prefuse.data.parser
Class LongParser

java.lang.Object
  extended by prefuse.data.parser.LongParser
All Implemented Interfaces:
DataParser

public class LongParser
extends java.lang.Object
implements DataParser

DataParser instance that parses long values from a text string. Long values can be explicitly coded for by using an 'L' at the end of a number. For example "42" could parse as an int or a long, but "42L" will only parse as a long.

Author:
jeffrey heer

Constructor Summary
LongParser()
           
 
Method Summary
 boolean canParse(java.lang.String text)
          Indicates if the given text string can be successfully parsed by this parser.
 java.lang.String format(java.lang.Object value)
          Get a String representation for the given value.
 java.lang.Class getType()
          Returns long.class.
 java.lang.Object parse(java.lang.String text)
          Parse the given text string to a data value.
static long parseLong(java.lang.String text)
          Parse a long value from a text string.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

LongParser

public LongParser()
Method Detail

getType

public java.lang.Class getType()
Returns long.class.

Specified by:
getType in interface DataParser
Returns:
the parsed data type for this parser as a Java Class instance
See Also:
DataParser.getType()

format

public java.lang.String format(java.lang.Object value)
Description copied from interface: DataParser
Get a String representation for the given value.

Specified by:
format in interface DataParser
Parameters:
value - the object value to format
Returns:
a formatted String representing the input value
See Also:
DataParser.format(java.lang.Object)

canParse

public boolean canParse(java.lang.String text)
Description copied from interface: DataParser
Indicates if the given text string can be successfully parsed by this parser.

Specified by:
canParse in interface DataParser
Parameters:
text - the text string to check for parsability
Returns:
true if the string can be successfully parsed into this parser's data type, false otherwise
See Also:
DataParser.canParse(java.lang.String)

parse

public java.lang.Object parse(java.lang.String text)
                       throws DataParseException
Description copied from interface: DataParser
Parse the given text string to a data value.

Specified by:
parse in interface DataParser
Parameters:
text - the text string to parse
Returns:
the parsed data value, which will be an instance of the Class returned by the DataParser.getType() method
Throws:
DataParseException - if an error occurs during parsing
See Also:
DataParser.parse(java.lang.String)

parseLong

public static long parseLong(java.lang.String text)
                      throws DataParseException
Parse a long value from a text string.

Parameters:
text - the text string to parse
Returns:
the parsed long value
Throws:
DataParseException - if an error occurs during parsing


Copyright © 2007 Regents of the University of California