This is an automated email from the ASF dual-hosted git repository. guoweijie pushed a commit to branch process-func-api-poc-weijie in repository https://gitbox.apache.org/repos/asf/flink.git
commit 82a01017c6f4b9acf37466f892624c7401c2b4f3 Author: Xintong Song <[email protected]> AuthorDate: Tue May 30 19:41:02 2023 +0800 Introduce ExecutionEnvironment, whose implementation can be obtained from API via reflection. --- .../processfunction/api/ExecutionEnvironment.java | 31 +++++++++++++++++++++ .../flink/processfunction/examples/SimpleMap.java | 28 +++++++++++++++++++ .../processfunction/ExecutionEnvironmentImpl.java | 32 ++++++++++++++++++++++ 3 files changed, 91 insertions(+) diff --git a/flink-process-function-api/src/main/java/org/apache/flink/processfunction/api/ExecutionEnvironment.java b/flink-process-function-api/src/main/java/org/apache/flink/processfunction/api/ExecutionEnvironment.java new file mode 100644 index 00000000000..a13d60d9385 --- /dev/null +++ b/flink-process-function-api/src/main/java/org/apache/flink/processfunction/api/ExecutionEnvironment.java @@ -0,0 +1,31 @@ +/* + * 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.processfunction.api; + +public abstract class ExecutionEnvironment { + public static ExecutionEnvironment getExecutionEnvironment() + throws ReflectiveOperationException { + return (ExecutionEnvironment) + Class.forName("org.apache.flink.processfunction.ExecutionEnvironmentImpl") + .getMethod("newInstance") + .invoke(null); + } + + public abstract void foo(); +} diff --git a/flink-process-function-examples/src/main/java/org/apache/flink/processfunction/examples/SimpleMap.java b/flink-process-function-examples/src/main/java/org/apache/flink/processfunction/examples/SimpleMap.java new file mode 100644 index 00000000000..531b87e214e --- /dev/null +++ b/flink-process-function-examples/src/main/java/org/apache/flink/processfunction/examples/SimpleMap.java @@ -0,0 +1,28 @@ +/* + * 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.processfunction.examples; + +import org.apache.flink.processfunction.api.ExecutionEnvironment; + +/** Usage: Must be executed with flink-process-function jar in classpath. */ +public class SimpleMap { + public static void main(String[] args) throws Exception { + ExecutionEnvironment.getExecutionEnvironment().foo(); + } +} diff --git a/flink-process-function/src/main/java/org/apache/flink/processfunction/ExecutionEnvironmentImpl.java b/flink-process-function/src/main/java/org/apache/flink/processfunction/ExecutionEnvironmentImpl.java new file mode 100644 index 00000000000..8ea8f33a093 --- /dev/null +++ b/flink-process-function/src/main/java/org/apache/flink/processfunction/ExecutionEnvironmentImpl.java @@ -0,0 +1,32 @@ +/* + * 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.processfunction; + +import org.apache.flink.processfunction.api.ExecutionEnvironment; + +public class ExecutionEnvironmentImpl extends ExecutionEnvironment { + public static ExecutionEnvironmentImpl newInstance() { + return new ExecutionEnvironmentImpl(); + } + + @Override + public void foo() { + System.out.println(getClass().getSimpleName()); + } +}
