org.das2.qds.util

Interface AsciiParser.RecordParser

All Known Implementing Classes:

AsciiParser.DelimParser, AsciiParser.FixedColumnsParser, AsciiParser.RegexParser

Enclosing class:

AsciiParser

public static interface AsciiParser.RecordParser

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	readNextRecord(java.io.BufferedReader reader) return the next record in a String, or null of no more records exist.
boolean	splitRecord(java.lang.String line, java.lang.String[] fields) attempts to extract fields from the record, returning true if the record could be split.
boolean	tryParseRecord(java.lang.String line, int irec, DataSetBuilder builder) returns true if the line appears to be a record.

Method Detail

readNextRecord

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

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

Parameters:

reader -

Returns:

Throws:

java.io.IOException

tryParseRecord

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

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

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

int fieldCount()

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

Returns:

the field count.

fieldCount

int fieldCount(java.lang.String line)

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.

Parameters:

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

Returns:

the number of fields found.

splitRecord

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

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

Parameters:

line - 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.