protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
if (expression is LuceneQueryExpression)
{
return(VisitLuceneQueryExpression((LuceneQueryExpression)expression));
}
if (expression is LuceneQueryAnyFieldExpression)
{
return(VisitLuceneQueryAnyFieldExpression((LuceneQueryAnyFieldExpression)expression));
}
if (expression is LuceneQueryFieldExpression)
{
return(VisitLuceneQueryFieldExpression((LuceneQueryFieldExpression)expression));
}
if (expression is LuceneRangeQueryExpression)
{
return(VisitLuceneRangeQueryExpression((LuceneRangeQueryExpression)expression));
}
if (expression is LuceneQueryPredicateExpression)
{
return(VisitLuceneQueryPredicateExpression((LuceneQueryPredicateExpression)expression));
}
if (expression is BoostBinaryExpression)
{
return(VisitBoostBinaryExpression((BoostBinaryExpression)expression));
}
return(base.VisitExtensionExpression(expression));
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
#endif
{
if (expression is SelectIdentifierVariableNameExpression)
{
var siv = expression as SelectIdentifierVariableNameExpression;
var v = _values[siv.Name].ToString();
if (!String.IsNullOrEmpty(siv.IdentifierPrefix) && v.StartsWith(siv.IdentifierPrefix))
{
v = v.Substring(siv.IdentifierPrefix.Length);
}
if (siv.Type.IsInstanceOfType(v))
{
return(Expression.Constant(v, siv.Type));
}
var converted = _converter(v, siv.Type);
return(Expression.Constant(converted, siv.Type));
}
if (expression is SelectVariableNameExpression)
{
var svn = expression as SelectVariableNameExpression;
var v = _values[svn.Name];
if (svn.Type.IsInstanceOfType(v))
{
return(Expression.Constant(v, svn.Type));
}
var converted = _converter(v.ToString(), svn.Type);
return(Expression.Constant(converted, svn.Type));
}
return(expression);
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
var notNullableExpression = expression as NotNullableExpression;
return(notNullableExpression != null
? expression
: base.VisitExtensionExpression(expression));
}
protected internal override Expression VisitExtensionExpression(ExtensionExpression expression)
{
if (expression.CanReduce)
{
return(VisitExpression(expression.ReduceAndCheck()));
}
else
{
return(VisitUnhandledItem <ExtensionExpression, Expression> (expression, "VisitExtensionExpression", BaseVisitExtensionExpression));
}
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
var discriminatorExpression = expression as DiscriminatorPredicateExpression;
if (discriminatorExpression != null &&
discriminatorExpression.QuerySource == _querySource)
{
return(new DiscriminatorPredicateExpression(_discriminatorPredicate, _querySource));
}
return(expression);
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
// Nominated expressions need to prevent joins on non-Identifier member expressions
// (for the test expression of conditional expressions only)
// Otherwise an extra join is created and the GroupBy and Select clauses will not match
var old = _preventJoinsInConditionalTest;
_preventJoinsInConditionalTest = (NhExpressionType)expression.NodeType == NhExpressionType.Nominator;
var expr = base.VisitExtensionExpression(expression);
_preventJoinsInConditionalTest = old;
return(expr);
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
if (expression is AllowSpecialCharactersExpression)
{
return(VisitAllowSpecialCharactersExpression((AllowSpecialCharactersExpression)expression));
}
if (expression is LuceneQueryPredicateExpression)
{
return(VisitQueryPredicateExpression((LuceneQueryPredicateExpression)expression));
}
return(base.VisitExtensionExpression(expression));
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
var aliasExpression = expression as AliasExpression;
if (aliasExpression != null)
{
return(VisitExpression(aliasExpression.Expression));
}
var notNullableExpression = expression as NotNullableExpression;
if (notNullableExpression != null)
{
return(expression);
}
var columnExpression = expression as ColumnExpression
?? expression.TryGetColumnExpression();
if (columnExpression != null &&
columnExpression.Property.IsNullable)
{
AddToResult(new IsNullExpression(expression));
return(expression);
}
var isNullExpression = expression as IsNullExpression;
if (isNullExpression != null)
{
return(expression);
}
var inExpression = expression as InExpression;
if (inExpression != null)
{
return(expression);
}
return(expression);
}
protected internal override Expression VisitExtensionExpression(ExtensionExpression expression)
protected internal virtual Expression VisitExtensionExpression(ExtensionExpression expression)
{
ArgumentUtility.CheckNotNull("expression", expression);
return(expression.VisitChildren(this));
}
protected internal override Expression VisitExtensionExpression(ExtensionExpression expression)
{
ArgumentUtility.CheckNotNull("expression", expression);
return(Expression.Parameter(expression.Type, expression.ToString()));
}
private Expression VisitChildrenWithGivenSemantics(ExtensionExpression expression, SqlExpressionContext childContext)
{
var visitor = new SqlContextExpressionVisitor(childContext, _stage, _context);
return(visitor.VisitExtensionExpression(expression));
}
protected internal virtual Expression VisitExtensionExpression(ExtensionExpression expression)
{
return(expression.VisitChildren(this));
}
protected internal override Expression VisitExtensionExpression(ExtensionExpression expression)
{
return(Expression.Parameter(expression.Type, expression.ToString()));
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
return(expression is NotNullableExpression
? expression
: base.VisitExtensionExpression(expression));
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
return(base.VisitExtensionExpression(expression));
}
public static Expression CallVisitChildren(ExtensionExpression target, ExpressionVisitor visitor)
#endif
{
return((Expression)PrivateInvoke.InvokeNonPublicMethod(target, "VisitChildren", visitor));
}
protected Expression BaseVisitExtensionExpression(ExtensionExpression expression)
{
return(base.VisitExtensionExpression(expression));
}
protected override Expression VisitExtensionExpression(ExtensionExpression expression)
{
var selectVariableNameExpression = expression as SelectVariableNameExpression;
return(selectVariableNameExpression != null?VisitSelectVariableNameExpression(selectVariableNameExpression) : base.VisitExtensionExpression(expression));
}
