de.hpi.fgis.dude.output
Class JsonOutput

java.lang.Object
  de.hpi.fgis.dude.output.AbstractDuDeOutput
      de.hpi.fgis.dude.output.JsonOutput

All Implemented Interfaces:

DuDeOutput, AutoJsonable, Jsonable

public class JsonOutput
extends AbstractDuDeOutput

JsonOutput converts the passed DuDeObject pairs into Json syntax. There are two different modes for writing the information to the stream. The default mode writes only the identifying information while the other one prints the whole data of each DuDeObject

Author:

Matthias Pohl

Field Summary

protected static String	DEFAULT_FOOTER The default footer of the JsonOutput.
protected static String	DEFAULT_HEADER The default header of the JsonOutput.
static String	FIRST_OBJECT_ATTRIBUTE The attribute name of the first object within each pair.
static String	SECOND_OBJECT_ATTRIBUTE The attribute name of the second object within each pair.
static String	SIMILARITY_ATTRIBUTE The attribute name of the similarity that belongs to each pair

Fields inherited from class de.hpi.fgis.dude.output.AbstractDuDeOutput

outputStream

Constructor Summary

protected	JsonOutput() Internal constructor for Jsonable deserialization.
	JsonOutput(File out) Initializes a JsonOutput formatter.
	JsonOutput(OutputStream out) Initializes a JsonOutput formatter.

Method Summary

protected String	getDefaultFooter() Returns DEFAULT_FOOTER.
protected String	getDefaultHeader() Returns DEFAULT_HEADER.
void	write(DuDeObjectPair pair) Writes the DuDeObjectPair onto an stream.

Methods inherited from class de.hpi.fgis.dude.output.AbstractDuDeOutput

close, fromJson, printDataEnabled, toJson, withData, withoutData, writeDuplicatesOnly, writelnToStream, writeToStream

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_HEADER

protected static final String DEFAULT_HEADER

The default header of the JsonOutput.

See Also:

Constant Field Values

DEFAULT_FOOTER

protected static final String DEFAULT_FOOTER

The default footer of the JsonOutput.

See Also:

Constant Field Values

FIRST_OBJECT_ATTRIBUTE

public static final String FIRST_OBJECT_ATTRIBUTE

The attribute name of the first object within each pair.

See Also:

Constant Field Values

SECOND_OBJECT_ATTRIBUTE

public static final String SECOND_OBJECT_ATTRIBUTE

The attribute name of the second object within each pair.

See Also:

Constant Field Values

SIMILARITY_ATTRIBUTE

public static final String SIMILARITY_ATTRIBUTE

The attribute name of the similarity that belongs to each pair

See Also:

Constant Field Values

Constructor Detail

JsonOutput

public JsonOutput(OutputStream out)
           throws IOException

Initializes a JsonOutput formatter. This instance writes only the identifying information of each object to the stream.

Parameters:

out - The stream to which the data shall be written.

Throws:

IOException - If an error occurs while writing to the OutputStream.

JsonOutput

public JsonOutput(File out)
           throws IOException

Initializes a JsonOutput formatter. This instance writes only the identifying information of each object to the stream.

Parameters:

out - The file to which the data shall be written.

Throws:

IOException - If an error occurs while writing to the OutputStream.

JsonOutput

protected JsonOutput()

Internal constructor for Jsonable deserialization.

Method Detail

getDefaultHeader

protected String getDefaultHeader()

Returns DEFAULT_HEADER.

Overrides:

getDefaultHeader in class AbstractDuDeOutput

Returns:

Returns an empty String.

getDefaultFooter

protected String getDefaultFooter()

Returns DEFAULT_FOOTER.

Overrides:

getDefaultFooter in class AbstractDuDeOutput

Returns:

Returns an empty String.

write

public void write(DuDeObjectPair pair)
           throws IOException

Description copied from interface: DuDeOutput

Writes the DuDeObjectPair onto an stream.

Specified by:

write in interface DuDeOutput

Specified by:

write in class AbstractDuDeOutput

Parameters:

pair - A pair of two DuDeObjects that are written into an OutputStream.

Throws:

IOException - If an error occurs while writing onto the stream.