package jaskell.sql;

import jaskell.script.Directive;

import jaskell.script.Parameter;

import java.util.Arrays;

import java.util.List;

import java.util.stream.Collectors;

public class Using implements Directive {

Directive _prefix;

List<Directive> _items;

Using(String names){

this._items = Arrays.stream(names.split(","))

.map(String::trim).map(Name::new).collect(Collectors.toList());;

}

Using(String ... names){

this._items = Arrays.stream(names).map(Name::new).collect(Collectors.toList());

}

Using(Directive... names){

this._items = Arrays.asList(names);

}

public Where where(Predicate predicate){

Where re = new Where(predicate);

re._from = this;

return re;

}

@Override

public String script() {

return String.format("%s USING(%s)",

_prefix.script(),

_items.stream().map(Directive::script).collect(Collectors.joining(",")));

}

@Override

public List<Parameter<?>> parameters() {

return null;

}

public static class Where extends Query {

Directive _from;

Predicate _predicate;

Where(Predicate predicate){

}

@Override

public String script() {

return null;

}

@Override

public List<Parameter<?>> parameters() {

return null;

}

}

}