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51 lines
1.3 KiB
Java
Generated
51 lines
1.3 KiB
Java
Generated
/*
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* Copyright 2013 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ratpack.func;
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/**
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* An object that creates another.
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*
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* Factories are expected to create a new object each time.
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* Implementors should explain there behaviour if they do not do this.
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*
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* @param <T> the type of object that this factory creates
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*/
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@FunctionalInterface
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public interface Factory<T> {
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/**
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* Creates a new object.
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*
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* @return a newly created object
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* @throws Exception any
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*/
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T create() throws Exception;
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/**
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* Creates a factory that always returns the given item.
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*
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* @param item the item to always provide
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* @param <T> the type of the item
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* @return a factory that always returns {@code item}
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* @since 1.1
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*/
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static <T> Factory<T> constant(T item) {
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return () -> item;
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}
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}
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