| // Copyright 2010 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.func; |
| |
| class LazyMappedValue<T, X> implements LazyValue<X> |
| { |
| private final Flow<T> flow; |
| |
| private final Mapper<T, X> mapper; |
| |
| public LazyMappedValue(Flow<T> input, Mapper<T, X> mapper) |
| { |
| this.flow = input; |
| this.mapper = mapper; |
| } |
| |
| @Override |
| public X get() |
| { |
| return mapper.map(flow.first()); |
| } |
| } |