public TableOnMergeHelper(
StatementContext statementContext,
OnTriggerMergeDesc onTriggerDesc,
EventType triggeringEventType,
String triggeringStreamName,
InternalEventRouter internalEventRouter,
TableMetadata tableMetadata)
throws ExprValidationException {
matched = new ArrayList<TableOnMergeMatch>();
unmatched = new ArrayList<TableOnMergeMatch>();
int count = 1;
boolean hasDeleteAction = false;
boolean hasInsertIntoTableAction = false;
boolean hasUpdateAction = false;
for (OnTriggerMergeMatched matchedItem : onTriggerDesc.getItems()) {
List<TableOnMergeAction> actions = new ArrayList<TableOnMergeAction>();
for (OnTriggerMergeAction item : matchedItem.getActions()) {
try {
if (item instanceof OnTriggerMergeActionInsert) {
OnTriggerMergeActionInsert insertDesc = (OnTriggerMergeActionInsert) item;
TableOnMergeActionIns action =
setupInsert(
tableMetadata,
internalEventRouter,
count,
insertDesc,
triggeringEventType,
triggeringStreamName,
statementContext);
actions.add(action);
hasInsertIntoTableAction = action.isInsertIntoBinding();
} else if (item instanceof OnTriggerMergeActionUpdate) {
OnTriggerMergeActionUpdate updateDesc = (OnTriggerMergeActionUpdate) item;
EventBeanUpdateHelper updateHelper =
EventBeanUpdateHelperFactory.make(
tableMetadata.getTableName(),
tableMetadata.getInternalEventType(),
updateDesc.getAssignments(),
onTriggerDesc.getOptionalAsName(),
triggeringEventType,
false);
ExprEvaluator filterEval =
updateDesc.getOptionalWhereClause() == null
? null
: updateDesc.getOptionalWhereClause().getExprEvaluator();
TableUpdateStrategy tableUpdateStrategy =
statementContext
.getTableService()
.getTableUpdateStrategy(tableMetadata, updateHelper, true);
TableOnMergeActionUpd upd = new TableOnMergeActionUpd(filterEval, tableUpdateStrategy);
actions.add(upd);
statementContext
.getTableService()
.addTableUpdateStrategyReceiver(
tableMetadata, statementContext.getStatementName(), upd, updateHelper, true);
hasUpdateAction = true;
} else if (item instanceof OnTriggerMergeActionDelete) {
OnTriggerMergeActionDelete deleteDesc = (OnTriggerMergeActionDelete) item;
ExprEvaluator filterEval =
deleteDesc.getOptionalWhereClause() == null
? null
: deleteDesc.getOptionalWhereClause().getExprEvaluator();
actions.add(new TableOnMergeActionDel(filterEval));
hasDeleteAction = true;
} else {
throw new IllegalArgumentException(
"Invalid type of merge item '" + item.getClass() + "'");
}
count++;
} catch (ExprValidationException ex) {
boolean isNot = item instanceof OnTriggerMergeActionInsert;
String message =
"Validation failed in when-"
+ (isNot ? "not-" : "")
+ "matched (clause "
+ count
+ "): "
+ ex.getMessage();
throw new ExprValidationException(message, ex);
}
}
if (matchedItem.isMatchedUnmatched()) {
matched.add(new TableOnMergeMatch(matchedItem.getOptionalMatchCond(), actions));
} else {
unmatched.add(new TableOnMergeMatch(matchedItem.getOptionalMatchCond(), actions));
}
}
// since updates may change future secondary keys
requiresWriteLock = hasDeleteAction || hasInsertIntoTableAction || hasUpdateAction;
}
public NamedWindowOnMergeHelper(
StatementContext statementContext,
OnTriggerMergeDesc onTriggerDesc,
EventType triggeringEventType,
String triggeringStreamName,
InternalEventRouter internalEventRouter,
String namedWindowName,
EventTypeSPI namedWindowType)
throws ExprValidationException {
matched = new ArrayList<NamedWindowOnMergeMatch>();
unmatched = new ArrayList<NamedWindowOnMergeMatch>();
int count = 1;
for (OnTriggerMergeMatched matchedItem : onTriggerDesc.getItems()) {
List<NamedWindowOnMergeAction> actions = new ArrayList<NamedWindowOnMergeAction>();
for (OnTriggerMergeAction item : matchedItem.getActions()) {
try {
if (item instanceof OnTriggerMergeActionInsert) {
OnTriggerMergeActionInsert insertDesc = (OnTriggerMergeActionInsert) item;
actions.add(
setupInsert(
namedWindowName,
internalEventRouter,
namedWindowType,
count,
insertDesc,
triggeringEventType,
triggeringStreamName,
statementContext));
} else if (item instanceof OnTriggerMergeActionUpdate) {
OnTriggerMergeActionUpdate updateDesc = (OnTriggerMergeActionUpdate) item;
EventBeanUpdateHelper updateHelper =
EventBeanUpdateHelperFactory.make(
namedWindowName,
namedWindowType,
updateDesc.getAssignments(),
onTriggerDesc.getOptionalAsName(),
triggeringEventType,
true);
ExprEvaluator filterEval =
updateDesc.getOptionalWhereClause() == null
? null
: updateDesc.getOptionalWhereClause().getExprEvaluator();
actions.add(new NamedWindowOnMergeActionUpd(filterEval, updateHelper));
} else if (item instanceof OnTriggerMergeActionDelete) {
OnTriggerMergeActionDelete deleteDesc = (OnTriggerMergeActionDelete) item;
ExprEvaluator filterEval =
deleteDesc.getOptionalWhereClause() == null
? null
: deleteDesc.getOptionalWhereClause().getExprEvaluator();
actions.add(new NamedWindowOnMergeActionDel(filterEval));
} else {
throw new IllegalArgumentException(
"Invalid type of merge item '" + item.getClass() + "'");
}
count++;
} catch (ExprValidationException ex) {
boolean isNot = item instanceof OnTriggerMergeActionInsert;
String message =
"Validation failed in when-"
+ (isNot ? "not-" : "")
+ "matched (clause "
+ count
+ "): "
+ ex.getMessage();
throw new ExprValidationException(message, ex);
}
}
if (matchedItem.isMatchedUnmatched()) {
matched.add(new NamedWindowOnMergeMatch(matchedItem.getOptionalMatchCond(), actions));
} else {
unmatched.add(new NamedWindowOnMergeMatch(matchedItem.getOptionalMatchCond(), actions));
}
}
}