org.qtitools.qti.node.expression.general
Class RandomIntegerEx

java.lang.Object
  org.qtitools.qti.node.AbstractNode
      org.qtitools.qti.node.AbstractObject
          org.qtitools.qti.node.expression.AbstractExpression
              org.qtitools.qti.node.expression.RandomExpression
                  org.qtitools.qti.node.expression.general.RandomInteger
                      org.qtitools.qti.node.expression.general.RandomIntegerEx

All Implemented Interfaces:

java.io.Serializable, Expression, ExpressionParent, XmlNode, XmlObject, Validatable

public class RandomIntegerEx
extends RandomInteger

Extends randomInteger expression - supports seed attribute.

This expression should be used only for special purposes when you need repeatability (not for real assessments).

Author:

Jiri Kajaba

See Also:

Serialized Form

Field Summary

static java.lang.Long	ATTR_SEED_DEFAULT_VALUE Default value of seed attribute.
static java.lang.String	ATTR_SEED_NAME Name of seed attribute in xml schema.
static java.lang.String	CLASS_TAG Name of this class in xml schema.

Fields inherited from class org.qtitools.qti.node.expression.general.RandomInteger

ATTR_MAXIMUM_NAME, ATTR_MINIMUM_NAME, ATTR_STEP_DEFAULT_VALUE, ATTR_STEP_NAME

Fields inherited from class org.qtitools.qti.node.expression.AbstractExpression

logger

Fields inherited from interface org.qtitools.qti.node.expression.Expression

DISPLAY_NAME

Fields inherited from interface org.qtitools.qti.node.XmlNode

INDENT, NEW_LINE, SIMPLE_NAME_INNER_SEPARATOR, SIMPLE_NAMES_SEPARATOR

Constructor Summary

RandomIntegerEx(ExpressionParent parent)
Constructs expression.

Method Summary

java.lang.String	getClassTag() Gets QTI class name of this node.
java.lang.Long	getSeedAttributeValue() Gets value of seed attribute.
boolean	isVariable() Returns true if value of evaluation can change every evaluation call; false otherwise.
void	setSeedAttributeValue(java.lang.Long seed) Sets new value of seed attribute.

Methods inherited from class org.qtitools.qti.node.expression.general.RandomInteger

evaluateSelf, getMaximum, getMinimum, getStep, setMaximum, setMinimum, setStep, validateAttributes

Methods inherited from class org.qtitools.qti.node.expression.RandomExpression

getRandomGenerator

Methods inherited from class org.qtitools.qti.node.expression.AbstractExpression

evaluate, getBaseType, getCardinality, getChildren, getFirstChild, getParent, getParentRequiredBaseTypes, getParentRequiredCardinalities, getProducedBaseTypes, getProducedCardinalities, getProducedNumericalBaseTypes, getRequiredBaseTypes, getRequiredCardinalities, getRequiredSameBaseTypes, getRequiredSameCardinalities, getSecondChild, getType, getValue, isAnyChildNull, isNull, reset, toString, validate

Methods inherited from class org.qtitools.qti.node.AbstractObject

getParentItem, getParentResult, getParentTest, setParent

Methods inherited from class org.qtitools.qti.node.AbstractNode

attrToXmlString, bodyToXmlString, getAttributes, getFullName, getIndent, getNode, getNode, getNode, getNodeGroups, getParentRoot, getSimpleName, getSourceFile, getSourceNode, getSourceString, getSourceUrl, hasChildNodes, load, load, load, load, loadAttributes, readChild, readChildren, setParent, setSourceFile, setSourceNode, setSourceString, setSourceUrl, toXmlString, toXmlString, validateChildren

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.qtitools.qti.node.XmlObject

getParentItem, getParentResult, getParentTest, setParent

Methods inherited from interface org.qtitools.qti.node.XmlNode

getAttributes, getFullName, getNodeGroups, getParentRoot, getSimpleName, getSourceFile, getSourceNode, getSourceString, getSourceUrl, hasChildNodes, load, load, load, load, setSourceFile, setSourceNode, setSourceString, setSourceUrl, toXmlString, toXmlString

Field Detail

CLASS_TAG

public static final java.lang.String CLASS_TAG

Name of this class in xml schema.

See Also:

Constant Field Values

ATTR_SEED_NAME

public static final java.lang.String ATTR_SEED_NAME

Name of seed attribute in xml schema.

See Also:

Constant Field Values

ATTR_SEED_DEFAULT_VALUE

public static final java.lang.Long ATTR_SEED_DEFAULT_VALUE

Default value of seed attribute.

Constructor Detail

RandomIntegerEx

public RandomIntegerEx(ExpressionParent parent)

Constructs expression.

Parameters:

parent - parent of this expression

Method Detail

getClassTag

public java.lang.String getClassTag()

Description copied from interface: XmlNode

Gets QTI class name of this node.

QTI class name has very important role during loading/saving nodes.

For example: Java class name is AssessmentTest; QTI class name is assessmentTest.

Specified by:

getClassTag in interface XmlNode

Overrides:

getClassTag in class RandomInteger

Returns:

QTI class name of this node

getSeedAttributeValue

public java.lang.Long getSeedAttributeValue()

Description copied from class: RandomExpression

Gets value of seed attribute.

Overrides:

getSeedAttributeValue in class RandomInteger

Returns:

value of seed attribute

setSeedAttributeValue

public void setSeedAttributeValue(java.lang.Long seed)

Sets new value of seed attribute.

Parameters:

seed - new value of seed attribute

See Also:

getSeedAttributeValue()

isVariable

public boolean isVariable()

Description copied from interface: Expression

Returns true if value of evaluation can change every evaluation call; false otherwise. It checks this expression and all of its children (if any child is variable, this expression becomes variable too). Example of variable expressions: variable and outcome expressions.

Specified by:

isVariable in interface Expression

Overrides:

isVariable in class RandomInteger

Returns:

true if value of evaluation can change every evaluation call; false otherwise