Roannel Fernández Hernández created NUTCH-2688:
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Summary: Unify the licence headers
Key: NUTCH-2688
URL: https://issues.apache.org/jira/browse/NUTCH-2688
Project: Nutch
Issue Type: Improvement
Affects Versions: 1.15
Reporter: Roannel Fernández Hernández
Assignee: Roannel Fernández Hernández
Fix For: 1.16
Sometimes the licence headers are written in .java classes in a javadoc comment
(/** licence \*/), sometimes in a block comment (/* licence \*/), and sometimes
is a javadoc comment but with several * (/**** licence */). The idea is to
reach an understanding on how the licence headers should be written on .java
files.
According to a visual inspection, other Apache Java-based projects use two
aproaches mainly: javadoc comment and block comment. For example:
[Solr-lucene|https://github.com/apache/lucene-solr],
[Tika|https://github.com/apache/tika], [Spark|https://github.com/apache/spark]
use the block comment way, while [Hadoop|https://github.com/apache/hadoop] uses
javadoc comment.
To avoid to confuse the licence header with a javadoc comment and it doesn't
look like a dangling javadoc comment (since javadoc comments must to be
inserted above a class declaration, a method declaration, or a field
declaration), I propose use the block comment for writing the licence header in
all .java classes. There must not be an empty line between the licence header
and the package declaration, unless it is a package comment file with package
comments.
For .java classes the licence header looks like:
{code:java}
/*
* 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.nutch;
{code}
For a package comment file:
{code:java}
/*
* 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 comments here.
*/
package org.apache.nutch;
{code}
What do you think guys?
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