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public static ExpressionUnbound ( string expr ) : |
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| expr | string | |
| return | ||
internal override void Bind(DataTable table, List <DataColumn> list)
{
base.BindTable(table);
this.column = null;
this.relation = null;
if (table == null)
{
throw ExprException.ExpressionUnbound(this.ToString());
}
DataRelationCollection parentRelations = table.ParentRelations;
if (this.relationName == null)
{
if (parentRelations.Count > 1)
{
throw ExprException.UnresolvedRelation(table.TableName, this.ToString());
}
this.relation = parentRelations[0];
}
else
{
this.relation = parentRelations[this.relationName];
}
if (this.relation == null)
{
throw ExprException.BindFailure(this.relationName);
}
DataTable parentTable = this.relation.ParentTable;
this.column = parentTable.Columns[this.columnName];
if (this.column == null)
{
throw ExprException.UnboundName(this.columnName);
}
int num = 0;
while (num < list.Count)
{
DataColumn column = list[num];
if (this.column == column)
{
break;
}
num++;
}
if (num >= list.Count)
{
list.Add(this.column);
}
AggregateNode.Bind(this.relation, list);
}
internal override object Eval(DataRow row, DataRowVersion version)
{
if ((this.column == null) || (this.relation == null))
{
throw ExprException.ExpressionUnbound(this.ToString());
}
DataRow parentRow = row.GetParentRow(this.relation, version);
if (parentRow == null)
{
return(DBNull.Value);
}
return(parentRow[this.column, parentRow.HasVersion(version) ? version : DataRowVersion.Current]);
}
internal override object Eval(DataRow row, DataRowVersion version)
{
if (_column == null || _relation == null)
{
throw ExprException.ExpressionUnbound(ToString());
}
DataRow parent = row.GetParentRow(_relation, version);
if (parent == null)
{
return(DBNull.Value);
}
return(parent[_column, parent.HasVersion(version) ? version : DataRowVersion.Current]);
}
internal override object Eval(DataRow row, DataRowVersion version)
{
#if DEBUG
if (CompModSwitches.LookupNode.TraceVerbose)
{
Debug.WriteLine("Eval " + this.ToString());
}
#endif
if (table == null || column == null || relation == null)
{
throw ExprException.ExpressionUnbound(this.ToString());
}
DataRow parent = row.GetParentRow(relation, version);
if (parent == null)
{
return(DBNull.Value);
}
return(parent[column, parent.HasVersion(version) ? version : DataRowVersion.Current]); // haroona : Bug 76154
}
internal override void Bind(DataTable table, ArrayList list)
{
#if DEBUG
if (CompModSwitches.LookupNode.TraceVerbose)
{
Debug.WriteLine("Binding lookup column " + this.ToString());
}
#endif
if (table == null)
{
throw ExprException.ExpressionUnbound(this.ToString());
}
// First find parent table
DataRelationCollection relations;
relations = table.ParentRelations;
if (relationName == null)
{
// must have one and only one relation
if (relations.Count > 1)
{
throw ExprException.UnresolvedRelation(table.TableName, this.ToString());
}
relation = relations[0];
}
else
{
relation = relations[relationName];
}
Debug.Assert(relation != null, "The relation should be resolved (bound) at this point.");
this.table = relation.ParentTable;
Debug.Assert(relation != null, "Invalid relation: no parent table.");
Debug.Assert(columnName != null, "All Lookup expressions have columnName set.");
this.column = this.table.Columns[columnName];
if (column == null)
{
throw ExprException.UnboundName(columnName);
}
// add column to the dependency list
Debug.Assert(column != null, "Failed to bind column " + columnName);
int i;
for (i = 0; i < list.Count; i++)
{
// walk the list, check if the current column already on the list
DataColumn dataColumn = (DataColumn)list[i];
if (column == dataColumn)
{
#if DEBUG
if (CompModSwitches.LookupNode.TraceVerbose)
{
Debug.WriteLine("the column found in the dependency list");
}
#endif
break;
}
}
if (i >= list.Count)
{
#if DEBUG
if (CompModSwitches.LookupNode.TraceVerbose)
{
Debug.WriteLine("Adding column to our dependency list: " + column.ColumnName);
}
#endif
list.Add(column);
}
}
internal override void Bind(DataTable table, List <DataColumn> list)
{
BindTable(table);
_column = null; // clear for rebinding (if original binding was valid)
_relation = null;
if (table == null)
{
throw ExprException.ExpressionUnbound(ToString());
}
// First find parent table
DataRelationCollection relations;
relations = table.ParentRelations;
if (_relationName == null)
{
// must have one and only one relation
if (relations.Count > 1)
{
throw ExprException.UnresolvedRelation(table.TableName, ToString());
}
_relation = relations[0];
}
else
{
_relation = relations[_relationName];
}
if (null == _relation)
{
throw ExprException.BindFailure(_relationName); // this operation is not clone specific, throw generic exception
}
DataTable parentTable = _relation.ParentTable;
Debug.Assert(_relation != null, "Invalid relation: no parent table.");
Debug.Assert(_columnName != null, "All Lookup expressions have columnName set.");
_column = parentTable.Columns[_columnName];
if (_column == null)
{
throw ExprException.UnboundName(_columnName);
}
// add column to the dependency list
int i;
for (i = 0; i < list.Count; i++)
{
// walk the list, check if the current column already on the list
DataColumn dataColumn = list[i];
if (_column == dataColumn)
{
break;
}
}
if (i >= list.Count)
{
list.Add(_column);
}
AggregateNode.Bind(_relation, list);
}
internal override void Bind(DataTable table, List <DataColumn> list)
{
BindTable(table);
column = null; // clear for rebinding (if original binding was valid)
relation = null;
if (table == null)
{
throw ExprException.ExpressionUnbound(this.ToString());
}
// First find parent table
DataRelationCollection relations;
relations = table.ParentRelations;
if (relationName == null)
{
// must have one and only one relation
if (relations.Count > 1)
{
throw ExprException.UnresolvedRelation(table.TableName, this.ToString());
}
relation = relations[0];
}
else
{
relation = relations[relationName];
}
if (null == relation)
{
throw ExprException.BindFailure(relationName);// WebData 112162: this operation is not clne specific, throw generic exception
}
DataTable parentTable = relation.ParentTable;
Debug.Assert(relation != null, "Invalid relation: no parent table.");
Debug.Assert(columnName != null, "All Lookup expressions have columnName set.");
this.column = parentTable.Columns[columnName];
if (column == null)
{
throw ExprException.UnboundName(columnName);
}
// add column to the dependency list
int i;
for (i = 0; i < list.Count; i++)
{
// walk the list, check if the current column already on the list
DataColumn dataColumn = list[i];
if (column == dataColumn)
{
break;
}
}
if (i >= list.Count)
{
list.Add(column);
}
// SQLBU 383715: Staleness of computed values in expression column as the relationship end columns are not being added to the dependent column list.
AggregateNode.Bind(relation, list);
}
