object>(this.dbType, subString));
expr.Parameters.Add('@' + paramName2, new KeyValuePair <DbType, object>(this.dbType, replaceString));
return(expr);
}
public DbCommand CreateInsertCommand(string tableName, string[] columns, DbType[] types, object[] values)
{
DbCommand cmd = fac.CreateCommand();
cmd.CommandType = CommandType.Text;
StringBuilder sb = new StringBuilder("INSERT INTO ");
sb.Append(leftToken);
sb.Append(tableName.TrimStart(leftToken).TrimEnd(rightToken));
sb.Append(rightToken);
sb.Append(' ');
if (columns == null || columns.Length == 0)
{
sb.Append("DEFAULT VALUES");
}
else
{
sb.Append('(');
for (int i = 0; i < columns.Length; ++i)
{
if (columns[i].Trim()[0] == '[')
{
sb.Append(columns[i].Replace("[", leftToken.ToString()).Replace("]", rightToken.ToString()));
}
else
{
sb.Append(leftToken);
sb.Append(columns[i].TrimStart(leftToken).TrimEnd(rightToken));
sb.Append(rightToken);
}
if (i < columns.Length - 1)
{
sb.Append(',');
}
}
sb.Append(") VALUES (");
for (int i = 0; i < columns.Length; ++i)
{
if (values[i] != null && values[i] is ExpressionClip)
{
ExpressionClip expr = (ExpressionClip)values[i];
sb.Append(expr.ToString());
AddExpressionParameters(expr, cmd);
if (i < columns.Length - 1)
{
sb.Append(',');
}
}
else
{
string paramName = MakeUniqueParamNameWithPrefixToken();
sb.Append(paramName);
if (i < columns.Length - 1)
{
sb.Append(',');
}
DbParameter p = cmd.CreateParameter();
p.ParameterName = paramName;
p.DbType = types[i];
p.Value = GetValue(p.DbType, values[i]);
cmd.Parameters.Add(p);
}
}
sb.Append(')');
}
cmd.CommandText = SqlQueryUtils.ReplaceDatabaseTokens(sb.ToString(), leftToken, rightToken, paramPrefixToken, wildcharToken, wildsinglecharToken);
PrepareCommand(cmd);
return(cmd);
}
public CustomQueryTable(SubQuery subQuery)
: base(subQuery.ToString())
{
this.tableName = subQuery.ToString();
SqlQueryUtils.AddParameters(this.parameters, subQuery);
}
