org.springframework.batch.item.file.mapping
Class JsonLineMapper

java.lang.Object
  org.springframework.batch.item.file.mapping.JsonLineMapper

All Implemented Interfaces:

LineMapper<Map<String,Object>>

public class JsonLineMapper
extends Object
implements LineMapper<Map<String,Object>>

Interpret a line as a Json object and parse it up to a Map. The line should be a standard Json object, starting with "{" and ending with "}" and composed of name:value pairs separated by commas. Whitespace is ignored, e.g.

 { "foo" : "bar", "value" : 123 }
 

The values can also be Json objects (which are converted to maps):

 { "foo": "bar", "map": { "one": 1, "two": 2}}
 

Author:

Dave Syer

Constructor Summary

JsonLineMapper()

Method Summary

Map<String,Object>

mapLine(String line, int lineNumber) Interpret the line as a Json object and create a Map from it.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonLineMapper

public JsonLineMapper()

Method Detail

mapLine

public Map<String,Object> mapLine(String line,
                                  int lineNumber)
                           throws Exception

Interpret the line as a Json object and create a Map from it.

Specified by:

mapLine in interface LineMapper<Map<String,Object>>

Parameters:

line - to be mapped

lineNumber - of the current line

Returns:

mapped object of type T

Throws:

Exception - if error occured while parsing.

See Also:

LineMapper.mapLine(String, int)