static string BindAllNode(AllNode allNode, List <DbParameter> pars, DbUtility dbUtility)
{
string innerQuery = "not exists ( from " + Bind(allNode.Source, pars, dbUtility) + " " + allNode.RangeVariables.First().Name;
innerQuery += " where NOT(" + Bind(allNode.Body, pars, dbUtility) + ")";
return(innerQuery + ")");
}
internal static string ParseSelect(this ODataQueryOptions options, DbUtility utility)
{
if (options.Count != null)
{
return("count(0)");
}
if (options.SelectExpand == null)
{
return("*");
}
if (options.SelectExpand.SelectExpandClause.AllSelected)
{
return("*");
}
List <string> s = new List <string>();
PathSelectItem select = null;
foreach (var item in options.SelectExpand.SelectExpandClause.SelectedItems)
{
select = item as PathSelectItem;
if (select != null)
{
foreach (PropertySegment path in select.SelectedPath)
{
s.Add(utility.SafeDbObject(path.Property.Name));
}
}
}
return(string.Join(",", s));
}
static string BindAnyNode(AnyNode anyNode, List <DbParameter> pars, DbUtility dbUtility)
{
string innerQuery = "exists ( from " + Bind(anyNode.Source, pars, dbUtility) + " " + anyNode.RangeVariables.First().Name;
if (anyNode.Body != null)
{
innerQuery += " where " + Bind(anyNode.Body, pars, dbUtility);
}
return(innerQuery + ")");
}
public static string ParseOrderBy(this ODataQueryOptions options, DbUtility dbUtility)
{
if (options.Count != null ||
options.OrderBy == null ||
options.OrderBy.OrderByClause == null)
{
return(string.Empty);
}
return(BindOrderByClause(options.OrderBy.OrderByClause, dbUtility));
}
static string BindOrderByClause(OrderByClause orderByClause, DbUtility dbUtility)
{
string orderby = string.Format("{0} {1}", Bind(orderByClause.Expression, dbUtility), GetDirection(orderByClause.Direction));
if (orderByClause.ThenBy != null)
{
orderby += "," + BindOrderByClause(orderByClause.ThenBy, dbUtility);
}
return(orderby);
}
static string BindBinaryOperatorKind(BinaryOperatorKind binaryOpertor, DbUtility dbUtility)
{
switch (binaryOpertor)
{
case BinaryOperatorKind.Add:
return("+");
case BinaryOperatorKind.And:
return("AND");
case BinaryOperatorKind.Divide:
return("/");
case BinaryOperatorKind.Equal:
return("=");
case BinaryOperatorKind.GreaterThan:
return(">");
case BinaryOperatorKind.GreaterThanOrEqual:
return(">=");
case BinaryOperatorKind.LessThan:
return("<");
case BinaryOperatorKind.LessThanOrEqual:
return("<=");
case BinaryOperatorKind.Modulo:
return("%");
case BinaryOperatorKind.Multiply:
return("*");
case BinaryOperatorKind.NotEqual:
return("<>");
case BinaryOperatorKind.Or:
return("OR");
case BinaryOperatorKind.Subtract:
return("-");
default:
return(null);
}
}
static string Bind(QueryNode node, DbUtility dbUtility)
{
if (node is SingleValueNode singleValueNode)
{
switch (singleValueNode.Kind)
{
case QueryNodeKind.ResourceRangeVariableReference:
return(BindRangeVariable((node as ResourceRangeVariableReferenceNode).RangeVariable, dbUtility));
case QueryNodeKind.SingleValuePropertyAccess:
return(BindPropertyAccessQueryNode(node as SingleValuePropertyAccessNode, dbUtility));
default:
return(string.Empty);
}
}
return(string.Empty);
}
internal static string ParseSelect(this ExpandedNavigationSelectItem expanded, DbUtility utility)
{
if (expanded.CountOption.HasValue)
{
return("count(0)");
}
if (expanded.SelectAndExpand == null)
{
return("*");
}
if (expanded.SelectAndExpand.AllSelected)
{
return("*");
}
List <string> s = new List <string>();
PathSelectItem select = null;
foreach (var item in expanded.SelectAndExpand.SelectedItems)
{
select = item as PathSelectItem;
if (select != null)
{
foreach (PropertySegment path in select.SelectedPath)
{
s.Add(utility.SafeDbObject(path.Property.Name));
}
}
}
return(string.Join(",", s));
}
static string BindNavigationPropertyNode(SingleValueNode singleValueNode, IEdmNavigationProperty edmNavigationProperty, List <DbParameter> pars, DbUtility dbUtility)
{
return(Bind(singleValueNode, pars, dbUtility) + "." + dbUtility.SafeDbObject(edmNavigationProperty.Name));
}
internal static string Bind(QueryNode node, List <DbParameter> pars, DbUtility dbUtility)
{
switch (node.Kind)
{
case QueryNodeKind.None:
break;
case QueryNodeKind.Constant:
return(BindConstantNode(node as ConstantNode, pars, dbUtility));
case QueryNodeKind.Convert:
return(BindConvertNode(node as ConvertNode, pars, dbUtility));
case QueryNodeKind.NonResourceRangeVariableReference:
return(BindRangeVariable((node as NonResourceRangeVariableReferenceNode).RangeVariable, dbUtility));
case QueryNodeKind.BinaryOperator:
return(BindBinaryOperatorNode(node as BinaryOperatorNode, pars, dbUtility));
case QueryNodeKind.UnaryOperator:
return(BindUnaryOperatorNode(node as UnaryOperatorNode, pars, dbUtility));
case QueryNodeKind.SingleValuePropertyAccess:
return(BindPropertyAccessQueryNode(node as SingleValuePropertyAccessNode, dbUtility));
case QueryNodeKind.CollectionPropertyAccess:
return(BindCollectionPropertyAccessNode(node as CollectionPropertyAccessNode, dbUtility));
case QueryNodeKind.SingleValueFunctionCall:
return(BindSingleValueFunctionCallNode(node as SingleValueFunctionCallNode, pars, dbUtility));
case QueryNodeKind.Any:
return(BindAnyNode(node as AnyNode, pars, dbUtility));
case QueryNodeKind.CollectionNavigationNode:
case QueryNodeKind.SingleNavigationNode:
SingleNavigationNode navigationNode = node as SingleNavigationNode;
return(BindNavigationPropertyNode(navigationNode.Source, navigationNode.NavigationProperty, pars, dbUtility));
case QueryNodeKind.SingleValueOpenPropertyAccess:
break;
case QueryNodeKind.SingleResourceCast:
break;
case QueryNodeKind.All:
return(BindAllNode(node as AllNode, pars, dbUtility));
case QueryNodeKind.CollectionResourceCast:
break;
case QueryNodeKind.ResourceRangeVariableReference:
return(BindRangeVariable((node as ResourceRangeVariableReferenceNode).RangeVariable, dbUtility));
case QueryNodeKind.SingleResourceFunctionCall:
break;
case QueryNodeKind.CollectionFunctionCall:
break;
case QueryNodeKind.CollectionResourceFunctionCall:
break;
case QueryNodeKind.NamedFunctionParameter:
break;
case QueryNodeKind.ParameterAlias:
break;
case QueryNodeKind.EntitySet:
break;
case QueryNodeKind.KeyLookup:
break;
case QueryNodeKind.SearchTerm:
break;
case QueryNodeKind.CollectionOpenPropertyAccess:
break;
case QueryNodeKind.CollectionComplexNode:
break;
case QueryNodeKind.SingleComplexNode:
break;
case QueryNodeKind.Count:
break;
case QueryNodeKind.SingleValueCast:
break;
default:
return(string.Empty);
}
return(string.Empty);
}
public static string ParseFilter(this FilterClause filterClause, List <DbParameter> pars, DbUtility dbUtility)
{
if (filterClause == null || filterClause.Expression == null)
{
return(string.Empty);
}
return(Bind(filterClause.Expression, pars, dbUtility));
}
static string BindBinaryOperatorNode(BinaryOperatorNode binaryOperatorNode, List <DbParameter> pars, DbUtility dbUtility)
{
var left = Bind(binaryOperatorNode.Left, pars, dbUtility);
var right = Bind(binaryOperatorNode.Right, pars, dbUtility);
if (binaryOperatorNode.OperatorKind == BinaryOperatorKind.Equal &&
right == "null")
{
return("(" + left + " is null)");
}
if (binaryOperatorNode.OperatorKind == BinaryOperatorKind.NotEqual &&
right == "null")
{
return("(" + left + " is not null)");
}
return("(" + left + " " + BindBinaryOperatorKind(binaryOperatorNode.OperatorKind, dbUtility) + " " + right + ")");
}
static string BindRangeVariable(NonResourceRangeVariable nonentityRangeVariable, DbUtility dbUtility)
{
return(nonentityRangeVariable.Name);
}
static string BindRangeVariable(ResourceRangeVariable entityRangeVariable, DbUtility dbUtility)
{
return(dbUtility.SafeDbObject(entityRangeVariable.Name));
}
static string BindNavigationPropertyNode(SingleEntityNode singleEntityNode, IEdmNavigationProperty edmNavigationProperty, List <DbParameter> pars, DbUtility dbUtility)
{
return(Bind(singleEntityNode, pars, dbUtility) + "." + edmNavigationProperty.Name);
}
static string BindConstantNode(ConstantNode constantNode, List <DbParameter> pars, DbUtility dbUtility)
{
return(dbUtility.CreateParameter(constantNode.Value, pars).ParameterName);
}
static string BindConvertNode(ConvertNode convertNode, List <DbParameter> pars, DbUtility dbUtility)
{
return(Bind(convertNode.Source, pars, dbUtility));
}
static string BindRangeVariable(ResourceRangeVariable entityRangeVariable, DbUtility dbUtility)
{
return(entityRangeVariable.Name);
}
public static string ParseOrderBy(this ExpandedNavigationSelectItem expanded, DbUtility dbUtility)
{
if (expanded.CountOption.HasValue)
{
return(string.Empty);
}
if (expanded.OrderByOption == null)
{
return(string.Empty);
}
return(BindOrderByClause(expanded.OrderByOption, dbUtility));
}
static string BindCollectionPropertyAccessNode(CollectionPropertyAccessNode collectionPropertyAccessNode, DbUtility dbUtility)
{
return(dbUtility.SafeDbObject(collectionPropertyAccessNode.Property.Name));
//return Bind(collectionPropertyAccessNode.Source) + "." + collectionPropertyAccessNode.Property.Name;
}
static string BindSingleValueFunctionCallNode(SingleValueFunctionCallNode node, List <DbParameter> pars, DbUtility dbUtility)
{
var arguments = node.Parameters.ToList();
string name = string.Empty;
string parName = string.Empty;
object parValue = null;
DbParameter dbpar = null;
switch (node.Name)
{
case "concat":
List <string> p = new List <string>();
foreach (var item in arguments)
{
parValue = Bind(item, pars, dbUtility);
dbpar = dbUtility.CreateParameter(parValue, pars);
p.Add(dbpar.ParameterName);
}
return(string.Format("concat({0})", string.Join(",", p)));
case "contains":
name = dbUtility.SafeDbObject(Bind(arguments[0], pars, dbUtility));
parValue = string.Format("%{0}%", (arguments[1] as ConstantNode).Value);
dbpar = dbUtility.CreateParameter(parValue, pars);
return(string.Format("{0} like {1}", name, dbpar.ParameterName));
case "endswith":
name = dbUtility.SafeDbObject(Bind(arguments[0], pars, dbUtility));
parValue = string.Format("%{0}", (arguments[1] as ConstantNode).Value);
dbpar = dbUtility.CreateParameter(parValue, pars);
return(string.Format("{0} like {1}", name, dbpar.ParameterName));
case "startswith":
name = Bind(arguments[0], pars, dbUtility);
parValue = string.Format("{0}%", (arguments[1] as ConstantNode).Value);
dbpar = dbUtility.CreateParameter(parValue, pars);
return(string.Format("{0} like {1}", name, parName));
case "length":
return(string.Format("len({0})", Bind(arguments[0], pars, dbUtility)));
case "indexof":
name = dbUtility.SafeDbObject(Bind(arguments[0], pars, dbUtility));
parValue = (arguments[1] as ConstantNode).Value;
dbpar = dbUtility.CreateParameter(parValue, pars);
return(string.Format("charindex({0},{1})", dbpar.ParameterName, name));
case "substring":
parValue = Bind(arguments[0], pars, dbUtility);
dbpar = dbUtility.CreateParameter(parValue, pars);
return(string.Format("SUBSTRING({0},{1},{2})",
dbpar.ParameterName,
(arguments[1] as ConstantNode).Value,
arguments.Count > 2 ? (arguments[2] as ConstantNode).Value : 0));
case "tolower":
parValue = Bind(arguments[0], pars, dbUtility);
dbpar = dbUtility.CreateParameter(parValue, pars);
return("LOWER(" + dbpar.ParameterName + ")");
case "toupper":
parValue = Bind(arguments[0], pars, dbUtility);
dbpar = dbUtility.CreateParameter(parValue, pars);
return("UPPER(" + parName + ")");
case "trim":
case "year":
case "years":
case "month":
case "months":
case "day":
case "days":
case "hour":
case "hours":
case "minute":
case "minutes":
case "second":
case "seconds":
case "round":
case "floor":
case "ceiling":
parValue = Bind(arguments[0], pars, dbUtility);
dbpar = dbUtility.CreateParameter(parValue, pars);
return(node.Name + "(" + parName + ")");
default:
throw new NotImplementedException();
}
}
static string BindPropertyAccessQueryNode(SingleValuePropertyAccessNode singleValuePropertyAccessNode, DbUtility dbUtility)
{
return(dbUtility.SafeDbObject(singleValuePropertyAccessNode.Property.Name));
}
static string BindUnaryOperatorNode(UnaryOperatorNode unaryOperatorNode, List <DbParameter> pars, DbUtility dbUtility)
{
return(BindUnaryOperatorKind(unaryOperatorNode.OperatorKind) + "(" + Bind(unaryOperatorNode.Operand, pars, dbUtility) + ")");
}
public static string ParseFilter(this ExpandedNavigationSelectItem expanded, List <DbParameter> pars, DbUtility dbUtility)
{
if (expanded == null || expanded.FilterOption == null)
{
return(string.Empty);
}
string where = ParseFilter(expanded.FilterOption, pars, dbUtility);
if (string.IsNullOrEmpty(where))
{
return(string.Empty);
}
return(string.Format(" and ({0}) ", where));
}
public static string ParseFilter(this ODataQueryOptions options, List <DbParameter> pars, DbUtility dbUtility)
{
if (options.Filter == null || options.Filter.FilterClause == null)
{
return(string.Empty);
}
string where = ParseFilter(options.Filter.FilterClause, pars, dbUtility);
if (!string.IsNullOrEmpty(where))
{
where = " where " + where;
}
return(where);
}