Package com.singularsys.extensions.mathml.builder

Class FunctionBuilder

java.lang.Object

com.singularsys.extensions.mathml.builder.ApplyConstructor

com.singularsys.extensions.mathml.builder.FunctionBuilder

All Implemented Interfaces:

MathMLFragmentBuilder

public class FunctionBuilder
extends ApplyConstructor
implements MathMLFragmentBuilder

Builds xml-fragments for jep functions. Most functions are converted to use the <apply> tag with the first child a specific mathml function element. For example sin(x) becomes <apply><sin/><ci>x</ci></apply> The functions map translate jep function name to MathML element names, and elements can be added using putFunction. Some functions like lg (base-2 log) have special behaviour implement by individual MathMLFragmentBuilder, special functions can be added using putSpecialFunction. Unknown functions are handled by the unknownFunctionBuilder, by default this throws an exception, but it can be configured to produce <csymbol> or <fn> elements.

Author:

Richard Morris

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FunctionBuilder.CSymbolBuilder	Class to build a CSymbol element, with the name of the jep-function.
static class	FunctionBuilder.ErrorBuilder	Default builder for unknown function, throws a jep exception.
static class	FunctionBuilder.FnBuilder	Class to build a Fn element, with the name of the jep-function.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Map<String,String>	functions
protected final Map<String,MathMLFragmentBuilder>	specialFunctions
protected MathMLFragmentBuilder	unknownFunctionBuilder

Constructor Summary

Constructors

Constructor	Description
FunctionBuilder()

Method Summary

Modifier and Type	Method	Description
Element	build(Node n, Document d, MathMLDocumentBuilder db)	Builds a Element for a jep Node.
protected Element	buildStandardFunction(Node node, Document doc, MathMLDocumentBuilder db)
Map<String,String>	getFunctions()	Gets the map of standard functions
Map<String,MathMLFragmentBuilder>	getSpecialFunctions()	Gets the map of special functions
MathMLFragmentBuilder	getUnknownFunctionBuilder()
String	putFunction(String key, String value)	Adds a standard function
MathMLFragmentBuilder	putSpecialFunction(String key, MathMLFragmentBuilder value)	Adds a special function
void	setUnknownFunctionBuilder(MathMLFragmentBuilder unknownFunctionBuilder)

Methods inherited from class java.lang.Object

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

Field Details

unknownFunctionBuilder

protected MathMLFragmentBuilder unknownFunctionBuilder

functions

protected final Map<String,String> functions

specialFunctions

protected final Map<String,MathMLFragmentBuilder> specialFunctions

Constructor Details

FunctionBuilder

public FunctionBuilder()

Method Details

build

public Element build(Node n,
 Document d,
 MathMLDocumentBuilder db)
              throws JepException

Description copied from interface: MathMLFragmentBuilder

Builds a Element for a jep Node.

Specified by:

build in interface MathMLFragmentBuilder

Parameters:

n - The jep sub expression.

d - The document to create the element in.

db - Used create elements and attributes and child nodes.

Returns:

element representing the node

Throws:

JepException

buildStandardFunction

protected Element buildStandardFunction(Node node,
 Document doc,
 MathMLDocumentBuilder db)
                                 throws JepException

Throws:

JepException

putFunction

public String putFunction(String key,
 String value)

Adds a standard function

Parameters:

key - jep function name

value - MathML element name

Returns:

old value for function or null

putSpecialFunction

public MathMLFragmentBuilder putSpecialFunction(String key,
 MathMLFragmentBuilder value)

Adds a special function

Parameters:

key - jep function name

value - builder to handle this type of function

Returns:

old value for function or null

getFunctions

public Map<String,String> getFunctions()

Gets the map of standard functions

Returns:

the map

getSpecialFunctions

public Map<String,MathMLFragmentBuilder> getSpecialFunctions()

Gets the map of special functions

Returns:

the map

getUnknownFunctionBuilder

public MathMLFragmentBuilder getUnknownFunctionBuilder()

setUnknownFunctionBuilder

public void setUnknownFunctionBuilder(MathMLFragmentBuilder unknownFunctionBuilder)