Package net.ssehub.easy.instantiation.core.model.buildlangModel

Class JoinVariableDeclaration

java.lang.Object

net.ssehub.easy.instantiation.core.model.common.VariableDeclaration

net.ssehub.easy.instantiation.core.model.buildlangModel.VariableDeclaration

net.ssehub.easy.instantiation.core.model.buildlangModel.JoinVariableDeclaration

All Implemented Interfaces:

IVariable, IBuildlangElement, IRuleElement, ILanguageElement, IModifierHolder, IResolvable, IMetaParameterDeclaration

public class JoinVariableDeclaration
extends VariableDeclaration

Defines a variable declaration for VIL joins.

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	exclude

Constructor Summary

Constructors

Constructor	Description
JoinVariableDeclaration(java.lang.String name, Expression expr, boolean exclude)	Creates a new variable declaration.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	accept(IVisitor visitor)	Accepts the visitor for visiting.
private static TypeDescriptor<?>	getJoinVariableType(Expression expr)	Determine the type of the join variable from the initializing expression.
boolean	isExcluded()	Returns whether this variable shall be excluded from the join result.

Methods inherited from class net.ssehub.easy.instantiation.core.model.buildlangModel.VariableDeclaration

getParent, setParent

Methods inherited from class net.ssehub.easy.instantiation.core.model.common.VariableDeclaration

accept, addModifier, getExpression, getModifier, getModifierCount, getName, getParameter, getRequiredParameterCount, getType, hasExplicitType, hasModifier, isConstant, isImplicit, mapDefaultedParameters, resolveOperation, setHasExplicitType, setIsConstant, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.ssehub.easy.instantiation.core.model.expressions.IResolvable

getName

Field Detail

exclude

private boolean exclude

Constructor Detail

JoinVariableDeclaration

public JoinVariableDeclaration(java.lang.String name,
                               Expression expr,
                               boolean exclude)
                        throws VilException

Creates a new variable declaration.

Parameters:

name - the name of the variable

expr - the initializing expression (must be given)

exclude - if this join variable shall be excluded from the join result

Throws:

VilException - in case of structural or semantic errors

Method Detail

getJoinVariableType

private static TypeDescriptor<?> getJoinVariableType(Expression expr)
                                              throws VilException

Determine the type of the join variable from the initializing expression.

Parameters:

expr - the expression used for the initialization

Returns:

the actual type of the join variable

Throws:

VilException - in case that expr is not a collection or does not have exactly one parameter

isExcluded

public boolean isExcluded()

Returns whether this variable shall be excluded from the join result.

Returns:

true if it shall be excluded, false else

accept

public java.lang.Object accept(IVisitor visitor)
                        throws VilException

Description copied from interface: IBuildlangElement

Accepts the visitor for visiting.

Specified by:

accept in interface IBuildlangElement

Overrides:

accept in class VariableDeclaration

Parameters:

visitor - the visitor to be used

Returns:

the result of visiting this instance (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)