aboutsummaryrefslogtreecommitdiffstats
path: root/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/state/FilterUtils.java
diff options
context:
space:
mode:
Diffstat (limited to 'feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/state/FilterUtils.java')
-rw-r--r--feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/state/FilterUtils.java96
1 files changed, 96 insertions, 0 deletions
diff --git a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/state/FilterUtils.java b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/state/FilterUtils.java
new file mode 100644
index 00000000..a2da0ea2
--- /dev/null
+++ b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/state/FilterUtils.java
@@ -0,0 +1,96 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2018 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.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.pooling.state;
+
+import java.util.Map;
+import java.util.TreeMap;
+
+/**
+ * Filter Utilities. These methods create <i>TreeMap</i> objects, because they
+ * should only contain a small number of items.
+ */
+public class FilterUtils {
+ // message element names
+ public static final String MSG_CHANNEL = "channel";
+ public static final String MSG_TIMESTAMP = "timestampMs";
+
+ // json element names
+ protected static final String JSON_CLASS = "class";
+ protected static final String JSON_FILTERS = "filters";
+ protected static final String JSON_FIELD = "field";
+ protected static final String JSON_VALUE = "value";
+
+ // values to be stuck into the "class" element
+ protected static final String CLASS_OR = "Or";
+ protected static final String CLASS_AND = "And";
+ protected static final String CLASS_EQUALS = "Equals";
+
+ /**
+ *
+ */
+ private FilterUtils() {
+ super();
+ }
+
+ /**
+ * Makes a filter that verifies that a field equals a value.
+ *
+ * @param field name of the field to check
+ * @param value desired value
+ * @return a map representing an "equals" filter
+ */
+ public static Map<String, Object> makeEquals(String field, String value) {
+ Map<String, Object> map = new TreeMap<>();
+ map.put(JSON_CLASS, CLASS_EQUALS);
+ map.put(JSON_FIELD, field);
+ map.put(JSON_VALUE, value);
+
+ return map;
+ }
+
+ /**
+ * Makes an "and" filter, where all of the items must be true.
+ *
+ * @param items items to be checked
+ * @return an "and" filter
+ */
+ public static Map<String, Object> makeAnd(@SuppressWarnings("unchecked") Map<String, Object>... items) {
+ Map<String, Object> map = new TreeMap<>();
+ map.put(JSON_CLASS, CLASS_AND);
+ map.put(JSON_FILTERS, items);
+
+ return map;
+ }
+
+ /**
+ * Makes an "or" filter, where at least one of the items must be true.
+ *
+ * @param items items to be checked
+ * @return an "or" filter
+ */
+ public static Map<String, Object> makeOr(@SuppressWarnings("unchecked") Map<String, Object>... items) {
+ Map<String, Object> map = new TreeMap<>();
+ map.put(JSON_CLASS, CLASS_OR);
+ map.put(JSON_FILTERS, items);
+
+ return map;
+ }
+}