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author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:15:21 -0700 |
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committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:15:21 -0700 |
commit | 13d05bc8458758ee39cb829098241e89616717ee (patch) | |
tree | 22a4d1ce65f15952f07a3df5af4b462b4697cb3a /framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/impl/Timestamped.java | |
parent | 6139282e1e93c2322076de4b91b1c85d0bc4a8b3 (diff) |
ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60
Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd
Diffstat (limited to 'framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/impl/Timestamped.java')
-rw-r--r-- | framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/impl/Timestamped.java | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/impl/Timestamped.java b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/impl/Timestamped.java new file mode 100644 index 00000000..ae7267b8 --- /dev/null +++ b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/impl/Timestamped.java @@ -0,0 +1,119 @@ +/* + * Copyright 2014-2015 Open Networking Laboratory + * + * 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. + */ +package org.onosproject.store.impl; + +import com.google.common.base.MoreObjects; +import org.onosproject.store.Timestamp; + +import java.util.Objects; + +import static com.google.common.base.Preconditions.checkNotNull; + +/** + * Wrapper class to store Timestamped value. + * + * @param <T> Timestamped value type + */ +public final class Timestamped<T> { + + private final Timestamp timestamp; + private final T value; + + /** + * Creates a time stamped value. + * + * @param value to be timestamp + * @param timestamp the timestamp + */ + public Timestamped(T value, Timestamp timestamp) { + this.value = checkNotNull(value); + this.timestamp = checkNotNull(timestamp); + } + + /** + * Returns the value. + * + * @return value + */ + public T value() { + return value; + } + + /** + * Returns the time stamp. + * + * @return time stamp + */ + public Timestamp timestamp() { + return timestamp; + } + + /** + * Tests if this timestamped value is newer than the other. + * + * @param other timestamped value + * @return true if this instance is newer. + */ + public boolean isNewer(Timestamped<T> other) { + return isNewerThan(checkNotNull(other).timestamp()); + } + + /** + * Tests if this timestamp is newer than the specified timestamp. + * + * @param other timestamp to compare against + * @return true if this instance is newer + */ + public boolean isNewerThan(Timestamp other) { + return timestamp.isNewerThan(other); + } + + @Override + public int hashCode() { + return timestamp.hashCode(); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (!(obj instanceof Timestamped)) { + return false; + } + @SuppressWarnings("unchecked") + Timestamped<T> that = (Timestamped<T>) obj; + return Objects.equals(this.timestamp, that.timestamp); + } + + @Override + public String toString() { + return MoreObjects.toStringHelper(getClass()) + .add("timestamp", timestamp) + .add("value", value) + .toString(); + } + + // Default constructor for serialization + /** + * @deprecated in Cardinal Release + */ + @Deprecated + private Timestamped() { + this.value = null; + this.timestamp = null; + } +} |