org.qtitools.qti.node.test.flow
Class DefaultItemFlow

java.lang.Object
  org.qtitools.qti.node.test.flow.DefaultItemFlow

All Implemented Interfaces:

java.io.Serializable, ItemFlow

public class DefaultItemFlow
extends java.lang.Object
implements ItemFlow

Default implementation of item flow.

Author:

Jiri Kajaba

See Also:

Serialized Form

Field Summary

protected ItemRefNode	current
protected StartNode	start

Constructor Summary

DefaultItemFlow(AssessmentTest test)
Constructs item flow.

Method Summary

protected ItemRefNode	findPrevItemRef(boolean includeFinished)
AssessmentItemRef	getCurrentItemRef() Gets current item reference (can be null).
TestPart	getCurrentTestPart() Gets parent test part of current item reference (can be null).
AssessmentItemRef	getNextItemRef(boolean includeFinished) Gets first next item reference in test (can be null).
AssessmentItemRef	getPrevItemRef(boolean includeFinished) Gets first previous item reference in current test part (can be null).
AssessmentTest	getTest() Gets assessment test of this item flow.
boolean	hasNextItemRef(boolean includeFinished) Returns true if there is any next item reference in current test part; false otherwise.
boolean	hasPrevItemRef(boolean includeFinished) Returns true if there is any previous item reference in current test part; false otherwise.
boolean	isFinished() Returns true if there are no more item references to be presented; false otherwise.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

start

protected StartNode start

current

protected ItemRefNode current

Constructor Detail

DefaultItemFlow

public DefaultItemFlow(AssessmentTest test)

Constructs item flow.

Parameters:

test - assessment test

Method Detail

isFinished

public boolean isFinished()

Description copied from interface: ItemFlow

Returns true if there are no more item references to be presented; false otherwise.

Convenient method for getTest().isFinished().

Specified by:

isFinished in interface ItemFlow

Returns:

true if there are no more item references to be presented; false otherwise

getTest

public AssessmentTest getTest()

Description copied from interface: ItemFlow

Gets assessment test of this item flow.

Specified by:

getTest in interface ItemFlow

Returns:

assessment test of this item flow

getCurrentTestPart

public TestPart getCurrentTestPart()

Description copied from interface: ItemFlow

Gets parent test part of current item reference (can be null).

Result is null before test starts and after test finishes.

Specified by:

getCurrentTestPart in interface ItemFlow

Returns:

parent test part of current item reference (can be null)

getCurrentItemRef

public AssessmentItemRef getCurrentItemRef()

Description copied from interface: ItemFlow

Gets current item reference (can be null).

Result is null before test starts and after test finishes.

Specified by:

getCurrentItemRef in interface ItemFlow

Returns:

current item reference (can be null)

hasPrevItemRef

public boolean hasPrevItemRef(boolean includeFinished)

Description copied from interface: ItemFlow

Returns true if there is any previous item reference in current test part; false otherwise.

Previous item reference means any item reference which was presented before current item reference.

Returns false before test starts and after test finishes (current test part is null).

Specified by:

hasPrevItemRef in interface ItemFlow

Parameters:

includeFinished - whether consider already finished item references

Returns:

true if there is any previous item reference in current test part; false otherwise

getPrevItemRef

public AssessmentItemRef getPrevItemRef(boolean includeFinished)

Description copied from interface: ItemFlow

Gets first previous item reference in current test part (can be null).

First previous item reference means item reference with the highest lower presented time than current item reference. (First left item reference from current item reference on time axis.)

Specified by:

getPrevItemRef in interface ItemFlow

Parameters:

includeFinished - whether consider already finished item references

Returns:

first previous item reference in current test part (can be null)

findPrevItemRef

protected ItemRefNode findPrevItemRef(boolean includeFinished)

hasNextItemRef

public boolean hasNextItemRef(boolean includeFinished)

Description copied from interface: ItemFlow

Returns true if there is any next item reference in current test part; false otherwise.

Next item reference means any item reference which was (or will be) presented after current item reference.

Returns false before test starts and after test finishes (current test part is null).

In linear individual mode this method can be called only when current item is finished!

Specified by:

hasNextItemRef in interface ItemFlow

Parameters:

includeFinished - whether consider already finished item references

Returns:

true if there is any next item reference in current test part; false otherwise

getNextItemRef

public AssessmentItemRef getNextItemRef(boolean includeFinished)

Description copied from interface: ItemFlow

Gets first next item reference in test (can be null).

First next item reference means item reference with the lowest higher presented time than current item reference. (First right item reference from current item reference on time axis.)

This is the only one method which can cross boundary of current test part. Once boundary is crossed, there is no way how to go back!

In linear individual mode this method can be called only when current item is finished!

Specified by:

getNextItemRef in interface ItemFlow

Parameters:

includeFinished - whether consider already finished item references

Returns:

first next item reference in test (can be null)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object