org.springframework.batch.item.file.transform
Class DelimitedLineTokenizer

java.lang.Object
  org.springframework.batch.item.file.transform.AbstractLineTokenizer
      org.springframework.batch.item.file.transform.DelimitedLineTokenizer

All Implemented Interfaces:

LineTokenizer

public class DelimitedLineTokenizer
extends AbstractLineTokenizer

A LineTokenizer implementation that splits the input String on a configurable delimiter. This implementation also supports the use of an escape character to escape delimiters and line endings.

Author:

Rob Harrop, Dave Syer

Field Summary

static char	DEFAULT_QUOTE_CHARACTER Convenient constant for the common case of a " character used to escape delimiters or line endings.
static char	DELIMITER_COMMA Convenient constant for the common case of a comma delimiter.
static char	DELIMITER_TAB Convenient constant for the common case of a tab delimiter.

Fields inherited from class org.springframework.batch.item.file.transform.AbstractLineTokenizer

names

Constructor Summary

DelimitedLineTokenizer()
Create a new instance of the DelimitedLineTokenizer class for the common case where the delimiter is a comma.

DelimitedLineTokenizer(char delimiter)
Create a new instance of the DelimitedLineTokenizer class.

Method Summary

protected List<String>	doTokenize(String line) Yields the tokens resulting from the splitting of the supplied line.
protected boolean	isQuoteCharacter(char c) Is the supplied character a quote character?
void	setDelimiter(char delimiter) Setter for the delimiter character.
void	setIncludedFields(int[] includedFields) The fields to include in the output by position (starting at 0).
void	setQuoteCharacter(char quoteCharacter) Public setter for the quoteCharacter.

Methods inherited from class org.springframework.batch.item.file.transform.AbstractLineTokenizer

hasNames, isStrict, setFieldSetFactory, setNames, setStrict, tokenize

Methods inherited from class java.lang.Object

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

Field Detail

DELIMITER_TAB

public static final char DELIMITER_TAB

Convenient constant for the common case of a tab delimiter.

See Also:

Constant Field Values

DELIMITER_COMMA

public static final char DELIMITER_COMMA

Convenient constant for the common case of a comma delimiter.

See Also:

Constant Field Values

DEFAULT_QUOTE_CHARACTER

public static final char DEFAULT_QUOTE_CHARACTER

Convenient constant for the common case of a " character used to escape delimiters or line endings.

See Also:

Constant Field Values

Constructor Detail

DelimitedLineTokenizer

public DelimitedLineTokenizer()

Create a new instance of the DelimitedLineTokenizer class for the common case where the delimiter is a comma.

See Also:

DelimitedLineTokenizer(char), DELIMITER_COMMA

DelimitedLineTokenizer

public DelimitedLineTokenizer(char delimiter)

Create a new instance of the DelimitedLineTokenizer class.

Parameters:

delimiter - the desired delimiter

Method Detail

setDelimiter

public void setDelimiter(char delimiter)

Setter for the delimiter character.

Parameters:

delimiter -

setIncludedFields

public void setIncludedFields(int[] includedFields)

The fields to include in the output by position (starting at 0). By default all fields are included, but this property can be set to pick out only a few fields from a larger set. Note that if field names are provided, their number must match the number of included fields.

Parameters:

includedFields - the included fields to set

setQuoteCharacter

public final void setQuoteCharacter(char quoteCharacter)

Public setter for the quoteCharacter. The quote character can be used to extend a field across line endings or to enclose a String which contains the delimiter. Inside a quoted token the quote character can be used to escape itself, thus "a""b""c" is tokenized to a"b"c.

Parameters:

quoteCharacter - the quoteCharacter to set

See Also:

DEFAULT_QUOTE_CHARACTER

doTokenize

protected List<String> doTokenize(String line)

Yields the tokens resulting from the splitting of the supplied line.

Specified by:

doTokenize in class AbstractLineTokenizer

Parameters:

line - the line to be tokenized

Returns:

the resulting tokens

isQuoteCharacter

protected boolean isQuoteCharacter(char c)

Is the supplied character a quote character?

Parameters:

c - the character to be checked

Returns:

true if the supplied character is an quote character

See Also:

setQuoteCharacter(char)