// a ctor for .WhereExists support
internal ConditionChainer(Chainer prev, INonSelectView nonSelectView, bool exists,
PredicateGroup predicateGroup = null)
: this(prev, predicateGroup)
{
CheckNullAndThrow(Arg(() => nonSelectView, nonSelectView));
SelectChainer select = new SelectChainer((Chainer)nonSelectView, new Column[] { Designer.Null }, false);
var view = new View(select, Query);
Query.AddArguments(view.Query.Arguments.ToArray());
Build = (buildContext, buildArgs) =>
{
string keyword = exists ? Text.Exists : Text.NotExists;
var sql = Text.GenerateSql(100)
.NewLine(predicateGroup.Build(PredicateGroupType.Begin, Keyword)).S()
.Append(prev.ExpressionGroupType.IsBegin() ? Text.LeftBracket : null)
.Append(keyword).S()
.EncloseLeft()
.Append(view.Build(buildContext, buildArgs))
.EncloseRight()
.Append(prev.ExpressionGroupType.IsEnd() ? Text.RightBracket : null)
.Append(predicateGroup.Build(PredicateGroupType.End, null))
.S();
TryThrow(buildContext);
return(sql.ToString());
};
}
internal ConditionChainer(Chainer prev, ScalarArgument argument1, ScalarArgument argument2, bool equality,
PredicateGroup predicateGroup = null)
: this(prev, predicateGroup)
{
CheckNullAndThrow(Arg(() => argument1, argument1));
TryTake(argument1);
TryTake(argument2);
var expression = Expression.EqualitySimplifier(argument1, argument2, equality);
Query.AddArguments(expression.Arguments);
Build = (buildContext, buildArgs) =>
{
var sql = Text.GenerateSql(50)
.NewLine(predicateGroup.Build(PredicateGroupType.Begin, Keyword)).S()
.Append(prev.ExpressionGroupType.IsBegin() ? Text.LeftBracket : null)
.Append(expression.Build(buildContext, buildArgs))
.Append(prev.ExpressionGroupType.IsEnd() ? Text.RightBracket : null)
.Append(predicateGroup.Build(PredicateGroupType.End, null))
.S();
buildContext.TryTakeException(expression.Exception);
TryThrow(buildContext);
return(sql.ToString());
};
}