001    /*******************************************************************************
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     * http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     *******************************************************************************/
019    package org.apache.commons.convert;
020    
021    /**
022     * Abstract converter class. This class handles converter registration
023     * and it implements some of the <code>Converter</code> methods.
024     */
025    public abstract class AbstractConverter<S, T> implements Converter<S, T>, ConverterLoader {
026        private final Class<? super S> sourceClass;
027        private final Class<? super T> targetClass;
028    
029        protected AbstractConverter(Class<? super S> sourceClass, Class<? super T> targetClass) {
030            this.sourceClass = sourceClass;
031            this.targetClass = targetClass;
032        }
033    
034        public void loadConverters() {
035            Converters.registerConverter(this);
036        }
037    
038        public boolean canConvert(Class<?> sourceClass, Class<?> targetClass) {
039            return Util.instanceOf(sourceClass, this.getSourceClass()) && Util.instanceOf(targetClass, this.getTargetClass());
040        }
041    
042        public Class<? super S> getSourceClass() {
043            return sourceClass;
044        }
045    
046        public Class<? super T> getTargetClass() {
047            return targetClass;
048        }
049    }