[FLINK-2021] Rework examples to use ParameterTool

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.9
• Fix Version/s: 1.0.0
• Component/s: Examples
• Labels: starter
• Assignee: Stefano Baghino
• Reporter: Robert Metzger
• Created: 15/May/15 12:17
• Updated: 23/Feb/16 18:36
• Resolved: 23/Feb/16 18:36

Description

In FLINK-1525, we introduced the ParameterTool.
We should port the examples to use the tool.

The examples could look like this (we should maybe discuss it first on the mailing lists):

public static void main(String[] args) throws Exception {
    ParameterTool pt = ParameterTool.fromArgs(args);
    boolean fileOutput = pt.getNumberOfParameters() == 2;
    String textPath = null;
    String outputPath = null;
    if(fileOutput) {
        textPath = pt.getRequired("input");
        outputPath = pt.getRequired("output");
    }

    // set up the execution environment
    final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
    env.getConfig().setUserConfig(pt);

Issue Links

• is related to: FLINK-1525 Provide utils to pass -D parameters to UDFs