Java OpenMaple Application Program Interface (API)

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    - ShortRTable クラス
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    - ComplexNumeric クラス
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    - List クラス
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    - RTable クラス
    - AlgebraicRTable クラス
    - ByteRTable クラス
    - ComplexDoubleRTable クラス
    - ComplexNumericRTable クラス
    - DoubleRTable クラス
    - FloatRTable クラス
    - IntRTable クラス
    - LongRTable クラス
    - NumericRTable クラス
    - ShortRTable クラス
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Java OpenMaple provides an interface between the Maple evaluation engine and a Java program. This is implemented using Java classes and Java interfaces. The classes allow Java programs to access the Maple evaluation engine. The interfaces allow the Maple evaluation engine to call Java functions.

Overview

To use the Java Open Maple interface, start by creating an Engine object. The Engine constructor accepts an object that implements the EngineCallBacks interface. These call backs are used to handle various events from the Maple engine. The Engine object can be used to evaluate a string containing Maple commands or to create new Maple data structures. The Engine object is essentially an object factory for creating Java objects that represent Maple data.

The various Maple data types have corresponding Java classes. These objects have member functions to allow the programmer to manipulate them. Here are a few examples:

•	The Name object represents a Maple name. A value can be assigned to a Name by using the assign member function. To access the value assigned to the Name the eval member function can be called.

•	A Procedure object represents a Maple procedure. The execute member function can be used to call the procedure.

There is an hierarchy among the Open Maple objects. All the Open Maple objects inherit from the Algebraic{OpenMaple/Java/Algebraic} class. This provides the functions that are common to all Maple objects, such as eval. In addition, the classes Numeric and RTable are sub-classes of Algebraic and are themselves parent classes.

To handle errors Maple objects throw a MapleException. In additon, user specified call backs can throw a MapleException to indicate that an error occured.

Interfaces

•	The following interfaces allow Java functions to be called from the Maple evaluation engine.

Interface Listing

EngineCallBacks

HelpCallBacks

com.maplesoft.openmaple.HelpCallBacks

•	The HelpCallBacks interface provides the functionality required to access the text of a help page.

writeAttrib

writeChar

com.maplesoft.openmaple.EngineCallBacks

•	The EngineCallBacks interface provides the functionality required to transfer general information between the user and Maple evaluation engine, for example, interrupt handling and warning, error, and status messages.

callBackCallBack	errorCallBack	queryInterrupt	readlineCallBack
redirectCallBack	statusCallBack	streamCallBack	textCallBack

Classes

•

The following classes are available to interface with the Maple evaluation engine. To access these classes, the jopenmaple.jar and externalcall.jar files must be in the classpath. As well, the Java Open Maple native library must be accessible to the dynamic loader. For more information, see the running page.

Class Listing

Algebraic	AlgebraicRTable	ByteRTable	ComplexDoubleRTable
ComplexNumeric	ComplexNumericRTable	DoubleRTable	Engine
EngineCallBacksDefault	Expseq	FloatRTable	HelpCallBacksDefault
IntRTable	List	LongRTable	MString
Name	Numeric	NumericRTable	Procedure
RTable	ShortRTable	Table

com.maplesoft.openmaple.Engine

•	The Engine class is used to start, restart, and stop the Maple session as well as evaluate Maple statements and create new Maple data structures.

Engine	evaluate	getHelp	newExpseq
newList	newMString	newName	newNumeric
newTable	restart	stop

com.maplesoft.openmaple.Algebraic

•	The Algebraic class is the parent class of all the classes that represent Maple objects. Its member functions provide access to all the basic functions that can be performed on an object.

dagEquals	dispose	eval	evalhf
isDisposed	isNULL	isSet	isStop
toString	uneval	unique

com.maplesoft.openmaple.Numeric

•	The Numeric class represents numeric objects (integers and floats). The Numeric class has member functions to convert the Maple object to the Java native types.

byteValue	doubleValue	floatValue	intValue
isByte	isInt	isInteger	isLong
isShort	isUnnamedZero	longValue	shortValue

com.maplesoft.openmaple.ComplexNumeric

•	The ComplexNumeric class represents complex numbers. Conceptually, a ComplexNumeric object contains two Numeric objects: its real part and its imaginary part.

imaginaryPart

realPart

com.maplesoft.openmaple.Name

•	The Name class represents a Maple name. Name publicly inherits from Algebraic.

assign

isAssigned

com.maplesoft.openmaple.Expseq

•	The Expseq class represents an expression sequence. Member functions allow for indexing into the expression sequence and returning its length.

assign

length

select

com.maplesoft.openmaple.List

•	The List class represents a list. Member functions allow for indexing into the list and returning its length.

assign

length

select

com.maplesoft.openmaple.Procedure

•	The Procedure class represents a procedure. Member functions allow for evaluating the procedure.

execute

executehf

com.maplesoft.openmaple.Table

•	The Table class represents a table. Data can be inserted and removed from the table and a table can be searched for a particular element.

com.maplesoft.openmaple.RTable

•	The RTable class represents an rtable. Datatype specific rtables are represented by sub-classes of RTable. These sub-classes have datatype specific functions. The RTable member functions perform operations applicable to any rtable.

copy	dimensions	lowerBound	numElements
upperBound

com.maplesoft.openmaple.AlgebraicRTable

•	The AlgebraicRTable class represents an rtable of type anything. It allows access to individual elements of the rtable as Algebraic objects.

assign

select

com.maplesoft.openmaple.ByteRTable

•	The ByteRTable class represents an rtable of type . It allows access to individual elements of the rtable as Java bytes.

assign

select

com.maplesoft.openmaple.ComplexDoubleRTable

•	The ComplexDoubleRTable class represents an rtable of type . It allows access to individual elements of the rtable as pairs of Java doubles.

assign	copyImaginary	copyReal	select
selectImaginary	selectReal

com.maplesoft.openmaple.ComplexNumericRTable

•	The ComplexNumericRTable class represents an rtable of type . It allows access to individual elements of the rtable as ComplexNumeric objects.

com.maplesoft.openmaple.DoubleRTable

•	The DoubleRTable class represents an rtable of type . It allows access to individual elements of the rtable as Java doubles.

assign

select

com.maplesoft.openmaple.FloatRTable

•	The FloatRTable class represents an rtable of type . It allows access to individual elements of the rtable as Java floats.

assign

select

com.maplesoft.openmaple.IntRTable

•	The IntRTable class represents an rtable of type . It allows access to individual elements of the rtable as Java integers.

assign

select

com.maplesoft.openmaple.LongRTable

•	The LongRTable class represents an rtable of type . It allows access to individual elements of the rtable as Java longs.

assign

select

com.maplesoft.openmaple.NumericRTable

•	The NumericRTable class represents an rtable of type . It allows access to individual elements of the rtable as Numeric objects.

assign

select

com.maplesoft.openmaple.ShortRTable

•	The ShortRTable class represents an rtable of type . It allows access to individual elements of the rtable as Numeric objects.

assign

select

com.maplesoft.externalcall.MapleException

•	The MapleException class is used when errors are raised within Java Open Maple. See also the ?MapleException class constructor help page.

getArg

getArgCount

com.maplesoft.openmaple.HelpCallBacksDefault

•	The HelpCallBacksDefault provides a basic implementation of the HelpCallBacks interface. This class can be used directly or it can be sub-classed to override the member functions.

writeAttrib

writeChar

com.maplesoft.openmaple.EngineCallBacksDefault

•	The EngineCallBacksDefault provides a basic implementation of the EngineCallBacks interface. This class can be used directly or it can be sub-classed to override the member functions.