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retainAll() / addAll() on collection dynamically depending on query

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hallo jungs,

ich hoff ihr könnt mir helfen:

import java.util.HashSet;

import java.util.Set;

public class Query {

public static void main(String[] args) {

Set red = new HashSet<Integer>();

red.add(1); red.add(2); red.add(3);

Set green = new HashSet<Integer>();

green.add(3); green.add(4); green.add(5);

Set blue = new HashSet<Integer>();

blue.add(-1); blue.add(0); blue.add(1);

String query = "red AND (green OR blue)";

// i need something which executes following dynamically depending on the query

Set result = new HashSet();

result.addAll(green);

result.addAll(blue);

result.retainAll(red);

System.out.println(result); //[1, 3]

}

}

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