com.ibm.tivoli.maximo.miniapps.scheduler.constraint

Class AbstractCriticalPathMethod

java.lang.Object

com.ibm.tivoli.maximo.miniapps.scheduler.constraint.AbstractCriticalPathMethod

All Implemented Interfaces:

ICriticalPathMethod

Direct Known Subclasses:

CriticalPathMethod, SchedulerMaxCriticalPathMethod

public abstract class AbstractCriticalPathMethod
extends java.lang.Object
implements ICriticalPathMethod

Abstract class to calculate critical path for a schedule.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.Object	model
protected SKDActivityDuration	skdActivityDuration
protected UserInfo	userInfo
protected java.util.TimeZone	userTimeZone

Constructor Summary

Constructors

Constructor and Description
AbstractCriticalPathMethod(java.lang.Object model, UserInfo userInfo)

Method Summary

Modifier and Type	Method and Description
protected abstract java.util.Iterator	activityAncestorsIterator(IMXActivity activity)
protected abstract java.util.Iterator	activityPreorderIterator()
protected abstract java.util.Iterator	activityPreorderIterator(IMXActivity activity)
protected java.util.Date	addDurationToDate(java.util.Date date, ilog.views.gantt.IlvDuration duration) Returns a new Date that is the sum of the specified time and this duration
protected java.util.Date[]	applyPredecessorConstraints(IMXActivity activity, java.util.Date parentEarlyStart, ilog.views.gantt.IlvDuration activityDuration) Apply constraint type to the activity and get early and finish dates
protected java.util.Date[]	applySuccessorConstraints(IMXActivity activity, java.util.Date parentLatestFinish, ilog.views.gantt.IlvDuration activityDuration) Apply constraint type to the activity and get latest start and finish dates
protected abstract java.util.Iterator	childActivityIterator(IMXActivity activity)
protected void	clearCPMProperties() Clear the CPM properties for all activities.
protected void	clearCPMProperties(IMXActivity[] selectedActivities) Clear the CPM properties for selected activities.
protected void	computeEarlyStartAndFinish(IMXActivity activity) Forward pass to compute the early start and early finish
protected void	computeEarlyStartAndFinish(IMXActivity activity, java.util.Date parentEarlyStart) Forward pass to compute the early start and early finish
protected void	computeFloat(IMXActivity activity) Compute float for an activity
protected void	computeLateStartAndFinish(IMXActivity activity) Backward pass to compute the late start and late finish
protected void	computeLateStartAndFinish(IMXActivity activity, java.util.Date parentLatestFinish) Backward pass to compute the late start and late finish
boolean	computeSchedule() Computed the critical path for the project
IMXActivity[]	computeSchedule(IMXActivity[] selectedActivities) Computes the critical path for selected activities
protected abstract java.util.Iterator	constraintIteratorFromActivity(IMXActivity activity)
protected abstract java.util.Iterator	constraintIteratorToActivity(IMXActivity activity)
protected abstract IMXActivity	getActivityByID(java.lang.String activityID)
protected double	getActivityDuration(IMXActivity activity)
protected abstract int	getChildActivityCount(IMXActivity activity)
protected ilog.views.gantt.IlvDuration	getLeadLagDuration(java.lang.Double leadLagHours) Get the lead/lag in IlvDuration
protected abstract IMXActivity	getRootActivity()
protected ilog.views.gantt.IlvTimeInterval	getTimeInterval(IMXActivity activity, boolean useEarlyDates)
protected abstract void	handleModifiedActivity(IMXActivity activity)
protected abstract boolean	recalculateParentActivity(IMXActivity activity)
protected void	setCriticalThreshold(ilog.views.gantt.IlvDuration ilvduration) Sets the critical threshold for the project
void	setProjectEnd(java.util.Date projectEnd) Sets project end date
void	setProjectStart(java.util.Date projectStart) Sets project start date
protected java.util.Date	subtractDurationFromDate(java.util.Date date, ilog.views.gantt.IlvDuration duration) Returns a new Date that is the subtraction of the specified time and this duration
protected java.util.Date	truncateDate(java.util.Date date) Removes seconds and milliseconds from Activity dates, in order to avoid interference on float values calculations.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

userInfo

protected UserInfo userInfo

userTimeZone

protected java.util.TimeZone userTimeZone

model

protected java.lang.Object model

skdActivityDuration

protected SKDActivityDuration skdActivityDuration

Constructor Detail

AbstractCriticalPathMethod

public AbstractCriticalPathMethod(java.lang.Object model,
                                  UserInfo userInfo)

Method Detail

setProjectStart

public void setProjectStart(java.util.Date projectStart)

Sets project start date

Specified by:

setProjectStart in interface ICriticalPathMethod

Parameters:

projectStart -

setProjectEnd

public void setProjectEnd(java.util.Date projectEnd)

Sets project end date

Parameters:

projectEnd -

setCriticalThreshold

protected void setCriticalThreshold(ilog.views.gantt.IlvDuration ilvduration)

Sets the critical threshold for the project

Parameters:

ilvduration -

clearCPMProperties

protected void clearCPMProperties()

Clear the CPM properties for all activities.

clearCPMProperties

protected void clearCPMProperties(IMXActivity[] selectedActivities)

Clear the CPM properties for selected activities.

computeSchedule

public boolean computeSchedule()
                        throws java.lang.Exception

Computed the critical path for the project

Specified by:

computeSchedule in interface ICriticalPathMethod

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

computeSchedule

public IMXActivity[] computeSchedule(IMXActivity[] selectedActivities)
                              throws java.lang.Exception

Computes the critical path for selected activities

Specified by:

computeSchedule in interface ICriticalPathMethod

Parameters:

selectedActivities -

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

computeEarlyStartAndFinish

protected void computeEarlyStartAndFinish(IMXActivity activity)
                                   throws java.lang.Exception

Forward pass to compute the early start and early finish

Parameters:

activity -

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

computeEarlyStartAndFinish

protected void computeEarlyStartAndFinish(IMXActivity activity,
                                          java.util.Date parentEarlyStart)
                                   throws java.lang.Exception

Forward pass to compute the early start and early finish

Parameters:

activity -

parentEarlyStart - that must be used if not null.

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

applyPredecessorConstraints

protected java.util.Date[] applyPredecessorConstraints(IMXActivity activity,
                                                       java.util.Date parentEarlyStart,
                                                       ilog.views.gantt.IlvDuration activityDuration)
                                                throws java.lang.Exception

Apply constraint type to the activity and get early and finish dates

Parameters:

activity -

parentEarlyStart -

activityDuration -

Returns:

early start and early finish date

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

computeLateStartAndFinish

protected void computeLateStartAndFinish(IMXActivity activity)
                                  throws java.lang.Exception

Backward pass to compute the late start and late finish

Parameters:

activity -

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

computeLateStartAndFinish

protected void computeLateStartAndFinish(IMXActivity activity,
                                         java.util.Date parentLatestFinish)
                                  throws java.lang.Exception

Backward pass to compute the late start and late finish

Parameters:

activity -

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

applySuccessorConstraints

protected java.util.Date[] applySuccessorConstraints(IMXActivity activity,
                                                     java.util.Date parentLatestFinish,
                                                     ilog.views.gantt.IlvDuration activityDuration)
                                              throws java.lang.Exception

Apply constraint type to the activity and get latest start and finish dates

Parameters:

activity -

parentLatestFinish -

activityDuration -

Returns:

early start and early finish date

Throws:

ilog.views.gantt.model.IlvConstraintCycleException

java.lang.Exception

computeFloat

protected void computeFloat(IMXActivity activity)
                     throws java.lang.Exception

Compute float for an activity

Parameters:

activity -

Throws:

java.lang.Exception

addDurationToDate

protected java.util.Date addDurationToDate(java.util.Date date,
                                           ilog.views.gantt.IlvDuration duration)

Returns a new Date that is the sum of the specified time and this duration

Parameters:

activity -

date -

duration -

Returns:

date

subtractDurationFromDate

protected java.util.Date subtractDurationFromDate(java.util.Date date,
                                                  ilog.views.gantt.IlvDuration duration)

Returns a new Date that is the subtraction of the specified time and this duration

Parameters:

activity -

date -

duration -

Returns:

date

getLeadLagDuration

protected ilog.views.gantt.IlvDuration getLeadLagDuration(java.lang.Double leadLagHours)

Get the lead/lag in IlvDuration

Parameters:

leadLagHours -

Returns:

IlvDuration

truncateDate

protected java.util.Date truncateDate(java.util.Date date)

Removes seconds and milliseconds from Activity dates, in order to avoid interference on float values calculations.

Parameters:

date -

Returns:

getActivityDuration

protected double getActivityDuration(IMXActivity activity)
                              throws java.lang.Exception

Throws:

java.lang.Exception

getTimeInterval

protected ilog.views.gantt.IlvTimeInterval getTimeInterval(IMXActivity activity,
                                                           boolean useEarlyDates)

getRootActivity

protected abstract IMXActivity getRootActivity()

activityAncestorsIterator

protected abstract java.util.Iterator activityAncestorsIterator(IMXActivity activity)

activityPreorderIterator

protected abstract java.util.Iterator activityPreorderIterator()

activityPreorderIterator

protected abstract java.util.Iterator activityPreorderIterator(IMXActivity activity)

childActivityIterator

protected abstract java.util.Iterator childActivityIterator(IMXActivity activity)

constraintIteratorFromActivity

protected abstract java.util.Iterator constraintIteratorFromActivity(IMXActivity activity)

constraintIteratorToActivity

protected abstract java.util.Iterator constraintIteratorToActivity(IMXActivity activity)

getChildActivityCount

protected abstract int getChildActivityCount(IMXActivity activity)

handleModifiedActivity

protected abstract void handleModifiedActivity(IMXActivity activity)

getActivityByID

protected abstract IMXActivity getActivityByID(java.lang.String activityID)

recalculateParentActivity

protected abstract boolean recalculateParentActivity(IMXActivity activity)