public WDeleteNodeSpecification(WDeleteSpecification deleteSpec)
{
FirstTokenIndex = deleteSpec.FirstTokenIndex;
LastTokenIndex = deleteSpec.LastTokenIndex;
TopRowFilter = deleteSpec.TopRowFilter;
Target = deleteSpec.Target;
WhereClause = deleteSpec.WhereClause;
}
private WSqlStatement ConvertSqlDeleteStatement(WDeleteSpecification sqlDeleteStatement)
{
if (_nodeCount >= _annotations.Count || sqlDeleteStatement.LastTokenIndex < _annotations[_nodeCount].Position)
{
return(sqlDeleteStatement);
}
if (_annotations[_nodeCount] is DeleteNodeAnnotation)
{
_nodeCount++;
return(new WDeleteNodeSpecification(sqlDeleteStatement));
}
else
{
throw new GraphViewException("Cannot assign modification annotations back.");
}
}
private WSqlStatement ParseDeleteStatement(DeleteSpecification delSpec)
{
if (delSpec == null)
return null;
var wdelSpec = new WDeleteSpecification
{
Target = ParseTableReference(delSpec.Target),
FirstTokenIndex = delSpec.FirstTokenIndex,
LastTokenIndex = delSpec.LastTokenIndex
};
//From Clause
if (delSpec.FromClause != null && delSpec.FromClause.TableReferences != null)
{
wdelSpec.FromClause = new WFromClause
{
FirstTokenIndex = delSpec.FromClause.FirstTokenIndex,
LastTokenIndex = delSpec.FromClause.LastTokenIndex,
TableReferences = new List<WTableReference>(delSpec.FromClause.TableReferences.Count)
};
foreach (var pref in delSpec.FromClause.TableReferences.Select(ParseTableReference).Where(pref => pref != null))
{
wdelSpec.FromClause.TableReferences.Add(pref);
}
}
//where clause
if (delSpec.WhereClause != null && delSpec.WhereClause.SearchCondition != null)
{
wdelSpec.WhereClause = new WWhereClause
{
FirstTokenIndex = delSpec.WhereClause.FirstTokenIndex,
LastTokenIndex = delSpec.WhereClause.LastTokenIndex,
SearchCondition = ParseBooleanExpression(delSpec.WhereClause.SearchCondition)
};
}
//top row filter
if (delSpec.TopRowFilter != null)
{
wdelSpec.TopRowFilter = new WTopRowFilter
{
Expression = ParseScalarExpression(delSpec.TopRowFilter.Expression),
Percent = delSpec.TopRowFilter.Percent,
WithTies = delSpec.TopRowFilter.WithTies,
FirstTokenIndex = delSpec.TopRowFilter.FirstTokenIndex,
LastTokenIndex = delSpec.TopRowFilter.LastTokenIndex
};
}
return wdelSpec;
}
public virtual void Visit(WDeleteSpecification node)
{
node.AcceptChildren(this);
}
public virtual void Visit(WDeleteSpecification node)
{
node.AcceptChildren(this);
}
public WDeleteNodeSpecification(WDeleteSpecification deleteSpec)
{
FirstTokenIndex = deleteSpec.FirstTokenIndex;
LastTokenIndex = deleteSpec.LastTokenIndex;
TopRowFilter = deleteSpec.TopRowFilter;
Target = deleteSpec.Target;
WhereClause = deleteSpec.WhereClause;
}
private WSqlStatement ConvertSqlDeleteStatement(WDeleteSpecification sqlDeleteStatement)
{
if (_nodeCount >= _annotations.Count || sqlDeleteStatement.LastTokenIndex < _annotations[_nodeCount].Position)
{
return sqlDeleteStatement;
}
if (_annotations[_nodeCount] is DeleteNodeAnnotation)
{
_nodeCount++;
return new WDeleteNodeSpecification(sqlDeleteStatement);
}
else
{
throw new GraphViewException("Cannot assign modification annotations back.");
}
}