org.das2.qds.util

Class AsciiParser.DelimParser

java.lang.Object

org.das2.qds.util.AsciiParser.DelimParser

All Implemented Interfaces:

AsciiParser.RecordParser

Enclosing class:

AsciiParser

public final class AsciiParser.DelimParser
extends java.lang.Object
implements AsciiParser.RecordParser

DelimParser splits the line on a regex (like "," or "\\s+") to create the fields. Trailing and leading whitespace is ignored.

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.String	header

Constructor Summary

Constructors

Constructor and Description
DelimParser(int fieldCount, java.lang.String delim)

Method Summary

Modifier and Type	Method and Description
int	fieldCount() indicate the number of fields this RecordParser is expecting on each line.
int	fieldCount(java.lang.String line) return the number of fields in this line.
java.lang.String	getDelim() returns the delimiter, which is a regex.
java.lang.String	readNextRecord(java.io.BufferedReader reader) return the next record in a String, or null of no more records exist.
void	setGuessUnits(boolean guess) if true, then try to guess the units of the data coming in.
void	setShowException(boolean s)
void	setSkipField(int ifield, boolean skip)
boolean	splitRecord(java.lang.String input, java.lang.String[] fields) attempts to extract fields from the record, returning true if the record could be split.
java.lang.String	toString()
boolean	tryParseRecord(java.lang.String line, int irec, DataSetBuilder builder) returns true if the line appears to be a record.

Methods inherited from class java.lang.Object

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

Field Detail

header

public java.lang.String header

Constructor Detail

DelimParser

public DelimParser(int fieldCount,
                   java.lang.String delim)

Parameters:

fieldCount -

delim - the delimiter pattern, such as "," or "\s+"

Method Detail

getDelim

public java.lang.String getDelim()

returns the delimiter, which is a regex. Examples include "," "\t", and "\s+"

Returns:

setShowException

public void setShowException(boolean s)

setGuessUnits

public void setGuessUnits(boolean guess)

if true, then try to guess the units of the data coming in. If most fields will be non-enumeration, then the flag is cleared.

Parameters:

guess -

readNextRecord

public java.lang.String readNextRecord(java.io.BufferedReader reader)
                                throws java.io.IOException

Description copied from interface: AsciiParser.RecordParser

return the next record in a String, or null of no more records exist.

Specified by:

readNextRecord in interface AsciiParser.RecordParser

Returns:

Throws:

java.io.IOException

tryParseRecord

public boolean tryParseRecord(java.lang.String line,
                              int irec,
                              DataSetBuilder builder)

Description copied from interface: AsciiParser.RecordParser

returns true if the line appears to be a record. If it is a record, then the record is inserted into the builder.

Specified by:

tryParseRecord in interface AsciiParser.RecordParser

Parameters:

line - the line from the file.

irec - the record number

builder - the builder into which the data is inserted.

Returns:

true if the line appeared to be a record.

fieldCount

public int fieldCount()

Description copied from interface: AsciiParser.RecordParser

indicate the number of fields this RecordParser is expecting on each line.

Specified by:

fieldCount in interface AsciiParser.RecordParser

Returns:

the field count.

fieldCount

public int fieldCount(java.lang.String line)

Description copied from interface: AsciiParser.RecordParser

return the number of fields in this line. All records will have this number of fields. This is used for discovery and to configure the parser.

Specified by:

fieldCount in interface AsciiParser.RecordParser

Parameters:

line - the line from the file, to attempt parsing.

Returns:

the number of fields found.

setSkipField

public void setSkipField(int ifield,
                         boolean skip)

splitRecord

public boolean splitRecord(java.lang.String input,
                           java.lang.String[] fields)

Description copied from interface: AsciiParser.RecordParser

attempts to extract fields from the record, returning true if the record could be split.

Specified by:

splitRecord in interface AsciiParser.RecordParser

Parameters:

input - the line from the file.

fields - array to store the fields. fieldCount() should be used to determine the length of the array.

Returns:

true if the line is a record that can be split into fields.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object