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[FLINK-1962] Add Gelly Scala API
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This closes #1004
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@StephanEwen
Pieter-Jan Van Aeken authored and StephanEwen committed Aug 18, 2015
1 parent d2e88ff commit 240e889
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4 changes: 4 additions & 0 deletions flink-scala/src/main/scala/org/apache/flink/api/scala/ExecutionEnvironment.scala
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Expand Up @@ -64,6 +64,10 @@ import scala.reflect.ClassTag
*/
class ExecutionEnvironment(javaEnv: JavaEnv) {

/**
* @return the Java Execution environment.
*/
def getJavaEnv: JavaEnv = javaEnv
/**
* Gets the config object.
*/
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198 changes: 198 additions & 0 deletions flink-staging/flink-gelly-scala/pom.xml
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@@ -0,0 +1,198 @@
<?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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>flink-staging</artifactId>
<groupId>org.apache.flink</groupId>
<version>0.10-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>

<artifactId>flink-gelly-scala</artifactId>

<packaging>jar</packaging>

<dependencies>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-scala</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-clients</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-gelly</artifactId>
<version>${project.version}</version>
</dependency>

<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-test-utils</artifactId>
<version>${project.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
</dependencies>

<build>
<plugins>
<!-- Scala Compiler -->
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.1.4</version>
<executions>
<!-- Run scala compiler in the process-resources phase, so that dependencies on
scala classes can be resolved later in the (Java) compile phase -->
<execution>
<id>scala-compile-first</id>
<phase>process-resources</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>

<!-- Run scala compiler in the process-test-resources phase, so that dependencies on
scala classes can be resolved later in the (Java) test-compile phase -->
<execution>
<id>scala-test-compile</id>
<phase>process-test-resources</phase>
<goals>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<jvmArgs>
<jvmArg>-Xms128m</jvmArg>
<jvmArg>-Xmx512m</jvmArg>
</jvmArgs>
<compilerPlugins combine.children="append">
<compilerPlugin>
<groupId>org.scalamacros</groupId>
<artifactId>paradise_${scala.version}</artifactId>
<version>${scala.macros.version}</version>
</compilerPlugin>
</compilerPlugins>
</configuration>
</plugin>

<!-- Eclipse Integration -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.8</version>
<configuration>
<downloadSources>true</downloadSources>
<projectnatures>
<projectnature>org.scala-ide.sdt.core.scalanature</projectnature>
<projectnature>org.eclipse.jdt.core.javanature</projectnature>
</projectnatures>
<buildcommands>
<buildcommand>org.scala-ide.sdt.core.scalabuilder</buildcommand>
</buildcommands>
<classpathContainers>
<classpathContainer>org.scala-ide.sdt.launching.SCALA_CONTAINER</classpathContainer>
<classpathContainer>org.eclipse.jdt.launching.JRE_CONTAINER</classpathContainer>
</classpathContainers>
<excludes>
<exclude>org.scala-lang:scala-library</exclude>
<exclude>org.scala-lang:scala-compiler</exclude>
</excludes>
<sourceIncludes>
<sourceInclude>**/*.scala</sourceInclude>
<sourceInclude>**/*.java</sourceInclude>
</sourceIncludes>
</configuration>
</plugin>

<!-- Adding scala source directories to build path -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<!-- Add src/main/scala to eclipse build path -->
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>src/main/scala</source>
</sources>
</configuration>
</execution>
<!-- Add src/test/scala to eclipse build path -->
<execution>
<id>add-test-source</id>
<phase>generate-test-sources</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>src/test/scala</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>

<plugin>
<groupId>org.scalastyle</groupId>
<artifactId>scalastyle-maven-plugin</artifactId>
<version>0.5.0</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
<configuration>
<verbose>false</verbose>
<failOnViolation>true</failOnViolation>
<includeTestSourceDirectory>true</includeTestSourceDirectory>
<failOnWarning>false</failOnWarning>
<sourceDirectory>${basedir}/src/main/scala</sourceDirectory>
<testSourceDirectory>${basedir}/src/test/scala</testSourceDirectory>
<configLocation>${project.basedir}/../../tools/maven/scalastyle-config.xml</configLocation>
<outputFile>${project.basedir}/scalastyle-output.xml</outputFile>
<outputEncoding>UTF-8</outputEncoding>
</configuration>
</plugin>
</plugins>
</build>

</project>
35 changes: 35 additions & 0 deletions ...staging/flink-gelly-scala/src/main/scala/org/apache/flink/graph/scala/EdgesFunction.scala
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@@ -0,0 +1,35 @@
/*
* 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.graph.scala

import org.apache.flink.api.java.tuple.Tuple2
import org.apache.flink.graph.Edge
import org.apache.flink.util.Collector

abstract class EdgesFunction[K, EV, T] extends org.apache.flink.graph.EdgesFunction[K, EV, T] {

def iterateEdges(edges: Iterable[(K, Edge[K, EV])], out: Collector[T])

override def iterateEdges(edges: java.lang.Iterable[Tuple2[K, Edge[K, EV]]], out:
Collector[T]): Unit = {
val scalaIterable = scala.collection.JavaConversions.iterableAsScalaIterable(edges)
.map(jtuple => (jtuple.f0, jtuple.f1))
iterateEdges(scalaIterable, out)
}
}
33 changes: 33 additions & 0 deletions ...elly-scala/src/main/scala/org/apache/flink/graph/scala/EdgesFunctionWithVertexValue.scala
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@@ -0,0 +1,33 @@
/*
* 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.graph.scala

import org.apache.flink.graph.{Edge, Vertex}
import org.apache.flink.util.Collector

abstract class EdgesFunctionWithVertexValue[K, VV, EV, T] extends org.apache.flink.graph
.EdgesFunctionWithVertexValue[K, VV, EV, T] {
@throws(classOf[Exception])
def iterateEdges(v: Vertex[K, VV], edges: Iterable[Edge[K, EV]], out: Collector[T])

override def iterateEdges(v: Vertex[K, VV], edges: java.lang.Iterable[Edge[K, EV]], out:
Collector[T]) = {
iterateEdges(v, scala.collection.JavaConversions.iterableAsScalaIterable(edges), out)
}
}

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