- extracted OpenXES to source folder

- added xstream as dependency
- made POM compatible with Java 8
- added license information

.classpath

@@ -1,16 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" output="bin/classes" path="src"/>
+	<classpathentry kind="src" output="bin/classes" path="ext"/>
 	<classpathentry kind="src" output="bin/test" path="test"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry combineaccessrules="false" kind="src" path="/TOVAL"/>
-	<classpathentry kind="lib" path="lib/openxes/OpenXES.jar" sourcepath="lib/openxes/xes_src.zip"/>
-	<classpathentry kind="lib" path="lib/openxes/guava-16.0.1.jar"/>
 	<classpathentry kind="lib" path="lib/collections-generic-4.01.jar"/>
 	<classpathentry kind="lib" path="lib/jung-algorithms-2.0.1.jar"/>
 	<classpathentry kind="lib" path="lib/jung-api-2.0.1.jar"/>
 	<classpathentry kind="lib" path="lib/jung-graph-impl-2.0.1.jar"/>
 	<classpathentry kind="lib" path="lib/jung-visualization-2.0.1.jar"/>
 	<classpathentry combineaccessrules="false" kind="src" path="/JAGAL"/>
-	<classpathentry kind="output" path="bin"/>
+	<classpathentry kind="lib" path="lib/xstream-1.4.8.jar"/>
+	<classpathentry kind="lib" path="lib/guava-16.0.1.jar"/>
+	<classpathentry kind="output" path="bin/classes"/>
 </classpath>

LICENSE.txt

@@ -0,0 +1,29 @@
+BSD License
+
+Copyright (c) 2013-2015, Thomas Stocker
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

build.xml

@@ -33,6 +33,7 @@
 
 	<!-- Source and destination directories -->
 	<property name="src.dir" value="${basedir}/src" />
+	<property name="ext.dir" value="${basedir}/ext" />
 	<property name="test.dir" value="${basedir}/test" />
 	<property name="target.dir" value="${basedir}/bin" />
 	<property name="target.dir.jar" value="${target.dir}/${artifact.name}-${version.name}" />
@@ -62,13 +63,13 @@
 		<pathelement location="${tests.target.dir}" />
 		<path refid="TOVAL.classpath" />
 		<path refid="JAGAL.classpath" />
-		<pathelement location="lib/openxes/OpenXES.jar" />
-		<pathelement location="lib/openxes/guava-16.0.1.jar" />
+		<pathelement location="lib/guava-16.0.1.jar" />
 		<pathelement location="lib/collections-generic-4.01.jar" />
 		<pathelement location="lib/jung-algorithms-2.0.1.jar" />
 		<pathelement location="lib/jung-api-2.0.1.jar" />
 		<pathelement location="lib/jung-graph-impl-2.0.1.jar" />
 		<pathelement location="lib/jung-visualization-2.0.1.jar" />
+		<pathelement location="lib/xstream-1.4.8.jar" />
 	</path>
 
 	<!-- Package JARs -->
@@ -84,6 +85,9 @@
 			<fileset dir="${src.dir}">
 				<include name="**/*.java" />
 			</fileset>
+			<fileset dir="${ext.dir}">
+				<include name="**/*.java" />
+			</fileset>
 			<fileset dir="${TOVAL.location}/src">
 				<include name="**/*.java" />
 			</fileset>
@@ -101,7 +105,11 @@
 				<attribute name="X-Date" value="${touch.time}" />
 			</manifest>
 		</jar>
-		<jar jarfile="${target.dir.jar}/${jar.sources.file.name}.jar" includes="**/*.java" basedir="${src.dir}">
+		<jar jarfile="${target.dir.jar}/${jar.sources.file.name}.jar">
+			<fileset dir="${src.dir}">
+				<include name="**/*.java" />
+			</fileset>
+			<fileset dir="${ext.dir}" />
 			<manifest>
 				<attribute name="X-Date" value="${touch.time}" />
 			</manifest>
@@ -131,20 +139,21 @@
 			<fileset dir="${classes.target.dir}" />
 			<fileset dir="${TOVAL.location}/bin/classes" />
 			<fileset dir="${JAGAL.location}/bin/classes" />
-			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/openxes/OpenXES.jar" />
-			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/openxes/guava-16.0.1.jar" />
+			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/guava-16.0.1.jar" />
 			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/collections-generic-4.01.jar" />
 			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/jung-algorithms-2.0.1.jar" />
 			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/jung-api-2.0.1.jar" />
 			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/jung-graph-impl-2.0.1.jar" />
 			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/jung-visualization-2.0.1.jar" />
+			<zipfileset excludes="META-INF/*.SF" src="${libs.dir}/xstream-1.4.8.jar" />
 		</jar>
 	</target>
 
 	<target name="compile" depends="init" description="Compiles the source and the test files">
 		<echo>Compile classes...</echo>
 		<javac destdir="${classes.target.dir}" includeantruntime="false">
 			<src path="${src.dir}" />
+			<src path="${ext.dir}" />
 			<classpath refid="SEWOL.classpath" />
 		</javac>
 		<echo>Compile tests...</echo>
@@ -175,6 +184,9 @@
 			<fileset dir="${src.dir}">
 				<exclude name="**/*.java" />
 			</fileset>
+			<fileset dir="${ext.dir}">
+				<exclude name="**/*.java" />
+			</fileset>
 		</copy>
 		<copy includeemptydirs="false" todir="${tests.target.dir}">
 			<fileset dir="${test.dir}">

ext/org/deckfour/spex/LICENSE.txt

@@ -0,0 +1,165 @@
+		   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions. 
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
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+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
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+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.

ext/org/deckfour/spex/SXCommentNode.java

@@ -0,0 +1,75 @@
+/*
+ * Spex
+ * 
+ * An efficient API and implementation for the serial processing
+ * and serialization of XML documents.
+ * 
+ * Copyright (c) 2009 Christian W. Guenther (christian@deckfour.org)
+ * 
+ * 
+ * LICENSE:
+ * 
+ * This code is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ * 
+ * EXEMPTION:
+ * 
+ * The use of this software can also be conditionally licensed for
+ * other programs, which do not satisfy the specified conditions. This
+ * requires an exemption from the general license, which may be
+ * granted on a per-case basis.
+ * 
+ * If you want to license the use of this software with a program
+ * incompatible with the LGPL, please contact the author for an
+ * exemption at the following email address: 
+ * christian@deckfour.org
+ * 
+ */
+package org.deckfour.spex;
+
+import java.io.IOException;
+import java.io.Writer;
+
+/**
+ * Wraps an XML comment within a syntactical node, to allow for correct
+ * code formatting / indentation and sufficiently complex document layouts.
+ * 
+ * @author Christian W. Guenther (christian@deckfour.org)
+ */
+public class SXCommentNode extends SXNode {
+
+	/**
+	 * Constructs a new comment node.
+	 * 
+	 * @param comment Comment string, <b>without</b> leading 
+	 * ("<code>&lt;!--</code>") and trailing ("<code>--&gt;</code>") 
+	 * XML-style comment delimiters!
+	 * @param aWriter output writer
+	 * @param aTabLevel indentation level
+	 * @param aTabString tabulator encoding
+	 */
+	public SXCommentNode(String comment, Writer aWriter, int aTabLevel, String aTabString) throws IOException {
+		super(aWriter, aTabLevel, aTabString);
+		indentLine();
+		writer.write("<!-- " + comment + " -->");
+	}
+
+	/* (non-Javadoc)
+	 * @see org.processmining.lib.xml.Node#close()
+	 */
+	public void close() throws IOException {
+		// ignore this event
+	}
+
+}