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https://issues.apache.org/jira/browse/APEXMALHAR-2082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15286320#comment-15286320
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ASF GitHub Bot commented on APEXMALHAR-2082:
--------------------------------------------
Github user pradeepdalvi commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/270#discussion_r63494078
--- Diff: library/src/test/java/com/datatorrent/lib/filter/FilterTest.java
---
@@ -0,0 +1,165 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+package com.datatorrent.lib.filter;
+
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Tests for FilterOperator
+ */
+public class FilterTest
+{
+ private static final Logger logger =
LoggerFactory.getLogger(FilterTest.class);
+
+ public static class DummyPrivatePOJO
+ {
+ private long val;
+
+ public long getVal()
+ {
+ return val;
+ }
+
+ public void setVal(long val)
+ {
+ this.val = val;
+ }
+ }
+
+ public static class DummyPublicPOJO
+ {
+ public long val;
+ }
+
+
+ private static FilterOperator filter;
+ private static DummyPrivatePOJO data;
+ private static DummyPublicPOJO pdata;
+
+ @Test
+ public void testFilterPrivate()
+ {
+ filter.inClazz = DummyPrivatePOJO.class;
+ filter.setCondition("({$}.getVal() == 100)");
+ filter.activate(null);
+
+ /* when condition is true */
+ logger.debug("start round 0");
+ filter.beginWindow(0);
+
+ data.setVal(100);
+ filter.input.process(data);
--- End diff --
Done
> Data Filter Operator
> ---------------------
>
> Key: APEXMALHAR-2082
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2082
> Project: Apache Apex Malhar
> Issue Type: New Feature
> Reporter: Pradeep A Dalvi
>
> Data Filter Operator which will allow apex users to filter (select/drop)
> tuples based on the certain condition from incoming stream.
> Use case:
> -------------
> In many cases, not all tuples are of interest for the downstream operators.
> In such cases, one may want select/filter out tuples to downstream. Also one
> may want to process tuples which did not meet the condition/expression.
> Functionality:
> -----------------
> 1. Any tuple for which expression could not be evaluated shall be emitted on
> error output port.
> 2. Filter operator shall receive POJO as input tuple and emit POJO on either
> of remaining output ports i.e. truePort and falsePort. As the output ports'
> name signify, when condition is met then the POJO shall be emitted on
> truePort and if condition is not met then that POJO shall be emitted on
> falsePort.
> 3. Operator needs condition/expression as a input param. This condition is
> based on expression language support we already have in Malhar.
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