/*
* Copyright 2002-2014 the original author or authors.
*
* 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.springframework.integration.file.filters;
import org.springframework.util.AntPathMatcher;
/**
* Base class for filters that support ant style path expressions, which are less powerful
* but more readable than regular expressions. This filter only filters on the name of the
* file, the rest of the path is ignored.
*
* @author Iwein Fuld
* @author Mark Fisher
* @see org.springframework.util.AntPathMatcher
* @see org.springframework.integration.file.filters.AbstractRegexPatternFileListFilter
* @since 2.0
*/
public abstract class AbstractSimplePatternFileListFilter<F> extends AbstractDirectoryAwareFileListFilter<F> {
private final AntPathMatcher matcher = new AntPathMatcher();
private final String path;
public AbstractSimplePatternFileListFilter(String path) {
this.path = path;
}
/**
* Accepts the given file if its name matches the pattern.
*/
@Override
public final boolean accept(F file) {
return alwaysAccept(file) || (file != null && this.matcher.match(this.path, this.getFilename(file)));
}
/**
* Subclasses must implement this method to extract the file's name.
*
* @param file The file.
* @return The file name.
*/
protected abstract String getFilename(F file);
}