internal string AddTable(WQueryDerivedTable table)
{
string alias = table.Alias.Value;
this.NonFreeTables[alias] = new NonFreeTable(table);
this.TableInputDependency[alias] = new HashSet <string>();
this.NonFreeTables[alias].Position = this.TableInputDependency.Count;
return(alias);
}
public AggregationBlock(WQueryDerivedTable table)
{
this.RootTableAlias = table.Alias.Value;
this.GraphPattern = new MatchGraph();
this.NonFreeTables = new Dictionary <string, NonFreeTable>();
this.NonFreeTables[RootTableAlias] = new NonFreeTable(table);
this.TableInputDependency = new Dictionary <string, HashSet <string> >();
this.TableInputDependency[RootTableAlias] = new HashSet <string>();
this.NonFreeTables[RootTableAlias].Position = this.TableInputDependency.Count;
}
private WTableReference ParseTableReference(TableReference tabRef)
{
if (tabRef == null)
{
return null;
}
var tabRefWithAlias = tabRef as TableReferenceWithAlias;
if (tabRefWithAlias!=null && tabRefWithAlias.Alias!=null &&
GraphViewKeywords._keywords.Contains(tabRefWithAlias.Alias.Value))
{
var token = _tokens[tabRefWithAlias.Alias.FirstTokenIndex];
throw new SyntaxErrorException(token.Line, tabRefWithAlias.Alias.Value,
"System restricted Name cannot be used");
}
switch (tabRef.GetType().Name)
{
case "NamedTableReference":
{
var oref = tabRef as NamedTableReference;
if (oref.SchemaObject.BaseIdentifier.QuoteType == QuoteType.NotQuoted &&
(oref.SchemaObject.BaseIdentifier.Value[0] == '@' ||
oref.SchemaObject.BaseIdentifier.Value[0] == '#'))
{
var pref = new WSpecialNamedTableReference
{
Alias = oref.Alias,
TableHints = new List<WTableHint>(),
FirstTokenIndex = oref.FirstTokenIndex,
LastTokenIndex = oref.LastTokenIndex,
TableObjectName = ParseSchemaObjectName(oref.SchemaObject),
};
if (oref.TableHints != null)
{
foreach (var hint in oref.TableHints)
pref.TableHints.Add(ParseTableHint(hint));
}
return pref;
}
else
{
var pref = new WNamedTableReference
{
Alias = oref.Alias,
TableHints = new List<WTableHint>(),
FirstTokenIndex = oref.FirstTokenIndex,
LastTokenIndex = oref.LastTokenIndex,
TableObjectName = ParseSchemaObjectName(oref.SchemaObject),
};
if (oref.TableHints != null)
{
foreach (var hint in oref.TableHints)
pref.TableHints.Add(ParseTableHint(hint));
}
return pref;
}
}
case "QueryDerivedTable":
{
var oref = tabRef as QueryDerivedTable;
var pref = new WQueryDerivedTable
{
QueryExpr = ParseSelectQueryStatement(oref.QueryExpression),
Alias = oref.Alias,
Columns = oref.Columns,
FirstTokenIndex = oref.FirstTokenIndex,
LastTokenIndex = oref.LastTokenIndex,
};
return pref;
}
case "SchemaObjectFunctionTableReference":
{
var oref = tabRef as SchemaObjectFunctionTableReference;
var pref = new WSchemaObjectFunctionTableReference
{
Alias = oref.Alias,
Columns = oref.Columns,
SchemaObject = ParseSchemaObjectName(oref.SchemaObject),
FirstTokenIndex = oref.FirstTokenIndex,
LastTokenIndex = oref.LastTokenIndex
};
if (oref.Parameters == null)
return pref;
pref.Parameters = new List<WScalarExpression>();
foreach (var param in oref.Parameters)
pref.Parameters.Add(ParseScalarExpression(param));
return pref;
}
case "QualifiedJoin":
{
var oref = tabRef as QualifiedJoin;
var pref = new WQualifiedJoin
{
FirstTableRef = ParseTableReference(oref.FirstTableReference),
SecondTableRef = ParseTableReference(oref.SecondTableReference),
QualifiedJoinType = oref.QualifiedJoinType,
JoinHint = oref.JoinHint,
JoinCondition = ParseBooleanExpression(oref.SearchCondition),
FirstTokenIndex = oref.FirstTokenIndex,
LastTokenIndex = oref.LastTokenIndex,
};
return pref;
}
case "UnqualifiedJoin":
{
var oref = tabRef as UnqualifiedJoin;
var pref = new WUnqualifiedJoin
{
FirstTableRef = ParseTableReference(oref.FirstTableReference),
SecondTableRef = ParseTableReference(oref.SecondTableReference),
UnqualifiedJoinType = oref.UnqualifiedJoinType,
FirstTokenIndex = oref.FirstTokenIndex,
LastTokenIndex = oref.LastTokenIndex,
};
return pref;
}
case "JoinParenthesisTableReference":
{
var ptab = tabRef as JoinParenthesisTableReference;
var wptab = new WParenthesisTableReference
{
Table = ParseTableReference(ptab.Join),
FirstTokenIndex = ptab.FirstTokenIndex,
LastTokenIndex = ptab.LastTokenIndex,
};
return wptab;
}
default:
return null;
}
}
public virtual void Visit(WQueryDerivedTable node)
{
node.AcceptChildren(this);
}
public virtual void Visit(WQueryDerivedTable node)
{
node.AcceptChildren(this);
}
public override void Visit(WQueryDerivedTable node)
{
var name = node.Alias;
_results.AddNodeTable(name.Value, node);
}
public override void Visit(WQueryDerivedTable node)
{
var name = node.Alias;
_results.AddNodeTable(name.Value, node);
}
public override void Visit(WQueryDerivedTable node)
{
blocks.Add(new AggregationBlock(node));
}
public override void Visit(WQueryDerivedTable node)
{
nonVertexTableList.Add(node);
}
