[FLINK-2833] [gelly] create a flink-libraries module and move gelly t…

…here

This closes apache#1241

docs/libs/gelly_guide.md

@@ -30,7 +30,7 @@ Gelly is a Graph API for Flink. It contains a set of methods and utilities which
 Using Gelly
 -----------
 
-Gelly is currently part of the *staging* Maven project. All relevant classes are located in the *org.apache.flink.graph* package.
+Gelly is currently part of the *libraries* Maven project. All relevant classes are located in the *org.apache.flink.graph* package.
 
 Add the following dependency to your `pom.xml` to use Gelly.
 
@@ -57,7 +57,7 @@ Add the following dependency to your `pom.xml` to use Gelly.
 
 Note that Gelly is currently not part of the binary distribution. See linking with it for cluster execution [here](../apis/cluster_execution.html#linking-with-modules-not-contained-in-the-binary-distribution).
 
-The remaining sections provide a description of available methods and present several examples of how to use Gelly and how to mix it with the Flink DataSet API. After reading this guide, you might also want to check the {% gh_link /flink-staging/flink-gelly/src/main/java/org/apache/flink/graph/example/ "Gelly examples" %}.
+The remaining sections provide a description of available methods and present several examples of how to use Gelly and how to mix it with the Flink DataSet API. After reading this guide, you might also want to check the {% gh_link /flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/example/ "Gelly examples" %}.
 
 Graph Representation
 -----------
@@ -1194,7 +1194,7 @@ final class UpdateDistance extends ApplyFunction[Long, Double, Double] {
 
 Note that `gather` takes a `Neighbor` type as an argument. This is a convenience type which simply wraps a vertex with its neighboring edge.
 
-For more examples of how to implement algorithms with the Gather-Sum-Apply model, check the {% gh_link /flink-staging/flink-gelly/src/main/java/org/apache/flink/graph/library/GSAPageRank.java "GSAPageRank" %} and {% gh_link /flink-staging/flink-gelly/src/main/java/org/apache/flink/graph/library/GSAConnectedComponents.java "GSAConnectedComponents" %} library methods of Gelly.
+For more examples of how to implement algorithms with the Gather-Sum-Apply model, check the {% gh_link /flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/library/GSAPageRank.java "GSAPageRank" %} and {% gh_link /flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/library/GSAConnectedComponents.java "GSAConnectedComponents" %} library methods of Gelly.
 
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flink-staging/flink-gelly-scala/pom.xml → flink-libraries/flink-gelly-scala/pom.xml

@@ -22,7 +22,7 @@ under the License.
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>org.apache.flink</groupId>
-        <artifactId>flink-staging</artifactId>
+        <artifactId>flink-libraries</artifactId>
         <version>0.10-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>

flink-staging/flink-gelly/pom.xml → flink-libraries/flink-gelly/pom.xml

@@ -24,7 +24,7 @@ under the License.
 
 	<parent>
 		<groupId>org.apache.flink</groupId>
-		<artifactId>flink-staging</artifactId>
+		<artifactId>flink-libraries</artifactId>
 		<version>0.10-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>

flink-libraries/pom.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.apache.flink</groupId>
+		<artifactId>flink-parent</artifactId>
+		<version>0.10-SNAPSHOT</version>
+		<relativePath>..</relativePath>
+	</parent>
+
+	<artifactId>flink-libraries</artifactId>
+	<name>flink-libraries</name>
+	<packaging>pom</packaging>
+
+	<modules>
+		<module>flink-gelly</module>
+		<module>flink-gelly-scala</module>
+	</modules>
+</project>

flink-staging/pom.xml

@@ -40,12 +40,10 @@ under the License.
 		<module>flink-hadoop-compatibility</module>
 		<module>flink-streaming</module>
 		<module>flink-hbase</module>
-		<module>flink-gelly</module>
 		<module>flink-hcatalog</module>
 		<module>flink-table</module>
 		<module>flink-ml</module>
 		<module>flink-language-binding</module>
-		<module>flink-gelly-scala</module>
 		<module>flink-scala-shell</module>
 	</modules>
 

pom.xml

@@ -63,6 +63,7 @@ under the License.
 		<module>flink-tests</module>
 		<module>flink-test-utils</module>
 		<module>flink-staging</module>
+		<module>flink-libraries</module>
 		<module>flink-quickstart</module>
 		<module>flink-contrib</module>
 		<module>flink-dist</module>