/// Creates an instance of the PsqlGenratingQueryModelVisitor to visit the QueryModel provided as an argument and to generate a corresponding PostgreSQL query.
public static QueryCommand GeneratePsqlQuery(QueryModel queryModel)
{
var visitor = new PsqlGeneratingQueryModelVisitor();
visitor.VisitQueryModel(queryModel);
return(visitor.GetPsqlCommand());
}
/// Creates an instance of the PsqlGeneratingExpressionVisitor based on provided PsqlGeneratingQueryModelVisitor instance to visit the LINQ expression provided as an argument and to generate a corresponding part of the PostgreSQL query.
public static string GetPsqlExpression(Expression linqExpression,
PsqlGeneratingQueryModelVisitor queryModelVisitor)
{
var visitor = new PsqlGeneratingExpressionVisitor(queryModelVisitor);
visitor.Visit(linqExpression);
return(visitor.GetPsqlExpression());
}
private PsqlGeneratingExpressionVisitor(PsqlGeneratingQueryModelVisitor queryModelVisitor)
{
_psqlExpressionBuilder = new StringBuilder();
_queryModelVisitor = queryModelVisitor;
_visitorTriggeredByMemberVisitor = false;
_readingConditionalStatement = false;
_renamingColumns = false;
}
