Source Code Cross Referenced for TaskConverter.java in  » Testing » jacareto » jacareto » convert » interactionmodel » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » jacareto » jacareto.convert.interactionmodel 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Jacareto Copyright (c) 2002-2005
003:         * Applied Computer Science Research Group, Darmstadt University of
004:         * Technology, Institute of Mathematics & Computer Science,
005:         * Ludwigsburg University of Education, and Computer Based
006:         * Learning Research Group, Aachen University. All rights reserved.
007:         *
008:         * Jacareto is free software; you can redistribute it and/or
009:         * modify it under the terms of the GNU General Public
010:         * License as published by the Free Software Foundation; either
011:         * version 2 of the License, or (at your option) any later version.
012:         *
013:         * Jacareto is distributed in the hope that it will be useful,
014:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
015:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
016:         * General Public License for more details.
017:         *
018:         * You should have received a copy of the GNU General Public
019:         * License along with Jacareto; if not, write to the Free
020:         * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
021:         *
022:         */
023:
024:        package jacareto.convert.interactionmodel;
025:
026:        import jacareto.convert.RecursiveInteractionModelConverter;
027:        import jacareto.convert.SelectionInteractionModelConverter;
028:        import jacareto.interactionmodel.InteractionModelElement;
029:        import jacareto.interactionmodel.TaskElement;
030:        import jacareto.system.Environment;
031:
032:        import org.jdom.Element;
033:
034:        import java.util.Iterator;
035:        import java.util.Vector;
036:
037:        /**
038:         * A converter which is able to convert task to xml representations, and vice versa.
039:         *
040:         * @author <a href="mailto:markus.bois@web.de">Markus Bois</a>
041:         * @version 1.02
042:         */
043:        public class TaskConverter extends RecursiveInteractionModelConverter {
044:            /**
045:             * Creates a new converter.
046:             *
047:             * @param env DOCUMENT ME!
048:             */
049:            public TaskConverter(Environment env) {
050:                super (env);
051:                setSelectionInteractionModelConverter(new SelectionInteractionModelConverter(
052:                        env, "InteractionModelElements.Converters",
053:                        SelectionInteractionModelConverter.INIT_CUSTOM));
054:            }
055:
056:            /**
057:             * Creates a new recursive converter
058:             *
059:             * @param env the enviroment
060:             * @param selectionInteractionModelConverter the available converters
061:             */
062:            public TaskConverter(
063:                    Environment env,
064:                    SelectionInteractionModelConverter selectionInteractionModelConverter) {
065:                super (env);
066:                setSelectionInteractionModelConverter(selectionInteractionModelConverter);
067:            }
068:
069:            /**
070:             * Returns whether this converter is able to transform the specified interaction-model element
071:             * to an internal structure representation. This converter is responsible for the given
072:             * interaction-model element if it is of type {@link jacareto.interactionmodel.TaskElement}.
073:             *
074:             * @param element the interaction-model element
075:             *
076:             * @return <code>true</code> if this converter is responsible for the given interaction-model
077:             *         element; otherwise <code>false</code>.
078:             */
079:            public boolean handlesElement(InteractionModelElement element) {
080:                return (element != null) && element instanceof  TaskElement;
081:            }
082:
083:            /**
084:             * Converts the specified object to a record object, if this converter is responsible for it.
085:             * For responsibility see {@link #handlesElement(InteractionModelElement)}.
086:             *
087:             * @param element the interaction-model element to convert
088:             *
089:             * @return the structure object (which is a xml element)
090:             */
091:            public Object convertElement(InteractionModelElement element) {
092:                TaskElement taskElement = (TaskElement) element;
093:                Iterator it = taskElement.children();
094:
095:                Element result = new Element("task");
096:                Element name = new Element("name");
097:
098:                name.setText(taskElement.getName());
099:                result.addContent(name);
100:
101:                while (it.hasNext()) {
102:                    InteractionModelElement next = (InteractionModelElement) it
103:                            .next();
104:
105:                    if ((next != null) && !(next instanceof  TaskElement)) {
106:                        if (selectionInteractionModelConverter
107:                                .handlesElement(next)) {
108:                            Object toAdd = selectionInteractionModelConverter
109:                                    .convertElement(next);
110:
111:                            if ((toAdd != null)
112:                                    && !(next instanceof  TaskElement)) {
113:                                result.addContent((Element) toAdd);
114:                            }
115:                        }
116:                    }
117:                }
118:
119:                return result;
120:            }
121:
122:            /**
123:             * Returns whether this converter is able to transform the specified other representation (here
124:             * a xml element) to a interaction-model element. This converter is responsible if the other
125:             * representation is of type <code>jdom.org.Element</code> and the name of the element is
126:             * &quot;task&quot;
127:             *
128:             * @param other the other representation
129:             *
130:             * @return <code>true</code> if this converter is responsible for the specified other
131:             *         representation; otherwise <code>false</code>.
132:             */
133:            public boolean handlesOther(Object other) {
134:                try {
135:                    Element e = (Element) other;
136:
137:                    return e.getName().equals("task");
138:                } catch (Throwable t) {
139:                    return false;
140:                }
141:            }
142:
143:            /**
144:             * Converts the specified other representation to a interaction-model element, if this
145:             * converter is responsible for it (reverses {@link
146:             * #convertElement(InteractionModelElement)}). For responsibility see {@link
147:             * #handlesOther(Object)}.
148:             *
149:             * @param other the other representation to convert
150:             *
151:             * @return the interaction-model element (of type {@link
152:             *         jacareto.interactionmodel.TaskElement})
153:             */
154:            public InteractionModelElement convertOther(Object other) {
155:                Element element = (Element) other;
156:                Vector children = new Vector();
157:                Element nameElement = element.getChild("name");
158:                String name = "";
159:                String id = element.getAttributeValue("id", "");
160:
161:                if (nameElement != null) {
162:                    name = nameElement.getText();
163:                }
164:
165:                Iterator iterator = element.getChildren("basic-step")
166:                        .iterator();
167:
168:                while (iterator.hasNext()) {
169:                    Object internalRepresentation = iterator.next();
170:
171:                    if (selectionInteractionModelConverter
172:                            .handlesOther(internalRepresentation)) {
173:                        InteractionModelElement toAdd = selectionInteractionModelConverter
174:                                .convertOther(internalRepresentation);
175:
176:                        if (toAdd != null) {
177:                            children.add(toAdd);
178:                        }
179:                    }
180:                }
181:
182:                return new TaskElement(env, name, InteractionModelElement
183:                        .vectorToArray(children), id);
184:            }
185:        }
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