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Java Source Code / Java Documentation » Database DBMS » axion » org.axiondb.functions

Source Cross Reference

Class Diagram

Java Document (Java Doc)

org.axiondb.functions .BaseFunction

org.axiondb.functions .RowNumFunction

RowNumFunction
public class RowNumFunction extends BaseFunction implements ScalarFunction,FunctionFactory(Code)
	Returns an one-based index indicating the order in which a row was selected from a table, join, etc. Note that conditions testing whether ROWNUM() is greater than a positive integer will always fail (since for each tested row ROWNUM() will evaluate to 1). version: $Revision: 1.4 $ $Date: 2005/03/01 22:58:42 $ author: Rodney Waldhoff

Constructor Summary
public	RowNumFunction()

Method Summary
public Object	evaluate(RowDecorator row)
public DataType	getDataType()
public boolean	isValid()
public ConcreteFunction	makeNewInstance()

Constructor Detail

RowNumFunction
public RowNumFunction()(Code)

Method Detail

evaluate
public Object evaluate(RowDecorator row) throws AxionException(Code)

getDataType
public DataType getDataType()(Code)

isValid
public boolean isValid()(Code)

makeNewInstance
public ConcreteFunction makeNewInstance()(Code)

Methods inherited from org.axiondb.functions.BaseFunction

public void addArgument(Selectable arg)(Code)(Java Doc)
public Selectable getArgument(int i)(Code)(Java Doc)
public int getArgumentCount()(Code)(Java Doc)
abstract public DataType getDataType()(Code)(Java Doc)
abstract public boolean isValid()(Code)(Java Doc)
public void setArgument(int i, Selectable arg)(Code)(Java Doc)
public void setVariableContext(VariableContext context)(Code)(Java Doc)
public String toString()(Code)(Java Doc)

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