internal static WEdgeColumnReferenceExpression GetEdgeColumnReferenceExpr(GremlinEdgeTableVariable edgeTable)
{
return(new WEdgeColumnReferenceExpression()
{
MultiPartIdentifier = GetMultiPartIdentifier("Edge"),
Alias = edgeTable.GetVariableName(),
MinLength = 1,
MaxLength = 1,
EdgeType = edgeTable.EdgeType
});
}
internal void AddLabelPredicateForEdge(GremlinEdgeTableVariable edgeTable, List <string> edgeLabels)
{
if (edgeLabels.Count == 0)
{
return;
}
List <WBooleanExpression> booleanExprList = new List <WBooleanExpression>();
foreach (var edgeLabel in edgeLabels)
{
var firstExpr = edgeTable.GetVariableProperty(GremlinKeyword.Label).ToScalarExpression();
var secondExpr = SqlUtil.GetValueExpr(edgeLabel);
booleanExprList.Add(SqlUtil.GetEqualBooleanComparisonExpr(firstExpr, secondExpr));
}
AddPredicate(SqlUtil.GetBooleanParenthesisExpr(SqlUtil.ConcatBooleanExprWithOr(booleanExprList)));
}