Hibernate获取表配置信息包括Common注解信息

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package cn.joker.hibernateutil;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import org.apache.commons.lang3.StringUtils;import org.hibernate.cfg.Configuration;import org.hibernate.mapping.Column;import org.hibernate.mapping.PersistentClass;import org.hibernate.mapping.Property;/** * 功能描述：根据实体类得到对应的表名、主键名、字段名工具类 </p> * 注：po类名须与对应映射文件名一致，即Student.java与Student.hbm.xml *  * @Date：Nov 10, 2008 * @Time：3:13:07 PM *  */public class HibernateConfigurationHelper {public static Configuration hibernateConf;@SuppressWarnings("unused")private static Configuration getHibernateConf() {if (hibernateConf == null) {return new Configuration();}return hibernateConf;}@SuppressWarnings("unchecked")public static PersistentClass getPersistentClass(Class clazz) {synchronized (HibernateConfigurationHelper.class) {PersistentClass pc = getHibernateConf().getClassMapping(clazz.getName());if (pc == null) {hibernateConf = getHibernateConf().addClass(clazz);pc = getHibernateConf().getClassMapping(clazz.getName());}return pc;}}/** * 功能描述：获取实体对应的表名 *  * @param clazz *            实体类 * @return 表名 */@SuppressWarnings("unchecked")public static String getTableName(Class clazz) {return getPersistentClass(clazz).getTable().getName();}/** * 功能描述：获取实体对应表的主键字段名称 *  * @param clazz *            实体类 * @return 主键字段名称 */@SuppressWarnings("unchecked")public static String getPkColumnName(Class clazz) {return getPersistentClass(clazz).getTable().getPrimaryKey().getColumn(0).getName();}/** * 根据实体类获取所有列的备注信息 * @param clazz * @return */public static Map<String,String> getComments(Class clazz){System.out.println("test"); PersistentClass persistentClass = getPersistentClass(clazz);Iterator<Property> it=persistentClass.getPropertyIterator();Map<String, String> comments=new HashMap<String, String>();while(it.hasNext()){Property propert= it.next();Iterator<Column> columns=propert.getColumnIterator();while(columns.hasNext()){Column column= columns.next();String comment=column.getComment();if (StringUtils.isNotEmpty(comment)) {comments.put(propert.getName(), comment);}}}return comments;}/** * 根据实体类和属性获取列的备注 * @param clazz * @param propertyName * @return */public static String getComment(Class clazz,String propertyName){PersistentClass persistentClass = getPersistentClass(clazz);Property property = persistentClass.getProperty(propertyName);Iterator i=property.getColumnIterator();while(i.hasNext()){System.out.println(((Column)i.next()).getComment());}System.out.println(property.getMetaAttributes());Iterator it = property.getColumnIterator();if (it.hasNext()) {Column column = (Column) it.next();return column.getComment();}return null;}/** * 功能描述：通过实体类和属性，获取实体类属性对应的表字段名称 *  * @param clazz *            实体类 * @param propertyName *            属性名称 * @return 字段名称 */@SuppressWarnings("unchecked")public static String getColumnName(Class clazz, String propertyName) {PersistentClass persistentClass = getPersistentClass(clazz);Property property = persistentClass.getProperty(propertyName);Iterator i=property.getColumnIterator();while(i.hasNext()){System.out.println(((Column)i.next()).getComment());}System.out.println(property.getMetaAttributes());Iterator it = property.getColumnIterator();if (it.hasNext()) {Column column = (Column) it.next();return column.getName();}return null;}}
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