[debug] add class back to retrigger CI

flink-runtime/src/main/java/org/apache/flink/streaming/api/windowing/time/Time.java

@@ -0,0 +1,139 @@
+/*
+ * 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.flink.streaming.api.windowing.time;
+
+import org.apache.flink.annotation.Public;
+
+import javax.annotation.Nullable;
+
+import java.time.Duration;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/**
+ * The definition of a time interval for windowing. The time characteristic referred to is the
+ * default time characteristic set on the execution environment.
+ *
+ * @deprecated Use {@link Duration}
+ */
+@Deprecated
+@Public
+public final class Time {
+
+    @Nullable
+    public static Duration toDuration(@Nullable Time time) {
+        return time != null ? time.toDuration() : null;
+    }
+
+    @Nullable
+    public static Time of(@Nullable Duration duration) {
+        return duration != null ? Time.milliseconds(duration.toMillis()) : null;
+    }
+
+    /** The time unit for this policy's time interval. */
+    private final TimeUnit unit;
+
+    /** The size of the windows generated by this policy. */
+    private final long size;
+
+    /** Instantiation only via factory method. */
+    private Time(long size, TimeUnit unit) {
+        this.unit = checkNotNull(unit, "time unit may not be null");
+        this.size = size;
+    }
+
+    // ------------------------------------------------------------------------
+    //  Properties
+    // ------------------------------------------------------------------------
+
+    /**
+     * Gets the time unit for this policy's time interval.
+     *
+     * @return The time unit for this policy's time interval.
+     */
+    public TimeUnit getUnit() {
+        return unit;
+    }
+
+    /**
+     * Gets the length of this policy's time interval.
+     *
+     * @return The length of this policy's time interval.
+     */
+    public long getSize() {
+        return size;
+    }
+
+    /**
+     * Converts the time interval to milliseconds.
+     *
+     * @return The time interval in milliseconds.
+     */
+    public long toMilliseconds() {
+        return unit.toMillis(size);
+    }
+
+    public Duration toDuration() {
+        return Duration.ofMillis(this.toMilliseconds());
+    }
+
+    // ------------------------------------------------------------------------
+    //  Factory
+    // ------------------------------------------------------------------------
+
+    /**
+     * Creates a new {@link Time} of the given duration and {@link TimeUnit}.
+     *
+     * <p>The {@code Time} refers to the time characteristic that is set on the dataflow via {@link
+     * org.apache.flink.streaming.api.environment.StreamExecutionEnvironment#setStreamTimeCharacteristic(org.apache.flink.streaming.api.TimeCharacteristic)}.
+     *
+     * @param size The duration of time.
+     * @param unit The unit of time of the duration, for example {@code TimeUnit.SECONDS}.
+     * @return The time policy.
+     */
+    public static Time of(long size, TimeUnit unit) {
+        return new Time(size, unit);
+    }
+
+    /** Creates a new {@link Time} that represents the given number of milliseconds. */
+    public static Time milliseconds(long milliseconds) {
+        return of(milliseconds, TimeUnit.MILLISECONDS);
+    }
+
+    /** Creates a new {@link Time} that represents the given number of seconds. */
+    public static Time seconds(long seconds) {
+        return of(seconds, TimeUnit.SECONDS);
+    }
+
+    /** Creates a new {@link Time} that represents the given number of minutes. */
+    public static Time minutes(long minutes) {
+        return of(minutes, TimeUnit.MINUTES);
+    }
+
+    /** Creates a new {@link Time} that represents the given number of hours. */
+    public static Time hours(long hours) {
+        return of(hours, TimeUnit.HOURS);
+    }
+
+    /** Creates a new {@link Time} that represents the given number of days. */
+    public static Time days(long days) {
+        return of(days, TimeUnit.DAYS);
+    }
+}