public virtual SqlExpression VisitCondition(SqlConditionExpression expression)
{
var test = expression.Test;
if (test != null)
{
test = Visit(test);
}
var ifTrue = expression.IfTrue;
if (ifTrue != null)
{
ifTrue = Visit(ifTrue);
}
var ifFalse = expression.IfFalse;
if (ifFalse != null)
{
ifFalse = Visit(ifFalse);
}
return(SqlExpression.Condition(test, ifTrue, ifFalse));
}
public static void VisitCondition()
{
var exp = SqlExpression.Condition(SqlExpression.Constant(SqlObject.Boolean(true)),
SqlExpression.Constant(SqlObject.BigInt(902)),
SqlExpression.Constant(SqlObject.Integer(433)));
Visit(exp);
}
public static void GetConditionString(bool test, object ifTrue, object ifFalse, string expected)
{
var testExp = SqlExpression.Constant(SqlObject.Boolean(test));
var ifTrueExp = SqlExpression.Constant(SqlObject.New(SqlValueUtil.FromObject(ifTrue)));
var ifFalseExp = SqlExpression.Constant(SqlObject.New(SqlValueUtil.FromObject(ifFalse)));
var condition = SqlExpression.Condition(testExp, ifTrueExp, ifFalseExp);
var sql = condition.ToString();
Assert.Equal(expected, sql);
}
public static void SerializeCondition(bool test, object ifTrue, object ifFalse)
{
var testExp = SqlExpression.Constant(SqlObject.Boolean(test));
var ifTrueExp = SqlExpression.Constant(SqlObject.New(SqlValueUtil.FromObject(ifTrue)));
var ifFalseExp = SqlExpression.Constant(SqlObject.New(SqlValueUtil.FromObject(ifFalse)));
var condition = SqlExpression.Condition(testExp, ifTrueExp, ifFalseExp);
var result = BinarySerializeUtil.Serialize(condition);
Assert.NotNull(result.Test);
Assert.NotNull(result.IfTrue);
Assert.NotNull(result.IfFalse);
}
public static async Task ReduceCondition(bool test, object ifTrue, object ifFalse, object expected)
{
var testExp = SqlExpression.Constant(SqlObject.Boolean(test));
var ifTrueExp = SqlExpression.Constant(SqlObject.New(SqlValueUtil.FromObject(ifTrue)));
var ifFalseExp = SqlExpression.Constant(SqlObject.New(SqlValueUtil.FromObject(ifFalse)));
var condition = SqlExpression.Condition(testExp, ifTrueExp, ifFalseExp);
var result = await condition.ReduceAsync(null);
Assert.IsType <SqlConstantExpression>(result);
var expectedValue = SqlObject.New(SqlValueUtil.FromObject(expected));
Assert.Equal(expectedValue, ((SqlConstantExpression)result).Value);
}
