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oracle.security.jps.service.policystore.info
Class Expression

java.lang.Object
oracle.security.jps.service.policystore.info.Expression

All Implemented Interfaces:

ExpressionComponent

public class Expression

extends java.lang.Object

implements ExpressionComponent

Represents an expression. An expression has a function and one or more arguments. The number of arguments depends on the function. The arguments are of type ExpressionComponent, so they can contain other expressions/ expressioncomponents.

Nested Class Summary

Nested classes/interfaces inherited from interface oracle.security.jps.service.policystore.info.ExpressionComponent

ExpressionComponent.Type

Constructor Summary

Expression(FunctionEntry funcEntry)
An expression must have a root function and its information must be provided to the constructor.

Method Summary

void	addExpressionComponent(ExpressionComponent comp) Adds the component to the list of components for this expression.
ExpressionComponent.Type	getComponentType() Returns type of the component.
java.util.List<ExpressionComponent>	getExpressionComponents() List of arguments to the expression.
FunctionEntry	getFunctionEntry() Returns function entry.
boolean	isValid() Validates the component.
void	setExpressionComponents(java.util.List<ExpressionComponent> comps) Sets the components of this expression.
java.lang.String	toString() Returns a free-form string representation of this expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression

public Expression(FunctionEntry funcEntry)
           throws PolicyStoreException

An expression must have a root function and its information must be provided to the constructor.

Throws:

java.lang.IllegalArgumentException - if function name is null.

PolicyStoreException

Method Detail

getFunctionEntry

public FunctionEntry getFunctionEntry()

Returns function entry.

Returns:

getExpressionComponents

public java.util.List<ExpressionComponent> getExpressionComponents()

List of arguments to the expression.

Returns:

list of <IExpressionComponent>

addExpressionComponent

public void addExpressionComponent(ExpressionComponent comp)
                            throws PolicyStoreException

Adds the component to the list of components for this expression. The components are added in order. For example, if an expression has function F(a,b,c); components a, b, c must be added in sequence. This is a utility method. No delete or insert methods are provided. If the list of expression components needs to be changed while building an expression, use method setExpressionComponents.

Parameters:

comp -

Throws:

PolicyStoreException - in case of errors.

setExpressionComponents

public void setExpressionComponents(java.util.List<ExpressionComponent> comps)
                             throws PolicyStoreException

Sets the components of this expression. The components are added in order. For example, if an expression has function F(a,b,c); components a, b, c must be added in sequence.

Parameters:

comps -

Throws:

PolicyStoreException

getComponentType

public ExpressionComponent.Type getComponentType()

Returns type of the component.

Specified by:

getComponentType in interface ExpressionComponent

Returns:

isValid

public boolean isValid()

Validates the component. Expected to be invoked at management time.

toString

public java.lang.String toString()

Returns a free-form string representation of this expression.

Overrides:

toString in class java.lang.Object

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