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SEWOL provides support for the handling of workflow traces. Specifically it allows to specify the shape and content of process traces in terms of entries representing the execution of a specific workflow activity. SEWOL also allows to write these traces on disk as a log file with the help of a special file writer for process logs. Currently it supports plain text, Petrify, MXML and XES log file types. In order to specify security-related context information, SEWOL provides access control models such as access control lists (ACL) and role-based access control models (RBAC). All types of models can be conveniently edited with the help of appropriate dialogs.
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/*
* OpenXES
*
* The reference implementation of the XES meta-model for event
* log data management.
*
* Copyright (c) 2008 Christian W. Guenther ([email protected])
*
*
* 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:
* [email protected]
*
*/
package org.deckfour.xes.model.impl;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.deckfour.xes.model.XAttribute;
import org.deckfour.xes.model.XAttributeMap;
/**
* Lazy implementation of the XAttributeMap interface.
*
* This implementation serves as a proxy for an XAttributeMapImpl instance,
* which is initially not present. Once the attribute map is to be filled
* with values, the true backing XAttributeMapImpl instance will be created
* on the fly, and used for storing and accessing data transparently.
*
* This lazy instantiation prevents lots of initializations of real
* attribute maps, since a large amount of attributes do not have
* any meta-attributes.
*
* This class is a generic, and can be parametrized with the actual
* implementation for the backing storage, which will then be instantiated
* on demand. Note that you will also have to pass the Class object of
* this implementation to the constructor, since this is required for
* instantiation (by Java).
*
* @author Christian W. Guenther ([email protected])
*
*/
public class XAttributeMapLazyImpl implements XAttributeMap {
/**
* Default empty entry set used for lazy operation.
*/
private static final Set> EMPTY_ENTRYSET
= Collections.unmodifiableSet(new HashSet>(0));
/**
* Default empty key set used for lazy operation.
*/
private static final Set EMPTY_KEYSET =
Collections.unmodifiableSet(new HashSet(0));
/**
* Default empty entries used for lazy operation.
*/
private static final Collection EMPTY_ENTRIES =
Collections.unmodifiableCollection(new ArrayList(0));
/**
* Class implementing the backing store; this is needed for initialization
* of generic classes, as of the Java language.
*/
private Class backingStoreClass;
/**
* Backing store, initialized lazily, i.e. on the fly.
*/
private T backingStore = null;
/**
* Creates a new lazy attribute map instance.
*
* @param implementingClass Class which should be used for
* instantiating the backing storage.
*/
public XAttributeMapLazyImpl(Class implementingClass) {
backingStoreClass = implementingClass;
backingStore = null;
}
/**
* Returns the class used for implementing the
* backing store.
*
* @return The class used for implementing the
* backing store.
*/
public Class getBackingStoreClass() {
return backingStoreClass;
}
/* (non-Javadoc)
* @see java.util.Map#clear()
*/
public synchronized void clear() {
backingStore = null;
}
/* (non-Javadoc)
* @see java.util.Map#containsKey(java.lang.Object)
*/
public synchronized boolean containsKey(Object key) {
if(backingStore != null) {
return backingStore.containsKey(key);
} else {
return false;
}
}
/* (non-Javadoc)
* @see java.util.Map#containsValue(java.lang.Object)
*/
public synchronized boolean containsValue(Object value) {
if(backingStore != null) {
return backingStore.containsValue(value);
} else {
return false;
}
}
/* (non-Javadoc)
* @see java.util.Map#entrySet()
*/
public synchronized Set> entrySet() {
if(backingStore != null) {
return backingStore.entrySet();
} else {
return EMPTY_ENTRYSET;
}
}
/* (non-Javadoc)
* @see java.util.Map#get(java.lang.Object)
*/
public synchronized XAttribute get(Object key) {
if(backingStore != null) {
return backingStore.get(key);
} else {
return null;
}
}
/* (non-Javadoc)
* @see java.util.Map#isEmpty()
*/
public synchronized boolean isEmpty() {
if(backingStore != null) {
return backingStore.isEmpty();
} else {
return true;
}
}
/* (non-Javadoc)
* @see java.util.Map#keySet()
*/
public synchronized Set keySet() {
if(backingStore != null) {
return backingStore.keySet();
} else {
return EMPTY_KEYSET;
}
}
/* (non-Javadoc)
* @see java.util.Map#put(java.lang.Object, java.lang.Object)
*/
public synchronized XAttribute put(String key, XAttribute value) {
if(backingStore == null) {
try {
backingStore = backingStoreClass.newInstance();
} catch (Exception e) {
// Fuckup
e.printStackTrace();
}
}
return backingStore.put(key, value);
}
/* (non-Javadoc)
* @see java.util.Map#putAll(java.util.Map)
*/
public synchronized void putAll(Map t) {
if(t.size() > 0) {
if(backingStore == null) {
try {
backingStore = backingStoreClass.newInstance();
} catch (Exception e) {
// Fuckup
e.printStackTrace();
}
}
backingStore.putAll(t);
}
}
/* (non-Javadoc)
* @see java.util.Map#remove(java.lang.Object)
*/
public synchronized XAttribute remove(Object key) {
if(backingStore != null) {
return backingStore.remove(key);
} else {
return null;
}
}
/* (non-Javadoc)
* @see java.util.Map#size()
*/
public synchronized int size() {
if(backingStore != null) {
return backingStore.size();
} else {
return 0;
}
}
/* (non-Javadoc)
* @see java.util.Map#values()
*/
public synchronized Collection values() {
if(backingStore != null) {
return backingStore.values();
} else {
return EMPTY_ENTRIES;
}
}
/**
* Creates a clone, i.e. deep copy, of this lazy attribute map.
*/
@SuppressWarnings("unchecked")
public Object clone() {
XAttributeMapLazyImpl clone;
try {
clone = (XAttributeMapLazyImpl)super.clone();
if(backingStore != null) {
clone.backingStore = (T)backingStore.clone();
}
return clone;
} catch (CloneNotSupportedException e) {
// Fuckup!
e.printStackTrace();
return null;
}
}
}