Package uk.ac.ed.epcc.safe.accounting.expr

Classes to encode simple expressions over properties.

See: Description

Interface Summary

Interface	Description
DerivedPropertyFactory	A factory that defines a set of derived properties.
ExpressionTarget	A class that supports expressions over PropertyTags.
ExpressionTargetContainer
PropExpressionVisitor<R>	A visitor interface for PropExpressions.

Class Summary

Class	Description
BinaryPropExpression	Binary numerical operation on PropExpressions
CasePropExpression<T>	a PropExpression for a case statement where the expression generated is selected by a set of RecordSelectors.
CasePropExpression.Case<T>
ConstPropExpression<N>
ConvertMillisecondToDatePropExpression
DeRefExpression<R extends uk.ac.ed.epcc.webapp.model.data.DataObject & ExpressionTarget,T>
DerivedPropertyMap	A PropertyMap that can also define derived properties.
DoubleDeRefExpression<R extends uk.ac.ed.epcc.webapp.model.data.DataObject & ExpressionTarget,T extends uk.ac.ed.epcc.webapp.Indexed>	A de-reference expression that is itself a reference expression.
DoublePropExpression<T>	A cast to double expression.
DurationCastPropExpression<N extends java.lang.Number>	A cast a numerical expression to Duration.
DurationPropExpression
DurationSecondsPropExpression	Convert Duration valued PropExpression into seconds.
EvaluatePropExpressionVisitor	A PropExpressionVisitor that evaluates an expression.
ExpressionTuple	A class representing a set of PropExpressions and associated values.
ImplementationPropExpressionVisitor	Class that expands derived properties to generate an implementation string.
IntPropExpression<T>	A cast to integer expression.
LabelPropExpression<T,R>	A PropExpression that maps a nested expression to a String using a Labeller
MilliSecondDatePropExpression	PropExpression that converts a Date property to a millisecond value from the normal unix epoch.
NamePropExpression	A PropExpression that evaluates to the name of a referenced object.
NegatePropExpression	An expression that negates a numerical value.
Parser	Simple expression parser.
PropertyTagInput	input for selecting a PropertyTag from a PropertyFinder
PropertyTargetEvaluatePropExpressionVisitor	visitor to evaluate an expression on a simple PropertyTarget
PropExpressionInput	Input for propExpressions
PropExpressionMap	Class that holds a set of PropertyTag definitions in terms of PropExpressions.
PropExpressionNormaliser	A PropExpressionVisitor that re-writes a PropExpression to normalised form.
ResolveCheckVisitor	Visitor to check if an expression resolves This version does not check expressions on remote objects
SelectPropExpression<T>	An expression that selects a result from a list of expressions.
StringPropExpression<T>	A cast to to string expression.
TypeConverterPropExpression<T,D>	PropExpression that allows an arbitrary conversion.

Exception Summary

Exception	Description
ParseException
PropertyCastException	Exception thrown when the target type for a prop-expression is inappropriate for its context+
UnsupportedExpressionException	Exception thrown if an expression is unsupported

Package uk.ac.ed.epcc.safe.accounting.expr Description

Classes to encode simple expressions over properties. Though PropertyTag is itself an expression this package defines additional more complex expressions such as:

• Simple mathematical expressions over numerical properties
• Date to millisecond conversion
• Dereference expressions that access the properties of a referenced AccountingClassification