public override CosmosElement Visit(SqlSelectStarSpec selectSpec, CosmosElement document)
{
if (selectSpec == null)
{
throw new ArgumentNullException(nameof(selectSpec));
}
CosmosObject documentAsObject = (CosmosObject)document;
Dictionary <string, CosmosElement> properties = new Dictionary <string, CosmosElement>();
foreach (KeyValuePair <string, CosmosElement> kvp in documentAsObject)
{
// remove the _rid since it's not needed at this point.
if (kvp.Key != "_rid")
{
properties[kvp.Key] = kvp.Value;
}
}
// if the document only has one property then it means
// that the object was wrapped for binding and needs to be unwrapped.
if (properties.Count != 1)
{
throw new ArgumentException("Tried to run SELECT * on a JOIN query");
}
return(properties.First().Value);
}
public override bool Visit(SqlSelectStarSpec first, SqlObject secondAsObject)
{
if (!(secondAsObject is SqlSelectStarSpec second))
{
return(false);
}
return(true);
}
private QueryUnderConstruction PackageQuery(HashSet <ParameterExpression> inScope)
{
QueryUnderConstruction result = new QueryUnderConstruction();
var inputParam = result.fromParameters.SetInputParameter(typeof(object), ParameterSubstitution.InputParameterName, inScope);
inScope.Add(inputParam);
result.inputQuery = this;
if (this.selectClause == null)
{
var star = new SqlSelectStarSpec();
this.selectClause = new SqlSelectClause(star, null);
}
return(result);
}
public void SqlSelectStarSpecTest()
{
CosmosObject john = CosmosObject.Create(new Dictionary <string, CosmosElement>
{
["name"] = CosmosString.Create("John")
});
CosmosObject johnWrapped = CosmosObject.Create(new Dictionary <string, CosmosElement>
{
["c"] = john
});
SqlSelectStarSpec star = SqlSelectStarSpec.Singleton;
AssertEvaluation(john, star, johnWrapped);
}
public override void Visit(SqlSelectStarSpec sqlSelectStarSpec)
{
this.writer.Write("*");
}
public override SqlObject Visit(SqlSelectStarSpec sqlSelectStarSpec)
{
// Not PII
return(sqlSelectStarSpec);
}
public override bool Visit(SqlSelectStarSpec selectSpec)
{
return(false);
}
public override SqlObject VisitSelect_star_spec([NotNull] sqlParser.Select_star_specContext context)
{
Contract.Requires(context != null);
return(SqlSelectStarSpec.Create());
}
public abstract TOutput Visit(SqlSelectStarSpec selectSpec, TArg input);
public abstract void Visit(SqlSelectStarSpec selectSpec);
public abstract TResult Visit(SqlSelectStarSpec sqlObject);
public override void Visit(SqlSelectStarSpec selectSpec)
{
// SELECT * is always okay.
return;
}
public abstract TResult Visit(SqlSelectStarSpec selectSpec);
public abstract TOutput Visit(SqlSelectStarSpec sqlObject, TArg input);
public override int Visit(SqlSelectStarSpec sqlSelectStarSpec)
{
return(SqlSelectStarSpecHashCode);
}
public abstract void Visit(SqlSelectStarSpec sqlObject);
public override SqlSelectSpec Visit(SqlSelectStarSpec selectSpec)
{
return(selectSpec);
}
