public Expression VisitSqlTableReferenceExpression(SqlTableReferenceExpression expression)
{
ArgumentUtility.CheckNotNull("expression", expression);
var tableInfo = new UnresolvedGroupReferenceTableInfo(expression.SqlTable);
var sqlTable = new SqlTable(tableInfo, JoinSemantics.Inner);
FromExpressionInfo = new FromExpressionInfo(sqlTable, new Ordering[0], new SqlTableReferenceExpression(sqlTable), null);
return(expression);
}
protected override Expression VisitConstantExpression(ConstantExpression expression)
{
ArgumentUtility.CheckNotNull("expression", expression);
var itemType = ReflectionUtility.GetItemTypeOfClosedGenericIEnumerable(expression.Type, "from expression");
var sqlTable = _tableGenerator(new UnresolvedTableInfo(itemType));
var sqlTableReferenceExpression = new SqlTableReferenceExpression(sqlTable);
FromExpressionInfo = new FromExpressionInfo(sqlTable, new Ordering[0], sqlTableReferenceExpression, null);
return(sqlTableReferenceExpression);
}
protected override Expression VisitMemberExpression(MemberExpression expression)
{
ArgumentUtility.CheckNotNull("expression", expression);
var preparedMemberExpression = (MemberExpression)TranslateExpression(expression, Context, Stage, MethodCallTransformerProvider);
var joinInfo = new UnresolvedCollectionJoinInfo(preparedMemberExpression.Expression, preparedMemberExpression.Member);
var joinedTable = new SqlJoinedTable(joinInfo, JoinSemantics.Inner);
var oldStyleJoinedTable = _tableGenerator(joinedTable);
var sqlTableReferenceExpression = new SqlTableReferenceExpression(oldStyleJoinedTable);
FromExpressionInfo = new FromExpressionInfo(
oldStyleJoinedTable, new Ordering[0], sqlTableReferenceExpression, new JoinConditionExpression(joinedTable));
return(sqlTableReferenceExpression);
}
public void AddPreparedFromExpression(FromExpressionInfo fromExpressionInfo)
{
ArgumentUtility.CheckNotNull("fromExpressionInfo", fromExpressionInfo);
if (fromExpressionInfo.WhereCondition != null)
{
SqlStatementBuilder.AddWhereCondition(fromExpressionInfo.WhereCondition);
}
foreach (var ordering in fromExpressionInfo.ExtractedOrderings)
{
SqlStatementBuilder.Orderings.Add(ordering);
}
SqlStatementBuilder.SqlTables.Add(fromExpressionInfo.SqlTable);
}
protected override Expression VisitQuerySourceReference(QuerySourceReferenceExpression expression)
{
var groupJoinClause = expression.ReferencedQuerySource as GroupJoinClause;
if (groupJoinClause != null)
{
var fromExpressionInfo = AnalyzeFromExpression(
groupJoinClause.JoinClause.InnerSequence,
Stage,
_generator,
MethodCallTransformerProvider,
Context,
_tableGenerator,
_orderingExtractionPolicy);
Context.AddExpressionMapping(new QuerySourceReferenceExpression(groupJoinClause.JoinClause), fromExpressionInfo.ItemSelector);
var whereCondition =
Stage.PrepareWhereExpression(
Expression.Equal(groupJoinClause.JoinClause.OuterKeySelector, groupJoinClause.JoinClause.InnerKeySelector), Context);
if (fromExpressionInfo.WhereCondition != null)
{
whereCondition = Expression.AndAlso(fromExpressionInfo.WhereCondition, whereCondition);
}
FromExpressionInfo = new FromExpressionInfo(
fromExpressionInfo.SqlTable,
fromExpressionInfo.ExtractedOrderings.ToArray(),
fromExpressionInfo.ItemSelector,
whereCondition);
return(new SqlTableReferenceExpression(fromExpressionInfo.SqlTable));
}
return(base.VisitQuerySourceReference(expression));
}
public void AddPreparedFromExpression_NoOrderings ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable ();
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new Ordering[0], new SqlTableReferenceExpression (sqlTable), null);
_visitor.SqlStatementBuilder.Orderings.Clear ();
_visitor.AddPreparedFromExpression (preparedFromExpressionInfo);
Assert.That (_visitor.SqlStatementBuilder.Orderings.Count, Is.EqualTo (0));
}
public void AddJoinClause ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable();
var preparedExpression = new SqlTableReferenceExpression (sqlTable);
var joinClause = ExpressionHelper.CreateJoinClause<Cook>();
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new Ordering[] { }, new SqlTableReferenceExpression (sqlTable), null);
_stageMock
.Expect (
mock =>
mock.PrepareFromExpression (
Arg<Expression>.Matches (e => e == joinClause.InnerSequence),
Arg<ISqlPreparationContext>.Matches (c => c != _context),
Arg < Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (preparedFromExpressionInfo);
_stageMock
.Expect (
mock =>
mock.PrepareWhereExpression (
Arg<Expression>.Matches (
e => ((BinaryExpression) e).Left == joinClause.OuterKeySelector && ((BinaryExpression) e).Right == joinClause.InnerKeySelector),
Arg<ISqlPreparationContext>.Matches (c => c != _context)))
.Return (preparedExpression);
_stageMock.Replay();
var result = _visitor.AddJoinClause (joinClause);
_stageMock.VerifyAllExpectations();
Assert.That (result, Is.SameAs (sqlTable));
Assert.That (_visitor.SqlStatementBuilder.WhereCondition, Is.SameAs (preparedExpression));
}
public void AddPreparedFromExpression (FromExpressionInfo fromExpressionInfo)
{
ArgumentUtility.CheckNotNull ("fromExpressionInfo", fromExpressionInfo);
if (fromExpressionInfo.WhereCondition != null)
SqlStatementBuilder.AddWhereCondition (fromExpressionInfo.WhereCondition);
foreach (var ordering in fromExpressionInfo.ExtractedOrderings)
SqlStatementBuilder.Orderings.Add (ordering);
SqlStatementBuilder.SqlTables.Add (fromExpressionInfo.SqlTable);
}
protected override Expression VisitQuerySourceReferenceExpression (QuerySourceReferenceExpression expression)
{
var groupJoinClause = expression.ReferencedQuerySource as GroupJoinClause;
if (groupJoinClause != null)
{
var fromExpressionInfo = AnalyzeFromExpression (
groupJoinClause.JoinClause.InnerSequence,
Stage,
_generator,
MethodCallTransformerProvider,
Context,
_tableGenerator);
Context.AddExpressionMapping (new QuerySourceReferenceExpression (groupJoinClause.JoinClause), fromExpressionInfo.ItemSelector);
var whereCondition =
Stage.PrepareWhereExpression (
Expression.Equal (groupJoinClause.JoinClause.OuterKeySelector, groupJoinClause.JoinClause.InnerKeySelector), Context);
if (fromExpressionInfo.WhereCondition != null)
whereCondition = Expression.AndAlso (fromExpressionInfo.WhereCondition, whereCondition);
FromExpressionInfo = new FromExpressionInfo (
fromExpressionInfo.SqlTable,
fromExpressionInfo.ExtractedOrderings.ToArray(),
fromExpressionInfo.ItemSelector,
whereCondition);
return new SqlTableReferenceExpression (fromExpressionInfo.SqlTable);
}
return base.VisitQuerySourceReferenceExpression (expression);
}
public void HandleResultOperator_GroupByAfterTopExpression ()
{
var topExpression = Expression.Constant ("top");
_sqlStatementBuilder.TopExpression = topExpression;
var keySelector = new SqlColumnDefinitionExpression(typeof(string), "c", "Name", false);
var elementSelector = Expression.Constant ("elementSelector");
var resultOperator = new GroupResultOperator ("itemName", keySelector, elementSelector);
var originalStatement = _sqlStatementBuilder.GetSqlStatement ();
var originalDataInfo = _sqlStatementBuilder.DataInfo;
var fakeFromExpressionInfo = new FromExpressionInfo (
new SqlTable (new ResolvedSubStatementTableInfo("sc", originalStatement), JoinSemantics.Inner), new Ordering[0], elementSelector, null);
_stageMock
.Expect (mock => mock.PrepareResultOperatorItemExpression (keySelector, _context))
.Return (keySelector);
_stageMock
.Expect (mock => mock.PrepareResultOperatorItemExpression (elementSelector, _context))
.Return (elementSelector);
_stageMock
.Expect (
mock => mock.PrepareFromExpression (Arg<Expression>.Is.Anything, Arg.Is (_context), Arg<Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (fakeFromExpressionInfo)
.WhenCalled (mi =>
{
var fromExpression = (Expression) mi.Arguments[0];
CheckExpressionMovedIntoSubStatement (fromExpression, originalStatement);
});
_handler.HandleResultOperator (resultOperator, _sqlStatementBuilder, _generator, _stageMock, _context);
_stageMock.VerifyAllExpectations();
Assert.That (_sqlStatementBuilder.GroupByExpression, Is.SameAs (keySelector));
Assert.That (_sqlStatementBuilder.SqlTables.Count, Is.EqualTo (1));
Assert.That (_sqlStatementBuilder.SqlTables[0], Is.SameAs (fakeFromExpressionInfo.SqlTable));
Assert.That (_sqlStatementBuilder.DataInfo, Is.Not.SameAs (originalDataInfo));
Assert.That (
_sqlStatementBuilder.DataInfo.DataType,
Is.EqualTo (typeof (IQueryable<>).MakeGenericType (typeof (IGrouping<,>).MakeGenericType (typeof (string), typeof (string)))));
}
public void VisitMainFromClause_CreatesFromExpression ()
{
var preparedSqlTable = SqlStatementModelObjectMother.CreateSqlTable();
var preparedFromExpressionInfo = new FromExpressionInfo (
preparedSqlTable, new Ordering[] { }, new SqlTableReferenceExpression (preparedSqlTable), null);
_stageMock
.Expect (
mock => mock.PrepareFromExpression (
Arg<Expression>.Matches (e => e == _mainFromClause.FromExpression),
Arg<ISqlPreparationContext>.Matches (c => c != _context),
Arg<Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (preparedFromExpressionInfo);
_stageMock.Replay();
_visitor.VisitMainFromClause (_mainFromClause, _queryModel);
_stageMock.VerifyAllExpectations();
Assert.That (_visitor.SqlStatementBuilder.SqlTables, Is.EqualTo (new[] { preparedSqlTable }));
Assert.That (
((SqlTableReferenceExpression) _visitor.Context.GetExpressionMapping (new QuerySourceReferenceExpression (_mainFromClause))).SqlTable,
Is.SameAs (preparedSqlTable));
}
protected override Expression VisitMemberExpression (MemberExpression expression)
{
ArgumentUtility.CheckNotNull ("expression", expression);
var preparedMemberExpression = (MemberExpression) TranslateExpression (expression, Context, Stage, MethodCallTransformerProvider);
var joinInfo = new UnresolvedCollectionJoinInfo (preparedMemberExpression.Expression, preparedMemberExpression.Member);
var joinedTable = new SqlJoinedTable (joinInfo, JoinSemantics.Inner);
var oldStyleJoinedTable = _tableGenerator (joinedTable);
var sqlTableReferenceExpression = new SqlTableReferenceExpression (oldStyleJoinedTable);
FromExpressionInfo = new FromExpressionInfo (
oldStyleJoinedTable, new Ordering[0], sqlTableReferenceExpression, new JoinConditionExpression (joinedTable));
return sqlTableReferenceExpression;
}
public void AddPreparedFromExpression_OrderingIsAdded ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable ();
var ordering = new Ordering(Expression.Constant("order"), OrderingDirection.Asc);
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new[] { ordering }, new SqlTableReferenceExpression (sqlTable), null);
_visitor.SqlStatementBuilder.Orderings.Clear ();
_visitor.AddPreparedFromExpression (preparedFromExpressionInfo);
Assert.That (_visitor.SqlStatementBuilder.Orderings.Count, Is.EqualTo (1));
Assert.That (_visitor.SqlStatementBuilder.Orderings[0], Is.SameAs (ordering));
}
public void AddQuerySource ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable();
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new Ordering[] { }, new SqlTableReferenceExpression (sqlTable), null);
_stageMock
.Expect (
mock =>
mock.PrepareFromExpression (
Arg.Is (_mainFromClause.FromExpression),
Arg<ISqlPreparationContext>.Matches (c => c != _context),
Arg<Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (preparedFromExpressionInfo)
.WhenCalled (mi =>
{
var tableCreator = (Func<ITableInfo, SqlTable>) mi.Arguments[2];
var sampleTableInfo = new UnresolvedTableInfo (typeof (Cook));
var table = tableCreator (sampleTableInfo);
Assert.That (table, Is.TypeOf (typeof (SqlTable)));
Assert.That (((SqlTable) table).TableInfo, Is.SameAs (sampleTableInfo));
Assert.That (table.JoinSemantics, Is.EqualTo (JoinSemantics.Inner));
});
_stageMock.Replay();
var result = _visitor.AddQuerySource (_mainFromClause, _mainFromClause.FromExpression);
_stageMock.VerifyAllExpectations();
Assert.That (result, Is.SameAs (sqlTable));
Assert.That (_visitor.Context.GetExpressionMapping (new QuerySourceReferenceExpression (_mainFromClause)), Is.Not.Null);
}
public void VisitJoinClause_CreatesWhereCondition ()
{
var joinClause = ExpressionHelper.CreateJoinClause<Cook>();
var preparedSqlTable = SqlStatementModelObjectMother.CreateSqlTable();
var preparedFromExpressionInfo = new FromExpressionInfo (
preparedSqlTable, new Ordering[] { }, new SqlTableReferenceExpression (preparedSqlTable), null);
var fakeWhereCondition = Expression.Constant (1);
_stageMock
.Expect (
mock =>
mock.PrepareFromExpression (
Arg<Expression>.Matches (e => e == joinClause.InnerSequence),
Arg<ISqlPreparationContext>.Is.Anything,
Arg<Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (preparedFromExpressionInfo);
_stageMock
.Expect (
mock =>
mock.PrepareWhereExpression (
Arg<Expression>.Is.Anything,
Arg<ISqlPreparationContext>.Matches (c => c != _context)))
.Return (fakeWhereCondition);
_stageMock.Replay();
_visitor.VisitJoinClause (joinClause, _queryModel, 5);
_stageMock.VerifyAllExpectations();
Assert.That (_visitor.SqlStatementBuilder.WhereCondition, Is.SameAs (fakeWhereCondition));
}
public void VisitAdditionalFromClause_WithWhereCondition_AddsWhereCondition ()
{
var fromClause = ExpressionHelper.CreateAdditionalFromClause();
var preparedTable = new SqlTable (SqlStatementModelObjectMother.CreateResolvedTableInfo(), JoinSemantics.Inner);
// TODO RMLNQSQL-2: Add existing where condition and assert that the new where condition is added, does not replace the original one.
var whereCondition = ExpressionHelper.CreateExpression(typeof(bool));
var preparedFromExpressionInfo = new FromExpressionInfo (
preparedTable,
new Ordering[] { },
new SqlTableReferenceExpression (preparedTable),
whereCondition);
_stageMock
.Expect (
mock => mock.PrepareFromExpression (
Arg<Expression>.Matches (e => e == fromClause.FromExpression),
Arg<ISqlPreparationContext>.Matches (c => c != _context),
Arg < Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (preparedFromExpressionInfo);
_stageMock.Replay();
_visitor.VisitAdditionalFromClause (fromClause, _queryModel, 0);
_stageMock.VerifyAllExpectations();
Assert.That (_visitor.SqlStatementBuilder.WhereCondition, Is.SameAs(whereCondition));
}
public void VisitAdditionalFromClause_AddsSqlTable_AndContextMapping ()
{
var fakeSqlTableForMainFromClause = SqlStatementModelObjectMother.CreateSqlTable();
_visitor.SqlStatementBuilder.SqlTables.Add (fakeSqlTableForMainFromClause);
var constantExpression = Expression.Constant (0);
var additionalFromClause = new AdditionalFromClause ("additional", typeof (int), constantExpression);
_queryModel.BodyClauses.Add (additionalFromClause);
var preparedSqlTable = SqlStatementModelObjectMother.CreateSqlTable();
var preparedFromExpressionInfo = new FromExpressionInfo (
preparedSqlTable,
new Ordering[] { },
new SqlTableReferenceExpression (preparedSqlTable),
null);
_stageMock
.Expect (
mock => mock.PrepareFromExpression (
Arg<Expression>.Matches (e => e == constantExpression),
Arg<ISqlPreparationContext>.Matches (c => c != _context),
Arg<Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (preparedFromExpressionInfo);
_stageMock.Replay();
_visitor.VisitAdditionalFromClause (additionalFromClause, _queryModel, 0);
_stageMock.VerifyAllExpectations();
Assert.That (_visitor.SqlStatementBuilder.SqlTables, Is.EqualTo (new[] { fakeSqlTableForMainFromClause, preparedSqlTable }));
var contextMapping = _visitor.Context.GetExpressionMapping (new QuerySourceReferenceExpression (additionalFromClause));
Assert.That (contextMapping, Is.Not.Null);
Assert.That (((SqlTableReferenceExpression) contextMapping).SqlTable, Is.SameAs (preparedSqlTable));
}
public void AddPreparedFromExpression_WhereConditionIsSet ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable ();
var whereCondition = Expression.Constant (true);
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new Ordering[0], new SqlTableReferenceExpression (sqlTable), whereCondition);
_visitor.SqlStatementBuilder.WhereCondition = null;
_visitor.AddPreparedFromExpression (preparedFromExpressionInfo);
Assert.That (_visitor.SqlStatementBuilder.WhereCondition, Is.SameAs (whereCondition));
}
public void AddPreparedFromExpression_WhereConditionIsAdded ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable ();
var whereCondition = Expression.Constant(true);
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new Ordering[0] , new SqlTableReferenceExpression (sqlTable), whereCondition);
var originalWhereCondition = Expression.Constant (false);
_visitor.SqlStatementBuilder.WhereCondition = originalWhereCondition;
_visitor.AddPreparedFromExpression (preparedFromExpressionInfo);
var expectedCombinedWhereCondition = Expression.AndAlso (originalWhereCondition, whereCondition);
SqlExpressionTreeComparer.CheckAreEqualTrees (expectedCombinedWhereCondition, _visitor.SqlStatementBuilder.WhereCondition);
}
public Expression VisitSqlTableReferenceExpression (SqlTableReferenceExpression expression)
{
ArgumentUtility.CheckNotNull ("expression", expression);
var tableInfo = new UnresolvedGroupReferenceTableInfo (expression.SqlTable);
var sqlTable = new SqlTable (tableInfo, JoinSemantics.Inner);
FromExpressionInfo = new FromExpressionInfo (sqlTable, new Ordering[0], new SqlTableReferenceExpression (sqlTable), null);
return expression;
}
public void AddPreparedFromExpression_NoWhereCondition ()
{
var sqlTable = SqlStatementModelObjectMother.CreateSqlTable ();
var preparedFromExpressionInfo = new FromExpressionInfo (
sqlTable, new Ordering[0], new SqlTableReferenceExpression (sqlTable), null);
var originalWhereCondition = Expression.Constant (false);
_visitor.SqlStatementBuilder.WhereCondition = originalWhereCondition;
_visitor.AddPreparedFromExpression (preparedFromExpressionInfo);
Assert.That (_visitor.SqlStatementBuilder.WhereCondition, Is.SameAs (originalWhereCondition));
}
protected override Expression VisitConstantExpression (ConstantExpression expression)
{
ArgumentUtility.CheckNotNull ("expression", expression);
var itemType = ReflectionUtility.GetItemTypeOfClosedGenericIEnumerable (expression.Type, "from expression");
var sqlTable = _tableGenerator (new UnresolvedTableInfo (itemType));
var sqlTableReferenceExpression = new SqlTableReferenceExpression (sqlTable);
FromExpressionInfo = new FromExpressionInfo (sqlTable, new Ordering[0], sqlTableReferenceExpression, null);
return sqlTableReferenceExpression;
}
public void HandleResultOperator_AllAfterGroupExpression ()
{
_sqlStatementBuilder.GroupByExpression = Expression.Constant ("group");
var predicate = Expression.Constant (true);
var preparedPredicate = Expression.Constant (false);
var resultOperator = new AllResultOperator (predicate);
var sqlStatement = _sqlStatementBuilder.GetSqlStatement ();
var fakePreparedSelectProjection = Expression.Constant (false);
var sqlTable = _sqlStatementBuilder.SqlTables[0];
var fakeFromExpressionInfo = new FromExpressionInfo (sqlTable, new Ordering[0], new SqlTableReferenceExpression (sqlTable), null);
_stageMock
.Expect (
mock => mock.PrepareFromExpression (Arg<Expression>.Is.Anything, Arg.Is (_context), Arg<Func<ITableInfo, SqlTable>>.Is.Anything))
.Return (fakeFromExpressionInfo);
_stageMock
.Expect (mock => mock.PrepareWhereExpression (
Arg<Expression>.Matches (e => e.NodeType == ExpressionType.Not && (((UnaryExpression) e).Operand == predicate)),
Arg<ISqlPreparationContext>.Matches (c => c == _context)))
.Return (preparedPredicate);
_stageMock
.Expect (mock => mock.PrepareSelectExpression (Arg<Expression>.Matches (e => e.NodeType == ExpressionType.Not), Arg.Is (_context)))
.WhenCalled (
mi =>
{
var selectProjection = (Expression) mi.Arguments[0];
Assert.That (selectProjection, Is.TypeOf (typeof (UnaryExpression)));
Assert.That (selectProjection.NodeType, Is.EqualTo(ExpressionType.Not));
Assert.That (((UnaryExpression) selectProjection).Operand, Is.TypeOf (typeof (SqlExistsExpression)));
Assert.That (((SqlExistsExpression) ((UnaryExpression) selectProjection).Operand).Expression, Is.TypeOf (typeof (SqlSubStatementExpression)));
})
.Return (fakePreparedSelectProjection);
_stageMock.Replay ();
_handler.HandleResultOperator (resultOperator, _sqlStatementBuilder, _generator, _stageMock, _context);
}
