package org.apache.turbine.services.security.torque;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
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.turbine.om.security.Group;
import org.apache.turbine.om.security.Role;
import org.apache.turbine.om.security.User;
import org.apache.turbine.services.InitializationException;
import org.apache.turbine.services.security.TurbineSecurity;
import org.apache.turbine.services.security.torque.om.TurbineUserGroupRolePeer;
import org.apache.turbine.util.security.DataBackendException;
import org.apache.turbine.util.security.RoleSet;
import org.apache.torque.TorqueException;
import org.apache.torque.om.Persistent;
import org.apache.torque.util.BasePeer;
import org.apache.torque.util.Criteria;
/**
* This class capsulates all direct Peer access for the Role entities.
* It allows the exchange of the default Turbine supplied TurbineRolePeer
* class against a custom class
*
* @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
* @version $Id: RolePeerManager.java 1096130 2011-04-23 10:37:19Z ludwig $
*/
public class RolePeerManager
implements RolePeerManagerConstants
{
/** The class of the Peer the TorqueSecurityService uses */
private static Class rolePeerClass = null;
/** The class name of the objects returned by the configured peer. */
private static Class roleObject = null;
/** The name of the Table used for Role 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(RolePeerManager.class);
/**
* Initializes the RolePeerManager, loading the class object for the
* Peer used to retrieve Role 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 rolePeerClassName = conf.getString(ROLE_PEER_CLASS_KEY,
ROLE_PEER_CLASS_DEFAULT);
String roleObjectName = null;
try
{
rolePeerClass = Class.forName(rolePeerClassName);
tableName =
(String) rolePeerClass.getField("TABLE_NAME").get(null);
//
// We have either an user configured Object class or we use the
// default as supplied by the Peer class
//
// Default from Peer, can be overridden
roleObject = getPersistenceClass();
roleObjectName = conf.getString(ROLE_CLASS_KEY,
roleObject.getName());
// Maybe the user set a new value...
roleObject = Class.forName(roleObjectName);
/* If any of the following Field queries fails, the role
* subsystem is unusable. So check this right here at init time,
* which saves us much time and hassle if it fails...
*/
nameColumn = (String) rolePeerClass.getField(
conf.getString(ROLE_NAME_COLUMN_KEY,
ROLE_NAME_COLUMN_DEFAULT)
).get(null);
idColumn = (String) rolePeerClass.getField(
conf.getString(ROLE_ID_COLUMN_KEY,
ROLE_ID_COLUMN_DEFAULT)
).get(null);
namePropDesc = new PropertyDescriptor(
conf.getString(ROLE_NAME_PROPERTY_KEY,
ROLE_NAME_PROPERTY_DEFAULT),
roleObject);
idPropDesc = new PropertyDescriptor(
conf.getString(ROLE_ID_PROPERTY_KEY,
ROLE_ID_PROPERTY_DEFAULT),
roleObject);
}
catch (Exception e)
{
if (rolePeerClassName == null || rolePeerClass == null)
{
throw new InitializationException(
"Could not find RolePeer class ("
+ rolePeerClassName + ")", e);
}
if (tableName == null)
{
throw new InitializationException(
"Failed to get the table name from the Peer object", e);
}
if (roleObject == null || roleObjectName == null)
{
throw new InitializationException(
"Failed to get the object type from the Peer object", e);
}
if (nameColumn == null || namePropDesc == null)
{
throw new InitializationException(
"RolePeer " + rolePeerClassName
+ " has no name column information!", e);
}
if (idColumn == null || idPropDesc == null)
{
throw new InitializationException(
"RolePeer " + rolePeerClassName
+ " 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 role
*
* @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 role
*
* @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 User object
*
*/
public static Persistent newPersistentInstance()
{
Persistent obj = null;
if (roleObject == 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 roleObject is still
// null. Return null in this case.
//
return obj;
}
try
{
obj = (Persistent) roleObject.newInstance();
}
catch (Exception e)
{
log.error("Could not instantiate a role object", e);
obj = null;
}
return obj;
}
/**
* Retrieves/assembles a RoleSet based on the Criteria passed in
*
* @param criteria A criteria containing a pre-assembled set of criterias
* for the RoleSet
*
* @return A Set of roles which fulfil the required criterias
*
* @exception Exception A generic exception.
*
*/
public static RoleSet retrieveSet(Criteria criteria)
throws Exception
{
List results = doSelect(criteria);
RoleSet rs = new RoleSet();
for (Iterator it = results.iterator(); it.hasNext(); )
{
rs.add((Role) it.next());
}
return rs;
}
/**
* Retrieves a set of Roles that an User was assigned in a Group
*
* @param user An user object
* @param group A group object
*
* @return A Set of Roles of this User in the Group
*
* @exception Exception A generic exception.
*/
public static RoleSet retrieveSet(User user, Group group)
throws Exception
{
Criteria criteria = new Criteria();
criteria.add(UserPeerManager.getNameColumn(),
user.getName());
criteria.add(TurbineUserGroupRolePeer.GROUP_ID,
((Persistent) group).getPrimaryKey());
criteria.addJoin(UserPeerManager.getIdColumn(),
TurbineUserGroupRolePeer.USER_ID);
criteria.addJoin(TurbineUserGroupRolePeer.ROLE_ID, getIdColumn());
return retrieveSet(criteria);
}
/**
* Checks if a Role is defined in the system. The name
* is used as query criteria.
*
* @param role The Role to be checked.
* @return <code>true</code> if given Role exists in the system.
* @throws DataBackendException when more than one Role with
* the same name exists.
* @throws Exception A generic exception.
*/
public static boolean checkExists(Role role)
throws DataBackendException, Exception
{
Criteria criteria = new Criteria();
criteria.addSelectColumn(getIdColumn());
criteria.add(getNameColumn(), role.getName());
List results = BasePeer.doSelect(criteria);
if (results.size() > 1)
{
throw new DataBackendException("Multiple roles named '" +
role.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(Role role) in the configured RolePeer. If you get
* a ClassCastException in this routine, you put a Role 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 role An object which implements the Role interface
*
* @return A criteria for the supplied role object
*/
public static Criteria buildCriteria(Role role)
{
Criteria crit;
try
{
Class[] clazz = new Class[] { roleObject };
Object[] params =
new Object[] { ((TorqueRole) role).getPersistentObj() };
crit = (Criteria) rolePeerClass
.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 };
rolePeerClass
.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 };
rolePeerClass
.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 Role 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) rolePeerClass
.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 TorqueRoles.
//
for (Iterator it = list.iterator(); it.hasNext(); )
{
Role r = getNewRole((Persistent) it.next());
newList.add(r);
}
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 };
rolePeerClass
.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 setRoleName(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 Role 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 getRoleName(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 Role 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 Role 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 Role 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) rolePeerClass
.getMethod("getOMClass", (Class[])null)
.invoke(null, params);
}
catch (Exception e)
{
persistenceClass = null;
}
return persistenceClass;
}
/**
* Returns a new, configured Role Object with
* a supplied Persistent object at its core
*
* @param p The persistent object
*
* @return a new, configured Role Object
*
* @exception Exception Could not create a new Object
*
*/
public static Role getNewRole(Persistent p)
{
Role r = null;
try
{
Class roleWrapperClass = TurbineSecurity.getRoleClass();
Class [] clazz = new Class [] { Persistent.class };
Object [] params = new Object [] { p };
r = (Role) roleWrapperClass
.getConstructor(clazz)
.newInstance(params);
}
catch (Exception e)
{
log.error("Could not instantiate a new role from supplied persistent: ", e);
}
return r;
}
}