private static string WriteCondition(Condition condition, SqlParameterCollection parameters)
{
StringBuilder sqlBuilder = new StringBuilder("(");
sqlBuilder.Append(OperandWriter.WriteOperand(condition.Left, parameters));
switch (condition.ConditionType)
{
case Condition.ConditionTypes.Equal:
sqlBuilder.Append("=");
break;
case Condition.ConditionTypes.Greater:
sqlBuilder.Append(">");
break;
case Condition.ConditionTypes.GreaterEqual:
sqlBuilder.Append(">=");
break;
case Condition.ConditionTypes.Less:
sqlBuilder.Append("<");
break;
case Condition.ConditionTypes.LessEqual:
sqlBuilder.Append("<=");
break;
case Condition.ConditionTypes.NotEqual:
sqlBuilder.Append("!=");
break;
case Condition.ConditionTypes.List:
sqlBuilder.Append(" IN ");
break;
case Condition.ConditionTypes.NotList:
sqlBuilder.Append(" NOT IN ");
break;
default:
throw new InvalidCastException("Could not determine Condition Type while writing");
}
sqlBuilder.Append(OperandWriter.WriteOperand(condition.Right, parameters));
sqlBuilder.Append(")");
return(sqlBuilder.ToString());
}
private static string WriteCase(Case caseStatement, SqlParameterCollection parameters)
{
StringBuilder builder = new StringBuilder("CASE ");
foreach (Case.When when in caseStatement.Whens)
{
builder.Append("WHEN (");
builder.Append(ConditionWriter.WriteCondition(when.Condition, parameters));
builder.Append(") THEN (");
builder.Append(OperandWriter.WriteOperand(when.Result, parameters));
builder.Append(") ");
}
if (caseStatement.Else != null)
{
builder.Append("ELSE (");
builder.Append(OperandWriter.WriteOperand(caseStatement.Else, parameters));
builder.Append(") ");
}
builder.Append("END");
return(builder.ToString());
}
