public override void PopulateForeignRelations(Entity entity)
{
Entity prntEnt;
Entity frnEntity = null;
DS.SchemaReader.ForeignRelationsDataTable tr = new DS.SchemaReader.ForeignRelationsDataTable();
DS.SchemaReaderTableAdapters.ForeignRelationsTableAdapter tra = new DS.SchemaReaderTableAdapters.ForeignRelationsTableAdapter();
tra.Connection = new System.Data.SqlClient.SqlConnection(base.ConnectionString);
tra.FillBy(tr, entity.DBName);
DS.SchemaReader.TABLE_CONSTRAINTSDataTable tc = new DS.SchemaReader.TABLE_CONSTRAINTSDataTable();
DS.SchemaReaderTableAdapters.TABLE_CONSTRAINTSTableAdapter tca = new DS.SchemaReaderTableAdapters.TABLE_CONSTRAINTSTableAdapter();
tca.Connection = new System.Data.SqlClient.SqlConnection(base.ConnectionString);
tca.FillByTableName(tc, entity.DBName);
System.Data.DataRow[] tcrows = tc.Select("CONSTRAINT_TYPE = 'FOREIGN KEY'");
foreach (DS.SchemaReader.TABLE_CONSTRAINTSRow tcr in tcrows)
{
System.Data.DataRow[] trrows = tr.Select("ConstraintName = '" + tcr.CONSTRAINT_NAME + "'");
DS.SchemaReader.ForeignRelationsRow trr = (DS.SchemaReader.ForeignRelationsRow)trrows[0];
string ftab = trr.RefTab;;
prntEnt = entity.Model.EntityCollection.Find(delegate(Entity ent) { return(ent.DBName == ftab); });
// this code assumes that the foreign keys' source is the primary key
// allthough the source could be a unique key
Constraint pk = prntEnt.Constraints.Find(delegate(Constraint c) { return(c.Type == "PRIMARY KEY"); });
Constraint fk = entity.Constraints.Find(delegate(Constraint c) { return(c.Name == tcr.CONSTRAINT_NAME); });
Relation rel = new Relation();
EntityReference child = new EntityReference();
child.Entity = entity;
child.EntityID = entity.EntityID;
// child.EntityName = entity.LogicalName;
rel.ChildEntity = child;
EntityReference parent = new EntityReference();
parent.Entity = prntEnt;
parent.EntityID = prntEnt.EntityID;
// parent.EntityName = prntEnt.LogicalName;
rel.ParentEntity = parent;
RelationReference relref = new RelationReference();
relref.Relation = rel;
relref.ID = System.Guid.NewGuid().ToString();
entity.ParentRelations.Add(relref);
prntEnt.ChildRelations.Add(relref);
rel.ID = relref.ID;
foreach (FieldReference frf in pk.Fields)
{
rel.RelatedFields.Add(frf);
}
foreach (FieldReference pkf in fk.Fields)
{
rel.ForeignFields.Add(pkf);
}
//rel.RelatedEntityID = prntEnt.EntityID;
rel.Type = new RelationType();
rel.Type.Usage = TypeUsage.Parent;
string logical = child.Entity.LogicalName + "." + fk.Fields[0].RelatedField.DBName;
rel.LogicalName = logical;
entity.Model.Relations.Add(rel);
}
}
public override void PopulateForeignRelations(Entity entity)
{
Entity prntEnt;
Entity frnEntity = null;
DS.SchemaReader.ForeignRelationsDataTable tr = new DS.SchemaReader.ForeignRelationsDataTable();
DS.SchemaReaderTableAdapters.ForeignRelationsTableAdapter tra = new DS.SchemaReaderTableAdapters.ForeignRelationsTableAdapter();
tra.Connection = new System.Data.SqlClient.SqlConnection(base.ConnectionString);
tra.FillBy(tr, entity.DBName);
DS.SchemaReader.TABLE_CONSTRAINTSDataTable tc = new DS.SchemaReader.TABLE_CONSTRAINTSDataTable();
DS.SchemaReaderTableAdapters.TABLE_CONSTRAINTSTableAdapter tca = new DS.SchemaReaderTableAdapters.TABLE_CONSTRAINTSTableAdapter();
tca.Connection = new System.Data.SqlClient.SqlConnection(base.ConnectionString);
tca.FillByTableName(tc,entity.DBName);
System.Data.DataRow[] tcrows = tc.Select("CONSTRAINT_TYPE = 'FOREIGN KEY'");
foreach (DS.SchemaReader.TABLE_CONSTRAINTSRow tcr in tcrows)
{
System.Data.DataRow[] trrows = tr.Select("ConstraintName = '" + tcr.CONSTRAINT_NAME + "'");
DS.SchemaReader.ForeignRelationsRow trr = (DS.SchemaReader.ForeignRelationsRow)trrows[0];
string ftab = trr.RefTab; ;
prntEnt = entity.Model.EntityCollection.Find(delegate(Entity ent) { return ent.DBName == ftab; });
// this code assumes that the foreign keys' source is the primary key
// allthough the source could be a unique key
Constraint pk = prntEnt.Constraints.Find(delegate(Constraint c) { return c.Type == "PRIMARY KEY"; });
Constraint fk = entity.Constraints.Find(delegate(Constraint c) { return c.Name == tcr.CONSTRAINT_NAME; });
Relation rel = new Relation();
EntityReference child = new EntityReference();
child.Entity = entity;
child.EntityID = entity.EntityID;
// child.EntityName = entity.LogicalName;
rel.ChildEntity = child;
EntityReference parent = new EntityReference();
parent.Entity = prntEnt;
parent.EntityID = prntEnt.EntityID;
// parent.EntityName = prntEnt.LogicalName;
rel.ParentEntity = parent;
RelationReference relref = new RelationReference();
relref.Relation = rel;
relref.ID = System.Guid.NewGuid().ToString();
entity.ParentRelations.Add(relref);
prntEnt.ChildRelations.Add(relref);
rel.ID = relref.ID;
foreach (FieldReference frf in pk.Fields)
{
rel.RelatedFields.Add(frf);
}
foreach (FieldReference pkf in fk.Fields)
{
rel.ForeignFields.Add(pkf);
}
//rel.RelatedEntityID = prntEnt.EntityID;
rel.Type = new RelationType();
rel.Type.Usage = TypeUsage.Parent;
string logical = child.Entity.LogicalName + "." + fk.Fields[0].RelatedField.DBName;
rel.LogicalName = logical;
entity.Model.Relations.Add(rel);
}
}
