public ContextDetailInitiatedTerminated(ContextDetailCondition start, ContextDetailCondition end, bool overlapping, ExprNode[] distinctExpressions)
{
_start = start;
_end = end;
_overlapping = overlapping;
_distinctExpressions = distinctExpressions;
}
public static void AddEndpointTypes(String contextName, ContextDetailCondition endpoint, IDictionary <String, Object> properties, ICollection <String> allTags)
{
if (endpoint is ContextDetailConditionFilter)
{
var filter = (ContextDetailConditionFilter)endpoint;
if (filter.OptionalFilterAsName != null)
{
if (properties.ContainsKey(filter.OptionalFilterAsName))
{
throw new ExprValidationException("For context '" + contextName + "' the stream or tag name '" + filter.OptionalFilterAsName + "' is already declared");
}
allTags.Add(filter.OptionalFilterAsName);
properties.Put(filter.OptionalFilterAsName, filter.FilterSpecCompiled.FilterForEventType);
}
}
if (endpoint is ContextDetailConditionPattern)
{
var pattern = (ContextDetailConditionPattern)endpoint;
foreach (var entry in pattern.PatternCompiled.TaggedEventTypes)
{
if (properties.ContainsKey(entry.Key) && !properties.Get(entry.Key).Equals(entry.Value.First))
{
throw new ExprValidationException("For context '" + contextName + "' the stream or tag name '" + entry.Key + "' is already declared");
}
allTags.Add(entry.Key);
properties.Put(entry.Key, entry.Value.First);
}
}
}
public static ContextControllerCondition GetEndpoint(String contextName,
EPServicesContext servicesContext,
AgentInstanceContext agentInstanceContext,
ContextDetailCondition endpoint,
ContextControllerConditionCallback callback,
ContextInternalFilterAddendum filterAddendum,
bool isStartEndpoint,
int nestingLevel,
int pathId,
int subpathId) {
if (endpoint is ContextDetailConditionCrontab) {
var crontab = (ContextDetailConditionCrontab) endpoint;
var scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
return new ContextControllerConditionCrontab(agentInstanceContext.StatementContext, scheduleSlot, crontab, callback, filterAddendum);
}
else if (endpoint is ContextDetailConditionFilter) {
var filter = (ContextDetailConditionFilter) endpoint;
return new ContextControllerConditionFilter(servicesContext, agentInstanceContext, filter, callback, filterAddendum);
}
else if (endpoint is ContextDetailConditionPattern) {
var key = new ContextStatePathKey(nestingLevel, pathId, subpathId);
var pattern = (ContextDetailConditionPattern) endpoint;
return new ContextControllerConditionPattern(servicesContext, agentInstanceContext, pattern, callback, filterAddendum, isStartEndpoint, key);
}
else if (endpoint is ContextDetailConditionTimePeriod) {
var timePeriod = (ContextDetailConditionTimePeriod) endpoint;
var scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
return new ContextControllerConditionTimePeriod(contextName, agentInstanceContext, scheduleSlot, timePeriod, callback, filterAddendum);
}
else if (endpoint is ContextDetailConditionImmediate) {
return new ContextControllerConditionImmediate();
}
throw new IllegalStateException("Unrecognized context range endpoint " + endpoint.GetType());
}
private static void CollectExpressions(IList <ExprNode> expressions, ContextDetailCondition endpoint)
{
if (endpoint is ContextDetailConditionCrontab)
{
var crontab = (ContextDetailConditionCrontab)endpoint;
expressions.AddAll(crontab.Crontab);
}
}
internal ContextDetailMatchPair(ContextDetailCondition condition, MatchEventSpec matches, ISet <string> allTags)
{
Condition = condition;
Matches = matches;
AllTags = allTags;
}
private ContextDetailMatchPair ValidateRewriteContextCondition(
EPServicesContext servicesContext,
StatementContext statementContext,
ContextDetailCondition endpoint,
ISet <string> eventTypesReferenced,
MatchEventSpec priorMatches,
ISet <string> priorAllTags)
{
if (endpoint is ContextDetailConditionCrontab)
{
var crontab = (ContextDetailConditionCrontab)endpoint;
var schedule = ExprNodeUtility.ToCrontabSchedule(ExprNodeOrigin.CONTEXTCONDITION, crontab.Crontab, statementContext, false);
crontab.Schedule = schedule;
return(new ContextDetailMatchPair(crontab, new MatchEventSpec(), new LinkedHashSet <string>()));
}
if (endpoint is ContextDetailConditionTimePeriod)
{
var timePeriod = (ContextDetailConditionTimePeriod)endpoint;
var validationContext =
new ExprValidationContext(
new StreamTypeServiceImpl(servicesContext.EngineURI, false),
statementContext.EngineImportService,
statementContext.StatementExtensionServicesContext, null,
statementContext.SchedulingService,
statementContext.VariableService, statementContext.TableService,
GetDefaultAgentInstanceContext(statementContext), statementContext.EventAdapterService,
statementContext.StatementName, statementContext.StatementId, statementContext.Annotations,
statementContext.ContextDescriptor, statementContext.ScriptingService, false, false, false, false,
null, false);
ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.CONTEXTCONDITION, timePeriod.TimePeriod, validationContext);
if (timePeriod.TimePeriod.IsConstantResult)
{
if (timePeriod.TimePeriod.EvaluateAsSeconds(null, true, null) < 0)
{
throw new ExprValidationException("Invalid negative time period expression '" + ExprNodeUtility.ToExpressionStringMinPrecedenceSafe(timePeriod.TimePeriod) + "'");
}
}
return(new ContextDetailMatchPair(timePeriod, new MatchEventSpec(), new LinkedHashSet <string>()));
}
if (endpoint is ContextDetailConditionPattern)
{
var pattern = (ContextDetailConditionPattern)endpoint;
var matches = ValidatePatternContextConditionPattern(statementContext, pattern, eventTypesReferenced, priorMatches, priorAllTags);
return(new ContextDetailMatchPair(pattern, matches.First, matches.Second));
}
if (endpoint is ContextDetailConditionFilter)
{
var filter = (ContextDetailConditionFilter)endpoint;
ValidateNotTable(servicesContext, filter.FilterSpecRaw.EventTypeName);
// compile as filter if there are no prior match to consider
if (priorMatches == null || (priorMatches.ArrayEventTypes.IsEmpty() && priorMatches.TaggedEventTypes.IsEmpty()))
{
var rawExpr = new FilterStreamSpecRaw(filter.FilterSpecRaw, ViewSpec.EMPTY_VIEWSPEC_ARRAY, null, new StreamSpecOptions());
var compiled = (FilterStreamSpecCompiled)rawExpr.Compile(statementContext, eventTypesReferenced, false, Collections.GetEmptyList <int>(), false, true, false, filter.OptionalFilterAsName);
filter.FilterSpecCompiled = compiled.FilterSpec;
var matchEventSpec = new MatchEventSpec();
var filterForType = compiled.FilterSpec.FilterForEventType;
var allTags = new LinkedHashSet <string>();
if (filter.OptionalFilterAsName != null)
{
matchEventSpec.TaggedEventTypes.Put(filter.OptionalFilterAsName, new Pair <EventType, string>(filterForType, rawExpr.RawFilterSpec.EventTypeName));
allTags.Add(filter.OptionalFilterAsName);
}
return(new ContextDetailMatchPair(filter, matchEventSpec, allTags));
}
// compile as pattern if there are prior matches to consider, since this is a type of followed-by relationship
var factoryNode = servicesContext.PatternNodeFactory.MakeFilterNode(filter.FilterSpecRaw, filter.OptionalFilterAsName, 0);
var pattern = new ContextDetailConditionPattern(factoryNode, true, false);
var matches = ValidatePatternContextConditionPattern(statementContext, pattern, eventTypesReferenced, priorMatches, priorAllTags);
return(new ContextDetailMatchPair(pattern, matches.First, matches.Second));
}
else if (endpoint is ContextDetailConditionImmediate)
{
return(new ContextDetailMatchPair(endpoint, new MatchEventSpec(), new LinkedHashSet <string>()));
}
else
{
throw new IllegalStateException("Unrecognized endpoint type " + endpoint);
}
}
protected ContextControllerCondition MakeEndpoint(ContextDetailCondition endpoint, ContextInternalFilterAddendum filterAddendum, bool isStartEndpoint, int subPathId)
{
return(ContextControllerConditionFactory.GetEndpoint(_factory.FactoryContext.ContextName, _factory.FactoryContext.ServicesContext, _factory.FactoryContext.AgentInstanceContextCreate,
endpoint, this, filterAddendum, isStartEndpoint,
_factory.FactoryContext.NestingLevel, _pathId, subPathId));
}
private static ContextDetail WalkChoice(EsperEPL2GrammarParser.CreateContextChoiceContext ctx, IDictionary <ITree, ExprNode> astExprNodeMap, IDictionary <ITree, EvalFactoryNode> astPatternNodeMap, PropertyEvalSpec propertyEvalSpec, FilterSpecRaw filterSpec)
{
// temporal fixed (start+end) and overlapping (initiated/terminated)
if (ctx.START() != null || ctx.INITIATED() != null)
{
ExprNode[] distinctExpressions = null;
if (ctx.createContextDistinct() != null)
{
if (ctx.createContextDistinct().expressionList() == null)
{
distinctExpressions = new ExprNode[0];
}
else
{
distinctExpressions = ASTExprHelper.ExprCollectSubNodesPerNode(ctx.createContextDistinct().expressionList().expression(), astExprNodeMap);
}
}
ContextDetailCondition startEndpoint;
if (ctx.START() != null)
{
bool immediate = CheckNow(ctx.i);
if (immediate)
{
startEndpoint = new ContextDetailConditionImmediate();
}
else
{
startEndpoint = GetContextCondition(ctx.r1, astExprNodeMap, astPatternNodeMap, propertyEvalSpec, false);
}
}
else
{
bool immediate = CheckNow(ctx.i);
startEndpoint = GetContextCondition(ctx.r1, astExprNodeMap, astPatternNodeMap, propertyEvalSpec, immediate);
}
bool overlapping = ctx.INITIATED() != null;
ContextDetailCondition endEndpoint = GetContextCondition(ctx.r2, astExprNodeMap, astPatternNodeMap, propertyEvalSpec, false);
return(new ContextDetailInitiatedTerminated(startEndpoint, endEndpoint, overlapping, distinctExpressions));
}
// partitioned
if (ctx.PARTITION() != null)
{
IList <EsperEPL2GrammarParser.CreateContextPartitionItemContext> partitions = ctx.createContextPartitionItem();
IList <ContextDetailPartitionItem> rawSpecs = new List <ContextDetailPartitionItem>();
foreach (EsperEPL2GrammarParser.CreateContextPartitionItemContext partition in partitions)
{
filterSpec = ASTFilterSpecHelper.WalkFilterSpec(partition.eventFilterExpression(), propertyEvalSpec, astExprNodeMap);
propertyEvalSpec = null;
IList <String> propertyNames = new List <String>();
IList <EsperEPL2GrammarParser.EventPropertyContext> properties = partition.eventProperty();
foreach (EsperEPL2GrammarParser.EventPropertyContext property in properties)
{
String propertyName = ASTUtil.GetPropertyName(property, 0);
propertyNames.Add(propertyName);
}
ASTExprHelper.ExprCollectSubNodes(partition, 0, astExprNodeMap); // remove expressions
rawSpecs.Add(new ContextDetailPartitionItem(filterSpec, propertyNames));
}
return(new ContextDetailPartitioned(rawSpecs));
}
// hash
else if (ctx.COALESCE() != null)
{
IList <EsperEPL2GrammarParser.CreateContextCoalesceItemContext> coalesces = ctx.createContextCoalesceItem();
IList <ContextDetailHashItem> rawSpecs = new List <ContextDetailHashItem>(coalesces.Count);
foreach (EsperEPL2GrammarParser.CreateContextCoalesceItemContext coalesce in coalesces)
{
ExprChainedSpec func = ASTLibFunctionHelper.GetLibFunctionChainSpec(coalesce.libFunctionNoClass(), astExprNodeMap);
filterSpec = ASTFilterSpecHelper.WalkFilterSpec(coalesce.eventFilterExpression(), propertyEvalSpec, astExprNodeMap);
propertyEvalSpec = null;
rawSpecs.Add(new ContextDetailHashItem(func, filterSpec));
}
String granularity = ctx.g.Text;
if (!granularity.ToLower().Equals("granularity"))
{
throw ASTWalkException.From("Expected 'granularity' keyword after list of coalesce items, found '" + granularity + "' instead");
}
var num = ASTConstantHelper.Parse(ctx.number());
String preallocateStr = ctx.p != null ? ctx.p.Text : null;
if (preallocateStr != null && !preallocateStr.ToLower().Equals("preallocate"))
{
throw ASTWalkException.From("Expected 'preallocate' keyword after list of coalesce items, found '" + preallocateStr + "' instead");
}
if (!num.GetType().IsNumericNonFP() || num.GetType().GetBoxedType() == typeof(long?))
{
throw ASTWalkException.From("Granularity provided must be an int-type number, received " + num.GetType() + " instead");
}
return(new ContextDetailHash(rawSpecs, num.AsInt(), preallocateStr != null));
}
// categorized
if (ctx.createContextGroupItem() != null)
{
IList <EsperEPL2GrammarParser.CreateContextGroupItemContext> grps = ctx.createContextGroupItem();
IList <ContextDetailCategoryItem> items = new List <ContextDetailCategoryItem>();
foreach (EsperEPL2GrammarParser.CreateContextGroupItemContext grp in grps)
{
ExprNode exprNode = ASTExprHelper.ExprCollectSubNodes(grp, 0, astExprNodeMap)[0];
String name = grp.i.Text;
items.Add(new ContextDetailCategoryItem(exprNode, name));
}
filterSpec = ASTFilterSpecHelper.WalkFilterSpec(ctx.eventFilterExpression(), propertyEvalSpec, astExprNodeMap);
return(new ContextDetailCategory(items, filterSpec));
}
throw new IllegalStateException("Unrecognized context detail type");
}