com.elegantj.data.parser.postfixmathcommand
Class PostfixMathCommand

java.lang.Object
  com.elegantj.data.parser.postfixmathcommand.PostfixMathCommand

All Implemented Interfaces:

PostfixMathCommandI

Direct Known Subclasses:

Abs, Add, And, Asc, Avg, BooleanValue, ByteValue, Ceil, Char, Cos, Count, CumulativePercent, CumulativeSum, DateDate, DateTime, Day, DayName, DayNumber, DaysAfter, Divide, DoubleValue, Equal, Exp, Fact, Fill, First, FloatValue, Floor, Greater, GreaterEqual, Hour, If, IndexOfChar, IndexOfString, IntValue, IsDate, IsNull, IsNumber, IsTime, Large, Last, Left, LeftTrim, Length, Less, LessEqual, Log, LogTen, LongValue, LowerCase, Match, Max, Maximum, Median, Min, Minimum, Minute, Mod, Mode, Month, Multiply, NotEqual, Now, Or, Page, PageAcross, PageCount, PageCountAcross, Percent, Pi, Power, RandomNumber, RelativeDate, RelativeTime, Replace, Reverse, Rgb, Right, RightTrim, Round, Second, ShortValue, Sign, Sin, Small, Space, Sqrt, Substring, Subtract, Sum, Tan, TimeTime, Today, ToString, Trim, Truncate, UMinus, UpperCase, WhenThen, Year

public abstract class PostfixMathCommand

extends java.lang.Object

implements PostfixMathCommandI

The PostfixMathCommand abstract class provides the utitlity methods to execute and process the command method by node.
The subclass of this class should override the run method. Determines the number of the arguments, types of the arguments and return parameter type.

Constructor Summary

PostfixMathCommand(int numberOfParameters, java.lang.Class returnType, java.lang.Class[] parameterTypes)
Creates a PostfixMathCommand with specified number of arguments, types of the arguments and return type.

Method Summary

void	checkStack(java.util.Stack inStack) Checks the stack of the arguments.
int	getNumberOfParameters() Returns the number of the arguments
java.lang.Class[]	getParameterTypes() Returns the types of the arguments
java.lang.Class	getReturnType() Returns the return parameter type

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.elegantj.data.parser.postfixmathcommand.PostfixMathCommandI

run

Constructor Detail

PostfixMathCommand

public PostfixMathCommand(int numberOfParameters,
                          java.lang.Class returnType,
                          java.lang.Class[] parameterTypes)

Creates a PostfixMathCommand with specified number of arguments, types of the arguments and return type.

Parameters:

numberOfParameters - the number of the arguments

returnType - the return parameter type

parameterTypes - the types of the arguments

Method Detail

checkStack

public void checkStack(java.util.Stack inStack)
                throws CommandFailedException,
                       ArgumentRequiredException,
                       InvalidArgumentException

Checks the stack of the arguments. It Checks the number of arguments, type of arguments and the return type.

Parameters:

inStack - the stack of the arguments

Throws:

CommandFailedException

ArgumentRequiredException

InvalidArgumentException

getNumberOfParameters

public int getNumberOfParameters()

Returns the number of the arguments

Returns:

an integer representing the number of the arguments

getReturnType

public java.lang.Class getReturnType()

Returns the return parameter type

Returns:

a class representing the return parameter type

getParameterTypes

public java.lang.Class[] getParameterTypes()

Returns the types of the arguments

Returns:

a class array representing the types of the arguments