/*
* Copyright 2011, Mysema Ltd
*
* 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 com.mysema.query.sql.dml;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import com.mysema.query.QueryException;
import com.mysema.query.sql.RelationalPath;
import com.mysema.query.sql.types.Null;
import com.mysema.query.types.Path;
import com.mysema.util.ReflectionUtils;
/**
* Creates the mapping by inspecting the RelationalPath and Object via reflection.
* Given bean doesn't need to have @Column metadata, but the fields need to have the same
* name as in the given relational path.
*
* @author tiwe
*
*/
public class DefaultMapper extends AbstractMapper<Object> {
public static final DefaultMapper DEFAULT = new DefaultMapper(false);
public static final DefaultMapper WITH_NULL_BINDINGS = new DefaultMapper(true);
private final boolean withNullBindings;
public DefaultMapper() {
this(false);
}
public DefaultMapper(boolean withNullBindings) {
this.withNullBindings = withNullBindings;
}
@Override
public Map<Path<?>, Object> createMap(RelationalPath<?> entity, Object bean) {
try {
Map<Path<?>, Object> values = new HashMap<Path<?>, Object>();
Class<?> beanClass = bean.getClass();
Map<String, Path<?>> columns = getColumns(entity);
for (Field beanField : ReflectionUtils.getFields(beanClass)) {
if (!Modifier.isStatic(beanField.getModifiers()) && columns.containsKey(beanField.getName())) {
@SuppressWarnings("rawtypes")
Path path = columns.get(beanField.getName());
beanField.setAccessible(true);
Object propertyValue = beanField.get(bean);
if (propertyValue != null) {
values.put(path, propertyValue);
} else if (withNullBindings && !isPrimaryKeyColumn(entity, path)) {
values.put(path, Null.DEFAULT);
}
}
}
return values;
} catch (IllegalAccessException e) {
throw new QueryException(e);
}
}
}