/// <summary>
/// Entry point for Type specific generation of Query Views
/// </summary>
internal static ViewGenResults GenerateTypeSpecificQueryView(StorageEntityContainerMapping containerMapping,
ConfigViewGenerator config,
EntitySetBase entity,
EntityTypeBase type,
bool includeSubtypes,
out bool success)
{
EntityUtil.CheckArgumentNull(containerMapping, "containerMapping");
EntityUtil.CheckArgumentNull(config, "config");
EntityUtil.CheckArgumentNull(entity, "entity");
EntityUtil.CheckArgumentNull(type, "type");
Debug.Assert(!type.Abstract, "Can not generate OfType/OfTypeOnly query view for and abstract type");
if (config.IsNormalTracing)
{
Helpers.StringTraceLine("");
Helpers.StringTraceLine("<<<<<<<< Generating Query View for Entity [" + entity.Name + "] OfType" + (includeSubtypes ? "" : "Only") + "(" + type.Name + ") >>>>>>>");
}
if (containerMapping.GetEntitySetMapping(entity.Name).QueryView != null)
{
//Type-specific QV does not exist in the cache, but
// there is a EntitySet QV. So we can't generate the view (no mapping exists for this EntitySet)
// and we rely on Query to call us again to get the EntitySet View.
success = false;
return null;
}
//Compute Cell Groups or get it from Memoizer
InputForComputingCellGroups args = new InputForComputingCellGroups(containerMapping, config);
OutputFromComputeCellGroups result = containerMapping.GetCellgroups(args);
success = result.Success;
if (!success)
{
return null;
}
List<ForeignConstraint> foreignKeyConstraints = result.ForeignKeyConstraints;
// Get a Clone of cell groups from cache since cells are modified during viewgen, and we dont want the cached copy to change
List<CellGroup> cellGroups = cellGroups = result.CellGroups.Select(setOfcells => new CellGroup(setOfcells.Select(cell => new Cell(cell)))).ToList();
List<Cell> cells = result.Cells;
CqlIdentifiers identifiers = result.Identifiers;
ViewGenResults viewGenResults = new ViewGenResults();
ErrorLog tmpLog = EnsureAllCSpaceContainerSetsAreMapped(cells, config, containerMapping);
if (tmpLog.Count > 0)
{
viewGenResults.AddErrors(tmpLog);
Helpers.StringTraceLine(viewGenResults.ErrorsToString());
success = true; //atleast we tried successfully
return viewGenResults;
}
foreach (CellGroup cellGroup in cellGroups)
{
if (!DoesCellGroupContainEntitySet(cellGroup, entity))
{
continue;
}
ViewGenerator viewGenerator = null;
ErrorLog groupErrorLog = new ErrorLog();
try
{
viewGenerator = new ViewGenerator(cellGroup, config, foreignKeyConstraints, containerMapping);
}
catch (InternalMappingException exception)
{
// All exceptions have mapping errors in them
Debug.Assert(exception.ErrorLog.Count > 0, "Incorrectly created mapping exception");
groupErrorLog = exception.ErrorLog;
}
if (groupErrorLog.Count > 0)
{
break;
}
Debug.Assert(viewGenerator != null); //make sure there is no exception thrown that does not add error to log
ViewGenMode mode = includeSubtypes ? ViewGenMode.OfTypeViews : ViewGenMode.OfTypeOnlyViews;
groupErrorLog = viewGenerator.GenerateQueryViewForSingleExtent(viewGenResults.Views, identifiers, entity, type, mode);
if (groupErrorLog.Count != 0)
{
viewGenResults.AddErrors(groupErrorLog);
}
}
success = true;
return viewGenResults;
}
/// <summary>
/// Entry point for Type specific generation of Query Views
/// </summary>
internal static ViewGenResults GenerateTypeSpecificQueryView(StorageEntityContainerMapping containerMapping,
ConfigViewGenerator config,
EntitySetBase entity,
EntityTypeBase type,
bool includeSubtypes,
out bool success)
{
EntityUtil.CheckArgumentNull(containerMapping, "containerMapping");
EntityUtil.CheckArgumentNull(config, "config");
EntityUtil.CheckArgumentNull(entity, "entity");
EntityUtil.CheckArgumentNull(type, "type");
Debug.Assert(!type.Abstract, "Can not generate OfType/OfTypeOnly query view for and abstract type");
if (config.IsNormalTracing)
{
Helpers.StringTraceLine("");
Helpers.StringTraceLine("<<<<<<<< Generating Query View for Entity [" + entity.Name + "] OfType" + (includeSubtypes ? "" : "Only") + "(" + type.Name + ") >>>>>>>");
}
if (containerMapping.GetEntitySetMapping(entity.Name).QueryView != null)
{
//Type-specific QV does not exist in the cache, but
// there is a EntitySet QV. So we can't generate the view (no mapping exists for this EntitySet)
// and we rely on Query to call us again to get the EntitySet View.
success = false;
return(null);
}
//Compute Cell Groups or get it from Memoizer
InputForComputingCellGroups args = new InputForComputingCellGroups(containerMapping, config);
OutputFromComputeCellGroups result = containerMapping.GetCellgroups(args);
success = result.Success;
if (!success)
{
return(null);
}
List <ForeignConstraint> foreignKeyConstraints = result.ForeignKeyConstraints;
// Get a Clone of cell groups from cache since cells are modified during viewgen, and we dont want the cached copy to change
List <CellGroup> cellGroups = cellGroups = result.CellGroups.Select(setOfcells => new CellGroup(setOfcells.Select(cell => new Cell(cell)))).ToList();
List <Cell> cells = result.Cells;
CqlIdentifiers identifiers = result.Identifiers;
ViewGenResults viewGenResults = new ViewGenResults();
ErrorLog tmpLog = EnsureAllCSpaceContainerSetsAreMapped(cells, config, containerMapping);
if (tmpLog.Count > 0)
{
viewGenResults.AddErrors(tmpLog);
Helpers.StringTraceLine(viewGenResults.ErrorsToString());
success = true; //atleast we tried successfully
return(viewGenResults);
}
foreach (CellGroup cellGroup in cellGroups)
{
if (!DoesCellGroupContainEntitySet(cellGroup, entity))
{
continue;
}
ViewGenerator viewGenerator = null;
ErrorLog groupErrorLog = new ErrorLog();
try
{
viewGenerator = new ViewGenerator(cellGroup, config, foreignKeyConstraints, containerMapping);
}
catch (InternalMappingException exception)
{
// All exceptions have mapping errors in them
Debug.Assert(exception.ErrorLog.Count > 0, "Incorrectly created mapping exception");
groupErrorLog = exception.ErrorLog;
}
if (groupErrorLog.Count > 0)
{
break;
}
Debug.Assert(viewGenerator != null); //make sure there is no exception thrown that does not add error to log
ViewGenMode mode = includeSubtypes ? ViewGenMode.OfTypeViews : ViewGenMode.OfTypeOnlyViews;
groupErrorLog = viewGenerator.GenerateQueryViewForSingleExtent(viewGenResults.Views, identifiers, entity, type, mode);
if (groupErrorLog.Count != 0)
{
viewGenResults.AddErrors(groupErrorLog);
}
}
success = true;
return(viewGenResults);
}
// effects: Given a list of cells in the schema, generates the query and
// update mapping views for OFTYPE(Extent, Type) combinations in this schema
// container. Returns a list of generated query and update views.
// If it is false and some columns in a table are unmapped, an
// exception is raised
private static ViewGenResults GenerateViewsFromCells(List<Cell> cells, ConfigViewGenerator config,
CqlIdentifiers identifiers,
StorageEntityContainerMapping containerMapping)
{
EntityUtil.CheckArgumentNull(cells, "cells");
EntityUtil.CheckArgumentNull(config, "config");
Debug.Assert(cells.Count > 0, "There must be at least one cell in the container mapping");
// Go through each table and determine their foreign key constraints
EntityContainer container = containerMapping.StorageEntityContainer;
Debug.Assert(container != null);
ViewGenResults viewGenResults = new ViewGenResults();
ErrorLog tmpLog = EnsureAllCSpaceContainerSetsAreMapped(cells, config, containerMapping);
if (tmpLog.Count > 0)
{
viewGenResults.AddErrors(tmpLog);
Helpers.StringTraceLine(viewGenResults.ErrorsToString());
return viewGenResults;
}
List<ForeignConstraint> foreignKeyConstraints = ForeignConstraint.GetForeignConstraints(container);
CellPartitioner partitioner = new CellPartitioner(cells, foreignKeyConstraints);
List<CellGroup> cellGroups = partitioner.GroupRelatedCells();
foreach (CellGroup cellGroup in cellGroups)
{
ViewGenerator viewGenerator = null;
ErrorLog groupErrorLog = new ErrorLog();
try
{
viewGenerator = new ViewGenerator(cellGroup, config, foreignKeyConstraints, containerMapping);
}
catch (InternalMappingException exception)
{
// All exceptions have mapping errors in them
Debug.Assert(exception.ErrorLog.Count > 0, "Incorrectly created mapping exception");
groupErrorLog = exception.ErrorLog;
}
if (groupErrorLog.Count == 0)
{
Debug.Assert(viewGenerator != null);
groupErrorLog = viewGenerator.GenerateAllBidirectionalViews(viewGenResults.Views, identifiers);
}
if (groupErrorLog.Count != 0)
{
viewGenResults.AddErrors(groupErrorLog);
}
}
// We used to print the errors here. Now we trace them as they are being thrown
//if (viewGenResults.HasErrors && config.IsViewTracing) {
// Helpers.StringTraceLine(viewGenResults.ErrorsToString());
//}
return viewGenResults;
}
// effects: Given a list of cells in the schema, generates the query and
// update mapping views for OFTYPE(Extent, Type) combinations in this schema
// container. Returns a list of generated query and update views.
// If it is false and some columns in a table are unmapped, an
// exception is raised
private static ViewGenResults GenerateViewsFromCells(List <Cell> cells, ConfigViewGenerator config,
CqlIdentifiers identifiers,
StorageEntityContainerMapping containerMapping)
{
EntityUtil.CheckArgumentNull(cells, "cells");
EntityUtil.CheckArgumentNull(config, "config");
Debug.Assert(cells.Count > 0, "There must be at least one cell in the container mapping");
// Go through each table and determine their foreign key constraints
EntityContainer container = containerMapping.StorageEntityContainer;
Debug.Assert(container != null);
ViewGenResults viewGenResults = new ViewGenResults();
ErrorLog tmpLog = EnsureAllCSpaceContainerSetsAreMapped(cells, config, containerMapping);
if (tmpLog.Count > 0)
{
viewGenResults.AddErrors(tmpLog);
Helpers.StringTraceLine(viewGenResults.ErrorsToString());
return(viewGenResults);
}
List <ForeignConstraint> foreignKeyConstraints = ForeignConstraint.GetForeignConstraints(container);
CellPartitioner partitioner = new CellPartitioner(cells, foreignKeyConstraints);
List <CellGroup> cellGroups = partitioner.GroupRelatedCells();
foreach (CellGroup cellGroup in cellGroups)
{
ViewGenerator viewGenerator = null;
ErrorLog groupErrorLog = new ErrorLog();
try
{
viewGenerator = new ViewGenerator(cellGroup, config, foreignKeyConstraints, containerMapping);
}
catch (InternalMappingException exception)
{
// All exceptions have mapping errors in them
Debug.Assert(exception.ErrorLog.Count > 0, "Incorrectly created mapping exception");
groupErrorLog = exception.ErrorLog;
}
if (groupErrorLog.Count == 0)
{
Debug.Assert(viewGenerator != null);
groupErrorLog = viewGenerator.GenerateAllBidirectionalViews(viewGenResults.Views, identifiers);
}
if (groupErrorLog.Count != 0)
{
viewGenResults.AddErrors(groupErrorLog);
}
}
// We used to print the errors here. Now we trace them as they are being thrown
//if (viewGenResults.HasErrors && config.IsViewTracing) {
// Helpers.StringTraceLine(viewGenResults.ErrorsToString());
//}
return(viewGenResults);
}
