CommandAssociate.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
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 * (C) Copyright 2009-2024, Arnaud Roques
 *
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package net.sourceforge.plantuml.cheneer.command;

import net.sourceforge.plantuml.abel.Entity;
import net.sourceforge.plantuml.abel.Link;
import net.sourceforge.plantuml.abel.LinkArg;
import net.sourceforge.plantuml.cheneer.ChenEerDiagram;
import net.sourceforge.plantuml.command.CommandExecutionResult;
import net.sourceforge.plantuml.command.SingleLineCommand2;
import net.sourceforge.plantuml.decoration.LinkDecor;
import net.sourceforge.plantuml.decoration.LinkType;
import net.sourceforge.plantuml.klimt.color.NoSuchColorException;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.plasma.Quark;
import net.sourceforge.plantuml.regex.IRegex;
import net.sourceforge.plantuml.regex.RegexConcat;
import net.sourceforge.plantuml.regex.RegexLeaf;
import net.sourceforge.plantuml.regex.RegexOptional;
import net.sourceforge.plantuml.regex.RegexResult;
import net.sourceforge.plantuml.utils.LineLocation;

public class CommandAssociate extends SingleLineCommand2<ChenEerDiagram> {

	public CommandAssociate() {
		super(getRegexConcat());
	}

	protected static IRegex getRegexConcat() {
		return RegexConcat.build(CommandCreateEntity.class.getName(), RegexLeaf.start(), //
				new RegexLeaf("NAME1", "([\\w-]+)"), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("PARTICIPATION", "([-=])"), //
				new RegexOptional( //
						new RegexLeaf("CARDINALITY", "(\\w+|\\(\\w+,[%s]*\\w+\\))")), //
				new RegexLeaf("PARTICIPATION2", "([-=])"), //
				RegexLeaf.spaceZeroOrMore(), //
				new RegexLeaf("NAME2", "([\\w-]+)"), //
				RegexLeaf.end());
	}

	@Override
	protected CommandExecutionResult executeArg(ChenEerDiagram diagram, LineLocation location, RegexResult arg)
			throws NoSuchColorException {
		final String name1 = diagram.cleanId(arg.get("NAME1", 0));
		final String name2 = diagram.cleanId(arg.get("NAME2", 0));
		final boolean isDouble = arg.get("PARTICIPATION", 0).equals("=");
		final String cardinality = arg.get("CARDINALITY", 0);

		final Quark<Entity> quark1 = diagram.quarkInContext(true, name1);
		final Entity entity1 = quark1.getData();
		if (entity1 == null) {
			return CommandExecutionResult.error("No such entity: " + name1);
		}

		final Quark<Entity> quark2 = diagram.quarkInContext(true, name2);
		final Entity entity2 = quark2.getData();
		if (entity2 == null) {
			return CommandExecutionResult.error("No such entity: " + name2);
		}

		LinkType linkType = new LinkType(LinkDecor.NONE, LinkDecor.NONE);
		if (isDouble) {
			linkType = linkType.goBold();
		}
		final Link link = new Link(diagram.getEntityFactory(), diagram.getCurrentStyleBuilder(), entity1, entity2,
				linkType,
				LinkArg.build(Display.getWithNewlines(cardinality), 3));
		link.setPortMembers(diagram.getPortId(entity1.getName()), diagram.getPortId(entity2.getName()));
		diagram.addLink(link);

		return CommandExecutionResult.ok();
	}

}