internal void DropProperties(GremlinVariable belongToVariable, List <string> PropertyKeys)
{
List <object> properties = new List <object>();
foreach (var propertyKey in PropertyKeys)
{
properties.Add(propertyKey);
properties.Add(null);
}
if (PropertyKeys.Count == 0)
{
properties.Add(GremlinKeyword.Star);
properties.Add(null);
}
GremlinUpdatePropertiesVariable dropVariable = null;
switch (belongToVariable.GetVariableType())
{
case GremlinVariableType.Vertex:
dropVariable = new GremlinUpdateVertexPropertiesVariable(belongToVariable, properties);
break;
case GremlinVariableType.Edge:
dropVariable = new GremlinUpdateEdgePropertiesVariable(belongToVariable, properties);
break;
}
VariableList.Add(dropVariable);
TableReferences.Add(dropVariable);
SetPivotVariable(dropVariable);
}
internal virtual void Property(GremlinToSqlContext currentContext, List <object> properties)
{
GremlinUpdatePropertiesVariable updateVariable;
switch (GetVariableType())
{
case GremlinVariableType.Vertex:
updateVariable =
currentContext.VariableList.Find(
p =>
(p is GremlinUpdateVertexPropertiesVariable) &&
(p as GremlinUpdateVertexPropertiesVariable).VertexVariable == this) as GremlinUpdateVertexPropertiesVariable;
if (updateVariable == null)
{
updateVariable = new GremlinUpdateVertexPropertiesVariable(this, properties);
currentContext.VariableList.Add(updateVariable);
currentContext.TableReferences.Add(updateVariable);
}
else
{
updateVariable.Property(currentContext, properties);
}
break;
case GremlinVariableType.Edge:
updateVariable =
currentContext.VariableList.Find(
p =>
(p is GremlinUpdateEdgePropertiesVariable) &&
(p as GremlinUpdateEdgePropertiesVariable).EdgeVariable == this) as GremlinUpdateEdgePropertiesVariable;
if (updateVariable == null)
{
updateVariable = new GremlinUpdateEdgePropertiesVariable(this, properties);
currentContext.VariableList.Add(updateVariable);
currentContext.TableReferences.Add(updateVariable);
}
else
{
updateVariable.Property(currentContext, properties);
}
break;
default:
throw new Exception();
}
}