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author | Wenchen Fan <cloud0fan@outlook.com> | 2015-07-08 10:51:32 -0700 |
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committer | Reynold Xin <rxin@databricks.com> | 2015-07-08 10:51:32 -0700 |
commit | 0ba98c04c726a827df8cb19b0db17c352a647960 (patch) | |
tree | 5d12dde981c3abe0fde63702e60fa2c4693f6ab0 /unsafe | |
parent | 74335b31072951244967f878d8b766cd1bfc2ac6 (diff) | |
download | spark-0ba98c04c726a827df8cb19b0db17c352a647960.tar.gz spark-0ba98c04c726a827df8cb19b0db17c352a647960.tar.bz2 spark-0ba98c04c726a827df8cb19b0db17c352a647960.zip |
[SPARK-8753][SQL] Create an IntervalType data type
We need a new data type to represent time intervals. Because we can't determine how many days in a month, so we need 2 values for interval: a int `months`, a long `microseconds`.
The interval literal syntax looks like:
`interval 3 years -4 month 4 weeks 3 second`
Because we use number of 100ns as value of `TimestampType`, so it may not makes sense to support nano second unit.
Author: Wenchen Fan <cloud0fan@outlook.com>
Closes #7226 from cloud-fan/interval and squashes the following commits:
632062d [Wenchen Fan] address comments
ac348c3 [Wenchen Fan] use case class
0342d2e [Wenchen Fan] use array byte
df9256c [Wenchen Fan] fix style
fd6f18a [Wenchen Fan] address comments
1856af3 [Wenchen Fan] support interval type
Diffstat (limited to 'unsafe')
-rw-r--r-- | unsafe/src/main/java/org/apache/spark/unsafe/types/Interval.java | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/unsafe/src/main/java/org/apache/spark/unsafe/types/Interval.java b/unsafe/src/main/java/org/apache/spark/unsafe/types/Interval.java new file mode 100644 index 0000000000..3eb67ede06 --- /dev/null +++ b/unsafe/src/main/java/org/apache/spark/unsafe/types/Interval.java @@ -0,0 +1,47 @@ +/* + * 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.spark.unsafe.types; + +import java.io.Serializable; + +/** + * The internal representation of interval type. + */ +public final class Interval implements Serializable { + public final int months; + public final long microseconds; + + public Interval(int months, long microseconds) { + this.months = months; + this.microseconds = microseconds; + } + + @Override + public boolean equals(Object other) { + if (this == other) return true; + if (other == null || !(other instanceof Interval)) return false; + + Interval o = (Interval) other; + return this.months == o.months && this.microseconds == o.microseconds; + } + + @Override + public int hashCode() { + return 31 * months + (int) microseconds; + } +} |