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 and Description
static java.lang.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 java.lang.String	m_funcName This members represents the function name.
protected COSARAttr[]	m_values This member represents the argument values.
static java.lang.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 and Description
COSARExprFunc(java.lang.String funcName, java.util.ArrayList args)

Method Summary

Methods

Modifier and Type	Method and Description
COSARAttr	eval(java.util.HashMap symbols) This function is used to evaluate the expression.
java.lang.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 Detail

CALLBACK_KEY

public static final java.lang.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 java.lang.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 java.lang.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 Detail

COSARExprFunc

public COSARExprFunc(java.lang.String funcName,
             java.util.ArrayList args)
              throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

eval

public COSARAttr eval(java.util.HashMap symbols)
               throws java.lang.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:

java.lang.Exception

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

A string representation of the OSAR expression