mirror of https://github.com/octoleo/plantuml.git
580 lines
20 KiB
Java
580 lines
20 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2023, Arnaud Roques
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*
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* Project Info: http://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* http://plantuml.com/patreon (only 1$ per month!)
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* http://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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* Contribution : Hisashi Miyashita
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*
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*
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*/
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package net.sourceforge.plantuml.classdiagram.command;
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import net.sourceforge.plantuml.StringUtils;
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import net.sourceforge.plantuml.UmlDiagramType;
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import net.sourceforge.plantuml.Url;
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import net.sourceforge.plantuml.UrlBuilder;
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import net.sourceforge.plantuml.UrlMode;
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import net.sourceforge.plantuml.baraye.EntityImp;
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import net.sourceforge.plantuml.baraye.Quark;
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import net.sourceforge.plantuml.command.CommandExecutionResult;
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import net.sourceforge.plantuml.command.SingleLineCommand2;
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import net.sourceforge.plantuml.command.regex.RegexConcat;
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import net.sourceforge.plantuml.command.regex.RegexLeaf;
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import net.sourceforge.plantuml.command.regex.RegexOptional;
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import net.sourceforge.plantuml.command.regex.RegexOr;
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import net.sourceforge.plantuml.command.regex.RegexResult;
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import net.sourceforge.plantuml.cucadiagram.Display;
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import net.sourceforge.plantuml.cucadiagram.LeafType;
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import net.sourceforge.plantuml.cucadiagram.Link;
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import net.sourceforge.plantuml.cucadiagram.LinkArg;
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import net.sourceforge.plantuml.cucadiagram.LinkDecor;
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import net.sourceforge.plantuml.cucadiagram.LinkType;
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import net.sourceforge.plantuml.descdiagram.command.CommandLinkElement;
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import net.sourceforge.plantuml.descdiagram.command.Labels;
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import net.sourceforge.plantuml.graphic.color.ColorParser;
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import net.sourceforge.plantuml.graphic.color.ColorType;
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import net.sourceforge.plantuml.objectdiagram.AbstractClassOrObjectDiagram;
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import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
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import net.sourceforge.plantuml.utils.Direction;
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import net.sourceforge.plantuml.utils.LineLocation;
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final public class CommandLinkClass extends SingleLineCommand2<AbstractClassOrObjectDiagram> {
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private static final String SINGLE = "[.\\\\]{0,2}[%pLN_]+(?:[.\\\\]{1,2}[%pLN_]+)*";
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private static final String SINGLE_GUILLEMENT = "[%g][.\\\\]{0,2}[%pLN_]+(?:[.\\\\]{1,2}[%pLN_]+)*[%g]";
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private static final String SINGLE2 = "(?:" + SINGLE + "|" + SINGLE_GUILLEMENT + ")";
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private static final String COUPLE = "\\([%s]*(" + SINGLE2 + ")[%s]*,[%s]*(" + SINGLE2 + ")[%s]*\\)";
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public CommandLinkClass(UmlDiagramType umlDiagramType) {
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super(getRegexConcat(umlDiagramType));
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}
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static private RegexConcat getRegexConcat(UmlDiagramType umlDiagramType) {
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return RegexConcat.build(CommandLinkClass.class.getName() + umlDiagramType, RegexLeaf.start(), //
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new RegexOptional( //
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new RegexConcat( //
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new RegexLeaf("HEADER", "@([\\d.]+)"), //
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RegexLeaf.spaceOneOrMore() //
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)), new RegexOr( //
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new RegexLeaf("ENT1", getClassIdentifier()), //
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new RegexLeaf("COUPLE1", COUPLE)), //
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RegexLeaf.spaceZeroOrMore(), //
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new RegexOptional(new RegexConcat( //
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RegexLeaf.spaceOneOrMore(), //
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new RegexLeaf("[\\[]"), //
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new RegexLeaf("QUALIFIER1", "([^\\[\\]]+)"), //
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new RegexLeaf("[\\]]"), //
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RegexLeaf.spaceOneOrMore() //
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)), //
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new RegexOptional(new RegexLeaf("FIRST_LABEL", "[%g]([^%g]+)[%g]")), //
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RegexLeaf.spaceZeroOrMore(), //
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new RegexConcat(
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//
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new RegexLeaf("ARROW_HEAD1",
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"((?<=[%s])+[ox]|[)#\\[<*+^}]|\\<_|\\<\\|[\\:\\|]|[<\\[]\\||\\}o|\\}\\||\\|o|\\|\\|)?"), //
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new RegexLeaf("ARROW_BODY1", "([-=.]+)"), //
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new RegexLeaf("ARROW_STYLE1", "(?:\\[(" + CommandLinkElement.LINE_STYLE + ")\\])?"), //
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new RegexLeaf("ARROW_DIRECTION", "(left|right|up|down|le?|ri?|up?|do?)?"), //
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new RegexOptional(new RegexLeaf("INSIDE", "(0|\\(0\\)|\\(0|0\\))(?=[-=.~])")), //
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new RegexLeaf("ARROW_STYLE2", "(?:\\[(" + CommandLinkElement.LINE_STYLE + ")\\])?"), //
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new RegexLeaf("ARROW_BODY2", "([-=.]*)"), //
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new RegexLeaf("ARROW_HEAD2",
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"([ox][%s]+|:\\>\\>?|_\\>|[(#\\]>*+^\\{]|[\\|\\:]\\|\\>|\\|[>\\]]|o\\{|\\|\\{|o\\||\\|\\|)?")), //
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RegexLeaf.spaceZeroOrMore(), //
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new RegexOptional(new RegexLeaf("SECOND_LABEL", "[%g]([^%g]+)[%g]")), //
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new RegexOptional(new RegexConcat( //
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RegexLeaf.spaceOneOrMore(), //
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new RegexLeaf("[\\[]"), //
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new RegexLeaf("QUALIFIER2", "([^\\[\\]]+)"), //
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new RegexLeaf("[\\]]"), //
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RegexLeaf.spaceOneOrMore() //
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)), //
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RegexLeaf.spaceZeroOrMore(), //
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new RegexOr( //
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new RegexLeaf("ENT2", getClassIdentifier()), //
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new RegexLeaf("COUPLE2", COUPLE)), //
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RegexLeaf.spaceZeroOrMore(), //
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color().getRegex(), //
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RegexLeaf.spaceZeroOrMore(), //
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UrlBuilder.OPTIONAL, //
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RegexLeaf.spaceZeroOrMore(), //
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new RegexOptional( //
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new RegexConcat( //
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new RegexLeaf(":"), //
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RegexLeaf.spaceZeroOrMore(), //
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new RegexLeaf("LABEL_LINK", "(.+)") //
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)), RegexLeaf.end());
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}
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private static ColorParser color() {
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return ColorParser.simpleColor(ColorType.LINE);
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}
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private static String getClassIdentifier() {
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return "(" + getSeparator() + "?[%pLN_$]+(?:" + getSeparator() + "[%pLN_$]+)*|[%g][^%g]+[%g])";
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}
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public static String getSeparator() {
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return "(?:\\.|::|\\\\|\\\\\\\\)";
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}
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@Override
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protected CommandExecutionResult executeArg(AbstractClassOrObjectDiagram diagram, LineLocation location,
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RegexResult arg) throws NoSuchColorException {
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String ent1String = diagram.cleanIdForQuark(arg.get("ENT1", 0));
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String ent2String = diagram.cleanIdForQuark(arg.get("ENT2", 0));
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if (ent1String == null && ent2String == null)
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return executeArgSpecial3(diagram, arg);
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if (ent1String == null)
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return executeArgSpecial1(diagram, arg);
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if (ent2String == null)
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return executeArgSpecial2(diagram, arg);
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// if (isGroupButNotTheCurrentGroup(diagram, ent1String) && isGroupButNotTheCurrentGroup(diagram, ent2String)) {
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// return executePackageLink(diagram, arg);
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// }
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String port1 = null;
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String port2 = null;
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final LinkType linkType = getLinkType(arg);
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if (ent1String.contains("::") && diagram.getPlasma().getIfExistsFromName(ent1String) == null) {
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port1 = diagram.getPortId(ent1String);
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ent1String = diagram.removePortId(ent1String);
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}
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if (ent2String.contains("::") && diagram.getPlasma().getIfExistsFromName(ent2String) == null) {
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port2 = diagram.getPortId(ent2String);
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ent2String = diagram.removePortId(ent2String);
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}
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final Quark quark1 = diagram.quarkInContext(ent1String, false);
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final Quark quark2 = diagram.quarkInContext(ent2String, false);
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EntityImp cl1 = (EntityImp) quark1.getData();
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if (cl1 == null)
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cl1 = diagram.reallyCreateLeaf(quark1, Display.getWithNewlines(quark1.getName()), LeafType.CLASS, null);
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EntityImp cl2 = (EntityImp) quark2.getData();
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if (cl2 == null)
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cl2 = diagram.reallyCreateLeaf(quark2, Display.getWithNewlines(quark2.getName()), LeafType.CLASS, null);
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final Direction dir = getDirection(arg);
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final int queue;
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if (dir == Direction.LEFT || dir == Direction.RIGHT)
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queue = 1;
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else
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queue = getQueueLength(arg);
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final Labels labels = new Labels(arg);
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final String kal1 = arg.get("QUALIFIER1", 0);
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final String kal2 = arg.get("QUALIFIER2", 0);
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final LinkArg linkArg = LinkArg
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.build(labels.getDisplay(), queue, diagram.getSkinParam().classAttributeIconSize() > 0)
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.withQuantifier(labels.getFirstLabel(), labels.getSecondLabel())
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.withDistanceAngle(diagram.getLabeldistance(), diagram.getLabelangle()).withKal(kal1, kal2);
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Link link = new Link(diagram.getEntityFactory(), diagram.getSkinParam().getCurrentStyleBuilder(), cl1, cl2,
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linkType, linkArg);
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if (arg.get("URL", 0) != null) {
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final UrlBuilder urlBuilder = new UrlBuilder(diagram.getSkinParam().getValue("topurl"), UrlMode.STRICT);
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final Url url = urlBuilder.getUrl(arg.get("URL", 0));
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link.setUrl(url);
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}
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link.setPortMembers(port1, port2);
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if (dir == Direction.LEFT || dir == Direction.UP)
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link = link.getInv();
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link.setLinkArrow(labels.getLinkArrow());
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link.setColors(color().getColor(arg, diagram.getSkinParam().getIHtmlColorSet()));
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link.applyStyle(arg.getLazzy("ARROW_STYLE", 0));
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link.setCodeLine(location);
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addLink(diagram, link, arg.get("HEADER", 0));
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return CommandExecutionResult.ok();
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}
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// private boolean isGroupButNotTheCurrentGroup(AbstractClassOrObjectDiagram diagram, String code) {
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// if (diagram.getCurrentGroup().getCodeGetName().equals(code))
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// return false;
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//
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// return diagram.isGroup(code);
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// }
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private void addLink(AbstractClassOrObjectDiagram diagram, Link link, String weight) {
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diagram.addLink(link);
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if (weight == null) {
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// final LinkType type = link.getType();
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// --|> highest
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// --*, -->, --o normal
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// ..*, ..>, ..o lowest
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// if (type.isDashed() == false) {
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// if (type.contains(LinkDecor.EXTENDS)) {
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// link.setWeight(3);
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// }
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// if (type.contains(LinkDecor.ARROW) ||
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// type.contains(LinkDecor.COMPOSITION)
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// || type.contains(LinkDecor.AGREGATION)) {
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// link.setWeight(2);
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// }
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// }
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} else {
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link.setWeight(Double.parseDouble(weight));
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}
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}
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private CommandExecutionResult executePackageLink(AbstractClassOrObjectDiagram diagram, RegexResult arg)
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throws NoSuchColorException {
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final String ent1String = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("ENT1", 0), "\"");
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final String ent2String = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("ENT2", 0), "\"");
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final EntityImp cl1 = diagram.getGroup(ent1String);
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final EntityImp cl2 = diagram.getGroup(ent2String);
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final LinkType linkType = getLinkType(arg);
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final Direction dir = getDirection(arg);
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final int queue;
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if (dir == Direction.LEFT || dir == Direction.RIGHT)
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queue = 1;
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else
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queue = getQueueLength(arg);
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final Display labelLink = Display.getWithNewlines(arg.get("LABEL_LINK", 0));
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final String firstLabel = arg.get("FIRST_LABEL", 0);
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final String secondLabel = arg.get("SECOND_LABEL", 0);
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final LinkArg linkArg = LinkArg.build(labelLink, queue, diagram.getSkinParam().classAttributeIconSize() > 0);
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final Link link = new Link(diagram.getEntityFactory(), diagram.getSkinParam().getCurrentStyleBuilder(), cl1,
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cl2, linkType, linkArg.withQuantifier(firstLabel, secondLabel)
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.withDistanceAngle(diagram.getLabeldistance(), diagram.getLabelangle()));
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link.setColors(color().getColor(arg, diagram.getSkinParam().getIHtmlColorSet()));
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diagram.resetPragmaLabel();
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link.applyStyle(arg.getLazzy("ARROW_STYLE", 0));
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addLink(diagram, link, arg.get("HEADER", 0));
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return CommandExecutionResult.ok();
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}
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private CommandExecutionResult executeArgSpecial1(AbstractClassOrObjectDiagram diagram, RegexResult arg) {
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final String name1A = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE1", 0));
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final String name1B = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE1", 1));
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Quark quark1A = diagram.quarkInContext(name1A, false);
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Quark quark1B = diagram.quarkInContext(name1B, false);
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if (quark1A.getData() != null == false)
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return CommandExecutionResult.error("No class " + name1A);
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if (quark1B.getData() != null == false)
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return CommandExecutionResult.error("No class " + name1B);
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EntityImp cl1A = (EntityImp) quark1A.getData();
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EntityImp cl1B = (EntityImp) quark1B.getData();
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final String id2 = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("ENT2", 0), "\"");
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final Quark ent2 = diagram.quarkInContext(id2, false);
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EntityImp cl2 = (EntityImp) ent2.getData();
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if (cl2 == null)
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cl2 = diagram.reallyCreateLeaf(ent2, Display.getWithNewlines(ent2.getName()), LeafType.CLASS, null);
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final LinkType linkType = getLinkType(arg);
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final Display label = Display.getWithNewlines(arg.get("LABEL_LINK", 0));
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final boolean result = diagram.associationClass(1, cl1A, cl1B, cl2, linkType, label);
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if (result == false)
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return CommandExecutionResult.error("Cannot have more than 2 assocications");
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return CommandExecutionResult.ok();
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}
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private CommandExecutionResult executeArgSpecial2(AbstractClassOrObjectDiagram diagram, RegexResult arg) {
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final String name2A = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE2", 0));
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final String name2B = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE2", 1));
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final Quark quark2A = diagram.quarkInContext(name2A, false);
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final Quark quark2B = diagram.quarkInContext(name2B, false);
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if (quark2A.getData() != null == false)
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return CommandExecutionResult.error("No class " + name2A);
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if (quark2B.getData() != null == false)
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return CommandExecutionResult.error("No class " + name2B);
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final EntityImp cl2A = (EntityImp) quark2A.getData();
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final EntityImp cl2B = (EntityImp) quark2B.getData();
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final String id1 = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("ENT1", 0), "\"");
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final Quark ent1 = diagram.quarkInContext(id1, false);
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EntityImp cl1 = (EntityImp) ent1.getData();
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if (cl1 == null)
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cl1 = diagram.reallyCreateLeaf(ent1, Display.getWithNewlines(ent1.getName()), LeafType.CLASS, null);
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final LinkType linkType = getLinkType(arg);
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final Display label = Display.getWithNewlines(arg.get("LABEL_LINK", 0));
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final boolean result = diagram.associationClass(2, cl2A, cl2B, cl1, linkType, label);
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if (result == false)
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return CommandExecutionResult.error("Cannot have more than 2 assocications");
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return CommandExecutionResult.ok();
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}
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private CommandExecutionResult executeArgSpecial3(AbstractClassOrObjectDiagram diagram, RegexResult arg) {
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final String name1A = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE1", 0));
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final String name1B = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE1", 1));
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final String name2A = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE2", 0));
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final String name2B = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(arg.get("COUPLE2", 1));
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final Quark quark1A = diagram.quarkInContext(name1A, false);
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final Quark quark1B = diagram.quarkInContext(name1B, false);
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final Quark quark2A = diagram.quarkInContext(name2A, false);
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final Quark quark2B = diagram.quarkInContext(name2B, false);
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if (quark1A.getData() != null == false)
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return CommandExecutionResult.error("No class " + name1A);
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if (quark1B.getData() != null == false)
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return CommandExecutionResult.error("No class " + name1B);
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if (quark2A.getData() != null == false)
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return CommandExecutionResult.error("No class " + name2A);
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if (quark2B.getData() != null == false)
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return CommandExecutionResult.error("No class " + name2B);
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final EntityImp cl1A = (EntityImp) quark1A.getData();
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final EntityImp cl1B = (EntityImp) quark1B.getData();
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final EntityImp cl2A = (EntityImp) quark2A.getData();
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final EntityImp cl2B = (EntityImp) quark2B.getData();
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final LinkType linkType = getLinkType(arg);
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final Display label = Display.getWithNewlines(arg.get("LABEL_LINK", 0));
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return diagram.associationClass(cl1A, cl1B, cl2A, cl2B, linkType, label);
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}
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private LinkDecor getDecors1(String s) {
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if (s == null)
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return LinkDecor.NONE;
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s = StringUtils.trin(s);
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if ("<|".equals(s))
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return LinkDecor.EXTENDS;
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if ("<|:".equals(s))
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return LinkDecor.DEFINEDBY;
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if ("<||".equals(s))
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return LinkDecor.REDEFINES;
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if ("}".equals(s))
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return LinkDecor.CROWFOOT;
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if ("}o".equals(s))
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return LinkDecor.CIRCLE_CROWFOOT;
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if ("}|".equals(s))
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return LinkDecor.LINE_CROWFOOT;
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if ("|o".equals(s))
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return LinkDecor.CIRCLE_LINE;
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if ("||".equals(s))
|
|
return LinkDecor.DOUBLE_LINE;
|
|
|
|
if ("<".equals(s))
|
|
return LinkDecor.ARROW;
|
|
|
|
if ("^".equals(s))
|
|
return LinkDecor.EXTENDS;
|
|
|
|
if ("+".equals(s))
|
|
return LinkDecor.PLUS;
|
|
|
|
if ("o".equals(s))
|
|
return LinkDecor.AGREGATION;
|
|
|
|
if ("x".equals(s))
|
|
return LinkDecor.NOT_NAVIGABLE;
|
|
|
|
if ("*".equals(s))
|
|
return LinkDecor.COMPOSITION;
|
|
|
|
if ("#".equals(s))
|
|
return LinkDecor.SQUARE;
|
|
|
|
if (")".equals(s))
|
|
return LinkDecor.PARENTHESIS;
|
|
|
|
return LinkDecor.NONE;
|
|
}
|
|
|
|
private LinkDecor getDecors2(String s) {
|
|
if (s == null)
|
|
return LinkDecor.NONE;
|
|
|
|
s = StringUtils.trin(s);
|
|
if ("|>".equals(s))
|
|
return LinkDecor.EXTENDS;
|
|
|
|
if (":|>".equals(s))
|
|
return LinkDecor.DEFINEDBY;
|
|
|
|
if ("||>".equals(s))
|
|
return LinkDecor.REDEFINES;
|
|
|
|
if (">".equals(s))
|
|
return LinkDecor.ARROW;
|
|
|
|
if ("{".equals(s))
|
|
return LinkDecor.CROWFOOT;
|
|
|
|
if ("o{".equals(s))
|
|
return LinkDecor.CIRCLE_CROWFOOT;
|
|
|
|
if ("|{".equals(s))
|
|
return LinkDecor.LINE_CROWFOOT;
|
|
|
|
if ("o|".equals(s))
|
|
return LinkDecor.CIRCLE_LINE;
|
|
|
|
if ("||".equals(s))
|
|
return LinkDecor.DOUBLE_LINE;
|
|
|
|
if ("^".equals(s))
|
|
return LinkDecor.EXTENDS;
|
|
|
|
if ("+".equals(s))
|
|
return LinkDecor.PLUS;
|
|
|
|
if ("o".equals(s))
|
|
return LinkDecor.AGREGATION;
|
|
|
|
if ("x".equals(s))
|
|
return LinkDecor.NOT_NAVIGABLE;
|
|
|
|
if ("*".equals(s))
|
|
return LinkDecor.COMPOSITION;
|
|
|
|
if ("#".equals(s))
|
|
return LinkDecor.SQUARE;
|
|
|
|
if ("(".equals(s))
|
|
return LinkDecor.PARENTHESIS;
|
|
|
|
return LinkDecor.NONE;
|
|
}
|
|
|
|
private LinkType getLinkType(RegexResult arg) {
|
|
final LinkDecor decors1 = getDecors1(getArrowHead1(arg));
|
|
final LinkDecor decors2 = getDecors2(getArrowHead2(arg));
|
|
|
|
LinkType result = new LinkType(decors2, decors1);
|
|
if (arg.get("ARROW_BODY1", 0).contains(".") || arg.get("ARROW_BODY2", 0).contains("."))
|
|
result = result.goDashed();
|
|
|
|
final String middle = arg.get("INSIDE", 0);
|
|
if ("0".equals(middle))
|
|
result = result.withMiddleCircle();
|
|
else if ("0)".equals(middle))
|
|
result = result.withMiddleCircleCircled1();
|
|
else if ("(0".equals(middle))
|
|
result = result.withMiddleCircleCircled2();
|
|
else if ("(0)".equals(middle))
|
|
result = result.withMiddleCircleCircled();
|
|
|
|
return result;
|
|
}
|
|
|
|
private int getQueueLength(RegexResult arg) {
|
|
String s = getFullArrow(arg);
|
|
s = s.replaceAll("[^-.=]", "");
|
|
return s.length();
|
|
}
|
|
|
|
private Direction getDirection(RegexResult arg) {
|
|
// final LinkDecor decors1 = getDecors1(getArrowHead1(arg));
|
|
// final LinkDecor decors2 = getDecors2(getArrowHead2(arg));
|
|
|
|
String s = getFullArrow(arg);
|
|
s = s.replaceAll("[^-.=\\w]", "");
|
|
if (s.startsWith("o"))
|
|
s = s.substring(1);
|
|
|
|
if (s.endsWith("o"))
|
|
s = s.substring(0, s.length() - 1);
|
|
|
|
Direction result = StringUtils.getQueueDirection(s);
|
|
// if (isInversed(decors1, decors2) && s.matches(".*\\w.*")) {
|
|
// result = result.getInv();
|
|
// }
|
|
|
|
return result;
|
|
}
|
|
|
|
private String getArrowHead1(RegexResult arg) {
|
|
return getArrowHead(arg, "ARROW_HEAD1");
|
|
}
|
|
|
|
private String getArrowHead2(RegexResult arg) {
|
|
return getArrowHead(arg, "ARROW_HEAD2");
|
|
}
|
|
|
|
private String getArrowHead(RegexResult arg, final String key) {
|
|
return notNull(arg.get(key, 0));
|
|
}
|
|
|
|
private String getFullArrow(RegexResult arg) {
|
|
return getArrowHead1(arg) + notNull(arg.get("ARROW_BODY1", 0)) + notNull(arg.get("ARROW_DIRECTION", 0))
|
|
+ notNull(arg.get("ARROW_BODY2", 0)) + getArrowHead2(arg);
|
|
}
|
|
|
|
public static String notNull(String s) {
|
|
if (s == null)
|
|
return "";
|
|
return s;
|
|
}
|
|
|
|
}
|