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From GitBox <...@apache.org>
Subject [GitHub] [ignite] dgarus commented on a change in pull request #6923: IGNITE-12214: Continuous query system view.
Date Thu, 03 Oct 2019 11:06:37 GMT
dgarus commented on a change in pull request #6923: IGNITE-12214: Continuous query system view.
URL: https://github.com/apache/ignite/pull/6923#discussion_r330950617
 
 

 ##########
 File path: modules/core/src/main/java/org/apache/ignite/spi/systemview/view/ContinuousQueryView.java
 ##########
 @@ -0,0 +1,213 @@
+/*
+ * 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 org.apache.ignite.spi.systemview.view;
+
+import java.util.UUID;
+import javax.cache.configuration.Factory;
+import javax.cache.event.CacheEntryUpdatedListener;
+import org.apache.ignite.IgniteCache;
+import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.cache.CacheEntryEventSerializableFilter;
+import org.apache.ignite.cache.query.ContinuousQuery;
+import org.apache.ignite.cache.query.ContinuousQueryWithTransformer;
+import org.apache.ignite.internal.managers.systemview.walker.Order;
+import org.apache.ignite.internal.processors.cache.query.continuous.CacheContinuousQueryHandler;
+import org.apache.ignite.internal.processors.continuous.GridContinuousHandler;
+import org.apache.ignite.internal.processors.continuous.GridContinuousProcessor.RoutineInfo;
+
+import static org.apache.ignite.internal.util.IgniteUtils.toStringSafe;
+
+/**
+ * Continuous query representation for a {@link SystemView}.
+ */
+public class ContinuousQueryView {
+    /** Routine info. */
+    private final RoutineInfo qry;
+
+    /** Continuous query handler. */
+    private final GridContinuousHandler hnd;
+
+    /** Routine id. */
+    private final UUID routineId;
+
+    /**
+     * @param routineId Routine id.
+     * @param qry Query info.
+     */
+    public ContinuousQueryView(UUID routineId, RoutineInfo qry) {
+        this.qry = qry;
+        this.hnd = qry.handler();
+        this.routineId = routineId;
+    }
+
+    /** @return Continuous query id. */
+    public UUID routineId() {
+        return routineId;
+    }
+
+    /** @return Node id. */
+    public UUID nodeId() {
+        return qry.nodeId();
+    }
+
+    /** @return Cache name. */
+    @Order
+    public String cacheName() {
+        return hnd.cacheName();
+    }
+
+    /** @return Topic for continuous query messages. */
+    public String topic() {
+        return toStringSafe(hnd.orderedTopic());
+    }
+
+    /** @return Buffer size. */
+    public int bufferSize() {
+        return qry.bufferSize();
+    }
+
+    /** @return Notify interval. */
+    public long interval() {
+        return qry.interval();
+    }
+
+    /** @return Auto unsubscribe flag value. */
+    public boolean autoUnsubscribe() {
+        return qry.autoUnsubscribe();
+    }
+
+    /** @return {@code True} if continuous query registered to receive events. */
+    public boolean isEvents() {
+        return hnd.isEvents();
+    }
+
+    /** @return {@code True} if continuous query registered for messaging. */
+    public boolean isMessaging() {
+        return hnd.isMessaging();
+    }
+
+    /** @return {@code True} if regular continuous query. */
+    public boolean isQuery() {
+        return hnd.isQuery();
+    }
+
+    /**
+     * @return {@code True} if {@code keepBinary} mode enabled.
+     * @see IgniteCache#withKeepBinary()
+     */
+    public boolean keepBinary() {
+        return hnd.keepBinary();
+    }
+
+    /** @return {@code True} if continuous query should receive notification for existing
entries. */
+    public boolean notifyExisting() {
+        CacheContinuousQueryHandler hnd0 = cacheHandler();
+
+        return hnd0 != null && hnd0.notifyExisting();
+    }
+
+    /** @return {@code True} if old value required for listener. */
+    public boolean oldValueRequired() {
+        CacheContinuousQueryHandler hnd0 = cacheHandler();
+
+        return hnd0 != null && hnd0.oldValueRequired();
+    }
+
+    /** @return Last send time. */
+    @Order(5)
+    public long lastSendTime() {
+        return qry.lastSendTime();
+    }
+
+    /** @return Delayed register flag. */
+    public boolean delayedRegister() {
+        return qry.delayedRegister();
+    }
+
+    /**
+     * @return Class name of the local transformed listener.
+     * @see ContinuousQuery#setLocalListener(CacheEntryUpdatedListener)
+     */
+    @Order(1)
+    public String localListener() {
+        CacheContinuousQueryHandler hnd0 = cacheHandler();
+
+        if (hnd0 == null || hnd0.localListener() == null)
+            return null;
+
+        return toStringSafe(hnd0.localListener());
+    }
+
+    /**
+     * @return String representation of remote filter.
+     * @see ContinuousQuery#setRemoteFilter(CacheEntryEventSerializableFilter)
+     * @see ContinuousQuery#setRemoteFilterFactory(Factory)
+     */
+    @Order(2)
+    public String remoteFilter() {
+        CacheContinuousQueryHandler hnd0 = cacheHandler();
+
+        try {
+            if (hnd0 == null || hnd0.getEventFilter() == null)
+                return null;
+
+            return toStringSafe(hnd0.getEventFilter());
+        }
+        catch (IgniteCheckedException e) {
+            return null;
+        }
+    }
+
+    /**
+     * @return String representation of remote transformer.
 
 Review comment:
   Class name of ...

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