log4j-core/src/main/java/org/apache/logging/log4j/core/appender/rolling/action/IfAny.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.logging.log4j.core.appender.rolling.action;

import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.Arrays;
import java.util.Objects;

import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.plugins.Plugin;
import org.apache.logging.log4j.plugins.PluginElement;
import org.apache.logging.log4j.plugins.PluginFactory;

/**
 * Composite {@code PathCondition} that accepts objects that are accepted by <em>any</em> component conditions.
 * Corresponds to logical "OR".
 */
@Plugin(name = "IfAny", category = Core.CATEGORY_NAME, printObject = true)
public final class IfAny implements PathCondition {

    private final PathCondition[] components;

    private IfAny(final PathCondition... filters) {
        this.components = Objects.requireNonNull(filters, "filters");
    }

    public PathCondition[] getDeleteFilters() {
        return components;
    }

    /*
     * (non-Javadoc)
     * @see org.apache.logging.log4j.core.appender.rolling.action.PathCondition#accept(java.nio.file.Path, java.nio.file.Path, java.nio.file.attribute.BasicFileAttributes)
     */
    @Override
    public boolean accept(final Path baseDir, final Path relativePath, final BasicFileAttributes attrs) {
        for (final PathCondition component : components) {
            if (component.accept(baseDir, relativePath, attrs)) {
                return true;
            }
        }
        return false;
    }

    /*
     * (non-Javadoc)
     * @see org.apache.logging.log4j.core.appender.rolling.action.PathCondition#beforeFileTreeWalk()
     */
    @Override
    public void beforeFileTreeWalk() {
        for (final PathCondition condition : components) {
            condition.beforeFileTreeWalk();
        }
    }

    /**
     * Create a Composite PathCondition: accepts if any of the nested conditions accepts.
     * 
     * @param components The component conditions.
     * @return A Composite PathCondition.
     */
    @PluginFactory
    public static IfAny createOrCondition( 
            @PluginElement("PathConditions") final PathCondition... components) {
        return new IfAny(components);
    }

    @Override
    public String toString() {
        return "IfAny" + Arrays.toString(components);
    }
}