public QsiColumnNode VisitSelectStarExpression(SelectStarExpression selectStarExpression)
{
return(TreeHelper.Create <QsiAllColumnNode>(n =>
{
if (selectStarExpression.Qualifier != null)
{
n.Path = IdentifierVisitor.CreateQualifiedIdentifier(selectStarExpression.Qualifier);
}
SqlServerTree.PutFragmentSpan(n, selectStarExpression);
}));
}
public QsiChangeSearchPathActionNode VisitUseStatement(UseStatement useStatement)
{
var node = new QsiChangeSearchPathActionNode
{
Identifiers = new[]
{
IdentifierVisitor.CreateIdentifier(useStatement.DatabaseName),
}
};
SqlServerTree.PutFragmentSpan(node, useStatement);
return(node);
}
public QsiGroupingExpressionNode VisitGroupByClause(GroupByClause groupByClause, HavingClause havingClause)
{
return(TreeHelper.Create <QsiGroupingExpressionNode>(n =>
{
n.Items.AddRange(groupByClause.GroupingSpecifications.Select(VisitGroupSpecifcation));
if (havingClause != null)
{
n.Having.SetValue(VisitHavingClause(havingClause));
}
SqlServerTree.PutFragmentSpan(n, groupByClause);
}));
}
public QsiDerivedTableNode VisitQueryDerivedTable(QueryDerivedTable queryDerivedTable)
{
return(TreeHelper.Create <QsiDerivedTableNode>(n =>
{
if (queryDerivedTable.Alias != null)
{
n.Alias.SetValue(CreateAliasNode(queryDerivedTable.Alias));
}
n.Columns.SetValue(TreeHelper.CreateAllColumnsDeclaration());
n.Source.SetValue(VisitQueryExpression(queryDerivedTable.QueryExpression));
SqlServerTree.PutFragmentSpan(n, queryDerivedTable);
}));
}
public QsiExpressionNode VisitFullTextPredicate(FullTextPredicate fullTextPredicate)
{
return(TreeHelper.Create <QsiInvokeExpressionNode>(n =>
{
n.Member.SetValue(TreeHelper.CreateFunction(SqlServerKnownFunction.FullText));
n.Parameters.AddRange(fullTextPredicate.Columns.Select(ExpressionVisitor.VisitColumnReferenceExpression));
n.Parameters.Add(fullTextPredicate.Value != null ?
VisitValueExpression(fullTextPredicate.Value) :
VisitLiteral(fullTextPredicate.PropertyName));
n.Parameters.Add(VisitValueExpression(fullTextPredicate.LanguageTerm));
SqlServerTree.PutFragmentSpan(n, fullTextPredicate);
}));
}
public QsiBinaryExpressionNode VisitBooleanBinaryExpression(BooleanBinaryExpression booleanBinaryExpression)
{
return(TreeHelper.Create <QsiBinaryExpressionNode>(n =>
{
n.Left.SetValue(VisitBooleanExpression(booleanBinaryExpression.FirstExpression));
n.Right.SetValue(VisitBooleanExpression(booleanBinaryExpression.SecondExpression));
n.Operator = booleanBinaryExpression.BinaryExpressionType switch
{
BooleanBinaryExpressionType.And => SqlServerKnownOperator.And,
BooleanBinaryExpressionType.Or => SqlServerKnownOperator.Or,
_ => throw new InvalidOperationException()
};
SqlServerTree.PutFragmentSpan(n, booleanBinaryExpression);
}));
}
public SqlServerJoinedTableNode CreateJoinedTableNode(string joinType, JoinTableReference joinTableReference, BooleanExpression searchCondition = null)
{
return(TreeHelper.Create <SqlServerJoinedTableNode>(n =>
{
n.Left.SetValue(VisitTableReference(joinTableReference.FirstTableReference));
n.Right.SetValue(VisitTableReference(joinTableReference.SecondTableReference));
if (searchCondition != null)
{
n.Expression.SetValue(ExpressionVisitor.VisitBooleanExpression(searchCondition));
}
n.JoinType = joinType;
SqlServerTree.PutFragmentSpan(n, joinTableReference);
}));
}
public SqlServerBinaryTableNode VisitBinaryQueryExpression(BinaryQueryExpression binaryQueryExpression)
{
return(TreeHelper.Create <SqlServerBinaryTableNode>(n =>
{
n.Left.SetValue(VisitQueryExpression(binaryQueryExpression.FirstQueryExpression));
n.Right.SetValue(VisitQueryExpression(binaryQueryExpression.SecondQueryExpression));
n.BinaryTableType = binaryQueryExpression.BinaryQueryExpressionType switch
{
BinaryQueryExpressionType.Except => SqlServerBinaryTableType.Except,
BinaryQueryExpressionType.Intersect => SqlServerBinaryTableType.Intersect,
BinaryQueryExpressionType.Union => SqlServerBinaryTableType.Union,
_ => throw new InvalidOperationException()
};
SqlServerTree.PutFragmentSpan(n, binaryQueryExpression);
}));
}
public QsiLimitExpressionNode VisitLimitOffset(TopRowFilter topRowFilter, OffsetClause offsetClause)
{
return(TreeHelper.Create <QsiLimitExpressionNode>(n =>
{
if (topRowFilter != null)
{
var topRowFilterNode = ExpressionVisitor.VisitScalarExpression(topRowFilter.Expression);
SqlServerTree.PutFragmentSpan(topRowFilterNode, topRowFilter);
n.Limit.SetValue(topRowFilterNode);
}
if (offsetClause != null)
{
var offsetClauseNode = ExpressionVisitor.VisitScalarExpression(offsetClause.OffsetExpression);
SqlServerTree.PutFragmentSpan(offsetClauseNode, offsetClause);
n.Offset.SetValue(offsetClauseNode);
}
}));
}
public QsiTableNode VisitInlineDerivedTable(InlineDerivedTable inlineDerivedTable)
{
return(TreeHelper.Create <QsiInlineDerivedTableNode>(n =>
{
if (inlineDerivedTable.Alias != null)
{
n.Alias.SetValue(CreateAliasNode(inlineDerivedTable.Alias));
}
if (!ListUtility.IsNullOrEmpty(inlineDerivedTable.Columns))
{
var columnsDeclaration = new QsiColumnsDeclarationNode();
columnsDeclaration.Columns.AddRange(CreateSequentialColumnNodes(inlineDerivedTable.Columns));
n.Columns.SetValue(columnsDeclaration);
}
n.Rows.AddRange(inlineDerivedTable.RowValues.Select(ExpressionVisitor.VisitRowValue));
SqlServerTree.PutFragmentSpan(n, inlineDerivedTable);
}));
}
public QsiDerivedTableNode VisitQuerySpecification(QuerySpecification querySpecification)
{
return(TreeHelper.Create <QsiDerivedTableNode>(n =>
{
// Ignored HavingClause, GroupByClause, TopRowFilter, UniqueRowFilter, ForClause, OffsetClause
var columnsDeclarationNode = new QsiColumnsDeclarationNode();
columnsDeclarationNode.Columns.AddRange(querySpecification.SelectElements.Select(VisitSelectElement));
n.Columns.SetValue(columnsDeclarationNode);
if (querySpecification.WhereClause != null)
{
n.Where.SetValue(VisitWhereClause(querySpecification.WhereClause));
}
if (querySpecification.TopRowFilter != null || querySpecification.OffsetClause != null)
{
n.Limit.SetValue(VisitLimitOffset(querySpecification.TopRowFilter, querySpecification.OffsetClause));
}
if (querySpecification.FromClause != null)
{
n.Source.SetValue(VisitFromClause(querySpecification.FromClause));
}
if (querySpecification.OrderByClause != null)
{
n.Order.SetValue(VisitOrderByClause(querySpecification.OrderByClause));
}
if (querySpecification.GroupByClause != null)
{
n.Grouping.SetValue(VisitGroupByClause(querySpecification.GroupByClause, querySpecification.HavingClause));
}
SqlServerTree.PutFragmentSpan(n, querySpecification);
}));
}
public QsiExpressionNode VisitLikePredicate(LikePredicate likePredicate)
{
QsiExpressionNode node = TreeHelper.Create <QsiInvokeExpressionNode>(n =>
{
n.Member.SetValue(TreeHelper.CreateFunction(SqlServerKnownFunction.Like));
n.Parameters.Add(VisitScalarExpression(likePredicate.FirstExpression));
n.Parameters.Add(VisitScalarExpression(likePredicate.SecondExpression));
if (likePredicate.EscapeExpression != null)
{
n.Parameters.Add(VisitScalarExpression(likePredicate.EscapeExpression));
}
});
if (likePredicate.NotDefined)
{
node = TreeHelper.CreateUnary(SqlServerKnownOperator.Not, node);
}
SqlServerTree.PutFragmentSpan(node, likePredicate);
return(node);
}
public QsiExpressionNode VisitBooleanTernaryExpression(BooleanTernaryExpression booleanTernaryExpression)
{
var invoke = TreeHelper.Create <QsiInvokeExpressionNode>(n =>
{
n.Member.SetValue(TreeHelper.CreateFunction(SqlServerKnownFunction.Ternary));
n.Parameters.Add(VisitScalarExpression(booleanTernaryExpression.FirstExpression));
n.Parameters.Add(VisitScalarExpression(booleanTernaryExpression.SecondExpression));
n.Parameters.Add(VisitScalarExpression(booleanTernaryExpression.ThirdExpression));
});
var operand = booleanTernaryExpression.TernaryExpressionType switch
{
BooleanTernaryExpressionType.Between => SqlServerKnownOperator.Between,
BooleanTernaryExpressionType.NotBetween => SqlServerKnownOperator.NotBetween,
_ => throw new InvalidOperationException()
};
var node = TreeHelper.CreateUnary(operand, invoke);
SqlServerTree.PutFragmentSpan(node, booleanTernaryExpression);
return(node);
}
public QsiTableNode VisitNamedTableReference(NamedTableReference namedTableReference)
{
var tableNode = new QsiTableReferenceNode
{
Identifier = IdentifierVisitor.CreateQualifiedIdentifier(namedTableReference.SchemaObject)
};
SqlServerTree.PutFragmentSpan(tableNode, namedTableReference.SchemaObject);
if (namedTableReference.Alias == null)
{
return(tableNode);
}
return(TreeHelper.Create <QsiDerivedTableNode>(n =>
{
n.Columns.SetValue(TreeHelper.CreateAllColumnsDeclaration());
n.Source.SetValue(tableNode);
n.Alias.SetValue(CreateAliasNode(namedTableReference.Alias));
SqlServerTree.PutFragmentSpan(n, namedTableReference);
}));
}
