private static string _CreateSQLFromFindOptions(IDatabaseService db,
string objectFullName,
ObjectFindOptions options,
ObjectIndex[] indexes,
string templateSql,
IList<IDataParameter> parameters)
{
var logic = options.Logic;
var oper = options.Operator;
var limit = options.Limit;
bool useOr = ObjectFindLogic.Or == logic;
bool useLike = ObjectFindOperator.Like == oper;
bool isNull = ObjectFindOperator.IsNull == oper;
var limitSql = (0 == limit) ? SQLStatements.NoLimit : string.Format(SQLStatements.Limit, limit);
var tableName = _CreateTableName(db, objectFullName);
var sqlConstraint = new StringBuilder();
if (null != indexes && 0 < indexes.Length)
{
// initialize the where clause
sqlConstraint.Append("WHERE ");
for (int i = 0; indexes.Length > i; i++)
{
var idx = indexes[i];
// skip over null objects
if (null == idx)
{
continue;
}
if (0 < i)
{
if (useOr)
{
sqlConstraint.Append(" OR ");
}
else
{
sqlConstraint.Append(" AND ");
}
}
var paramName = "p" + i + idx.Name;
var value = idx.GetObjectValue();
sqlConstraint.Append(db.MakeQuotedName(idx.Name));
if (useLike)
{
sqlConstraint.Append(' ');
sqlConstraint.Append(db.MakeLikeParamReference(paramName));
parameters.Add(ObjectIndexProvider.MakeLikeParameter(db, paramName, value));
}
else if (isNull)
{
sqlConstraint.Append(" IS NULL");
}
else
{
sqlConstraint.Append(" = ");
sqlConstraint.Append(db.MakeParamReference(paramName));
parameters.Add(db.MakeParam(paramName, value));
}
}
}
var orderBySql = _CreateOrderBySQL(db, options.Order);
return string.Format(templateSql, tableName, sqlConstraint.ToString(), orderBySql, limitSql);
}