org.apache.poi.hssf.usermodel
Class HSSFCell

java.lang.Object
  |
  +--org.apache.poi.hssf.usermodel.HSSFCell

public class HSSFCell

extends java.lang.Object

High level representation of a cell in a row of a spreadsheet. Cells can be numeric, formula-based or string-based (text). The cell type specifies this. String cells cannot conatin numbers and numeric cells cannot contain strings (at least according to our model). Client apps should do the conversions themselves. Formula cells are treated like string cells, simply containing a formula string. They'll be rendered differently.

Cells should have their number (0 based) before being added to a row. Only cells that have values should be added.

NOTE: the alpha won't be implementing formulas

Version:

1.0-pre

Author:

Andrew C. Oliver (acoliver at apache dot org)

Field Summary

static int	CELL_TYPE_BLANK Blank Cell type (3)
static int	CELL_TYPE_BOOLEAN Boolean Cell type (4)
static int	CELL_TYPE_ERROR Error Cell type (5)
static int	CELL_TYPE_FORMULA Formula Cell type (2)
static int	CELL_TYPE_NUMERIC Numeric Cell type (0)
static int	CELL_TYPE_STRING String Cell type (1)
static short	ENCODING_COMPRESSED_UNICODE
static short	ENCODING_UTF_16

Constructor Summary

protected	HSSFCell(Workbook book, Sheet sheet, short row, CellValueRecordInterface cval) Creates an HSSFCell from a CellValueRecordInterface.
protected	HSSFCell(Workbook book, Sheet sheet, short row, short col) Creates new Cell - Should only be called by HSSFRow.
protected	HSSFCell(Workbook book, Sheet sheet, short row, short col, int type) Deprecated. As of 22-Jan-2002 use @see org.apache.poi.hssf.usermodel.HSSFRow#createCell(short) and use setCellValue to specify the type lazily.

Method Summary

boolean	getBooleanCellValue() get the value of the cell as a boolean.
short	getCellNum() get the cell's number within the row
HSSFCellStyle	getCellStyle() get the style for the cell.
int	getCellType() get the cells type (numeric, formula or string)
protected CellValueRecordInterface	getCellValueRecord() Should only be used by HSSFSheet and friends.
java.util.Date	getDateCellValue() get the value of the cell as a date.
short	getEncoding() used for internationalization, currently 0 for compressed unicode or 1 for 16-bit
byte	getErrorCellValue() get the value of the cell as an error code.
double	getNumericCellValue() get the value of the cell as a number.
java.lang.String	getStringCellValue() get the value of the cell as a string - for numeric cells we throw an exception.
void	setCellErrorValue(byte value) set a error value for the cell
void	setCellNum(short num) set the cell's number within the row (0 based)
void	setCellStyle(HSSFCellStyle style) set the style for the cell.
void	setCellType(int cellType) set the cells type (numeric, formula or string) -- DONT USE FORMULAS IN THIS RELEASE WE'LL THROW YOU A RUNTIME EXCEPTION IF YOU DO
void	setCellValue(boolean value) set a boolean value for the cell
void	setCellValue(java.util.Calendar value) set a date value for the cell.
void	setCellValue(java.util.Date value) set a date value for the cell.
void	setCellValue(double value) set a numeric value for the cell
void	setCellValue(java.lang.String value) set a string value for the cell.
void	setEncoding(short encoding) set the encoding to either 8 or 16 bit.

Methods inherited from class java.lang.Object

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

Field Detail

CELL_TYPE_NUMERIC

public static final int CELL_TYPE_NUMERIC

Numeric Cell type (0)

See Also:

setCellType(int), getCellType()

CELL_TYPE_STRING

public static final int CELL_TYPE_STRING

String Cell type (1)

See Also:

setCellType(int), getCellType()

CELL_TYPE_FORMULA

public static final int CELL_TYPE_FORMULA

Formula Cell type (2)

See Also:

setCellType(int), getCellType()

CELL_TYPE_BLANK

public static final int CELL_TYPE_BLANK

Blank Cell type (3)

See Also:

setCellType(int), getCellType()

CELL_TYPE_BOOLEAN

public static final int CELL_TYPE_BOOLEAN

Boolean Cell type (4)

See Also:

setCellType(int), getCellType()

CELL_TYPE_ERROR

public static final int CELL_TYPE_ERROR

Error Cell type (5)

See Also:

setCellType(int), getCellType()

ENCODING_COMPRESSED_UNICODE

public static final short ENCODING_COMPRESSED_UNICODE

ENCODING_UTF_16

public static final short ENCODING_UTF_16

Constructor Detail

HSSFCell

protected HSSFCell(Workbook book,
                   Sheet sheet,
                   short row,
                   short col)

Creates new Cell - Should only be called by HSSFRow. This creates a cell from scratch.

When the cell is initially created it is set to CELL_TYPE_BLANK. Cell types can be changed/overwritten by calling setCellValue with the appropriate type as a parameter although conversions from one type to another may be prohibited.

Parameters:

book - - Workbook record of the workbook containing this cell

sheet - - Sheet record of the sheet containing this cell

row - - the row of this cell

col - - the column for this cell

See Also:

HSSFRow.createCell(short)

HSSFCell

protected HSSFCell(Workbook book,
                   Sheet sheet,
                   short row,
                   short col,
                   int type)

Deprecated. As of 22-Jan-2002 use @see org.apache.poi.hssf.usermodel.HSSFRow#createCell(short) and use setCellValue to specify the type lazily.

Creates new Cell - Should only be called by HSSFRow. This creates a cell from scratch.

Parameters:

book - - Workbook record of the workbook containing this cell

sheet - - Sheet record of the sheet containing this cell

row - - the row of this cell

col - - the column for this cell

type - - CELL_TYPE_NUMERIC, CELL_TYPE_STRING, CELL_TYPE_FORMULA, CELL_TYPE_BLANK, CELL_TYPE_BOOLEAN, CELL_TYPE_ERROR Type of cell

See Also:

HSSFRow.createCell(short,int)

HSSFCell

protected HSSFCell(Workbook book,
                   Sheet sheet,
                   short row,
                   CellValueRecordInterface cval)

Creates an HSSFCell from a CellValueRecordInterface. HSSFSheet uses this when reading in cells from an existing sheet.

Parameters:

book - - Workbook record of the workbook containing this cell

sheet - - Sheet record of the sheet containing this cell

cval - - the Cell Value Record we wish to represent

Method Detail

setCellNum

public void setCellNum(short num)

set the cell's number within the row (0 based)

Parameters:

num - short the cell number

getCellNum

public short getCellNum()

get the cell's number within the row

Returns:

short reperesenting the column number (logical!)

setCellType

public void setCellType(int cellType)

set the cells type (numeric, formula or string) -- DONT USE FORMULAS IN THIS RELEASE WE'LL THROW YOU A RUNTIME EXCEPTION IF YOU DO

See Also:

CELL_TYPE_NUMERIC, CELL_TYPE_STRING, CELL_TYPE_FORMULA, CELL_TYPE_BLANK, CELL_TYPE_BOOLEAN, CELL_TYPE_ERROR

getCellType

public int getCellType()

get the cells type (numeric, formula or string)

See Also:

CELL_TYPE_STRING, CELL_TYPE_NUMERIC, CELL_TYPE_FORMULA, CELL_TYPE_BOOLEAN, CELL_TYPE_ERROR

setCellValue

public void setCellValue(double value)

set a numeric value for the cell

Parameters:

value - the numeric value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For other types we will change the cell to a numeric cell and set its value.

setCellValue

public void setCellValue(java.util.Date value)

set a date value for the cell. Excel treats dates as numeric so you will need to format the cell as a date.

Parameters:

value - the date value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For other types we will change the cell to a numeric cell and set its value.

setCellValue

public void setCellValue(java.util.Calendar value)

set a date value for the cell. Excel treats dates as numeric so you will need to format the cell as a date.

Parameters:

value - the date value to set this cell to. For formulas we'll set the precalculated value, for numerics we'll set its value. For othertypes we will change the cell to a numeric cell and set its value.

setCellValue

public void setCellValue(java.lang.String value)

set a string value for the cell.

Parameters:

value - value to set the cell to. For formulas we'll set the formula string, for String cells we'll set its value. For other types we will change the cell to a string cell and set its value. If value is null then we will change the cell to a Blank cell.

getNumericCellValue

public double getNumericCellValue()

get the value of the cell as a number. For strings we throw an exception. For blank cells we return a 0.

getDateCellValue

public java.util.Date getDateCellValue()

get the value of the cell as a date. For strings we throw an exception. For blank cells we return a null.

getStringCellValue

public java.lang.String getStringCellValue()

get the value of the cell as a string - for numeric cells we throw an exception. For blank cells we return an empty string.

setCellValue

public void setCellValue(boolean value)

set a boolean value for the cell

Parameters:

value - the boolean value to set this cell to. For formulas we'll set the precalculated value, for booleans we'll set its value. For other types we will change the cell to a boolean cell and set its value.

setCellErrorValue

public void setCellErrorValue(byte value)

set a error value for the cell

Parameters:

value - the error value to set this cell to. For formulas we'll set the precalculated value ??? IS THIS RIGHT??? , for errors we'll set its value. For other types we will change the cell to an error cell and set its value.

getBooleanCellValue

public boolean getBooleanCellValue()

get the value of the cell as a boolean. For strings, numbers, and errors, we throw an exception. For blank cells we return a false.

getErrorCellValue

public byte getErrorCellValue()

get the value of the cell as an error code. For strings, numbers, and booleans, we throw an exception. For blank cells we return a 0.

setCellStyle

public void setCellStyle(HSSFCellStyle style)

set the style for the cell. The style should be an HSSFCellStyle created/retreived from the HSSFWorkbook.

Parameters:

style - reference contained in the workbook

See Also:

HSSFWorkbook.createCellStyle(), HSSFWorkbook.getCellStyleAt(short)

getCellStyle

public HSSFCellStyle getCellStyle()

get the style for the cell. This is a reference to a cell style contained in the workbook object.

See Also:

HSSFWorkbook.getCellStyleAt(short)

getEncoding

public short getEncoding()

used for internationalization, currently 0 for compressed unicode or 1 for 16-bit

Returns:

1 or 0 for compressed or uncompressed (used only with String type)

See Also:

ENCODING_COMPRESSED_UNICODE, ENCODING_UTF_16

setEncoding

public void setEncoding(short encoding)

set the encoding to either 8 or 16 bit. (US/UK use 8-bit, rest of the western world use 16bit)

Parameters:

encoding - either ENCODING_COMPRESSED_UNICODE (0) or ENCODING_UTF_16 (1)

See Also:

ENCODING_COMPRESSED_UNICODE, ENCODING_UTF_16

getCellValueRecord

protected CellValueRecordInterface getCellValueRecord()

Should only be used by HSSFSheet and friends. Returns the low level CellValueRecordInterface record

Returns:

CellValueRecordInterface representing the cell via the low level api.