public QueryExpression(FromClause from, QueryBody queryBody)
{
if (from == null)
throw new ArgumentNullException("from");
if (queryBody == null)
throw new ArgumentNullException("queryBody");
this.from = from;
this.queryBody = queryBody;
}
public QueryContinuation(Identifier identifier, QueryBody queryBody)
{
this.identifier = identifier;
this.queryBody = queryBody;
}
public QueryBody Update(QueryBody expression, IEnumerable<QueryBodyClause> clauses, QueryContinuation continuation, SelectOrGroupClause sogc)
{
if (expression.Clauses != clauses || expression.Continuation != continuation || expression.SelectOrGroup != sogc)
return new QueryBody(new ClauseList(clauses), sogc, continuation);
return expression;
}
public QueryContinuation Update(QueryContinuation expression, Identifier identifier, QueryBody body)
{
if (expression.Identifier != identifier || expression.QueryBody != body)
return new QueryContinuation(identifier, body);
return expression;
}
public QueryExpression Update(QueryExpression original, FromClause from, QueryBody body)
{
if (from != original.From || body != original.QueryBody)
return new QueryExpression(from, body);
return original;
}