public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
if (!String.IsNullOrEmpty(node.Field))
{
AddField(node);
}
}
public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
var validationInfo = context.GetValidationInfo();
AddField(validationInfo, node, context);
AddOperation(validationInfo, "exists", node.Field);
}
protected internal override void VisitExistsNode(SnapshotBuilder builder, ExistsNode node)
{
if (builder.IsVisited(node))
{
return;
}
builder.AddNode(node, NodeInfo.Create);
base.VisitExistsNode(builder, node);
}
protected internal override void VisitExistsNode(SchemaBuilder builder, ExistsNode node)
{
if (builder.IsVisited(node))
{
return;
}
builder.AddNode(node, ReteNode.Create);
base.VisitExistsNode(builder, node);
}
public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
_writer.WriteLine("Exists: ");
_writer.Indent++;
_writer.WriteLineIf(node.Field != null, "Field: {0}", node.Field);
_writer.WriteLineIf(node.IsNegated.HasValue, "IsNegated: {0}", node.IsNegated);
_writer.WriteLineIf(node.Prefix != null, "Prefix: {0}", node.Prefix);
WriteData(node);
_writer.Indent--;
}
public override bool Visit <T, TProperty>(ExistsNode <T, TProperty> node, Func <RuntimeVisitor, bool> next)
{
_current = _vertices.Get(node.Id,
id => new Vertex(typeof(ExistsNode <,>), typeof(Token <T, TProperty>), "exists"));
if (_stack.Count > 0)
{
_edges.Add(new Edge(_stack.Peek(), _current, _current.TargetType.Name));
}
return(Next(() => base.Visit(node, next)));
}
public override bool Visit <TT, TTProperty>(ExistsNode <TT, TTProperty> node,
Func <RuntimeVisitor, bool> next)
{
var locator = this as ExistsNodeSelector <TT, TTProperty>;
if (locator != null)
{
locator._node = node;
return(false);
}
return(base.Visit(node, next));
}
public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
var validationInfo = context.GetValidationInfo();
string field = null;
if (!String.IsNullOrEmpty(node.Field))
{
field = String.Equals(validationInfo.QueryType, QueryType.Query) ? node.GetFullName() : node.Field;
if (!field.StartsWith("@"))
{
validationInfo.ReferencedFields.Add(field);
}
}
AddOperation(validationInfo, "exists", field);
}
public void Select <TNode>(Node <TNode> node)
where TNode : class
{
_node = null;
node.Accept(this);
if (_node == null)
{
ExistsNode <T, TProperty> compareNode = _configurator.Exists <T, TProperty>();
var parentNode = node as Node <Token <T, TProperty> >;
if (parentNode == null)
{
throw new ArgumentException("Expected " + typeof(T).Tokens() + ", but was "
+ typeof(TNode).Tokens());
}
parentNode.AddActivation(compareNode);
_node = compareNode;
}
_next.Select(_node);
}
public override bool Visit <T, TProperty>(ExistsNode <T, TProperty> node, Func <RuntimeVisitor, bool> next)
{
Append("ExistsNode[{0}]", Tokens <T>());
return(Indent(next));
}
public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
ApplyAlias(node, context);
}
public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
_builder.Append(node);
}
public void Visit(ExistsNode node)
{
node.Field = GetCustomFieldName(node.Field) ?? node.Field;
}
public void Visit(ExistsNode node, IQueryVisitorContext context)
{
node.Field = GetCustomFieldName(node.Field) ?? node.Field;
}
public override Task VisitAsync(ExistsNode node, IQueryVisitorContext context)
{
node.Field = GetCustomFieldName(node.Field, Array.Empty <string>());
return(Task.CompletedTask);
}
public Task VisitAsync(ExistsNode node, IQueryVisitorContext context)
{
return(Visitor.VisitAsync(node, context));
}
public override void Visit(ExistsNode node, IQueryVisitorContext context)
{
AddField(node, context);
}
internal static NodeInfo Create(ExistsNode node)
{
return new NodeInfo(NodeType.Exists, string.Empty);
}
internal static ReteNode Create(ExistsNode node)
{
return(new ReteNode(node.Id, NodeType.Exists, rules: node.NodeInfo.Rules));
}
protected internal virtual void VisitExistsNode(TContext builder, ExistsNode node)
{
VisitBetaNode(builder, node);
}
public virtual void Visit(ExistsNode node, IQueryVisitorContext context)
{
}
public static QueryBase GetDefaultQuery(this ExistsNode node, IQueryVisitorContext context)
{
return(new ExistsQuery {
Field = node.Field
});
}
public virtual Task VisitAsync(ExistsNode node, IQueryVisitorContext context)
{
Visit(node, context);
return(Task.CompletedTask);
}
protected internal virtual void VisitExistsNode(TContext context, ExistsNode node)
{
VisitBetaNode(context, node);
}
public void Visit(ExistsNode node)
{
node.Field = GetCustomFieldName(node.Field) ?? node.Field;
}
internal static NodeInfo Create(ExistsNode node)
{
return(new NodeInfo(NodeType.Exists, string.Empty));
}
public virtual bool Visit <T, TProperty>(ExistsNode <T, TProperty> node, Func <RuntimeVisitor, bool> next)
where T : class
where TProperty : class, IEnumerable
{
return(next(this));
}