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https://issues.apache.org/jira/browse/FLINK-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14501433#comment-14501433
]
Chesnay Schepler commented on FLINK-1910:
-----------------------------------------
This is what i meant by saving the LinkedList inside your filter function:
{code:java}
public static class MyFilter implements FilterFunction<Customer>{
private List list = new LinkedList(values);
@Override
public boolean filter(Customer c)
{ return c.getField(4).equals(list.get(0).toString()) &&
c.getField(2).equals(list.get(1).toString()) ; }
});
customers = customers.filter(new MyFilter())
{code}
BroadcastVariables are used to provide a set of values at an operator at
runtime. For more information on broadcast variables, refer to the
documentation:
http://ci.apache.org/projects/flink/flink-docs-master/programming_guide.html#broadcast-variables
> why this code flink not reurn value when use variable in filter
> ---------------------------------------------------------------
>
> Key: FLINK-1910
> URL: https://issues.apache.org/jira/browse/FLINK-1910
> Project: Flink
> Issue Type: Bug
> Reporter: hagersaleh
>
> {code:java}
> public static LinkedList values=new LinkedList<String>();
> public static void main(String[] args) throws Exception
> {
> values.add("AUTOMOBILE");
> values.add("XSTf4&&NCwDVaWNe6tEgvwfmRchLXak");
> ExecutionEnvironment env =
> ExecutionEnvironment.getExecutionEnvironment();
> DataSet<Customer> customers = getCustomerDataSet(env);
> customers = customers.filter(
> new FilterFunction<Customer>() {
> @Override
> public boolean filter(Customer c) {
> return c.getField(4).equals(values.get(0).toString()) &&
> c.getField(2).equals(values.get(1).toString()) ;
> }
> });
> System.out.println(customers.print());
> customers.writeAsCsv("/home/hadoop/Desktop/Dataset/output.csv", "\n",
> "|");
> env.execute();
> }
> public static class Customer extends Tuple5<Long,String,String,String,String>
> {
> }
> private static DataSet<Customer> getCustomerDataSet(ExecutionEnvironment env)
> {
> return env.readCsvFile("/home/hadoop/Desktop/Dataset/customer.csv")
> .fieldDelimiter('|')
> .includeFields("11100110").ignoreFirstLine()
> .tupleType(Customer.class);
> }
> {code}
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