private ErrorLog GenerateQueryViewForExtentAndType(StorageEntityContainerMapping entityContainerMapping, CqlIdentifiers identifiers, ViewSet views, EntitySetBase entity, EntityTypeBase type, ViewGenMode mode)
{
Debug.Assert(mode != ViewGenMode.GenerateAllViews);
// Keep track of the mapping exceptions that we have generated
ErrorLog errorLog = new ErrorLog();
if (m_config.IsViewTracing)
{
Helpers.StringTraceLine(String.Empty);
Helpers.StringTraceLine(String.Empty);
Helpers.FormatTraceLine("================= Generating {0} Query View for: {1} ===========================",
(mode == ViewGenMode.OfTypeViews) ? "OfType" : "OfTypeOnly",
entity.Name);
Helpers.StringTraceLine(String.Empty);
Helpers.StringTraceLine(String.Empty);
}
try
{
// (1) view generation (checks that extents are fully mapped)
ViewgenContext context = CreateViewgenContext(entity, ViewTarget.QueryView, identifiers);
QueryRewriter queryRewriter = GenerateViewsForExtentAndType(type, context, identifiers, views, mode);
}
catch (InternalMappingException exception)
{
// All exceptions have mapping errors in them
Debug.Assert(exception.ErrorLog.Count > 0, "Incorrectly created mapping exception");
errorLog.Merge(exception.ErrorLog);
}
return(errorLog);
}
private QueryRewriter GenerateViewsForExtentAndType(EdmType generatedType, ViewgenContext context, CqlIdentifiers identifiers, ViewSet views, ViewGenMode mode)
{
Debug.Assert(mode != ViewGenMode.GenerateAllViews, "By definition this method can not handle generating views for all extents");
QueryRewriter queryRewriter = new QueryRewriter(generatedType, context, mode);
queryRewriter.GenerateViewComponents();
// Get the basic view
CellTreeNode basicView = queryRewriter.BasicView;
if (m_config.IsNormalTracing)
{
Helpers.StringTrace("Basic View: ");
Helpers.StringTraceLine(basicView.ToString());
}
CellTreeNode simplifiedView = GenerateSimplifiedView(basicView, queryRewriter.UsedCells);
if (m_config.IsNormalTracing)
{
Helpers.StringTraceLine(String.Empty);
Helpers.StringTrace("Simplified View: ");
Helpers.StringTraceLine(simplifiedView.ToString());
}
CqlGenerator cqlGen = new CqlGenerator(simplifiedView,
queryRewriter.CaseStatements,
identifiers,
context.MemberMaps.ProjectedSlotMap,
queryRewriter.UsedCells.Count,
queryRewriter.TopLevelWhereClause,
m_entityContainerMapping.StorageMappingItemCollection);
string eSQLView;
DbQueryCommandTree commandTree;
if (m_config.GenerateEsql)
{
eSQLView = cqlGen.GenerateEsql();
commandTree = null;
}
else
{
eSQLView = null;
commandTree = cqlGen.GenerateCqt();
}
GeneratedView generatedView = GeneratedView.CreateGeneratedView(context.Extent, generatedType, commandTree, eSQLView, m_entityContainerMapping.StorageMappingItemCollection, m_config);
views.Add(context.Extent, generatedView);
return(queryRewriter);
}
// effects: Creates a view generator object that can be used to generate views
// based on usedCells (projectedSlotMap are useful for deciphering the fields)
internal BasicViewGenerator(MemberProjectionIndex projectedSlotMap, List<LeftCellWrapper> usedCells, FragmentQuery activeDomain,
ViewgenContext context, MemberDomainMap domainMap, ErrorLog errorLog, ConfigViewGenerator config)
{
Debug.Assert(usedCells.Count > 0, "No used cells");
m_projectedSlotMap = projectedSlotMap;
m_usedCells = usedCells;
m_viewgenContext = context;
m_activeDomain = activeDomain;
m_errorLog = errorLog;
m_config = config;
m_domainMap = domainMap;
}
// effects: Creates a view generator object that can be used to generate views
// based on usedCells (projectedSlotMap are useful for deciphering the fields)
internal BasicViewGenerator(MemberProjectionIndex projectedSlotMap, List <LeftCellWrapper> usedCells, FragmentQuery activeDomain,
ViewgenContext context, MemberDomainMap domainMap, ErrorLog errorLog, ConfigViewGenerator config)
{
Debug.Assert(usedCells.Count > 0, "No used cells");
m_projectedSlotMap = projectedSlotMap;
m_usedCells = usedCells;
m_viewgenContext = context;
m_activeDomain = activeDomain;
m_errorLog = errorLog;
m_config = config;
m_domainMap = domainMap;
}
// effects: Generates a view for an extent "extent" that belongs to
// schema "schema". extentCells are the cells for this extent.
// Adds the view corrsponding to the extent to "views"
private QueryRewriter GenerateDirectionalViewsForExtent(ViewTarget viewTarget, EntitySetBase extent, CqlIdentifiers identifiers, ViewSet views)
{
// First normalize the cells in terms of multiconstants, etc
// and then generate the view for the extent
ViewgenContext context = CreateViewgenContext(extent, viewTarget, identifiers);
QueryRewriter queryRewriter = null;
if (m_config.GenerateViewsForEachType)
{
// generate views for each OFTYPE(Extent, Type) combination
foreach (EdmType type in MetadataHelper.GetTypeAndSubtypesOf(extent.ElementType, m_entityContainerMapping.StorageMappingItemCollection.EdmItemCollection, false /*includeAbstractTypes*/))
{
if (m_config.IsViewTracing && false == type.Equals(extent.ElementType))
{
Helpers.FormatTraceLine("CQL View for {0} and type {1}", extent.Name, type.Name);
}
queryRewriter = GenerateViewsForExtentAndType(type, context, identifiers, views, ViewGenMode.OfTypeViews);
}
}
else
{
// generate the view for Extent only
queryRewriter = GenerateViewsForExtentAndType(extent.ElementType, context, identifiers, views, ViewGenMode.OfTypeViews);
}
if (viewTarget == ViewTarget.QueryView)
{
m_config.SetTimeForFinishedActivity(PerfType.QueryViews);
}
else
{
m_config.SetTimeForFinishedActivity(PerfType.UpdateViews);
}
// cache this rewriter (and context inside it) for future use in FK checking
m_queryRewriterCache[extent] = queryRewriter;
return(queryRewriter);
}
private QueryRewriter GenerateViewsForExtentAndType(
EdmType generatedType, ViewgenContext context, CqlIdentifiers identifiers, ViewSet views, ViewGenMode mode)
{
Debug.Assert(mode != ViewGenMode.GenerateAllViews, "By definition this method can not handle generating views for all extents");
var queryRewriter = new QueryRewriter(generatedType, context, mode);
queryRewriter.GenerateViewComponents();
// Get the basic view
var basicView = queryRewriter.BasicView;
if (m_config.IsNormalTracing)
{
Helpers.StringTrace("Basic View: ");
Helpers.StringTraceLine(basicView.ToString());
}
var simplifiedView = GenerateSimplifiedView(basicView, queryRewriter.UsedCells);
if (m_config.IsNormalTracing)
{
Helpers.StringTraceLine(String.Empty);
Helpers.StringTrace("Simplified View: ");
Helpers.StringTraceLine(simplifiedView.ToString());
}
var cqlGen = new CqlGenerator(
simplifiedView,
queryRewriter.CaseStatements,
identifiers,
context.MemberMaps.ProjectedSlotMap,
queryRewriter.UsedCells.Count,
queryRewriter.TopLevelWhereClause,
m_entityContainerMapping.StorageMappingItemCollection);
string eSQLView;
DbQueryCommandTree commandTree;
if (m_config.GenerateEsql)
{
eSQLView = cqlGen.GenerateEsql();
commandTree = null;
}
else
{
eSQLView = null;
commandTree = cqlGen.GenerateCqt();
}
var generatedView = GeneratedView.CreateGeneratedView(
context.Extent, generatedType, commandTree, eSQLView, m_entityContainerMapping.StorageMappingItemCollection, m_config);
views.Add(context.Extent, generatedView);
return queryRewriter;
}
private CellTreeSimplifier(ViewgenContext context)
{
m_viewgenContext = context;
}
private CellTreeSimplifier(ViewgenContext context)
{
m_viewgenContext = context;
}
