Package jmri.implementation

Class AbstractTurnout

    • Constructor Detail

      • AbstractTurnout

        protected AbstractTurnout​(java.lang.String systemName)

      • AbstractTurnout

        protected AbstractTurnout​(java.lang.String systemName,
                          java.lang.String userName)

    • Method Detail

      • getBeanType

        @Nonnull
public java.lang.String getBeanType()
        For instances in the code where we are dealing with just a bean and a message needs to be passed to the user or in a log.
        Specified by:
        getBeanType in interface NamedBean
        Returns:
        a string of the bean type, eg Turnout, Sensor etc

      • forwardCommandChangeToLayout

        protected abstract void forwardCommandChangeToLayout​(int s)
        Handle a request to change state, typically by sending a message to the layout in some child class. Public version (used by TurnoutOperator) sends the current commanded state without changing it. Implementing classes will typically check the value of s and send a system specific sendMessage command.
        Parameters:
        s - new state value

      • stateChangeCheck

        public boolean stateChangeCheck​(int newState)
                         throws java.lang.IllegalArgumentException
        Preprocess a Turnout state change request for forwardCommandChangeToLayout(int) Public access to allow use in tests.
        Parameters:
        newState - the Turnout state command value passed
        Returns:
        true if a Turnout.CLOSED was requested and Turnout is not set to _inverted
        Throws:
        java.lang.IllegalArgumentException

      • statesOk

        protected boolean statesOk​(int state)
        Look for the case in which the state is neither Closed nor Thrown, which we can't handle. Separate method to allow it to be used in stateChangeCheck(int) and Xpa/MqttTurnout.
        Parameters:
        state - the Turnout state passed
        Returns:
        false if s = Turnout.THROWN, which is what we want

      • newCommandedState

        protected void newCommandedState​(int s)
        Set a new Commanded state, if need be notifying the listeners, but do NOT send the command downstream.

        This is used when a new commanded state is noticed from another command.

        Parameters:
        s - new state

      • getKnownState

        public int getKnownState()
        Query the known state. This is a bound parameter, so you can also register a listener to be informed of changes. A result is always returned; if no other feedback method is available, the commanded state will be used.
        Specified by:
        getKnownState in interface DigitalIO
        Returns:
        the known state

      • setCommandedState

        public void setCommandedState​(int s)
        Public access to changing turnout state. Sets the commanded state and, if appropriate, starts a TurnoutOperator to do its thing. If there is no TurnoutOperator (not required or nothing suitable) then just tell the layout and hope for the best.
        Specified by:
        setCommandedState in interface DigitalIO
        Parameters:
        s - commanded state to set

      • getCommandedState

        public int getCommandedState()
        Query the commanded state. This is a bound parameter, so you can also register a listener to be informed of changes.
        Specified by:
        getCommandedState in interface DigitalIO
        Returns:
        the commanded state

      • newKnownState

        public void newKnownState​(int s)
        Add a newKnownState() for use by implementations.

        Use this to update internal information when a state change is detected outside the Turnout object, e.g. via feedback from sensors on the layout.

        If the layout status of the Turnout is observed to change to THROWN or CLOSED, this also sets the commanded state, because it's assumed that somebody somewhere commanded that move. If it's observed to change to UNKNOWN or INCONSISTENT, that's perhaps either an error or a move in progress, and no change is made to the commanded state.

        This implementation sends a command to the layout for the new state if going to THROWN or CLOSED, because there may be others listening to network state.

        This method is not intended for general use, e.g. for users to set the KnownState, so it doesn't appear in the Turnout interface.

        On change, fires Property Change "KnownState".

        Parameters:
        s - New state value

      • isConsistentState

        public boolean isConsistentState()
        Show whether state is one you can safely run trains over.
        Specified by:
        isConsistentState in interface DigitalIO
        Returns:
        true if state is a valid one and the known state is the same as commanded.

      • setKnownStateToCommanded

        void setKnownStateToCommanded()
        The name pretty much says it.

        Triggers all listeners, etc. For use by the TurnoutOperator classes.

      • setState

        public void setState​(int s)
        Implement a shorter name for setCommandedState.

        This generally shouldn't be used by Java code; use setCommandedState instead. The is provided to make Jython script access easier to read.

        Note that getState() and setState(int) are not symmetric: getState is the known state, and set state modifies the commanded state.

        Specified by:
        setState in interface NamedBean
        Parameters:
        s - new state

      • getState

        public int getState()
        Implement a shorter name for getKnownState.

        This generally shouldn't be used by Java code; use getKnownState instead. The is provided to make Jython script access easier to read.

        Note that getState() and setState(int) are not symmetric: getState is the known state, and set state modifies the commanded state.

        Specified by:
        getState in interface NamedBean
        Returns:
        current state

      • describeState

        @Nonnull
public java.lang.String describeState​(int state)
        Provide human-readable, localized version of state value.

        This method is intended for use when presenting to a human operator.

        Specified by:
        describeState in interface NamedBean
        Overrides:
        describeState in class AbstractNamedBean
        Parameters:
        state - the state to describe
        Returns:
        the state in localized form

      • getControlType

        public int getControlType()
        Get control type.
        Specified by:
        getControlType in interface Turnout
        Returns:
        0 for steady state or the number of time units the control pulses

      • setControlType

        public void setControlType​(int num)
        Set control type.
        Specified by:
        setControlType in interface Turnout
        Parameters:
        num - 0 for steady state or the number of time units the control pulses

      • getValidFeedbackModes

        public java.util.Set<java.lang.Integer> getValidFeedbackModes()
        Get a list of valid feedback types. The valid types depend on the implemented system.
        Specified by:
        getValidFeedbackModes in interface Turnout
        Returns:
        array of feedback types

      • getValidFeedbackTypes

        public int getValidFeedbackTypes()
        Get a representation of the feedback type. This is the OR of possible values: DIRECT, EXACT, etc. The valid combinations depend on the implemented system.
        Specified by:
        getValidFeedbackTypes in interface Turnout
        Returns:
        the ORed combination of feedback types

      • getValidFeedbackNames

        @Nonnull
public java.lang.String[] getValidFeedbackNames()
        Get a human readable representation of the feedback type. The values depend on the implemented system.
        Specified by:
        getValidFeedbackNames in interface Turnout
        Returns:
        the names of the feedback types or an empty list if no feedback is available

      • setFeedbackMode

        public void setFeedbackMode​(@Nonnull
                            java.lang.String mode)
                     throws java.lang.IllegalArgumentException
        Set the feedback mode from a human readable name. This must be one of the names defined in a previous Turnout.getValidFeedbackNames() call.
        Specified by:
        setFeedbackMode in interface Turnout
        Parameters:
        mode - the feedback type name
        Throws:
        java.lang.IllegalArgumentException - if mode is not valid

      • setFeedbackMode

        public void setFeedbackMode​(int mode)
                     throws java.lang.IllegalArgumentException
        On change, fires Property Change "feedbackchange". Set the feedback mode from a integer. This must be one of the bit values defined in a previous Turnout.getValidFeedbackTypes() call. Having more than one bit set is an error.
        Specified by:
        setFeedbackMode in interface Turnout
        Parameters:
        mode - the feedback type to set
        Throws:
        java.lang.IllegalArgumentException - if mode is not valid

      • setInverted

        public void setInverted​(boolean inverted)
        On change, fires Property Change "inverted". Get turnout inverted. When a turnout is inverted the Turnout.CLOSED and Turnout.THROWN states are reversed on the layout.
        Specified by:
        setInverted in interface Turnout
        Parameters:
        inverted - true if inverted; false otherwise

      • getInverted

        public final boolean getInverted()
        Get the turnout inverted state. If true, commands sent to the layout are reversed. Thrown becomes Closed, and Closed becomes Thrown.

        Used in polling loops in system-specific code, so made final to allow optimization.

        Specified by:
        getInverted in interface Turnout
        Returns:
        inverted status

      • canInvert

        public boolean canInvert()
        Determine if the turnouts can be inverted. If true, inverted turnouts are supported.
        Specified by:
        canInvert in interface Turnout
        Returns:
        invert supported

      • setLocked

        public void setLocked​(int turnoutLockout,
                      boolean locked)
        Turnouts that are locked should only respond to JMRI commands to change state. We simulate a locked turnout by monitoring the known state (turnout feedback is required) and if we detect that the known state has changed, negate it by forcing the turnout to return to the commanded state. Turnouts that have local buttons can also be locked if their decoder supports it. On change, fires Property Change "locked".
        Specified by:
        setLocked in interface Turnout
        Parameters:
        turnoutLockout - lockout state to monitor. Possible values Turnout.CABLOCKOUT, Turnout.PUSHBUTTONLOCKOUT. Can be combined to monitor both states.
        locked - true if turnout to be locked

      • getLocked

        public boolean getLocked​(int turnoutLockout)
        Determine if turnout is locked. There are two types of locks: cab lockout, and pushbutton lockout.
        Specified by:
        getLocked in interface Turnout
        Parameters:
        turnoutLockout - turnout to check
        Returns:
        locked state, true if turnout is locked

      • getPossibleLockModes

        public int getPossibleLockModes()
        This implementation by itself doesn't provide locking support. Override this in subclasses that do.
        Specified by:
        getPossibleLockModes in interface Turnout
        Returns:
        One of 0 for none

      • canLock

        public boolean canLock​(int turnoutLockout)
        This implementation by itself doesn't provide locking support. Override this in subclasses that do.
        Specified by:
        canLock in interface Turnout
        Parameters:
        turnoutLockout - the type of lock, one of CABLOCKOUT, PUSHBUTTONLOCKOUT or BOTH = CABLOCKOUT | PUSHBUTTONLOCKOUT
        Returns:
        false for not supported

      • enableLockOperation

        public void enableLockOperation​(int turnoutLockout,
                                boolean enabled)
        Enable turnout lock operators. A turnout can be locked to prevent it being thrown from a cab or push button on the layout if supported by the protocol. Not implemented in AbstractTurnout.
        Specified by:
        enableLockOperation in interface Turnout
        Parameters:
        turnoutLockout - the type of lock
        enabled - true if locking is enabled for the given type; false otherwise

      • setReportLocked

        public void setReportLocked​(boolean reportLocked)
        When true, report to console anytime a cab attempts to change the state of a turnout on the layout. When a turnout is cab locked, only JMRI is allowed to change the state of a turnout. On setting changed, fires Property Change "reportlocked".
        Specified by:
        setReportLocked in interface Turnout
        Parameters:
        reportLocked - report locked state

      • getReportLocked

        public boolean getReportLocked()
        When true, report to console anytime a cab attempts to change the state of a turnout on the layout. When a turnout is cab locked, only JMRI is allowed to change the state of a turnout.
        Specified by:
        getReportLocked in interface Turnout
        Returns:
        report locked state

      • getValidDecoderNames

        @Nonnull
public java.lang.String[] getValidDecoderNames()
        Get a human readable representation of the decoder types.
        Specified by:
        getValidDecoderNames in interface Turnout
        Returns:
        a list of known stationary decoders that can be specified for locking

      • getDecoderName

        public java.lang.String getDecoderName()
        Get a human readable representation of the locking decoder type for this turnout. In AbstractTurnout this String defaults to PushbuttonPacket.unknown , ie "None"
        Specified by:
        getDecoderName in interface Turnout
        Returns:
        the name of the decoder type; null indicates none defined

      • setDecoderName

        public void setDecoderName​(java.lang.String decoderName)
        Set a human readable representation of the locking decoder type for this turnout. On change, fires Property Change "decoderNameChange".
        Specified by:
        setDecoderName in interface Turnout
        Parameters:
        decoderName - the name of the decoder type

      • getInhibitOperation

        public boolean getInhibitOperation()
        Get if automatically retrying an operation is blocked for this turnout.
        Specified by:
        getInhibitOperation in interface Turnout
        Returns:
        true if retrying is disabled; false otherwise

      • setInhibitOperation

        public void setInhibitOperation​(boolean io)
        Set if automatically retrying an operation is blocked for this turnout.
        Specified by:
        setInhibitOperation in interface Turnout
        Parameters:
        io - true if retrying is to be disabled; false otherwise

      • getTurnoutOperator

        protected TurnoutOperator getTurnoutOperator()
        Find the TurnoutOperation class for this turnout, and get an instance of the corresponding operator. Override this function if you want another way to choose the operation.
        Returns:
        newly-instantiated TurnoutOperator, or null if nothing suitable

      • getFeedbackModeForOperation

        protected int getFeedbackModeForOperation()
        Allow an actual turnout class to transform private feedback types into ones that the generic turnout operations know about.
        Returns:
        apparent feedback mode for operation lookup

      • setInitialKnownStateFromFeedback

        public void setInitialKnownStateFromFeedback()
        Sets the initial known state (CLOSED,THROWN,UNKNOWN) from feedback information, if appropriate.

        This method is designed to be called only when Turnouts are loaded and when a new Turnout is defined in the Turnout table.

        No change to known state is made if feedback information is not available. If feedback information is inconsistent, or if sensor definition is missing in ONESENSOR and TWOSENSOR feedback, turnout state is set to UNKNOWN.

        Specified by:
        setInitialKnownStateFromFeedback in interface Turnout

      • propertyChange

        public void propertyChange​(java.beans.PropertyChangeEvent evt)
        React to sensor changes by changing the KnownState if using an appropriate sensor mode.
        Specified by:
        propertyChange in interface java.beans.PropertyChangeListener

      • sensorPropertyChange

        protected void sensorPropertyChange​(java.beans.PropertyChangeEvent evt)

      • setBinaryOutput

        public void setBinaryOutput​(boolean state)
        Use a binary output for sending commands. This appears to expose a LocoNet-specific feature.
        Specified by:
        setBinaryOutput in interface Turnout
        Parameters:
        state - true if the outputs are binary; false otherwise

      • dispose

        public void dispose()
        Deactivate this object, so that it releases as many resources as possible and no longer effects others.

        For example, if this object has listeners, after a call to this method it should no longer notify those listeners. Any native or system-wide resources it maintains should be released, including threads, files, etc.

        It is an error to invoke any other methods on this object once dispose() has been called. Note, however, that there is no guarantee about behavior in that case.

        Afterwards, references to this object may still exist elsewhere, preventing its garbage collection. But it's formally dead, and shouldn't be keeping any other objects alive. Therefore, this method should null out any references to other objects that this NamedBean contained.

        Specified by:
        dispose in interface NamedBean
        Overrides:
        dispose in class AbstractNamedBean

      • isCanFollow

        public boolean isCanFollow()
        Check if this Turnout can follow the state of another Turnout.
        Specified by:
        isCanFollow in interface Turnout
        Returns:
        true if this Turnout is capable of following; false otherwise

      • isFollowingCommandedState

        public boolean isFollowingCommandedState()
        Check if this Turnout is following all states or only the non-commanded states of the leading Turnout.
        Specified by:
        isFollowingCommandedState in interface Turnout
        Returns:
        true if following all states; false otherwise

      • setFollowingCommandedState

        public void setFollowingCommandedState​(boolean following)
        Set if this Turnout follows all states or only the non-commanded states of the leading Turnout.

        A Turnout can be commanded to be Turnout.THROWN or Turnout.CLOSED, but can also have additional states NamedBean.INCONSISTENT and NamedBean.UNKNOWN. There are some use cases where a following Turnout should match all states of the leading Turnout, in which case this should be true, but there are also use cases where the following Turnout should only match the INCONSISTENT and UNKNOWN states of the leading Turnout, but should otherwise be independently commanded, in which case this should be false.

        Specified by:
        setFollowingCommandedState in interface Turnout
        Parameters:
        following - true to have all states match leading turnout; false to only have non-commanded states match