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authorjhh <jorge.hernandez-herrero@att.com>2021-01-13 16:34:13 -0600
committerjhh <jorge.hernandez-herrero@att.com>2021-01-14 14:04:07 -0600
commit6d94c4ec33520776971c781c6ea6e80e6d0070b5 (patch)
treea2f11e0235cfcf1d93f69bb78fcdc5d4fa77fbbd /policy-management/src/main/java
parenta98ae0583fc978b8dc345fa89bed10fff4a73222 (diff)
add methods to check if a fact exists.
Issue-ID: POLICY-2762 Signed-off-by: jhh <jorge.hernandez-herrero@att.com> Change-Id: Ic00d2a548dbc904e044d2310c7d5439a1cb708a5 Signed-off-by: jhh <jorge.hernandez-herrero@att.com>
Diffstat (limited to 'policy-management/src/main/java')
-rw-r--r--policy-management/src/main/java/org/onap/policy/drools/controller/DroolsController.java13
-rw-r--r--policy-management/src/main/java/org/onap/policy/drools/controller/internal/MavenDroolsController.java59
-rw-r--r--policy-management/src/main/java/org/onap/policy/drools/controller/internal/NullDroolsController.java12
3 files changed, 68 insertions, 16 deletions
diff --git a/policy-management/src/main/java/org/onap/policy/drools/controller/DroolsController.java b/policy-management/src/main/java/org/onap/policy/drools/controller/DroolsController.java
index 8e78b077..36a4d5bd 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/controller/DroolsController.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/controller/DroolsController.java
@@ -2,7 +2,7 @@
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
- * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2019, 2021 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -233,6 +233,17 @@ public interface DroolsController extends Startable, Lockable {
<T> boolean delete(@NonNull Class<T> fact);
/**
+ * Checks is a fact exists in a given session.
+ */
+ <T> boolean exists(@NonNull String sessionName, @NonNull T fact);
+
+ /**
+ * Checks if a fact exists in any session.
+ */
+ <T> boolean exists(@NonNull T fact);
+
+
+ /**
* halts and permanently releases all resources.
*
*/
diff --git a/policy-management/src/main/java/org/onap/policy/drools/controller/internal/MavenDroolsController.java b/policy-management/src/main/java/org/onap/policy/drools/controller/internal/MavenDroolsController.java
index b8edb55e..c1eb9f37 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/controller/internal/MavenDroolsController.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/controller/internal/MavenDroolsController.java
@@ -2,7 +2,7 @@
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
- * Copyright (C) 2017-2020 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2021 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -870,24 +870,31 @@ public class MavenDroolsController implements DroolsController {
}
@Override
- public <T> boolean delete(@NonNull String sessionName, @NonNull T fact) {
- String factClassName = fact.getClass().getName();
+ public <T> boolean delete(@NonNull String sessionName, @NonNull T objFact) {
+ KieSession kieSession = getSession(sessionName).getKieSession();
- PolicySession session = getSession(sessionName);
- KieSession kieSession = session.getKieSession();
+ // try first to get the object to delete first by reference
+
+ FactHandle quickFact = kieSession.getFactHandle(objFact);
+ if (quickFact != null) {
+ logger.info("Fast delete of {} from {}", objFact, sessionName);
+ kieSession.delete(quickFact);
+ return true;
+ }
+
+ // otherwise, try to the delete the fact associated with the object by scanning all
+ // facts from the same type and performing object equality. The set of facts
+ // is restricted to those of the same type
- Collection<FactHandle> factHandles = kieSession.getFactHandles(new ClassObjectFilter(fact.getClass()));
+ Collection<FactHandle> factHandles = kieSession.getFactHandles(new ClassObjectFilter(objFact.getClass()));
for (FactHandle factHandle : factHandles) {
- try {
- if (Objects.equals(fact, kieSession.getObject(factHandle))) {
- logger.info("Deleting {} from {}", factClassName, sessionName);
- kieSession.delete(factHandle);
- return true;
- }
- } catch (Exception e) {
- logger.warn(FACT_RETRIEVE_ERROR, factHandle, e);
+ if (Objects.equals(objFact, kieSession.getObject(factHandle))) {
+ logger.info("Slow delete of {} of type {} from {}", objFact, sessionName);
+ kieSession.delete(factHandle);
+ return true;
}
}
+
return false;
}
@@ -919,6 +926,30 @@ public class MavenDroolsController implements DroolsController {
return this.getSessionNames().stream().map(ss -> delete(ss, fact)).reduce(false, Boolean::logicalOr);
}
+ @Override
+ public <T> boolean exists(@NonNull String sessionName, @NonNull T objFact) {
+ KieSession kieSession = getSession(sessionName).getKieSession();
+ if (kieSession.getFactHandle(objFact) != null) {
+ return true;
+ }
+
+ // try to find the object by equality comparison instead if it could not be
+ // found by reference
+
+ Collection<FactHandle> factHandles = kieSession.getFactHandles(new ClassObjectFilter(objFact.getClass()));
+ for (FactHandle factHandle : factHandles) {
+ if (Objects.equals(objFact, kieSession.getObject(factHandle))) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ @Override
+ public <T> boolean exists(@NonNull T fact) {
+ return this.getSessionNames().stream().anyMatch(ss -> exists(ss, fact));
+ }
@Override
public Class<?> fetchModelClass(String className) {
diff --git a/policy-management/src/main/java/org/onap/policy/drools/controller/internal/NullDroolsController.java b/policy-management/src/main/java/org/onap/policy/drools/controller/internal/NullDroolsController.java
index 4373b35e..e20d1777 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/controller/internal/NullDroolsController.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/controller/internal/NullDroolsController.java
@@ -2,7 +2,7 @@
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
- * Copyright (C) 2017-2020 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2021 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -214,6 +214,16 @@ public class NullDroolsController implements DroolsController {
return false;
}
+ @Override
+ public <T> boolean exists(@NonNull String sessionName, @NonNull T fact) {
+ return false;
+ }
+
+ @Override
+ public <T> boolean exists(@NonNull T fact) {
+ return false;
+ }
+
private String makeInvokeMsg() {
return this.getClass().getName() + " invoked";
}