/* Copyright c 2005-2012.
* Licensed under GNU LESSER General Public License, Version 3.
* http://www.gnu.org/licenses
*/
package org.beangle.model.entity;
import java.io.Serializable;
import java.util.Map;
import org.apache.commons.beanutils.PropertyUtils;
import org.beangle.model.entity.context.DefaultModelBuilder;
import org.beangle.model.entity.types.EntityType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public final class Model {
public static final String NULL = "null";
private static final Logger logger = LoggerFactory.getLogger(Model.class);
private static EntityContext context;
private static Populator populator;
private static Model instance = new Model();
static {
new DefaultModelBuilder().build();
}
private Model() {
}
@SuppressWarnings("unchecked")
public static <T> T newInstance(final Class<T> clazz) {
return (T) getEntityType(clazz).newInstance();
}
public static <T> T newInstance(final Class<T> clazz, final Serializable id) {
@SuppressWarnings("unchecked")
T entity = (T) getEntityType(clazz).newInstance();
try {
PropertyUtils.setProperty(entity, "id", id);
} catch (Exception e) {
logger.error("initialize {} with id {} error", clazz, id);
}
return entity;
}
public static EntityType getEntityType(String entityName) {
return context.getEntityType(entityName);
}
public static Type getType(String entityName) {
return context.getType(entityName);
}
public static String getEntityName(Object obj) {
return context.getEntityName(obj);
}
public static EntityType getEntityType(Class<?> clazz) {
EntityType type = context.getEntityType(clazz);
if (null == type) {
type = new EntityType(clazz);
}
return type;
}
/**
* 将params中的属性([attr(string)->value(object)]，放入到实体类中。<br>
* 如果引用到了别的实体，那么<br>
* 如果params中的id为null，则将该实体的置为null.<br>
* 否则新生成一个实体，将其id设为params中指定的值。 空字符串按照null处理
*
* @param params
* @param entity
*/
public static void populate(Map<String, Object> params, Object entity) {
populator.populate(entity, params);
}
public static EntityContext getContext() {
return context;
}
public static void setContext(EntityContext context) {
Model.context = context;
}
public static Populator getPopulator() {
return populator;
}
public static void setPopulator(Populator populator) {
Model.populator = populator;
}
public static Model getInstance() {
return instance;
}
}