oracle.adf.model.adapter.dataformat
Interface FormatDataHandler

All Known Implementing Classes:

CSVHandler, DOMDataHandler, XMLHandler

public interface FormatDataHandler

Interface to define a data handler for specific data format. The data handler extracts the data from the data stream with a specific format, e.g. XML, CSV etc.

Given the data set of that format, format handler can extract data and present them as an Iterator of Map. The Map contains the value of attributes as defined in the data structure. For complex data, Maps can contain other Iterator of Maps as well.

Since:

10.1.3

Version:

1.0

Method Summary

java.lang.Object

getResult(java.util.Map params, java.lang.String returnType) Returns the resulting data extracted from the input.

Method Detail

getResult

public java.lang.Object getResult(java.util.Map params,
                                  java.lang.String returnType)

Returns the resulting data extracted from the input.

Parameters:

params - parameters passed containig the context information.

returnType - data type of the returned value. This can be passed as null. If no return type is specified, an Iterator of Map will be returned.

Returns:

Object of the type defined by the returnType parameter. If the type is available, an instance of that object is created. If no type is specified an Iterator of Map objects for the result will be created. If no data found it can return null. The Map contains the value of attributes as defined in the data structure. For complex data, Maps can contain other Maps as well.