org.qtitools.qti.node.expression
Interface ExpressionParent

All Superinterfaces:

java.io.Serializable, Validatable, XmlNode, XmlObject

All Known Subinterfaces:

Expression

All Known Implementing Classes:

AbstractExpression, AbstractJump, And, AnyN, BaseValue, BranchRule, ContainerSize, Contains, Correct, CustomOperator, Default, Delete, Divide, DurationGte, DurationLt, Equal, EqualRounded, FieldValue, Gt, Gte, Index, Inside, IntegerDivide, IntegerModulus, IntegerToFloat, IsNull, ItemSubset, LookupExpression, LookupOutcomeValue, LookupOutcomeValue, Lt, Lte, MapResponse, MapResponsePoint, Match, Member, Multiple, Not, Null, NumberCorrect, NumberIncorrect, NumberPresented, NumberResponded, NumberSelected, Or, Ordered, OutcomeConditionExpressionChild, OutcomeElseIf, OutcomeIf, OutcomeMaximum, OutcomeMinimum, OutcomeMinMax, PatternMatch, Power, PreCondition, ProcessOutcomeValue, ProcessResponseValue, ProcessTemplateValue, Product, Random, RandomEx, RandomExpression, RandomFloat, RandomFloatEx, RandomInteger, RandomIntegerEx, RecordEx, ResponseConditionExpressionChild, ResponseElseIf, ResponseIf, Round, SetCorrectResponse, SetDefaultValue, SetOutcomeValue, SetOutcomeValue, SetTemplateValue, StringMatch, Substring, Subtract, Sum, TemplateConditionExpressionChild, TemplateDefault, TemplateElseIf, TemplateIf, TestVariables, Truncate, Variable

public interface ExpressionParent
extends XmlObject

Every object which contains expression(s) must implement this interface. Expression contains (in general case) other expressions, so it must implement this interface too.

Author:

Jiri Kajaba

Field Summary

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

INDENT, NEW_LINE, SIMPLE_NAME_INNER_SEPARATOR, SIMPLE_NAMES_SEPARATOR

Method Summary

BaseType[]	getRequiredBaseTypes(int index) Gets list of all acceptable baseTypes which can child expression at given position produce.
Cardinality[]	getRequiredCardinalities(int index) Gets list of all acceptable cardinalities which can child expression at given position produce.

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

getParent, getParentItem, getParentResult, getParentTest, setParent

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

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

Methods inherited from interface org.qtitools.qti.validation.Validatable

validate

Method Detail

getRequiredCardinalities

Cardinality[] getRequiredCardinalities(int index)

Gets list of all acceptable cardinalities which can child expression at given position produce.

For example delete expression returns single cardinality for index 0 and list of multiple and ordered cardinality for index 1.

Result of this method can change in time.

Static example is expression or. Expression or accepts only single cardinality for any index.

Dynamic example is expression match. Expression match accepts any cardinality of its children, but this cardinality must be same for all its children.

Parameters:

index - position of child expression in this parent

Returns:

list of all possible cardinalities which can child expression at given position produce

getRequiredBaseTypes

BaseType[] getRequiredBaseTypes(int index)

Gets list of all acceptable baseTypes which can child expression at given position produce.

Result of this method can change in time.

Static example is expression or. Expression or accepts only boolean baseType for any index.

Dynamic example is expression match. Expression match accepts any baseType of its children. but this baseType must be same for all its children.

Parameters:

index - position of child expression in this parent

Returns:

list of all acceptable baseTypes which can child expression at given position produce