loci.poi.hssf.record.formula

Class AbstractFunctionPtg

java.lang.Object

loci.poi.hssf.record.formula.Ptg

loci.poi.hssf.record.formula.OperationPtg

loci.poi.hssf.record.formula.AbstractFunctionPtg

Direct Known Subclasses:

FuncPtg, FuncVarPtg

public abstract class AbstractFunctionPtg
extends OperationPtg

This class provides the base functionality for Excel sheet functions There are two kinds of function Ptgs - tFunc and tFuncVar Therefore, this class will have ONLY two subclasses

Author:

Avik Sengupta, Andrew C. Oliver (acoliver at apache dot org)

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTR_NAME
protected byte	field_1_num_args
protected short	field_2_fnc_index
protected static Object[][]	functionData
static short	INDEX_EXTERNAL
private static BinaryTree	map
protected byte[]	paramClass
protected byte	returnClass

Fields inherited from class loci.poi.hssf.record.formula.OperationPtg

TYPE_BINARY, TYPE_FUNCTION, TYPE_UNARY

Fields inherited from class loci.poi.hssf.record.formula.Ptg

CLASS_ARRAY, CLASS_REF, CLASS_VALUE, ptgClass

Constructor Summary

Constructors

Constructor and Description
AbstractFunctionPtg()

Method Summary

Methods

Modifier and Type	Method and Description
byte	getDefaultOperandClass()
short	getFunctionIndex()
String	getName()
byte	getParameterClass(int index)
abstract int	getSize()
int	getType()
protected short	lookupIndex(String name)
protected String	lookupName(short index)
private static Object[][]	produceFunctionData()
private static BinaryTree	produceHash() Produces the function table hashmap
String	toFormulaString(String[] operands) returns a string representation of the operations the length of the input array should equal the number returned by
String	toFormulaString(Workbook book) return a string representation of this token alone
String	toString() Overridden toString method to ensure object hash is not printed.
abstract void	writeBytes(byte[] array, int offset) write this Ptg to a byte array

Methods inherited from class loci.poi.hssf.record.formula.OperationPtg

getNumberOfOperands

Methods inherited from class loci.poi.hssf.record.formula.Ptg

clone, createParsedExpressionTokens, createPtg, getBytes, getPtgClass, serializePtgStack, setClass, toDebugString

Methods inherited from class java.lang.Object

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

Field Detail

ATTR_NAME

public static final String ATTR_NAME

See Also:

Constant Field Values

INDEX_EXTERNAL

public static final short INDEX_EXTERNAL

See Also:

Constant Field Values

map

private static BinaryTree map

functionData

protected static Object[][] functionData

returnClass

protected byte returnClass

paramClass

protected byte[] paramClass

field_1_num_args

protected byte field_1_num_args

field_2_fnc_index

protected short field_2_fnc_index

Constructor Detail

AbstractFunctionPtg

public AbstractFunctionPtg()

Method Detail

toString

public String toString()

Description copied from class: Ptg

Overridden toString method to ensure object hash is not printed. This helps get rid of gratuitous diffs when comparing two dumps Subclasses may output more relevant information by overriding this method

Overrides:

toString in class Ptg

getType

public int getType()

Specified by:

getType in class OperationPtg

getFunctionIndex

public short getFunctionIndex()

getName

public String getName()

toFormulaString

public String toFormulaString(Workbook book)

Description copied from class: Ptg

return a string representation of this token alone

Specified by:

toFormulaString in class Ptg

toFormulaString

public String toFormulaString(String[] operands)

Description copied from class: OperationPtg

returns a string representation of the operations the length of the input array should equal the number returned by

Specified by:

toFormulaString in class OperationPtg

See Also:

OperationPtg.getNumberOfOperands()

writeBytes

public abstract void writeBytes(byte[] array,
              int offset)

Description copied from class: Ptg

write this Ptg to a byte array

Specified by:

writeBytes in class Ptg

getSize

public abstract int getSize()

Specified by:

getSize in class Ptg

lookupName

protected String lookupName(short index)

lookupIndex

protected short lookupIndex(String name)

produceHash

private static BinaryTree produceHash()

Produces the function table hashmap

produceFunctionData

private static Object[][] produceFunctionData()

getDefaultOperandClass

public byte getDefaultOperandClass()

Overrides:

getDefaultOperandClass in class OperationPtg

getParameterClass

public byte getParameterClass(int index)