public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
builder.Append(expression.FunctioName);
builder.Append("(");
if (expression.Arguments != null &&
expression.Arguments.Length > 0)
{
var args = expression.Arguments;
var argc = args.Length;
for (int i = 0; i < argc; i++)
{
Visit(args[i]);
if (i < argc - 1)
{
builder.Append(", ");
}
}
}
builder.Append(")");
return(expression);
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var invoke = new Invoke(expression.FunctioName, expression.Arguments);
aggFunFound = invoke.IsAggregate(query);
return base.VisitFunctionCall(expression);
}
//public override SqlExpression VisitConstant(SqlConstantExpression constant) {
// var value = constant.Value;
// if (value.IsNull)
// return constant;
// var obj = value.Value;
// if (obj is SqlQueryObject) {
// return EvaluateQueryPlan((SqlQueryObject) obj);
// }
// return base.VisitConstant(constant);
//}
//private SqlConstantExpression EvaluateQueryPlan(SqlQueryObject obj) {
// if (context.QueryContext == null)
// throw new ExpressionEvaluateException("A query context is required to evaluate a query.");
// try {
// var plan = obj.QueryPlan;
// var result = plan.Evaluate(context.QueryContext);
// return SqlExpression.Constant(new DataObject(new TabularType(), SqlTabular.From(result)));
// } catch (ExpressionEvaluateException) {
// throw;
// } catch (Exception ex) {
// throw new ExpressionEvaluateException("Could not evaluate a query.", ex);
// }
//}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
try {
var invoke = new Invoke(expression.FunctioName, expression.Arguments);
IRequest request = null;
IVariableResolver variableResolver = null;
IGroupResolver groupResolver = null;
if (context != null)
{
request = context.Request;
variableResolver = context.VariableResolver;
groupResolver = context.GroupResolver;
}
// TODO: if we don't have a return value (PROCEDURES) what should w return?
var result = invoke.Execute(request, variableResolver, groupResolver);
if (!result.HasReturnValue)
{
return(SqlExpression.Constant(DataObject.Null()));
}
return(SqlExpression.Constant(result.ReturnValue));
} catch (ExpressionEvaluateException) {
throw;
} catch (Exception ex) {
throw new ExpressionEvaluateException(String.Format("Could not evaluate function expression '{0}' because of an error.", expression), ex);
}
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var invoke = new Invoke(expression.FunctioName, expression.Arguments);
aggFunFound = invoke.IsAggregate(query);
return(base.VisitFunctionCall(expression));
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var invoke = new Invoke(expression.FunctioName, expression.Arguments);
var function = invoke.ResolveRoutine(query) as IFunction;
if (function != null)
{
SetType(function.ReturnType(invoke, query, variableResolver));
}
return(base.VisitFunctionCall(expression));
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var args = expression.Arguments;
foreach (var arg in args) {
columnNames.AddRange(arg.Value.DiscoverReferences());
}
return base.VisitFunctionCall(expression);
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var invoke = new Invoke(expression.FunctioName, expression.Arguments);
var function = invoke.ResolveRoutine(queryContext) as IFunction;
if (function != null)
dataType = function.ReturnType(invoke, queryContext, variableResolver);
return base.VisitFunctionCall(expression);
}
/// <summary>
/// Visits the expression that calls the function defined.
/// </summary>
/// <param name="expression">The <see cref="SqlFunctionCallExpression"/> to visit.</param>
/// <returns></returns>
public virtual SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var ags = VisitInvokeArgumentList(expression.Arguments);
return SqlExpression.FunctionCall(expression.FunctioName, ags);
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
return base.VisitFunctionCall(expression);
}
//public override SqlExpression VisitConstant(SqlConstantExpression constant) {
// var value = constant.Value;
// if (value.IsNull)
// return constant;
// var obj = value.Value;
// if (obj is SqlQueryObject) {
// return EvaluateQueryPlan((SqlQueryObject) obj);
// }
// return base.VisitConstant(constant);
//}
//private SqlConstantExpression EvaluateQueryPlan(SqlQueryObject obj) {
// if (context.QueryContext == null)
// throw new ExpressionEvaluateException("A query context is required to evaluate a query.");
// try {
// var plan = obj.QueryPlan;
// var result = plan.Evaluate(context.QueryContext);
// return SqlExpression.Constant(new DataObject(new TabularType(), SqlTabular.From(result)));
// } catch (ExpressionEvaluateException) {
// throw;
// } catch (Exception ex) {
// throw new ExpressionEvaluateException("Could not evaluate a query.", ex);
// }
//}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
try {
var invoke = new Invoke(expression.FunctioName, expression.Arguments);
IRequest request = null;
IVariableResolver variableResolver = null;
IGroupResolver groupResolver = null;
if (context != null) {
request = context.Request;
variableResolver = context.VariableResolver;
groupResolver = context.GroupResolver;
}
// TODO: if we don't have a return value (PROCEDURES) what should w return?
var result = invoke.Execute(request, variableResolver, groupResolver);
if (!result.HasReturnValue)
return SqlExpression.Constant(DataObject.Null());
return SqlExpression.Constant(result.ReturnValue);
} catch (ExpressionEvaluateException) {
throw;
} catch (Exception ex) {
throw new ExpressionEvaluateException(String.Format("Could not evaluate function expression '{0}' because of an error.", expression), ex);
}
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
builder.Append(expression.FunctioName);
builder.Append("(");
if (expression.Arguments != null &&
expression.Arguments.Length > 0) {
var args = expression.Arguments;
var argc = args.Length;
for (int i = 0; i < argc; i++) {
Visit(args[i]);
if (i < argc - 1)
builder.Append(", ");
}
}
builder.Append(")");
return expression;
}
public override SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
return(base.VisitFunctionCall(expression));
}
/// <summary>
/// Visits the expression that calls the function defined.
/// </summary>
/// <param name="expression">The <see cref="SqlFunctionCallExpression"/> to visit.</param>
/// <returns></returns>
public virtual SqlExpression VisitFunctionCall(SqlFunctionCallExpression expression)
{
var ags = VisitExpressionList(expression.Arguments);
return(SqlExpression.FunctionCall(expression.FunctioName, ags));
}
