ApacheFlink导入scala api流扩展

Question

我正在尝试为ApacheFlink导入ScalaAPI流扩展，如中所述https://ci.apache.org/projects/flink/flink-docs-master/apis/scala_api_extensions.html

但是，我的ScalaIDE抱怨以下消息：对象扩展不是包的成员org.apache.flink.streaming.api.scala

我使用的是scala 2.11和Flink 1.0.1。

这是我的导入声明：导入组织。阿帕奇。Flink。流动。应用程序编程接口。斯卡拉。扩展_

这是我的pom。xml:

<!--
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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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.myorg.quickstart</groupId>
    <artifactId>quickstart</artifactId>
    <version>0.1</version>
    <packaging>jar</packaging>

    <name>Flink Quickstart Job</name>
    <url>http://www.myorganization.org</url>

    <repositories>
        <repository>
            <id>apache.snapshots</id>
            <name>Apache Development Snapshot Repository</name>
            <url>https://repository.apache.org/content/repositories/snapshots/</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <flink.version>1.0.1</flink.version>
    </properties>

    <!-- 

        Execute "mvn clean package -Pbuild-jar"
        to build a jar file out of this project!

        How to use the Flink Quickstart pom:

        a) Adding new dependencies:
            You can add dependencies to the list below.
            Please check if the maven-shade-plugin below is filtering out your dependency
            and remove the exclude from there.

        b) Build a jar for running on the cluster:
            There are two options for creating a jar from this project

            b.1) "mvn clean package" -> this will create a fat jar which contains all
                    dependencies necessary for running the jar created by this pom in a cluster.
                    The "maven-shade-plugin" excludes everything that is provided on a running Flink cluster.

            b.2) "mvn clean package -Pbuild-jar" -> This will also create a fat-jar, but with much
                    nicer dependency exclusion handling. This approach is preferred and leads to
                    much cleaner jar files.
    -->

    <dependencies>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-scala_2.11</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-scala_2.11</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-clients_2.11</artifactId>
            <version>${flink.version}</version>
        </dependency>
    </dependencies>

    <profiles>
        <profile>
            <!-- Profile for packaging correct JAR files -->
            <id>build-jar</id>
            <activation>
                <activeByDefault>false</activeByDefault>
            </activation>
            <dependencies>
                <dependency>
                    <groupId>org.apache.flink</groupId>
                    <artifactId>flink-scala_2.10</artifactId>
                    <version>${flink.version}</version>
                    <scope>provided</scope>
                </dependency>
                <dependency>
                    <groupId>org.apache.flink</groupId>
                    <artifactId>flink-streaming-scala_2.10</artifactId>
                    <version>${flink.version}</version>
                    <scope>provided</scope>
                </dependency>
                <dependency>
                    <groupId>org.apache.flink</groupId>
                    <artifactId>flink-clients_2.10</artifactId>
                    <version>${flink.version}</version>
                    <scope>provided</scope>
                </dependency>
            </dependencies>

            <build>
                <plugins>
                    <!-- disable the exclusion rules -->
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-shade-plugin</artifactId>
                        <version>2.4.1</version>
                        <executions>
                            <execution>
                                <phase>package</phase>
                                <goals>
                                    <goal>shade</goal>
                                </goals>
                                <configuration>
                                    <artifactSet>
                                        <excludes combine.self="override"></excludes>
                                    </artifactSet>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>

    <!-- We use the maven-assembly plugin to create a fat jar that contains all dependencies
        except flink and its transitive dependencies. The resulting fat-jar can be executed
        on a cluster. Change the value of Program-Class if your program entry point changes. -->
    <build>
        <plugins>
            <!-- We use the maven-shade plugin to create a fat jar that contains all dependencies
            except flink and it's transitive dependencies. The resulting fat-jar can be executed
            on a cluster. Change the value of Program-Class if your program entry point changes. -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.4.1</version>
                <executions>
                    <!-- Run shade goal on package phase -->
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <artifactSet>
                                <excludes>
                                    <!-- This list contains all dependencies of flink-dist
                                    Everything else will be packaged into the fat-jar
                                    -->
                                    <exclude>org.apache.flink:flink-annotations</exclude>
                                    <exclude>org.apache.flink:flink-shaded-hadoop1</exclude>
                                    <exclude>org.apache.flink:flink-shaded-hadoop2</exclude>
                                    <exclude>org.apache.flink:flink-shaded-curator-recipes</exclude>
                                    <exclude>org.apache.flink:flink-core</exclude>
                                    <exclude>org.apache.flink:flink-java</exclude>
                                    <exclude>org.apache.flink:flink-scala_2.10</exclude>
                                    <exclude>org.apache.flink:flink-runtime_2.10</exclude>
                                    <exclude>org.apache.flink:flink-optimizer_2.10</exclude>
                                    <exclude>org.apache.flink:flink-clients_2.10</exclude>
                                    <exclude>org.apache.flink:flink-avro_2.10</exclude>
                                    <exclude>org.apache.flink:flink-examples-batch_2.10</exclude>
                                    <exclude>org.apache.flink:flink-examples-streaming_2.10</exclude>
                                    <exclude>org.apache.flink:flink-streaming-java_2.10</exclude>

                                    <!-- Also exclude very big transitive dependencies of Flink

                                    WARNING: You have to remove these excludes if your code relies on other
                                    versions of these dependencies.

                                    -->

                                    <exclude>org.scala-lang:scala-library</exclude>
                                    <exclude>org.scala-lang:scala-compiler</exclude>
                                    <exclude>org.scala-lang:scala-reflect</exclude>
                                    <exclude>com.amazonaws:aws-java-sdk</exclude>
                                    <exclude>com.typesafe.akka:akka-actor_*</exclude>
                                    <exclude>com.typesafe.akka:akka-remote_*</exclude>
                                    <exclude>com.typesafe.akka:akka-slf4j_*</exclude>
                                    <exclude>io.netty:netty-all</exclude>
                                    <exclude>io.netty:netty</exclude>
                                    <exclude>commons-fileupload:commons-fileupload</exclude>
                                    <exclude>org.apache.avro:avro</exclude>
                                    <exclude>commons-collections:commons-collections</exclude>
                                    <exclude>com.thoughtworks.paranamer:paranamer</exclude>
                                    <exclude>org.xerial.snappy:snappy-java</exclude>
                                    <exclude>org.apache.commons:commons-compress</exclude>
                                    <exclude>org.tukaani:xz</exclude>
                                    <exclude>com.esotericsoftware.kryo:kryo</exclude>
                                    <exclude>com.esotericsoftware.minlog:minlog</exclude>
                                    <exclude>org.objenesis:objenesis</exclude>
                                    <exclude>com.twitter:chill_*</exclude>
                                    <exclude>com.twitter:chill-java</exclude>
                                    <exclude>com.twitter:chill-avro_*</exclude>
                                    <exclude>com.twitter:chill-bijection_*</exclude>
                                    <exclude>com.twitter:bijection-core_*</exclude>
                                    <exclude>com.twitter:bijection-avro_*</exclude>
                                    <exclude>commons-lang:commons-lang</exclude>
                                    <exclude>junit:junit</exclude>
                                    <exclude>de.javakaffee:kryo-serializers</exclude>
                                    <exclude>joda-time:joda-time</exclude>
                                    <exclude>org.apache.commons:commons-lang3</exclude>
                                    <exclude>org.slf4j:slf4j-api</exclude>
                                    <exclude>org.slf4j:slf4j-log4j12</exclude>
                                    <exclude>log4j:log4j</exclude>
                                    <exclude>org.apache.commons:commons-math</exclude>
                                    <exclude>org.apache.sling:org.apache.sling.commons.json</exclude>
                                    <exclude>commons-logging:commons-logging</exclude>
                                    <exclude>commons-codec:commons-codec</exclude>
                                    <exclude>com.fasterxml.jackson.core:jackson-core</exclude>
                                    <exclude>com.fasterxml.jackson.core:jackson-databind</exclude>
                                    <exclude>com.fasterxml.jackson.core:jackson-annotations</exclude>
                                    <exclude>stax:stax-api</exclude>
                                    <exclude>com.typesafe:config</exclude>
                                    <exclude>org.uncommons.maths:uncommons-maths</exclude>
                                    <exclude>com.github.scopt:scopt_*</exclude>
                                    <exclude>commons-io:commons-io</exclude>
                                    <exclude>commons-cli:commons-cli</exclude>
                                </excludes>
                            </artifactSet>
                            <filters>
                                <filter>
                                    <artifact>org.apache.flink:*</artifact>
                                    <excludes>
                                        <!-- exclude shaded google but include shaded curator -->
                                        <exclude>org/apache/flink/shaded/com/**</exclude>
                                        <exclude>web-docs/**</exclude>
                                    </excludes>
                                </filter>
                                <filter>
                                    <!-- Do not copy the signatures in the META-INF folder.
                                    Otherwise, this might cause SecurityExceptions when using the JAR. -->
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                            <transformers>
                                <!-- add Main-Class to manifest file -->
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>org.myorg.quickstart.Job</mainClass>
                                </transformer>
                            </transformers>
                            <createDependencyReducedPom>false</createDependencyReducedPom>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>net.alchim31.maven</groupId>
                <artifactId>scala-maven-plugin</artifactId>
                <version>3.1.4</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </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>
        </plugins>
    </build>
</project>

Answer 1

从版本1.1开始，Scala API扩展只是Flink的一部分。因此，为了测试它们，您现在必须使用版本1.1-SNAPSHOT。