com.lithium.flow.filer.chain.SubpathsFilerChain.java Source code

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Here is the source code for com.lithium.flow.filer.chain.SubpathsFilerChain.java

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/*
 * Copyright 2015 Lithium Technologies, Inc.
 *
 * 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 com.lithium.flow.filer.chain;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.stream.Collectors.toList;

import com.lithium.flow.config.Config;
import com.lithium.flow.filer.Filer;
import com.lithium.flow.filer.FilteredFiler;
import com.lithium.flow.filer.Record;
import com.lithium.flow.filer.RegexSubpathPredicate;
import com.lithium.flow.ioc.Chain;

import javax.annotation.Nonnull;

import com.google.common.base.Predicate;
import com.google.common.base.Predicates;

/**
 * @author Matt Ayres
 */
public class SubpathsFilerChain implements Chain<Filer> {
    private final Predicate<Record> predicate;

    public SubpathsFilerChain(@Nonnull Config config) {
        checkNotNull(config);
        predicate = Predicates
                .or(config.getList("subpaths").stream().map(RegexSubpathPredicate::new).collect(toList()));
    }

    @Override
    @Nonnull
    public Filer chain(@Nonnull Filer input) {
        return new FilteredFiler(input, predicate);
    }
}