001// Copyright 2010 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.func;
016
017public class LazyZipValue<A, B> implements LazyValue<Tuple<A, B>>
018{
019    private final Flow<A> aFlow;
020
021    private final Flow<B> bFlow;
022
023    public LazyZipValue(Flow<A> aFlow, Flow<B> bFlow)
024    {
025        this.aFlow = aFlow;
026        this.bFlow = bFlow;
027    }
028
029    @Override
030    public Tuple<A, B> get()
031    {
032        return new Tuple<A, B>(aFlow.first(), bFlow.first());
033    }
034}