}
public InputStream getInputStream(ConnectionData data, int fullPathHash, String path,String name) throws IOException {
Attr attr = getAttr(data, fullPathHash,path, name);
if(attr==null) throw new IOException("file ["+path+name+"] does not exist");
DatasourceConnection dc=null;
try {
dc = getDatasourceConnection(data);
return getCore(data).getInputStream(dc, data.getPrefix(), attr);
}
catch (SQLException e) {