private void ParseSelectManyExpression(Expression node)
{
var methodExpression = node as MethodCallExpression;
Visit(methodExpression.Arguments[0]);
if (!this.context.Fragment.HasOnlyParts(QueryPart.From))
{
var oldContext = this.context;
this.context = oldContext.CopyTo();
var queryTable = new QueryTable(oldContext.WrapToFragment(), this.context.GetTableAlias(oldContext.ExportType));
this.context.Fragment.FromPart.Add(queryTable);
}
var joinContext = this.context.CopyTo();
var joinParser = new QueryExpressionParser(this.connection, joinContext);
joinParser.Parse(methodExpression.Arguments[1]);
Table table = null;
if (joinContext.Fragment.HasOnlyParts(QueryPart.From) && joinContext.Fragment.PartsCount(QueryPart.From) == 1)
{
table = joinContext.Fragment.FromPart.First();
table.Alias = this.context.GetTableAlias(joinContext.ExportType);
}
else if (joinContext.Fragment.HasAnyParts())
{
table = new QueryTable(joinContext.WrapToFragment(), this.context.GetTableAlias(joinContext.ExportType));
}
var joinVisitor = new JoinExpressionVisitor(this.context);
joinVisitor.Parse(methodExpression.Arguments[2]);
if (table != null)
{
this.context.Fragment.FromPart.Add(new JoinTable(table)
{
JoinMode = JoinMode.Default
});
}
}
private void ParseJoinExpression(Expression node, JoinMode mode)
{
var methodExpression = node as MethodCallExpression;
Visit(methodExpression.Arguments[0]);
if (!this.context.Fragment.HasOnlyParts(QueryPart.From))
{
var oldContext = this.context;
this.context = oldContext.CopyTo();
var queryTable = new QueryTable(oldContext.WrapToFragment(), this.context.GetTableAlias(oldContext.ExportType));
this.context.Fragment.FromPart.Add(queryTable);
}
var joinContext = this.context.CopyTo();
var joinParser = new QueryExpressionParser(this.connection, joinContext);
joinParser.Parse(methodExpression.Arguments[1]);
Table table;
if (joinContext.Fragment.HasOnlyParts(QueryPart.From) && joinContext.Fragment.FromPart.Count == 1)
{
table = joinContext.Fragment.FromPart.First();
table.Alias = this.context.GetTableAlias(joinContext.ExportType);
}
else
{
table = new QueryTable(joinContext.WrapToFragment(), this.context.GetTableAlias(joinContext.ExportType));
}
var joinVisitor = new JoinExpressionVisitor(this.context);
joinVisitor.Parse(methodExpression.Arguments[2], methodExpression.Arguments[3], methodExpression.Arguments[4]);
this.context.Fragment.FromPart.Add(new JoinTable(table)
{
JoinMode = mode, JoinCondition = joinVisitor.Condition
});
}
