package net.sourceforge.fenixedu.domain.accessControl;

import java.util.Set;

import net.sourceforge.fenixedu.domain.Person;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.Argument;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.GroupBuilder;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.exceptions.GroupDynamicExpressionException;
import net.sourceforge.fenixedu.domain.accessControl.groups.language.operators.IdOperator;
import net.sourceforge.fenixedu.domain.organizationalStructure.Unit;

public class UnitMembersGroup extends DomainBackedGroup<Unit> {

    public UnitMembersGroup(Unit unit) {
	super(unit);
    }

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Override
    public Set<Person> getElements() {
	return (Set<Person>) getObject().getPossibleGroupMembers();
    }

    @Override
    protected Argument[] getExpressionArguments() {
	return new Argument[] { new IdOperator(getObject()) };
    }

    public static class Builder implements GroupBuilder {

	public Group build(Object[] arguments) {
	    try {
		return new UnitMembersGroup((Unit) arguments[0]);
	    } catch (ClassCastException e) {
		throw new GroupDynamicExpressionException("accessControl.group.builder.unitMembers.notUnit", arguments[0]
			.toString());
	    }
	}

	public int getMinArguments() {
	    return 1;
	}

	public int getMaxArguments() {
	    return 1;
	}

    }

}