fr.expression4j.core
Interface Catalog

All Known Implementing Classes:

CatalogImpl

public interface Catalog

Catalog of expressions. Manage a set of expressions. Used to parse or evaluate expression. Eache time the parser found a function in an expression, it check if it is define in the catalog given for the parsing.

Author:

SGINER

Method Summary

void	addConstant(java.lang.String name, MathematicalElement value) Add a constant to the catalog.
void	addExpression(Expression expression) add an expression to catalog.
MathematicalElement	getConstant(java.lang.String name) Get a constant from the catalog
Expression	getExpression(java.lang.String name) Get an expression from the catalog.
java.lang.String	getName() Get the catalog name.
java.util.List	listConstant() List all constant stored in catalog.
java.util.List	listExpression() List the content of the catalog

Method Detail

addExpression

void addExpression(Expression expression)

add an expression to catalog.

Parameters:

expression - expression to add.

getExpression

Expression getExpression(java.lang.String name)

Get an expression from the catalog.

Parameters:

name - name of the expression to get

Returns:

the expression if found, null otherwise.

listExpression

java.util.List listExpression()

List the content of the catalog

Returns:

list of functions name.

addConstant

void addConstant(java.lang.String name,
                 MathematicalElement value)

Add a constant to the catalog.

Parameters:

name - name of the constant.

value - value of the constant.

getConstant

MathematicalElement getConstant(java.lang.String name)

Get a constant from the catalog

Parameters:

name - constant name to get.

Returns:

the constant if found, null if not found.

listConstant

java.util.List listConstant()

List all constant stored in catalog.

Returns:

list of all constant stored in catalog a String.

getName

java.lang.String getName()

Get the catalog name.

Returns:

catalog name.