Package com.nt.udc.io

Class COSARExprFunc

java.lang.Object

com.nt.udc.io.COSARExpr

com.nt.udc.io.COSARExprFunc

public class COSARExprFunc
extends COSARExpr

This class represents the custom function call.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CALLBACK_KEY	This constant represents the key used to store Callback implementors in the HashMap passed in for expression evaluation.
protected COSARExpr[]	m_args	This member represents the argument expressions.
protected String	m_funcName	This members represents the function name.
protected COSARAttr[]	m_values	This member represents the argument values.
static final String	OSAR_KEY	This constant represents the key used to store an OSAR in the HashMap passed in for expression evaluation.

Fields inherited from class com.nt.udc.io.COSARExpr

m_bIsConstant

Constructor Summary

Constructors

Constructor	Description
COSARExprFunc(String funcName, ArrayList args)

Method Summary

Modifier and Type	Method	Description
COSARAttr	eval(HashMap symbols)	This function is used to evaluate the expression.
String	toString()

Methods inherited from class com.nt.udc.io.COSARExpr

isConstant

Methods inherited from class java.lang.Object

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

Field Details

CALLBACK_KEY

public static final String CALLBACK_KEY

This constant represents the key used to store Callback implementors in the HashMap passed in for expression evaluation. It should be used by objects evaluating this expression.

See Also:

• Constant Field Values

OSAR_KEY

public static final String OSAR_KEY

This constant represents the key used to store an OSAR in the HashMap passed in for expression evaluation. It should be used by objects evaluating this expression.

See Also:

• Constant Field Values

m_funcName

protected String m_funcName

This members represents the function name.

m_args

protected COSARExpr[] m_args

This member represents the argument expressions.

m_values

protected COSARAttr[] m_values

This member represents the argument values.

Constructor Details

COSARExprFunc

public COSARExprFunc(String funcName,
 ArrayList args)
              throws Exception

Throws:

Exception

Method Details

eval

public COSARAttr eval(HashMap symbols)
               throws Exception

Description copied from class: COSARExpr

This function is used to evaluate the expression. A symbol table is passed to help in retrieving the value of referenced symbols. The HashMap should contain values stored as COSARAttr objects, keyed by their associated symbol's name.

Overrides:

eval in class COSARExpr

Returns:

The expression's value

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

Returns:

A string representation of the OSAR expression