com.netrics.likeit

Class NetricsCSVReader

java.lang.Object

com.netrics.likeit.NetricsCSVReader

All Implemented Interfaces:

NetricsFieldedReader

public class NetricsCSVReader
extends java.lang.Object
implements NetricsFieldedReader

Implement NetricsFieldedReader for CSV files. This is a simple CSV file reader that handles the same CSV format as the server side CSV reader. It implements the NetricsFieldedReader interface used by the Netrics Thesaurus classes and internally by the NetricsCSVRecSrc class.

See Also:

NetricsThesaurus, NetricsCombinedThesaurus, NetricsWeightedDictionary

Constructor Summary

Constructors

Constructor and Description
NetricsCSVReader(java.io.BufferedReader in_stream) Create a CSV Reader from an already opened stream.
NetricsCSVReader(java.lang.String file_name, java.lang.String char_set_name) Create a reader for a Named CSV file.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes files opened by this object.
java.lang.String	curLine() Return the text of the last line processed.
int	curLineNum() Return the line number (1 based) of the next line to read.
java.lang.String[]	readRecord() Read a single logical CSV record.
void	reset() Reset the read back to the first record.

Methods inherited from class java.lang.Object

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

Constructor Detail

NetricsCSVReader

public NetricsCSVReader(java.lang.String file_name,
                java.lang.String char_set_name)
                 throws java.io.FileNotFoundException,
                        NetricsFileFormatException

Create a reader for a Named CSV file. This creates a CSV file reader for a CSV file specified by a file name and a character set encoding name.

Parameters:

file_name - The name of a file to be read as a CSV file.

char_set_name - The name of the character encoding for the file. If null the default character set of latin-1 (ISO-8859-1) is used.

Throws:

java.io.FileNotFoundException

NetricsFileFormatException

NetricsCSVReader

public NetricsCSVReader(java.io.BufferedReader in_stream)

Create a CSV Reader from an already opened stream. This creates a CSV Reader on the given input stream reader.

Parameters:

in_stream - The input stream the CSV data is read from.

Method Detail

curLineNum

public int curLineNum()

Return the line number (1 based) of the next line to read.

Specified by:

curLineNum in interface NetricsFieldedReader

curLine

public java.lang.String curLine()

Return the text of the last line processed.

reset

public void reset()
           throws NetricsFileFormatException

Reset the read back to the first record. This resets reading of the file to the first record in the file so they can be read again. This can only be used if the file was opened by this object, if the CSV data is being read from a passed in stream this will throw an exception.

Specified by:

reset in interface NetricsFieldedReader

Throws:

NetricsFileFormatException

close

public void close()
           throws NetricsFileFormatException

Closes files opened by this object. This closes any files opened by this object.

Specified by:

close in interface NetricsFieldedReader

Throws:

NetricsFileFormatException

readRecord

public java.lang.String[] readRecord()
                              throws NetricsFileFormatException

Read a single logical CSV record. This reads a CSV record, which could be more than one physical line in the file.

Specified by:

readRecord in interface NetricsFieldedReader

Returns:

An array of strings representing the fields of the CSV record. Returns null on EOF.

Throws:

NetricsFileFormatException