package org.apache.turbine.services.security.torque;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Turbine" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache Turbine", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
import java.beans.PropertyDescriptor;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.torque.TorqueException;
import org.apache.torque.om.Persistent;
import org.apache.torque.util.BasePeer;
import org.apache.torque.util.Criteria;
import org.apache.turbine.om.security.Group;
import org.apache.turbine.services.InitializationException;
import org.apache.turbine.services.security.TurbineSecurity;
import org.apache.turbine.util.security.DataBackendException;
import org.apache.turbine.util.security.GroupSet;
/**
* This class capsulates all direct Peer access for the Group entities.
* It allows the exchange of the default Turbine supplied TurbineGroupPeer
* class against a custom class.
*
* @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
* @version $Id: GroupPeerManager.java,v 1.4 2003/08/22 16:50:43 mpoeschl Exp $
*
*/
public class GroupPeerManager
implements GroupPeerManagerConstants
{
/** The class of the Peer the TorqueSecurityService uses */
private static Class groupPeerClass = null;
/** The class name of the objects returned by the configured peer. */
private static Class groupObject = null;
/** The name of the Table used for Group Object queries */
private static String tableName = null;
/** The name of the column used as "Name" Column */
private static String nameColumn = null;
/** The name of the column used as "Id" Column */
private static String idColumn = null;
/** The "Name" property descriptor */
private static PropertyDescriptor namePropDesc = null;
/** The "Id" property descriptor */
private static PropertyDescriptor idPropDesc = null;
/** Logging */
static Log log = LogFactory.getLog(GroupPeerManager.class);
/**
* Initializes the GroupPeerManager, loading the class object for the
* Peer used to retrieve Group objects
*
* @param conf The configuration object used to configure the Manager
*
* @exception InitializationException A problem occured during initialization
*/
public static void init(Configuration conf)
throws InitializationException
{
String groupPeerClassName = conf.getString(GROUP_PEER_CLASS_KEY,
GROUP_PEER_CLASS_DEFAULT);
String groupObjectName = null;
try
{
groupPeerClass = Class.forName(groupPeerClassName);
tableName = (String) groupPeerClass.getField("TABLE_NAME").get(null);
//
// We have either an user configured Object class or we use the default
// as supplied by the Peer class
//
groupObject = getPersistenceClass(); // Default from Peer, can be overridden
groupObjectName = conf.getString(GROUP_CLASS_KEY,
groupObject.getName());
groupObject = Class.forName(groupObjectName); // Maybe the user set a new value...
// If any of the following Field queries fails, the group subsystem
// is unusable. So check this right here at init time, which saves
// us much time and hassle if it fails...
nameColumn = (String) groupPeerClass.getField(conf
.getString(GROUP_NAME_COLUMN_KEY, GROUP_NAME_COLUMN_DEFAULT)
).get(null);
idColumn = (String) groupPeerClass.getField(conf
.getString(GROUP_ID_COLUMN_KEY, GROUP_ID_COLUMN_DEFAULT)
).get(null);
namePropDesc = new PropertyDescriptor(conf
.getString(GROUP_NAME_PROPERTY_KEY,
GROUP_NAME_PROPERTY_DEFAULT), groupObject);
idPropDesc = new PropertyDescriptor(conf
.getString(GROUP_ID_PROPERTY_KEY,
GROUP_ID_PROPERTY_DEFAULT), groupObject);
}
catch (Exception e)
{
if (groupPeerClassName == null || groupPeerClass == null)
{
throw new InitializationException(
"Could not find GroupPeer class ("
+ groupPeerClassName + ")", e);
}
if (tableName == null)
{
throw new InitializationException(
"Failed to get the table name from the Peer object", e);
}
if (groupObject == null || groupObjectName == null)
{
throw new InitializationException(
"Failed to get the object type from the Peer object", e);
}
if (nameColumn == null || namePropDesc == null)
{
throw new InitializationException(
"GroupPeer " + groupPeerClassName + " has no name column information!", e);
}
if (idColumn == null || idPropDesc == null)
{
throw new InitializationException(
"GroupPeer " + groupPeerClassName + " has no id column information!", e);
}
}
}
/**
* Get the name of this table.
*
* @return A String with the name of the table.
*/
public static String getTableName()
{
return tableName;
}
/**
* Returns the fully qualified name of the Column to
* use as the Name Column for a group
*
* @return A String containing the column name
*/
public static String getNameColumn()
{
return nameColumn;
}
/**
* Returns the fully qualified name of the Column to
* use as the Id Column for a group
*
* @return A String containing the column id
*/
public static String getIdColumn()
{
return idColumn;
}
/**
* Returns the full name of a column.
*
* @param name The column to fully qualify
*
* @return A String with the full name of the column.
*/
public static String getColumnName(String name)
{
StringBuffer sb = new StringBuffer();
sb.append(getTableName());
sb.append(".");
sb.append(name);
return sb.toString();
}
/**
* Returns a new, empty object for the underlying peer.
* Used to create a new underlying object
*
* @return A new object which is compatible to the Peer
* and can be used as a Group object
*
*/
public static Persistent newPersistentInstance()
{
Persistent obj = null;
if(groupObject == null)
{
// This can happen if the Turbine wants to determine the
// name of the anonymous user before the security service
// has been initialized. In this case, the Peer Manager
// has not yet been inited and the groupObject is still
// null. Return null in this case.
//
return obj;
}
try
{
obj = (Persistent) groupObject.newInstance();
}
catch (Exception e)
{
log.error("Could not instantiate a group object", e);
obj = null;
}
return obj;
}
/**
* Retrieves/assembles a GroupSet of all of the Groups.
*
* @return A set of all the Groups in the system
* @exception Exception A generic exception.
*/
public static GroupSet retrieveSet()
throws Exception
{
return retrieveSet(new Criteria());
}
/**
* Retrieves/assembles a GroupSet based on the Criteria passed in
*
* @param criteria A criteria containing a pre-assembled set of criterias
* for the GroupSet
*
* @return A Set of groups which fulfil the required criterias
*
* @exception Exception A generic exception
*
*/
public static GroupSet retrieveSet(Criteria criteria)
throws Exception
{
List results = doSelect(criteria);
GroupSet gs = new GroupSet();
for(Iterator it = results.iterator(); it.hasNext(); )
{
gs.add((Group) it.next());
}
return gs;
}
/**
* Checks if a Group is defined in the system. The name
* is used as query criteria.
*
* @param group The Group to be checked.
* @return <code>true</code> if given Group exists in the system.
* @throws DataBackendException when more than one Group with
* the same name exists.
* @throws Exception A generic exception.
*/
public static boolean checkExists(Group group)
throws DataBackendException, Exception
{
Criteria criteria = new Criteria();
criteria.addSelectColumn(getIdColumn());
criteria.add(getNameColumn(), group.getName());
List results = BasePeer.doSelect(criteria);
if (results.size() > 1)
{
throw new DataBackendException("Multiple groups named '" +
group.getName() + "' exist!");
}
return (results.size() == 1);
}
/*
* ========================================================================
*
* WARNING! Do not read on if you have a weak stomach. What follows here
* are some abominations thanks to the braindead static peers of Torque
* and the rigidity of Java....
*
* ========================================================================
*
*/
/**
* Calls buildCriteria(Group group) in the configured GroupPeer. If you get
* a ClassCastException in this routine, you put a Group object into this
* method which can't be cast into an object for the TorqueSecurityService. This is a
* configuration error most of the time.
*
* @param group An object which implements the Group interface
*
* @return A criteria for the supplied group object
*/
public static Criteria buildCriteria(Group group)
{
Criteria crit;
try
{
Class[] clazz = new Class[] { groupObject };
Object[] params =
new Object[] { ((TorqueGroup) group).getPersistentObj() };
crit = (Criteria) groupPeerClass
.getMethod("buildCriteria", clazz)
.invoke(null, params);
}
catch (Exception e)
{
crit = null;
}
return crit;
}
/**
* Invokes doUpdate(Criteria c) on the configured Peer Object
*
* @param criteria A Criteria Object
*
* @exception TorqueException A problem occured.
*/
public static void doUpdate(Criteria criteria)
throws TorqueException
{
try
{
Class[] clazz = new Class[] { Criteria.class };
Object[] params = new Object[] { criteria };
groupPeerClass
.getMethod("doUpdate", clazz)
.invoke(null, params);
}
catch (Exception e)
{
throw new TorqueException("doUpdate failed", e);
}
}
/**
* Invokes doInsert(Criteria c) on the configured Peer Object
*
* @param criteria A Criteria Object
*
* @exception TorqueException A problem occured.
*/
public static void doInsert(Criteria criteria)
throws TorqueException
{
try
{
Class[] clazz = new Class[] { Criteria.class };
Object[] params = new Object[] { criteria };
groupPeerClass
.getMethod("doInsert", clazz)
.invoke(null, params);
}
catch (Exception e)
{
throw new TorqueException("doInsert failed", e);
}
}
/**
* Invokes doSelect(Criteria c) on the configured Peer Object
*
* @param criteria A Criteria Object
*
* @return A List of Group Objects selected by the Criteria
*
* @exception TorqueException A problem occured.
*/
public static List doSelect(Criteria criteria)
throws TorqueException
{
List list;
try
{
Class[] clazz = new Class[] { Criteria.class };
Object[] params = new Object[] { criteria };
list = (List) groupPeerClass
.getMethod("doSelect", clazz)
.invoke(null, params);
}
catch (Exception e)
{
throw new TorqueException("doSelect failed", e);
}
List newList = new ArrayList(list.size());
//
// Wrap the returned Objects into the configured Peer Objects.
//
for (Iterator it = list.iterator(); it.hasNext(); )
{
Group dr = getNewGroup((Persistent) it.next());
newList.add(dr);
}
return newList;
}
/**
* Invokes doDelete(Criteria c) on the configured Peer Object
*
* @param criteria A Criteria Object
*
* @exception TorqueException A problem occured.
*/
public static void doDelete(Criteria criteria)
throws TorqueException
{
try
{
Class[] clazz =
new Class[] { Criteria.class };
Object[] params = new Object[] { criteria };
groupPeerClass
.getMethod("doDelete", clazz)
.invoke(null, params);
}
catch (Exception e)
{
throw new TorqueException("doDelete failed", e);
}
}
/**
* Invokes setName(String s) on the supplied base object
*
* @param obj The object to use for setting the name
*
* @param name The Name to set
*/
public static void setGroupName(Persistent obj, String name)
{
if(obj == null)
{
return;
}
try
{
Object[] params = new Object[] { name };
namePropDesc.getWriteMethod().invoke(obj, params);
}
catch (ClassCastException cce)
{
String msg = obj.getClass().getName() + " does not seem to be a Group Object!";
log.error(msg);
throw new RuntimeException(msg);
}
catch (Exception e)
{
log.error(e, e);
}
}
/**
* Invokes getName() on the supplied base object
*
* @param obj The object to use for getting the name
*
* @return A string containing the name
*/
public static String getGroupName(Persistent obj)
{
String name = null;
if(obj == null)
{
return null;
}
try
{
name = (String) namePropDesc
.getReadMethod()
.invoke(obj, new Object[] {});
}
catch (ClassCastException cce)
{
String msg = obj.getClass().getName() + " does not seem to be a Group Object!";
log.error(msg);
throw new RuntimeException(msg);
}
catch (Exception e)
{
log.error(e, e);
}
return name;
}
/**
* Invokes setId(int n) on the supplied base object
*
* @param obj The object to use for setting the name
* @param id The new Id
*/
public static void setId(Persistent obj, int id)
{
if(obj == null)
{
return;
}
try
{
Object[] params = new Object[] { Integer.TYPE };
idPropDesc.getWriteMethod().invoke(obj, params);
}
catch (ClassCastException cce)
{
String msg = obj.getClass().getName() + " does not seem to be a Group Object!";
log.error(msg);
throw new RuntimeException(msg);
}
catch (Exception e)
{
log.error(e, e);
}
}
/**
* Invokes getId() on the supplied base object
*
* @param obj The object to use for getting the id
*
* @return The Id of this object
*/
public static Integer getIdAsObj(Persistent obj)
{
Integer id = null;
if(obj == null)
{
return new Integer(0);
}
try
{
id = (Integer) idPropDesc
.getReadMethod()
.invoke(obj, new Object[] {});
}
catch (ClassCastException cce)
{
String msg = obj.getClass().getName() + " does not seem to be a Group Object!";
log.error(msg);
throw new RuntimeException(msg);
}
catch (Exception e)
{
log.error(e, e);
}
return id;
}
/**
* Returns the Class of the configured Object class
* from the peer
*
* @return The class of the objects returned by the configured peer
*
*/
private static Class getPersistenceClass()
{
Class persistenceClass = null;
try
{
Object[] params = new Object[0];
persistenceClass = (Class) groupPeerClass
.getMethod("getOMClass", null)
.invoke(null, params);
}
catch (Exception e)
{
persistenceClass = null;
}
return persistenceClass;
}
/**
* Returns a new, configured Group Object with
* a supplied Persistent object at its core
*
* @param p The persistent object
*
* @return a new, configured Group Object
*
* @exception Exception Could not create a new Object
*
*/
public static Group getNewGroup(Persistent p)
{
Group g = null;
try
{
Class groupWrapperClass = TurbineSecurity.getGroupClass();
Class [] clazz = new Class [] { Persistent.class };
Object [] params = new Object [] { p };
g = (Group) groupWrapperClass
.getConstructor(clazz)
.newInstance(params);
}
catch (Exception e)
{
log.error("Could not instantiate a new group from supplied persistent: ", e);
}
return g;
}
}