ExchangesCommand.java

package org.cryptocoinpartners.command;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.inject.Inject;

import org.cryptocoinpartners.schema.Market;

/**
 * @author Tim Olson
 */
@SuppressWarnings("UnusedDeclaration")
public class ExchangesCommand extends CommandBase {
    @Inject
    Market markets;

    @Override
    public String getUsageHelp() {
        return "exchanges";
    }

    @Override
    public String getExtraHelp() {
        return "prints all exchanges available";
    }

    @Override
    public void run() {
        Set<String> symbols = new HashSet<>();
        for (Market market : markets.findAll())
            symbols.add(market.getExchange().getSymbol());
        List<String> sorted = new ArrayList<>(symbols);
        Collections.sort(sorted);
        out.printList(sorted);
    }

}