Package jmri.jmrit.logixng

Interface DigitalExpression

All Superinterfaces:

Base, PropertyChangeProvider

All Known Subinterfaces:

DigitalExpressionBean, FemaleDigitalExpressionSocket, MaleDigitalExpressionSocket

All Known Implementing Classes:

AbstractDigitalExpression, And, Antecedent, ConnectionName, DebuggerMaleDigitalExpressionSocket, DefaultFemaleDigitalExpressionSocket, DefaultMaleDigitalExpressionSocket, DigitalCallModule, DigitalFormula, ExpressionAudio, ExpressionBlock, ExpressionClock, ExpressionConditional, ExpressionDispatcher, ExpressionEntryExit, ExpressionLight, ExpressionLinuxLinePower, ExpressionLocalVariable, ExpressionMemory, ExpressionOBlock, ExpressionPower, ExpressionReference, ExpressionReporter, ExpressionScript, ExpressionSection, ExpressionSensor, ExpressionSensorEdge, ExpressionSignalHead, ExpressionSignalMast, ExpressionSlotUsage, ExpressionTransit, ExpressionTurnout, ExpressionWarrant, False, FileAsFlag, Hold, LastResultOfDigitalExpression, LogData, Not, Or, Timer, TriggerOnce, True

public interface DigitalExpression
extends Base

DigitalExpressionBean is used in LogixNG to answer a question that can give the answers 'true' or 'false'.

Nested Class Summary

Nested classes/interfaces inherited from interface jmri.jmrit.logixng.Base

Base.PrintTreeSettings, Base.RunnableWithBase, Base.RunnableWithBaseThrowException

Field Summary

Fields inherited from interface jmri.jmrit.logixng.Base

PRINT_LINE_NUMBERS_FORMAT, PROPERTY_CHILD_COUNT, PROPERTY_CHILD_REORDER, PROPERTY_LAST_RESULT_CHANGED, PROPERTY_SOCKET_CONNECTED, PROPERTY_SOCKET_DISCONNECTED, SEPARATOR, SOCKET_CONNECTED, SOCKET_DISCONNECTED

Method Summary

Modifier and Type	Method	Description
boolean	evaluate()	Evaluate this expression.

Methods inherited from interface jmri.jmrit.logixng.Base

addPropertyChangeListener, addPropertyChangeListener, deepCopyChildren, dispose, doSocketOperation, existsInTree, forEntireTree, forEntireTreeWithException, getCategory, getChild, getChildCount, getComment, getConditionalNG, getDeepCopy, getListenerRef, getListenerRefs, getListenerRefsIncludingChildren, getLogixNG, getLongDescription, getLongDescription, getModule, getNumPropertyChangeListeners, getParent, getPropertyChangeListenersByReference, getRoot, getShortDescription, getShortDescription, getSystemName, getUsageDetail, getUsageTree, getUserName, hasChild, isActive, isEnabled, isSocketOperationAllowed, printTree, printTree, printTree, printTree, printTree, registerListeners, setComment, setParent, setParentForAllChildren, setup, setUserName, unregisterListeners, updateListenerRef, vetoableChange

Methods inherited from interface jmri.beans.PropertyChangeProvider

addPropertyChangeListener, addPropertyChangeListener, getPropertyChangeListeners, getPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener

Method Detail

evaluate

boolean evaluate()
          throws JmriException

Evaluate this expression.

Returns:

the result of the evaluation

Throws:

JmriException - when an exception occurs