org.vedantatree.expressionoasis.expressions.property

Class UnaryPropertyExpression

java.lang.Object

org.vedantatree.expressionoasis.expressions.UnaryOperatorExpression

org.vedantatree.expressionoasis.expressions.property.UnaryPropertyExpression

All Implemented Interfaces:

Expression

public class UnaryPropertyExpression
extends UnaryOperatorExpression

This is the unary expression which access the property of a java object, and assume this java object with context object

Version:

1.0 Modified to make validation of parameters optional., 1.1

Author:

Mohit Gupta, Parmod Kamboj, Kris Marwood

Constructor Summary

Constructors

Constructor and Description
UnaryPropertyExpression()

Method Summary

Modifier and Type	Method and Description
Type	getReturnType() Gets the return type of the expression.
ValueObject	getValue() Executes and returns the value of this expression.
void	initialize(ExpressionContext expressionContext, Object parameters, boolean validate) Initializes the operand expression.
void	setValue(Object value) Sets the value
void	uninitialize(ExpressionContext expressionContext) Uninitializes the unary operator expression.

Methods inherited from class org.vedantatree.expressionoasis.expressions.UnaryOperatorExpression

accept, getOperandExpression, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

UnaryPropertyExpression

public UnaryPropertyExpression()

Method Detail

getValue

public ValueObject getValue()
                     throws ExpressionEngineException

Description copied from interface: Expression

Executes and returns the value of this expression. If expression is not at node level, it will further evaluate its related expression which may represents operands or operators and return the final outcome.

Returns:

the value of expression (after expression evaluation)

Throws:

ExpressionEngineException - if there is any problem during execution

See Also:

Expression.getValue()

setValue

public void setValue(Object value)
              throws ExpressionEngineException

Sets the value

Parameters:

value -

Throws:

ExpressionEngineException

initialize

public void initialize(ExpressionContext expressionContext,
                       Object parameters,
                       boolean validate)
                throws ExpressionEngineException

Description copied from class: UnaryOperatorExpression

Initializes the operand expression.

Specified by:

initialize in interface Expression

Overrides:

initialize in class UnaryOperatorExpression

Parameters:

expressionContext - contextual information, may help in initialization

parameters - for example, sub expressions and identifiers

Throws:

ExpressionEngineException - if there is any problem during execution

See Also:

org.vedantatree.expressionoasis.expressions.Expression#initialize(org.vedantatree.expressionoasis.ExpressionContext, java.lang.Object)

getReturnType

public Type getReturnType()
                   throws ExpressionEngineException

Description copied from interface: Expression

Gets the return type of the expression.

Specified by:

getReturnType in interface Expression

Overrides:

getReturnType in class UnaryOperatorExpression

Returns:

the type of expression

Throws:

ExpressionEngineException - If there is any problem during execution

See Also:

Expression.getReturnType()

uninitialize

public void uninitialize(ExpressionContext expressionContext)

Description copied from class: UnaryOperatorExpression

Uninitializes the unary operator expression.

Specified by:

uninitialize in interface Expression

Overrides:

uninitialize in class UnaryOperatorExpression

Parameters:

expressionContext - contextual information, may help in un-initialization

See Also:

Expression.uninitialize(org.vedantatree.expressionoasis.ExpressionContext)