code/core/src/main/java/org/apache/tamaya/core/internal/converters/FileConverter.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.tamaya.core.internal.converters;

import org.apache.tamaya.spi.ConversionContext;
import org.apache.tamaya.spi.PropertyConverter;
import org.osgi.service.component.annotations.Component;

import java.io.File;
import java.util.Objects;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Converter, converting from String to File, using new File(createValue).
 */
@Component(service = PropertyConverter.class)
public class FileConverter implements PropertyConverter<File> {

    private static final Logger LOG = Logger.getLogger(FileConverter.class.getName());

    @Override
    public File convert(String value, ConversionContext ctx) {
        if(value==null || value.isEmpty()){
            return null;
        }
        ctx.addSupportedFormats(getClass(),"<File>");
        String trimmed = Objects.requireNonNull(value).trim();
        try {
            return new File(trimmed);
        } catch (Exception e) {
            LOG.log(Level.FINE, "Unparseable File Name: " + trimmed, e);
        }
        return null;
    }

    @Override
    public boolean equals(Object o){
        return Objects.nonNull(o) && getClass().equals(o.getClass());
    }

    @Override
    public int hashCode(){
        return getClass().hashCode();
    }
}