org.apache.derby.impl.load
Class ImportReadData

java.lang.Object
  org.apache.derby.impl.load.ImportReadData

All Implemented Interfaces:

java.security.PrivilegedExceptionAction

final class ImportReadData

extends java.lang.Object

implements java.security.PrivilegedExceptionAction

Field Summary

(package private) static int	ASCII_FIXED_FORMAT_CODE
private java.io.BufferedReader	bufferedReader
protected java.lang.String	columnDefinition
protected java.lang.String[]	columnTypes
private int[]	columnWidths
protected ControlInfo	controlFileReader
private char[]	currentToken
private int	currentTokenMaxSize
protected java.lang.String	dataCodeset
(package private) static int	DEFAULT_FORMAT_CODE
protected char[]	fieldSeparator
private char	fieldSeparatorChar0
protected int	fieldSeparatorLength
private boolean	fieldSepStartNotWhite
protected char[]	fieldStartDelimiter
(package private) int	fieldStartDelimiterIndex
protected int	fieldStartDelimiterLength
protected char[]	fieldStopDelimiter
(package private) int	fieldStopDelimiterIndex
protected int	fieldStopDelimiterLength
protected java.lang.String	format
private int	formatCode
(package private) boolean	foundStartAndStopDelimiters
(package private) boolean	foundStartDelimiter
private boolean	hasColumnDefinition
protected boolean	hasDelimiterAtEnd
private boolean	haveSep
private java.lang.String	inputFileName
(package private) int	lineNumber
protected java.lang.String	nullString
private int	numberOfCharsReadSoFar
protected int	numberOfColumns
(package private) int	positionOfNonWhiteSpaceCharInBack
(package private) int	positionOfNonWhiteSpaceCharInFront
protected char[]	recordSeparator
private char	recordSeparatorChar0
protected int	recordSeparatorLength
private boolean	recordSepStartNotWhite
private int	rowWidth
private static int	START_SIZE
(package private) int	stopDelimiterPosition
(package private) boolean	streamOpenForReading
private char[]	tempString
(package private) int	totalCharsSoFar

Constructor Summary

ImportReadData(java.lang.String inputFileName, ControlInfo controlFileReader)

Method Summary

private void	checkForWhiteSpaceInBack()
private void	checkForWhiteSpaceInFront()
void	closeStream() close the input data file
int	findNumberOfColumnsInARow()
int	getCurrentRowNumber() returns the number of the current row
int	getNumberOfColumns()
protected void	ignoreFirstRow() if columndefinition is true, ignore first row.
private boolean	isFieldSep(char[] chrArray)
protected void	loadColumnTypes() load the column types from the meta data line to be analyzed later in the constructor of the ImportResultSetMetaData.
private void	loadMetaData()
private void	loadPropertiesInfo()
private int	lookForPassedSeparator(char[] delimiter, int delimiterIndex, int delimiterLength, int nextChar, boolean lookForRecordSeperator)
private void	omitLineFeed()
private void	openFile()
private boolean	readNextDelimitedRow(java.lang.String[] returnStringArray)
private boolean	readNextFixedRow(java.lang.String[] returnStringArray)
boolean	readNextRow(java.lang.String[] returnStringArray) the way we read the next row from input file depends on it's format
boolean	readNextToken(char[] delimiter, int delimiterIndex, int delimiterLength, boolean isRecordSeperator)
boolean	readTokensUntilEndOfRecord()
private void	realOpenFile()
private int	reCheckRestOfTheCharacters(int startFrom, char[] delimiter, int delimiterLength)
java.lang.Object	run()
private boolean	skipDoubleDelimiters(char[] characterDelimiter)

Methods inherited from class java.lang.Object

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

Field Detail

inputFileName

private java.lang.String inputFileName

columnWidths

private int[] columnWidths

rowWidth

private int rowWidth

tempString

private char[] tempString

numberOfCharsReadSoFar

private int numberOfCharsReadSoFar

bufferedReader

private java.io.BufferedReader bufferedReader

START_SIZE

private static final int START_SIZE

See Also:

Constant Field Values

currentToken

private char[] currentToken

currentTokenMaxSize

private int currentTokenMaxSize

foundStartDelimiter

boolean foundStartDelimiter

totalCharsSoFar

int totalCharsSoFar

positionOfNonWhiteSpaceCharInFront

int positionOfNonWhiteSpaceCharInFront

positionOfNonWhiteSpaceCharInBack

int positionOfNonWhiteSpaceCharInBack

lineNumber

int lineNumber

fieldStartDelimiterIndex

int fieldStartDelimiterIndex

fieldStopDelimiterIndex

int fieldStopDelimiterIndex

stopDelimiterPosition

int stopDelimiterPosition

foundStartAndStopDelimiters

boolean foundStartAndStopDelimiters

streamOpenForReading

boolean streamOpenForReading

DEFAULT_FORMAT_CODE

static final int DEFAULT_FORMAT_CODE

See Also:

Constant Field Values

ASCII_FIXED_FORMAT_CODE

static final int ASCII_FIXED_FORMAT_CODE

See Also:

Constant Field Values

formatCode

private int formatCode

hasColumnDefinition

private boolean hasColumnDefinition

recordSeparatorChar0

private char recordSeparatorChar0

fieldSeparatorChar0

private char fieldSeparatorChar0

recordSepStartNotWhite

private boolean recordSepStartNotWhite

fieldSepStartNotWhite

private boolean fieldSepStartNotWhite

controlFileReader

protected ControlInfo controlFileReader

numberOfColumns

protected int numberOfColumns

columnTypes

protected java.lang.String[] columnTypes

fieldSeparator

protected char[] fieldSeparator

fieldSeparatorLength

protected int fieldSeparatorLength

recordSeparator

protected char[] recordSeparator

recordSeparatorLength

protected int recordSeparatorLength

nullString

protected java.lang.String nullString

columnDefinition

protected java.lang.String columnDefinition

format

protected java.lang.String format

dataCodeset

protected java.lang.String dataCodeset

fieldStartDelimiter

protected char[] fieldStartDelimiter

fieldStartDelimiterLength

protected int fieldStartDelimiterLength

fieldStopDelimiter

protected char[] fieldStopDelimiter

fieldStopDelimiterLength

protected int fieldStopDelimiterLength

hasDelimiterAtEnd

protected boolean hasDelimiterAtEnd

haveSep

private boolean haveSep

Constructor Detail

ImportReadData

public ImportReadData(java.lang.String inputFileName,
                      ControlInfo controlFileReader)
               throws java.lang.Exception

Method Detail

loadPropertiesInfo

private void loadPropertiesInfo()
                         throws java.lang.Exception

Throws:

java.lang.Exception

getNumberOfColumns

public int getNumberOfColumns()

ignoreFirstRow

protected void ignoreFirstRow()
                       throws java.lang.Exception

if columndefinition is true, ignore first row. The way to do that is to just look for the record separator

Throws:

java.lang.Exception - if there is an error

loadColumnTypes

protected void loadColumnTypes()
                        throws java.lang.Exception

load the column types from the meta data line to be analyzed later in the constructor of the ImportResultSetMetaData.

Throws:

java.lang.Exception

openFile

private void openFile()
               throws java.lang.Exception

Throws:

java.lang.Exception

run

public final java.lang.Object run()
                           throws java.lang.Exception

Specified by:

run in interface java.security.PrivilegedExceptionAction

Throws:

java.lang.Exception

realOpenFile

private void realOpenFile()
                   throws java.lang.Exception

Throws:

java.lang.Exception

loadMetaData

private void loadMetaData()
                   throws java.lang.Exception

Throws:

java.lang.Exception

closeStream

public void closeStream()
                 throws java.lang.Exception

close the input data file

Throws:

java.lang.Exception - if there is an error

findNumberOfColumnsInARow

public int findNumberOfColumnsInARow()
                              throws java.lang.Exception

Throws:

java.lang.Exception

checkForWhiteSpaceInFront

private void checkForWhiteSpaceInFront()

checkForWhiteSpaceInBack

private void checkForWhiteSpaceInBack()

readTokensUntilEndOfRecord

public boolean readTokensUntilEndOfRecord()
                                   throws java.lang.Exception

Throws:

java.lang.Exception

lookForPassedSeparator

private int lookForPassedSeparator(char[] delimiter,
                                   int delimiterIndex,
                                   int delimiterLength,
                                   int nextChar,
                                   boolean lookForRecordSeperator)
                            throws java.io.IOException

Throws:

java.io.IOException

reCheckRestOfTheCharacters

private int reCheckRestOfTheCharacters(int startFrom,
                                       char[] delimiter,
                                       int delimiterLength)

skipDoubleDelimiters

private boolean skipDoubleDelimiters(char[] characterDelimiter)
                              throws java.io.IOException

Throws:

java.io.IOException

omitLineFeed

private void omitLineFeed()
                   throws java.io.IOException

Throws:

java.io.IOException

getCurrentRowNumber

public int getCurrentRowNumber()

returns the number of the current row

readNextRow

public boolean readNextRow(java.lang.String[] returnStringArray)
                    throws java.lang.Exception

the way we read the next row from input file depends on it's format

Throws:

java.lang.Exception - if there is an error

readNextFixedRow

private boolean readNextFixedRow(java.lang.String[] returnStringArray)
                          throws java.lang.Exception

Throws:

java.lang.Exception

readNextDelimitedRow

private boolean readNextDelimitedRow(java.lang.String[] returnStringArray)
                              throws java.lang.Exception

Throws:

java.lang.Exception

isFieldSep

private boolean isFieldSep(char[] chrArray)

readNextToken

public boolean readNextToken(char[] delimiter,
                             int delimiterIndex,
                             int delimiterLength,
                             boolean isRecordSeperator)
                      throws java.lang.Exception

Throws:

java.lang.Exception