Package eu.europa.ted.efx.model

Class Expression

java.lang.Object

eu.europa.ted.efx.model.CallStackObjectBase

eu.europa.ted.efx.model.Expression

Direct Known Subclasses:

Expression.BooleanExpression, Expression.ContextExpression, Expression.DateExpression, Expression.DurationExpression, Expression.IteratorExpression, Expression.ListExpressionBase, Expression.NumericExpression, Expression.PathExpression, Expression.StringExpression, Expression.TimeExpression

public class Expression
extends CallStackObjectBase

This class represents an expression in the target scripting language. The class is used to restrict the parameter types and return types of the methods that the EFX translator calls. This makes it easier for users to understand the nature and usage of each parameter when implementing ScriptGenerator, MarkupGenerator and SymbolResolver interfaces for translating to a new target language. It also enables to EFX translator to perform type checking of EFX expressions.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Expression.BooleanExpression	Represents a boolean expression, value or literal in the target language.
static class	Expression.BooleanListExpression	Used to represent a list of booleans in the target language.
static class	Expression.ContextExpression
static class	Expression.DateExpression	Represents a date expression or value in the target language.
static class	Expression.DateListExpression	Used to represent a list of dates in the target language.
static class	Expression.DurationExpression	Represents a duration expression, value or literal in the target language.
static class	Expression.DurationListExpression	Used to represent a list of durations in the target language.
static class	Expression.IteratorExpression	Used to represent iterators (for traversing a list using a variable)
static class	Expression.IteratorListExpression	Used to represent a collection of Expression.IteratorExpression.
static class	Expression.ListExpression<T extends Expression>	Used to represent a list of strings in the target language.
static class	Expression.ListExpressionBase
static class	Expression.NumericExpression	Represents a numeric expression, value or literal in the target language.
static class	Expression.NumericListExpression	Used to represent a list of numbers in the target language.
static class	Expression.PathExpression	An PathExpression points to a node in your data set.
static class	Expression.StringExpression	Represents a string expression, value or literal in the target language.
static class	Expression.StringListExpression	Used to represent a list of strings in the target language.
static class	Expression.TimeExpression	Represents a time expression, value or literal in the target language.
static class	Expression.TimeListExpression	Used to represent a list of times in the target language.

Field Summary

Fields

Modifier and Type	Field	Description
static Map<String,Class<? extends Expression>>	listTypes	ListExpression types equivalent to eForms types.
String	script	Stores the expression represented in the target language.
static Map<String,Class<? extends Expression>>	types	eForms types are mapped to Expression types.

Constructor Summary

Constructors

Constructor	Description
Expression(String script)

Method Summary

Modifier and Type	Method	Description
static <T extends Expression> T	empty(Class<T> type)
boolean	equals(Object obj)
static <T extends Expression> T	instantiate(String script, Class<T> type)

Methods inherited from class java.lang.Object

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

Field Detail

types

public static final Map<String,Class<? extends Expression>> types

eForms types are mapped to Expression types.

listTypes

public static final Map<String,Class<? extends Expression>> listTypes

ListExpression types equivalent to eForms types.

script

public final String script

Stores the expression represented in the target language.

Constructor Detail

Expression

public Expression(String script)

Method Detail

instantiate

public static <T extends Expression> T instantiate(String script,
                                                   Class<T> type)

empty

public static <T extends Expression> T empty(Class<T> type)

equals

public boolean equals(Object obj)

Overrides:

equals in class Object