public void SelectStringSqlTest() { Configuration cfg = new Configuration(); ISessionFactory factory = cfg.BuildSessionFactory(); ISessionFactoryImplementor factoryImpl = (ISessionFactoryImplementor) factory; SqlSelectBuilder select = new SqlSelectBuilder(factoryImpl); select.SetSelectClause("column1, column2"); select.SetFromClause("select_test", "select_test_alias"); select.SetOuterJoins( new SqlString(" LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1"), new SqlString(" after.some_field = after.another_field ")); select.SetOrderByClause(new SqlString("column1 DESC")); select.SetWhereClause("select_test_alias", new string[] {"identity_column"}, NHibernateUtil.Int64); SqlString sqlString = select.ToSqlString(); string expectedSql = new StringBuilder().Append("SELECT ") .Append("column1, column2 ") .Append("FROM select_test select_test_alias ") .Append("LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1 ") .Append("WHERE ") .Append("after.some_field = after.another_field") .Append(" AND ") .Append("select_test_alias.identity_column = ? ") .Append("ORDER BY column1 DESC") .ToString(); Assert.AreEqual(expectedSql, sqlString.ToString(), "SQL String"); Assert.AreEqual(1, sqlString.GetParameterCount(), "One parameter"); }
protected SqlString GenerateIdInsertSelect(IQueryable persister, string tableAlias, IASTNode whereClause) { var select = new SqlSelectBuilder(Factory); SelectFragment selectFragment = new SelectFragment(Factory.Dialect) .AddColumns(tableAlias, persister.IdentifierColumnNames, persister.IdentifierColumnNames); select.SetSelectClause(selectFragment.ToFragmentString().Substring(2)); string rootTableName = persister.TableName; SqlString fromJoinFragment = persister.FromJoinFragment(tableAlias, true, false); SqlString whereJoinFragment = persister.WhereJoinFragment(tableAlias, true, false); select.SetFromClause(rootTableName + ' ' + tableAlias + fromJoinFragment); if (whereJoinFragment == null) { whereJoinFragment = SqlString.Empty; } else { whereJoinFragment = whereJoinFragment.Trim(); if (whereJoinFragment.StartsWithCaseInsensitive("and ")) { whereJoinFragment = whereJoinFragment.Substring(4); } } SqlString userWhereClause = SqlString.Empty; if (whereClause.ChildCount != 0) { // If a where clause was specified in the update/delete query, use it to limit the // returned ids here... try { var nodes = new CommonTreeNodeStream(whereClause); var gen = new SqlGenerator(Factory, nodes); gen.whereClause(); userWhereClause = gen.GetSQL().Substring(7); } catch (RecognitionException e) { throw new HibernateException("Unable to generate id select for DML operation", e); } if (whereJoinFragment.Length > 0) { whereJoinFragment.Append(" and "); } } select.SetWhereClause(whereJoinFragment + userWhereClause); var insert = new InsertSelect(); if (Factory.Settings.IsCommentsEnabled) { insert.SetComment("insert-select for " + persister.EntityName + " ids"); } insert.SetTableName(persister.TemporaryIdTableName); insert.SetSelect(select); return insert.ToSqlString(); }
public void SelectStringSqlTest() { Configuration cfg = new Configuration(); ISessionFactory factory = cfg.BuildSessionFactory( ); ISessionFactoryImplementor factoryImpl = (ISessionFactoryImplementor)factory; SqlSelectBuilder select = new SqlSelectBuilder(factoryImpl); select.SetSelectClause("column1, column2"); select.SetFromClause("select_test", "select_test_alias"); select.SetOuterJoins( new SqlString(" LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1"), new SqlString(" LEFT OUTER JOIN after ON select_test_alias.column1 = after.column1") ); select.SetOrderByClause("column1 DESC"); select.SetWhereClause("select_test_alias", new string[] {"identity_column"}, NHibernateUtil.Int64); SqlString sqlString = select.ToSqlString(); string expectedSql = new StringBuilder().Append("SELECT ") .Append("column1, column2 ") .Append("FROM select_test select_test_alias ") .Append("LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1 ") .Append("WHERE select_test_alias.identity_column = :select_test_alias.identity_column ") .Append("LEFT OUTER JOIN after ON select_test_alias.column1 = after.column1 ") .Append("ORDER BY column1 DESC") .ToString(); int numOfParams = 0; Parameter expectedParam = null; foreach(object part in sqlString.SqlParts) { if(part is Parameter) { numOfParams++; expectedParam = (Parameter)part; } } Assert.AreEqual(expectedSql , sqlString.ToString(), "SQL String"); Assert.AreEqual(1, numOfParams, "One parameter"); Parameter firstParam = new Parameter( "identity_column", "select_test_alias", new SqlTypes.Int64SqlType() ); Assert.AreEqual(firstParam.SqlType.DbType, expectedParam.SqlType.DbType, "First Parameter Type"); Assert.AreEqual(firstParam.Name, expectedParam.Name, "First Parameter Name"); }
public virtual object[] GetNaturalIdentifierSnapshot(object id, ISessionImplementor session) { if (!HasNaturalIdentifier) { throw new MappingException("persistent class did not define a natural-id : " + MessageHelper.InfoString(this)); } if (log.IsDebugEnabled) { log.Debug("Getting current natural-id snapshot state for: " + MessageHelper.InfoString(this, id, Factory)); } int[] naturalIdPropertyIndexes = NaturalIdentifierProperties; int naturalIdPropertyCount = naturalIdPropertyIndexes.Length; bool[] naturalIdMarkers = new bool[PropertySpan]; IType[] extractionTypes = new IType[naturalIdPropertyCount]; for (int i = 0; i < naturalIdPropertyCount; i++) { extractionTypes[i] = PropertyTypes[naturalIdPropertyIndexes[i]]; naturalIdMarkers[naturalIdPropertyIndexes[i]] = true; } /////////////////////////////////////////////////////////////////////// // TODO : look at perhaps caching this... SqlSelectBuilder select = new SqlSelectBuilder(Factory); if (Factory.Settings.IsCommentsEnabled) { select.SetComment("get current natural-id state " + EntityName); } select.SetSelectClause(ConcretePropertySelectFragmentSansLeadingComma(RootAlias, naturalIdMarkers)); select.SetFromClause(FromTableFragment(RootAlias) + FromJoinFragment(RootAlias, true, false)); string[] aliasedIdColumns = StringHelper.Qualify(RootAlias, IdentifierColumnNames); SqlString whereClause = new SqlStringBuilder() .Add(StringHelper.Join(new SqlString("=", Parameter.Placeholder, " and "), aliasedIdColumns)) .Add("=").AddParameter() .Add(WhereJoinFragment(RootAlias, true, false)) .ToSqlString(); SqlString sql = select.SetOuterJoins(SqlString.Empty, SqlString.Empty).SetWhereClause(whereClause).ToStatementString(); /////////////////////////////////////////////////////////////////////// object[] snapshot = new object[naturalIdPropertyCount]; using (new SessionIdLoggingContext(session.SessionId)) try { IDbCommand ps = session.Batcher.PrepareCommand(CommandType.Text, sql, IdentifierType.SqlTypes(factory)); IDataReader rs = null; try { IdentifierType.NullSafeSet(ps, id, 0, session); rs = session.Batcher.ExecuteReader(ps); //if there is no resulting row, return null if (!rs.Read()) { return null; } for (int i = 0; i < naturalIdPropertyCount; i++) { snapshot[i] = extractionTypes[i].Hydrate(rs, GetPropertyAliases(string.Empty, naturalIdPropertyIndexes[i]), session, null); if (extractionTypes[i].IsEntityType) { snapshot[i] = extractionTypes[i].ResolveIdentifier(snapshot[i], session, null); } } return snapshot; } finally { session.Batcher.CloseCommand(ps, rs); } } catch (DbException sqle) { var exceptionContext = new AdoExceptionContextInfo { SqlException = sqle, Message = "could not retrieve snapshot: " + MessageHelper.InfoString(this, id, Factory), Sql = sql.ToString(), EntityName = EntityName, EntityId = id }; throw ADOExceptionHelper.Convert(Factory.SQLExceptionConverter, exceptionContext); } }
protected SqlString RenderSelect(int[] tableNumbers, int[] columnNumbers, int[] formulaNumbers) { Array.Sort(tableNumbers); //get 'em in the right order (not that it really matters) //render the where and from parts int drivingTable = tableNumbers[0]; string drivingAlias = GenerateTableAlias(RootAlias, drivingTable); //we *could* regenerate this inside each called method! SqlString where = CreateWhereByKey(drivingTable, drivingAlias); string from = CreateFrom(drivingTable, drivingAlias); //now render the joins JoinFragment jf = CreateJoin(tableNumbers, drivingAlias); //now render the select clause SelectFragment selectFragment = CreateSelect(columnNumbers, formulaNumbers); //now tie it all together SqlSelectBuilder select = new SqlSelectBuilder(Factory); select.SetSelectClause(selectFragment.ToFragmentString().Substring(2)); select.SetFromClause(from); select.SetWhereClause(where); select.SetOuterJoins(jf.ToFromFragmentString, jf.ToWhereFragmentString); if (Factory.Settings.IsCommentsEnabled) { select.SetComment("sequential select " + EntityName); } return select.ToSqlString(); }