public virtual async ValueTask <QsiTableStructure> BuildTableStructure(TableCompileContext context, IQsiTableNode table)
{
context.ThrowIfCancellationRequested();
switch (table)
{
case IQsiTableReferenceNode tableReference:
return(await BuildTableReferenceStructure(context, tableReference));
case IQsiTableFunctionNode tableFunction:
return(await BuildTableFunctionStructure(context, tableFunction));
case IQsiDerivedTableNode derivedTable:
return(await BuildDerivedTableStructure(context, derivedTable));
case IQsiInlineDerivedTableNode inlineDerivedTableNode:
return(await BuildInlineDerivedTableStructure(context, inlineDerivedTableNode));
case IQsiJoinedTableNode joinedTable:
return(await BuildJoinedTableStructure(context, joinedTable));
case IQsiCompositeTableNode compositeTable:
return(await BuildCompositeTableStructure(context, compositeTable));
}
throw new InvalidOperationException();
}
protected virtual async ValueTask <QsiTableStructure> BuildTableAccessStructure(TableCompileContext context, IQsiTableAccessNode table)
{
context.ThrowIfCancellationRequested();
var lookup = ResolveTableStructure(context, table.Identifier);
// view
if (context.Options.UseViewTracing &&
!lookup.IsSystem &&
(lookup.Type == QsiTableType.View || lookup.Type == QsiTableType.MaterializedView))
{
var script = context.Engine.RepositoryProvider.LookupDefinition(lookup.Identifier, lookup.Type) ??
throw new QsiException(QsiError.UnableResolveDefinition, lookup.Identifier);
var viewTable = (IQsiTableNode)context.Engine.TreeParser.Parse(script) ??
throw new QsiException(QsiError.Internal, "Invalid view node");
var typeBackup = lookup.Type;
using var viewCompileContext = new TableCompileContext(context);
if (lookup.Identifier.Level > 1)
{
viewCompileContext.PushIdentifierScope(lookup.Identifier.SubIdentifier(..^ 1));
}
var viewTableStructure = await BuildTableStructure(viewCompileContext, viewTable);
viewTableStructure.Identifier = ResolveQualifiedIdentifier(context, viewTableStructure.Identifier);
lookup = viewTableStructure;
lookup.Type = typeBackup;
}
return(lookup);
}
protected virtual ValueTask <QsiTableStructure> BuildInlineDerivedTableStructure(TableCompileContext context, IQsiInlineDerivedTableNode table)
{
context.ThrowIfCancellationRequested();
var alias = table.Alias?.Name;
if (alias == null &&
table.Parent is IQsiDerivedColumnNode &&
!context.Options.AllowNoAliasInDerivedTable)
{
throw new QsiException(QsiError.NoAlias);
}
var declaredTable = new QsiTableStructure
{
Type = QsiTableType.Inline,
Identifier = alias == null ? null : new QsiQualifiedIdentifier(alias)
};
int?columnCount = null;
switch (table.Columns)
{
case null:
case var cd when cd.All(c => c is IQsiAllColumnNode {
Path: null
}) :
// Skip
break;
protected virtual async ValueTask <QsiTableStructure> BuildRecursiveCompositeTableStructure(TableCompileContext context, IQsiDerivedTableNode table, IQsiCompositeTableNode source)
{
context.ThrowIfCancellationRequested();
var declaredTable = new QsiTableStructure
{
Type = QsiTableType.Derived,
Identifier = new QsiQualifiedIdentifier(table.Alias.Name)
};
int sourceOffset = 0;
var structures = new List <QsiTableStructure>(source.Sources.Length);
if (table.Columns.Any(c => c is not IQsiAllColumnNode))
{
foreach (var columnNode in table.Columns.Cast <IQsiSequentialColumnNode>())
{
var column = declaredTable.NewColumn();
column.Name = columnNode.Alias.Name;
}
}
protected virtual ValueTask <QsiTableStructure> BuildInlineDerivedTableStructure(TableCompileContext context, IQsiInlineDerivedTableNode table)
{
context.ThrowIfCancellationRequested();
var alias = table.Alias?.Name;
if (alias == null &&
table.Parent is IQsiDerivedColumnNode &&
!context.Options.AllowNoAliasInDerivedTable)
{
throw new QsiException(QsiError.NoAlias);
}
var declaredTable = new QsiTableStructure
{
Type = QsiTableType.Inline,
Identifier = alias == null ? null : new QsiQualifiedIdentifier(alias)
};
int?columnCount = null;
switch (table.Columns)
{
case null:
case var cd when cd.All(c => c is IQsiAllColumnNode { Path: null } all) :
// Skip
break;
case var cd when cd.TryCast(out IQsiSequentialColumnNode[] sequentialColumns):
foreach (var column in sequentialColumns)
{
var c = declaredTable.NewColumn();
c.Name = column.Alias.Name;
}
columnCount = sequentialColumns.Length;
break;
default:
throw new NotSupportedException("Not supported columns in inline derived table.");
}
// Skip trace columns in expression.
// Because don't know the possibility of declaring a referenceable column in the expression.
// ISSUE: row.ColumnValues
foreach (var row in table.Rows ?? Enumerable.Empty <IQsiRowValueExpressionNode>())
{
if (!columnCount.HasValue)
{
columnCount = row.ColumnValues.Length;
}
else if (columnCount != row.ColumnValues.Length)
{
throw new QsiException(QsiError.DifferentColumnsCount);
}
}
if ((columnCount ?? 0) == 0)
{
if (!context.Options.AllowEmptyColumnsInInline)
{
throw new QsiException(QsiError.NoColumnsSpecified, alias);
}
columnCount = 0;
}
if (declaredTable.Columns.Count != columnCount)
{
for (int i = 0; i < columnCount; i++)
{
declaredTable.NewColumn();
}
}
return(new ValueTask <QsiTableStructure>(declaredTable));
}
protected virtual async ValueTask <QsiTableStructure> BuildDerivedTableStructure(TableCompileContext context, IQsiDerivedTableNode table)
{
context.ThrowIfCancellationRequested();
using var scopedContext = new TableCompileContext(context);
// Directives
if (table.Directives?.Tables?.Length > 0)
{
await BuildDirectives(scopedContext, table.Directives);
}
// Table Source
var alias = table.Alias?.Name;
if (alias == null &&
table.Parent is IQsiDerivedColumnNode &&
!context.Options.AllowNoAliasInDerivedTable)
{
throw new QsiException(QsiError.NoAlias);
}
if (table.Source is IQsiJoinedTableNode joinedTableNode)
{
scopedContext.SourceTable = await BuildJoinedTableStructure(scopedContext, joinedTableNode);
}
else if (table.Source != null)
{
using var sourceContext = new TableCompileContext(scopedContext);
scopedContext.SourceTable = await BuildTableStructure(scopedContext, table.Source);
}
var declaredTable = new QsiTableStructure
{
Type = QsiTableType.Derived,
Identifier = alias == null ? null : new QsiQualifiedIdentifier(alias)
};
if (scopedContext.SourceTable != null)
{
declaredTable.References.Add(scopedContext.SourceTable);
}
var columns = table.Columns;
if (columns == null || columns.Count == 0)
{
if (!context.Options.AllowEmptyColumnsInSelect)
{
throw new QsiException(QsiError.Syntax);
}
}
else if (columns.TryCast(out IQsiSequentialColumnNode[] sequentialColumns))
{
// Sequential columns definition
if (scopedContext.SourceTable == null)
{
throw new QsiException(QsiError.NoTablesUsed);
}
var columnType = sequentialColumns[0].ColumnType;
QsiTableColumn[] allColumns = scopedContext.SourceTable.VisibleColumns.ToArray();
int columnLength = allColumns.Length;
if (sequentialColumns.Length > allColumns.Length)
{
throw new QsiException(QsiError.SpecifiesMoreColumnNames);
}
if (columnType == QsiSequentialColumnType.Default)
{
if (sequentialColumns.Length != allColumns.Length)
{
throw new QsiException(QsiError.DifferentColumnsCount);
}
columnLength = sequentialColumns.Length;
}
for (int i = 0; i < columnLength; i++)
{
var column = allColumns[i];
var declaredColumn = declaredTable.NewColumn();
declaredColumn.Name = i < sequentialColumns.Length ? sequentialColumns[i].Alias?.Name : column.Name;
declaredColumn.References.Add(column);
}
}
else
{
// Compund columns definition
foreach (var column in columns)
{
IEnumerable <QsiTableColumn> resolvedColumns = ResolveColumns(scopedContext, column);
switch (column)
{
case IQsiDerivedColumnNode derivedColum:
{
var declaredColumn = declaredTable.NewColumn();
declaredColumn.Name = derivedColum.Alias?.Name;
declaredColumn.IsExpression = derivedColum.IsExpression;
declaredColumn.References.AddRange(resolvedColumns);
break;
}
case IQsiBindingColumnNode bindingColumn:
{
var declaredColumn = declaredTable.NewColumn();
declaredColumn.Name = new QsiIdentifier(bindingColumn.Id, false);
declaredColumn.IsBinding = true;
break;
}
default:
{
foreach (var c in resolvedColumns)
{
var declaredColumn = declaredTable.NewColumn();
declaredColumn.Name = c.Name;
declaredColumn.References.Add(c);
}
break;
}
}
}
}
return(declaredTable);
}
protected virtual async ValueTask <QsiTableStructure> BuildTableReferenceStructure(TableCompileContext context, IQsiTableReferenceNode table)
{
context.ThrowIfCancellationRequested();
var lookup = ResolveTableStructure(context, table.Identifier);
// view
if (context.Options.UseViewTracing &&
!lookup.IsSystem &&
lookup.Type is QsiTableType.View or QsiTableType.MaterializedView)
{
var script = context.Engine.RepositoryProvider.LookupDefinition(lookup.Identifier, lookup.Type) ??
throw new QsiException(QsiError.UnableResolveDefinition, lookup.Identifier);
var viewNode = context.Engine.TreeParser.Parse(script);
using var viewCompileContext = new TableCompileContext(context);
if (lookup.Identifier.Level > 1)
{
viewCompileContext.PushIdentifierScope(lookup.Identifier.SubIdentifier(..^ 1));
}
QsiTableStructure viewStructure;
switch (viewNode)
{
/* TODO: Remove old view node
* [V] Cql
* [-] JSql (Deprecated)
* [V] MySql
* [V] PhoenixSql
* [V] SqlServer
*/
case IQsiTableNode viewTableNode:
{
var viewTableStructure = await BuildTableStructure(viewCompileContext, viewTableNode);
viewTableStructure.Identifier = ResolveQualifiedIdentifier(context, viewTableStructure.Identifier);
viewStructure = viewTableStructure;
break;
}
case IQsiDefinitionNode definitionNode:
{
viewStructure = await BuildDefinitionStructure(viewCompileContext, definitionNode);
break;
}
default:
throw TreeHelper.NotSupportedTree(viewNode);
}
if (viewStructure.Columns.Count != lookup.Columns.Count)
{
throw new QsiException(QsiError.DifferentColumnsCount, "View definition");
}
lookup.References.Add(viewStructure);
for (int i = 0; i < viewStructure.Columns.Count; i++)
{
lookup.Columns[i].References.Add(viewStructure.Columns[i]);
}
}
return(lookup);
}