private void AnalyzePrefixedColumnReference(StatementGrammarNode effectiveTerminal)
{
IsNewExpressionWithInvalidGrammar = String.Equals(effectiveTerminal.Id, Terminals.SchemaIdentifier) && effectiveTerminal.FollowingTerminal != null && String.Equals(effectiveTerminal.FollowingTerminal.Id, Terminals.ObjectIdentifier);
var isObjectAlias = String.Equals(effectiveTerminal.Id, Terminals.ObjectAlias);
if (IsNewExpressionWithInvalidGrammar || isObjectAlias)
{
ReferenceIdentifier =
new ReferenceIdentifier
{
Identifier = effectiveTerminal,
CursorPosition = CursorPosition
};
ResolveCurrentTerminalValue(effectiveTerminal);
return;
}
var prefixedColumnReference = effectiveTerminal.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.Expression), NonTerminals.PrefixedColumnReference);
var prefix = effectiveTerminal.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.Expression) && !String.Equals(n.Id, NonTerminals.AliasedExpressionOrAllTableColumns), NonTerminals.Prefix);
var lookupNode = prefixedColumnReference ?? prefix;
if (lookupNode == null && effectiveTerminal.Id.In(Terminals.Asterisk, Terminals.User, Terminals.SystemDate, Terminals.Level, Terminals.RowIdPseudocolumn, Terminals.Null))
{
lookupNode = effectiveTerminal.ParentNode;
}
if (lookupNode == null && effectiveTerminal.Id.IsIdentifier())
{
lookupNode = effectiveTerminal.ParentNode;
}
if (lookupNode == null)
{
return;
}
var identifiers = lookupNode.GetPathFilterDescendants(n => !String.Equals(n.Id, NonTerminals.Expression) && !String.Equals(n.Id, NonTerminals.AliasedExpressionOrAllTableColumns), Terminals.SchemaIdentifier, Terminals.ObjectIdentifier, Terminals.Identifier, Terminals.BindVariableIdentifier, Terminals.Asterisk, Terminals.User, Terminals.SystemDate, Terminals.Level, Terminals.RowIdPseudocolumn, Terminals.Null).ToList();
ReferenceIdentifier = BuildReferenceIdentifier(identifiers);
}
private void AnalyzeDataType(StatementGrammarNode effectiveTerminal)
{
var dataTypeNode = effectiveTerminal.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.Expression), NonTerminals.DataType);
if (dataTypeNode == null)
{
return;
}
ReferenceIdentifier = BuildReferenceIdentifier(dataTypeNode.GetDescendants(Terminals.SchemaIdentifier, Terminals.DataTypeIdentifier).ToArray());
}
private void AnalyzeQueryTableExpression(StatementGrammarNode effectiveTerminal)
{
var queryTableExpression = effectiveTerminal.GetPathFilterAncestor(n => !n.Id.In(NonTerminals.InnerTableReference, NonTerminals.QueryBlock), NonTerminals.QueryTableExpression);
if (queryTableExpression == null)
{
return;
}
var identifiers = queryTableExpression.GetPathFilterDescendants(n => !n.Id.In(NonTerminals.Expression, NonTerminals.NestedQuery), Terminals.SchemaIdentifier, Terminals.ObjectIdentifier, Terminals.Identifier).ToArray();
ReferenceIdentifier = BuildReferenceIdentifier(identifiers);
}
public static OracleObjectIdentifier ExtractObjectIdentifier(this StatementGrammarNode node)
{
var queryTableExpression = node.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.FromClause), NonTerminals.QueryTableExpression);
var tableIdentifierNode = queryTableExpression.ChildNodes.SingleOrDefault(n => String.Equals(n.Id, Terminals.ObjectIdentifier));
if (tableIdentifierNode == null)
{
return(OracleObjectIdentifier.Empty);
}
var schemaPrefixNode = queryTableExpression.ChildNodes.SingleOrDefault(n => String.Equals(n.Id, NonTerminals.SchemaPrefix));
schemaPrefixNode = schemaPrefixNode?.ChildNodes.First();
return(OracleObjectIdentifier.Create(schemaPrefixNode, tableIdentifierNode, null));
}
private static LineBreakPosition GetOrderByBreakPosition(StatementGrammarNode node)
{
var expression = node.GetPathFilterAncestor(n => n.Id != NonTerminals.NestedQuery, NonTerminals.Expression);
if (expression != null)
{
return(LineBreakPosition.None);
}
switch (node.Id)
{
case Terminals.Order:
return(LineBreakPosition.BeforeNode);
case Terminals.By:
return(LineBreakPosition.AfterNode);
case Terminals.Comma:
return(LineBreakPosition.AfterNode);
default:
throw new NotSupportedException($"Node '{node.Id}' is not supported. ");
}
}
public static StatementGrammarNode GetParentExpression(this StatementGrammarNode node)
{
return(node?.GetPathFilterAncestor(NodeFilters.BreakAtNestedQueryBlock, NonTerminals.Expression));
}
public static bool IsWithinOrderByClause(this StatementGrammarNode node)
{
return(node.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.Subquery), NonTerminals.OrderByClause) != null);
}
public static bool IsWithinHavingClause(this StatementGrammarNode node)
{
return(node.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.QueryBlock), NonTerminals.HavingClause) != null);
}
public static bool IsWithinSelectClause(this StatementGrammarNode node)
{
var selectListNode = node.GetPathFilterAncestor(n => !String.Equals(n.Id, NonTerminals.QueryBlock), NonTerminals.SelectList);
return(node.Id == Terminals.Select || selectListNode != null);
}
private static LineBreakPosition GetOrderByBreakPosition(StatementGrammarNode node)
{
var expression = node.GetPathFilterAncestor(n => n.Id != NonTerminals.NestedQuery, NonTerminals.Expression);
if (expression != null)
{
return LineBreakPosition.None;
}
switch (node.Id)
{
case Terminals.Order:
return LineBreakPosition.BeforeNode;
case Terminals.By:
return LineBreakPosition.AfterNode;
case Terminals.Comma:
return LineBreakPosition.AfterNode;
default:
throw new NotSupportedException($"Node '{node.Id}' is not supported. ");
}
}
