/*
* Copyright 2004-2012 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.binding.mapping.impl;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.binding.mapping.Mapper;
import org.springframework.binding.mapping.Mapping;
import org.springframework.binding.mapping.MappingResults;
import org.springframework.core.style.ToStringCreator;
/**
* Generic mapper implementation that allows mappings to be configured programatically.
*
* @see #addMapping(DefaultMapping)
* @author Keith Donald
*/
public class DefaultMapper implements Mapper {
private static final Log logger = LogFactory.getLog(DefaultMapper.class);
private List<DefaultMapping> mappings = new ArrayList<DefaultMapping>();
/**
* Add a mapping to this mapper.
* @param mapping the mapping to add (required)
* @return this, to support convenient call chaining
*/
public DefaultMapper addMapping(DefaultMapping mapping) {
mappings.add(mapping);
return this;
}
/**
* Returns this mapper's list of mappings.
* @return the list of mappings
*/
public Mapping[] getMappings() {
return mappings.toArray(new Mapping[mappings.size()]);
}
public MappingResults map(Object source, Object target) {
if (logger.isDebugEnabled()) {
logger.debug("Beginning mapping between source [" + source.getClass().getName() + "] and target ["
+ target.getClass().getName() + "]");
}
DefaultMappingContext context = new DefaultMappingContext(source, target);
for (DefaultMapping mapping : mappings) {
mapping.map(context);
}
MappingResults results = context.getMappingResults();
if (logger.isDebugEnabled()) {
logger.debug("Completing mapping between source [" + source.getClass().getName() + "] and target ["
+ target.getClass().getName() + "]; total mappings = " + results.getAllResults().size()
+ "; total errors = " + results.getErrorResults().size());
}
return results;
}
public String toString() {
return new ToStringCreator(this).append("mappings", mappings).toString();
}
}