Get information about {@link IStorage}. @return {@link IStorage} information.

Use param as separator of field, translate the {@link ILine} into {@link String}. @param separator field separator. @return {@link ILine} in

Add a field into the {@link ILine}. @param field Field added into {@link ILine}. @return true for OK, false for failure.

Get length of all fields, exclude separate. @return length of all fields.

Get size of {@link IStorage} in bytes @return Storage size.

Add a field into the {@link ILine}. @param field Field added into {@link ILine}. @return true for OK, false for failure.

Get one field of the {@link ILine} indexed by the param. NOTE: if index specifed by user beyond field number of {@link ILine} it may throw runtime ex

A synchronized static method which gets database connection by the identification. @param clazz {@link Pluginable} class @param ip

Initialization for {@link IStorage}. @param id {@link IWriter} id. @param lineLimit Limit of the line number the {@link IStorage}

Get {@link Configuration}. @param dir directory path in hdfs @param conf hadoop-site.xml path @return {@link Configuration}

Get number of total fields in the {@link ILine}. @return number of total fields in {@link ILine}.

Initialize handle of {@link FileSystem}. @param uri URI @param conf {@link Configuration} @return an FileSystem instance

@param string field string @return if the field string is equal to specified nullString, it return null

Clear

Parse engine configuration file. @return {@link EngineConf}.

Get next line of data which dumped to data destination. @return next {@link ILine}.

@param timeout appointed limit time @param unit time unit

If exists write space, it will return true, and write one line to the space. otherwise, it will try to do that in a appointed time,when time is out if

A synchronized static method which create {@link DataSource}. @param clazz {@link Pluginable} class @param ip database host ip

@param array @param index @return true if array is too small to increment the index

Delete file specified by path. @param path {@link Path} in hadoop @param flag need to do delete recursively @throws IOExceptio