/**
* 获取数据库中列的描述
*
* @param tableName
* @param session
* @return
* @throws SQLException
*/
public static Map<String, ColumnMeta> getColumnMetadataFormDataBase(
String schemaName, String tableName, Session session) throws SQLException {
Connection conn =
SessionFactoryUtils.getDataSource(session.getSessionFactory()).getConnection();
DatabaseMetaData dbMetaData = conn.getMetaData();
ResultSet rs = dbMetaData.getColumns(null, schemaName, tableName, "%");
ColumnMeta columnMeta;
Map<String, ColumnMeta> columnMap = new HashMap<String, ColumnMeta>();
while (rs.next()) {
columnMeta = new ColumnMeta();
columnMeta.setTableName(rs.getString("COLUMN_NAME").toLowerCase());
columnMeta.setColumnName(rs.getString("COLUMN_NAME").toLowerCase());
columnMeta.setColunmType(
dbTableHandle.getMatchClassTypeByDataType(
rs.getString("TYPE_NAME"), rs.getInt("DECIMAL_DIGITS")));
columnMeta.setColumnSize(rs.getInt("COLUMN_SIZE"));
columnMeta.setDecimalDigits(rs.getInt("DECIMAL_DIGITS"));
columnMeta.setIsNullable(rs.getInt("NULLABLE") == 1 ? "Y" : "N");
columnMeta.setComment(rs.getString("REMARKS"));
columnMeta.setFieldDefault(
judgeIsNumber(rs.getString("COLUMN_DEF")) == null
? ""
: judgeIsNumber(rs.getString("COLUMN_DEF")));
logger.info(
"getColumnMetadataFormDataBase --->COLUMN_NAME:"
+ rs.getString("COLUMN_NAME")
+ " TYPE_NAME :"
+ rs.getString("TYPE_NAME")
+ " DECIMAL_DIGITS:"
+ rs.getInt("DECIMAL_DIGITS")
+ " COLUMN_SIZE:"
+ rs.getInt("COLUMN_SIZE"));
columnMap.put(rs.getString("COLUMN_NAME").toLowerCase(), columnMeta);
}
return columnMap;
}
