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com.bea.p13n.expression.operator
Class Operator

java.lang.Object
com.bea.p13n.expression.internal.ComplexExpressionImpl
com.bea.p13n.expression.operator.Operator

All Implemented Interfaces

Expression, com.bea.p13n.expression.ExpressionEvents, Serializable, Cloneable

Direct Known Subclasses:

ClassForName, ClassGetName, ClassNewInstance, CollectionOperator, ComparativeOperator, If, Instanceof, LogicalOperator, MathOperator, MethodCall, ObjectGetClass, ObjectHashCode, ObjectToString, PropertyRef, PropertyRef, StringOperator, SystemCurrentTimeMillis, SystemGetProperty, Variable, VariableBinding

public abstract class Operator

extends com.bea.p13n.expression.internal.ComplexExpressionImpl

Base class for all Operators in the expression package.

See Also

Serialized Form

Field Summary

Fields inherited from interface com.bea.p13n.expression.ExpressionEvents

EVENT_ADD_SUBEXPRESSION, EVENT_CLEAR_CACHE, EVENT_INTERNAL_MAX, EVENT_REMOVE_SUBEXPRESSION, EVENT_SET_CACHE_ENABLED, EVENT_SET_CACHED_VALUE, EVENT_SET_PARENT, EVENT_SET_SOURCE, EVENT_SET_SUBEXPRESSION, EVENT_SET_USER_DATA

Constructor Summary

protected	Operator() A default constructor that can used by multi-operand operators.
protected	Operator(Object unaryOperand) A constructor to be used by unary operators.
protected	Operator(Object lhs, Object rhs) A constructor to be used by binary operators.

Method Summary

protected Object	leftHandSide() Returns left hand side operand of a binary operator.
protected Object	operand() Returns unary operand of an unary operator.
protected Object	rightHandSide() Returns right hand side operand of a binary operator.

Methods inherited from class com.bea.p13n.expression.internal.ComplexExpressionImpl

addListener, addSubExpression, clearCache, clone, createProxyExpression, equals, getCachedValue, getParent, getSource, getSubExpression, getSubExpressionCount, getUserData, hashCode, isCached, isCacheEnabled, isEqualitySubExpression, notifyListeners, removeAllSubExpressions, removeListener, removeSubExpression, removeSubExpression, setCachedValue, setCacheEnabled, setParent, setSource, setSubExpression, setUserData, toString, write

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.bea.p13n.expression.Expression

getParameterSignature

Constructor Detail

Operator

protected Operator()

A default constructor that can used by multi-operand operators.

Operator

protected Operator(Object unaryOperand)

A constructor to be used by unary operators.

Parameters

unaryOperand - An operand to a unary operator.

Operator

protected Operator(Object lhs,
                   Object rhs)

A constructor to be used by binary operators.

Parameters

lhs - The left hand side operand.

rhs - The right hand side operand.

Method Detail

operand

protected Object operand()

Returns unary operand of an unary operator.

Returns

An Object representing an operand of an unary operator.

leftHandSide

protected Object leftHandSide()

Returns left hand side operand of a binary operator.

Returns

An Object representing a left hand side operand of a binary operator.

rightHandSide

protected Object rightHandSide()

Returns right hand side operand of a binary operator.

Returns

An Object representing a right hand side operand of a binary operator.

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