public void AddNodeTable(string name, WTableReferenceWithAlias tableName)
{
if (_nodeTableDictionary.ContainsKey(name) || _edgeDictionary.ContainsKey(name))
{
throw new GraphViewException("Duplicate Alias");
}
_nodeTableDictionary.Add(name, tableName);
}
public NonFreeTable(WTableReferenceWithAlias tableReference)
{
this.NodeAlias = tableReference.Alias.Value;
this.TableReference = tableReference;
this.Cardinality = 1.0;
}
public virtual void Visit(WTableReferenceWithAlias node)
{
node.AcceptChildren(this);
}
public void AddNodeTable(string name, WTableReferenceWithAlias tableName)
{
if (_nodeTableDictionary.ContainsKey(name) || _edgeDictionary.ContainsKey(name))
throw new GraphViewException("Duplicate Alias");
_nodeTableDictionary.Add(name, tableName);
}
public virtual void Visit(WTableReferenceWithAlias node)
{
node.AcceptChildren(this);
}
/// <summary>
/// Checks whether a table reference in the FROM clause is a node table.
/// In GraphView's SELECT statement, a table reference in the FROM clause
/// could also be a regular table.
/// </summary>
/// <param name="table">The table reference in the FROM clause</param>
/// <returns>True if the table reference is a node table; otherwise, false.</returns>
private bool IsNodeTable(WTableReferenceWithAlias table)
{
var namedTable = table as WNamedTableReference;
if (namedTable == null)
return false;
var tableschema = namedTable.TableObjectName.SchemaIdentifier != null
? namedTable.TableObjectName.SchemaIdentifier.Value
: "dbo";
var tableName = namedTable.TableObjectName.BaseIdentifier.Value;
return
_graphMetaData.ColumnsOfNodeTables.Keys.Contains(
new Tuple<string, string>(tableschema.ToLower(CultureInfo.CurrentCulture),
tableName.ToLower(CultureInfo.CurrentCulture)));
}