Add: JoinedTable NavigateForeignKeyTable(string foreignKeyBaseTable) ...

Author: AbelCheng

T4SQLTemplateLibrary/DataAccess/DbParameterBuilder.cs

@@ -8,6 +8,11 @@ public partial class DbParameterBuilder
 	{
 		private readonly DbCommand _DbCommand;
 
+		public DbParameterCollection Parameters
+		{
+			get { return _DbCommand.Parameters; }
+		}
+
 		public DbParameterBuilder(DbCommand dbCommand)
 		{
 			_DbCommand = dbCommand;

T4SQLTemplateLibrary/Databases/SqlServer/Schema Objects/Schemas/T4SQL/Programmability/Stored Procedures/T4SQL.ENGINE_GET_FOREIGN_KEY.sql

@@ -1,7 +1,9 @@
 CREATE PROCEDURE T4SQL.ENGINE_GET_FOREIGN_KEY
 (
-	@inTable_Name	NVARCHAR(64),
-	@outTable_Name	NVARCHAR(128)	OUTPUT
+	@inTable_Name		NVARCHAR(64),
+	@outTable_Schema	NVARCHAR(64)	OUTPUT,
+	@outTable_Name		NVARCHAR(64)	OUTPUT,
+	@outQualified_Name	NVARCHAR(128)	OUTPUT
 )
 AS
 	SET NOCOUNT ON;
@@ -10,7 +12,9 @@ AS
 	SET @tTable_Id	= OBJECT_ID(@inTable_Name);
 
 	SELECT
-		@outTable_Name	= QUOTENAME(S.name) + N'.' + QUOTENAME(T.name)
+		@outTable_Schema	= S.name,
+		@outTable_Name		= T.name,
+		@outTable_Name		= QUOTENAME(S.name) + N'.' + QUOTENAME(T.name)
 	FROM
 		sys.schemas		S,
 		sys.objects		T

T4SQLTemplateLibrary/SqlBuilder/DbPackage.cs

@@ -132,12 +132,16 @@ internal static IEnumerable<DbmsColumn> ListTableColumns(this DbAccess dbAccess,
 		private static void LoadForeignKeys(this DbAccess dbAccess, DbmsRelationTree foreignKeyBaseTable)
 		{
 			const string sp = "GET_FOREIGN_KEY";
+			DbParameter outTable_Schema = null;
 			DbParameter outTable_Name = null;
+			DbParameter outQualified_Name = null;
 
 			dbAccess.ExecuteReader(GetProcedure(sp), parameters =>
 			{
 				parameters.Add("inTable_Name", foreignKeyBaseTable.TableName);
-				outTable_Name = parameters.AddOutput("outTable_Name", 128);
+				outTable_Schema = parameters.AddOutput("outTable_Schema", 64);
+				outTable_Name = parameters.AddOutput("outTable_Name", 64);
+				outQualified_Name = parameters.AddOutput("outQualified_Name", 128);
 			}, reader =>
 			{
 				foreignKeyBaseTable.AddForeignKeyColumn(
@@ -149,7 +153,10 @@ private static void LoadForeignKeys(this DbAccess dbAccess, DbmsRelationTree for
 					reader.Field<bool>("REFERENCED_NULLABLE"));
 			});
 
+			foreignKeyBaseTable.Schema = outTable_Schema.Parameter<string>();
 			foreignKeyBaseTable.TableName = outTable_Name.Parameter<string>();
+			foreignKeyBaseTable.QualifiedName = outQualified_Name.Parameter<string>();
+
 			foreignKeyBaseTable.Columns = ListTableColumns(dbAccess, foreignKeyBaseTable.TableName).ToArray();
 
 			foreach (DbmsForeignKey fk in foreignKeyBaseTable.ForeignKeys)

T4SQLTemplateLibrary/T4SQL.Base/DbmsEnvironment.cs

@@ -20,8 +20,8 @@ public class DbmsEnvironment
 		public Version ProductVersion { get { return _ProductVersion; } }
 		public string ServerName { get { return _ServerName; } }
 
-	//	internal Func<string, IEnumerable<DbmsColumn>> FuncListTableColumns { get { return _fListTableColumns; } }
-	//	internal Func<string, DbmsRelationTree> FuncLoadForeignKeys { get { return _fLoadForeignKeys; } }
+		//	internal Func<string, IEnumerable<DbmsColumn>> FuncListTableColumns { get { return _fListTableColumns; } }
+		//	internal Func<string, DbmsRelationTree> FuncLoadForeignKeys { get { return _fLoadForeignKeys; } }
 
 		public DbmsEnvironment(Func<string, IEnumerable<DbmsColumn>> fListTableColumns,
 			Func<string, DbmsRelationTree> fLoadForeignKeys,
@@ -43,6 +43,12 @@ public IEnumerable<string> ListTableColumns(string tableName, string specificCol
 			else
 				return specificColumns.SplitColumns();
 		}
+
+		public JoinedTable NavigateForeignKeyTable(string foreignKeyBaseTable)
+		{
+			DbmsRelationTree baseTable = _fLoadForeignKeys(foreignKeyBaseTable);
+			return new JoinedTable(baseTable);
+		}
 	}
 }
 

T4SQLTemplateLibrary/T4SQL.Base/MetaData/DbmsForeignKey.cs

@@ -98,6 +98,18 @@ public bool DetectLoopback(string constraintName)		// Call before the constraint
 
 			return false;
 		}
+
+		public bool IsNullable
+		{
+			get
+			{
+				foreach (DbmsColumn fkCol in _ForeignKeyColumns)
+					if (fkCol.IsNullable)
+						return true;
+
+				return false;
+			}
+		}
 	}
 }
 

T4SQLTemplateLibrary/T4SQL.Base/MetaData/DbmsRelationTree.cs

@@ -6,22 +6,36 @@ namespace T4SQL.MetaData
 {
 	public class DbmsRelationTree
 	{
-		private string _nodeTableName;
+		private string _Schema;
+		private string _NodeTableName;
+		private string _QualifiedName;
 		private DbmsForeignKey _ParentForeignKey;
 		private List<DbmsForeignKey> _ForeignKeys;
 		private DbmsColumn[] _Columns;
 
 		public DbmsRelationTree(string tableName, DbmsForeignKey parentForeignKey = null)
 		{
-			_nodeTableName = tableName;
+			_NodeTableName = _QualifiedName = tableName;
 			_ParentForeignKey = parentForeignKey;
 			_ForeignKeys = new List<DbmsForeignKey>();
 		}
 
+		public string Schema
+		{
+			get { return _Schema; }
+			set { _Schema = value; }
+		}
+
 		public string TableName
 		{
-			get { return _nodeTableName; }
-			set { _nodeTableName = value; }
+			get { return _NodeTableName; }
+			set { _NodeTableName = value; }
+		}
+
+		public string QualifiedName
+		{
+			get { return _QualifiedName; }
+			set { _QualifiedName = value; }
 		}
 
 		public DbmsForeignKey ParentForeignKey
@@ -58,13 +72,12 @@ public void AddForeignKeyColumn(string constraintName, string foreignKeyColumn,
 			fk.AddForeignKeyColumn(new DbmsColumn(foreignKeyColumn, foreignKeyNullable), new DbmsColumn(referencedColumn, referencedNullable));
 		}
 
-		private string _Alias;
-		internal string Alias
+		private TableLink _LinkProperty;
+		internal TableLink LinkProperty
 		{
-			get { return _Alias; }
-			set { _Alias = value; }
+			get { return _LinkProperty; }
+			set { _LinkProperty = value; }
 		}
-
 	}
 }