Examples of org.apache.avalon.framework.service.ServiceManager

Package org.apache.avalon.framework.service

Examples of org.apache.avalon.framework.service.ServiceManager

org.apache.avalon.framework.service.ServiceManager
A ServiceManager selects Objects based on a role. The contract is that all the Objects implement the differing roles and there is one Object per role. If you need to select on of many Objects that implement the same role, then you need to use a ServiceSelector. Roles are usually the full interface name. A role is better understood by the analogy of a play. There are many different roles in a script. Any actor or actress can play any given part and you get the same results (phrases said, movements made, etc.). The exact nuances of the performance is different. Below is a list of things that might be considered the different roles:
- InputAdapter and OutputAdapter
- Store and Spool
The ServiceManager does not specify the methodology of getting the Object, merely the interface used to get it. Therefore the ServiceManager can be implemented with a factory pattern, an object pool, or a simple Hashtable. @author Avalon Development Team @version CVS $Revision: 1.17 $ $Date: 2004/02/11 14:34:25 $ @see org.apache.avalon.framework.service.Serviceable @see org.apache.avalon.framework.service.ServiceSelector

            autoBracket = new Boolean(getInitParameter("autobracket")).booleanValue();
        } catch (Exception e) {
            // Ignore any exceptions, default to true
        }


        ServiceManager compMgr = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        try {
            UsersStore usersStore = (UsersStore)compMgr.lookup(UsersStore.ROLE);
            String repName = getInitParameter("repositoryName");


            members = (UsersRepository)usersStore.getRepository( repName );
        } catch (ServiceException cnfe) {
            log("Failed to retrieve Store component:" + cnfe.getMessage());

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    /**
     * Fetch the repository of users
     */
    protected void initUsersRepository() {
        ServiceManager compMgr = (ServiceManager) getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        try {
            UsersStore usersStore = (UsersStore) compMgr.lookup(UsersStore.ROLE);
            String repName = getInitParameter("repositoryName");


            usersRepository = usersStore.getRepository(repName);
        } catch (Exception e) {
            log("Failed to retrieve Store component:" + e.getMessage());

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        }


        Connection conn = null;


        try {
            ServiceManager componentManager = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
            // Get the DataSourceSelector service
            DataSourceSelector datasources = (DataSourceSelector)componentManager.lookup(DataSourceSelector.ROLE);
            // Get the data-source required.
            datasource = (DataSourceComponent)datasources.select(datasourceName);


            conn = datasource.getConnection();

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    /**
     * Initialize the mailet
     */
    public void init() {
        ServiceManager compMgr = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        try {
            UsersStore usersStore = (UsersStore) compMgr.lookup(UsersStore.ROLE);
            String repName = getInitParameter("repositoryName");


            members = (UsersRepository) usersStore.getRepository(repName);
        } catch (ServiceException cnfe) {
            log("Failed to retrieve Store component:" + cnfe.getMessage());

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     * Standard matcher initialization.
     * Overriding classes must do a <CODE>super.init()</CODE>.
     */
    public void init() throws MessagingException {
        super.init();
        ServiceManager compMgr = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        try {
            mailServer = (MailServer) compMgr.lookup(MailServer.ROLE);
        } catch (ServiceException e) {
            log("Exception in getting the MailServer: " + e.getMessage() + e.getKey());
        }
        try {
            localusers = (UsersRepository) compMgr.lookup(UsersRepository.ROLE);
        } catch (ServiceException e) {
            log("Exception in getting the UsersStore: " + e.getMessage() + e.getKey());
        }
    }

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    /**
     * @see org.apache.mailet.GenericMailet#init()
     */
    public void init() throws MessagingException {
        super.init();
        ServiceManager compMgr = (ServiceManager) getMailetContext()
                .getAttribute(Constants.AVALON_COMPONENT_MANAGER);


        UsersStore usersStore;
        try {
            usersStore = (UsersStore) compMgr.lookup(UsersStore.ROLE);




            enableAliases = new Boolean(getInitParameter("enableAliases",
                    getMailetContext().getAttribute(Constants.DEFAULT_ENABLE_ALIASES).toString()
                    )).booleanValue();
            enableForwarding = new Boolean(getInitParameter("enableForwarding",
                    getMailetContext().getAttribute(Constants.DEFAULT_ENABLE_FORWARDING).toString()
                    )).booleanValue();
            ignoreCase = new Boolean(getInitParameter("ignoreCase",
                    getMailetContext().getAttribute(Constants.DEFAULT_IGNORE_USERNAME_CASE).toString()
                    )).booleanValue();
            
            String userRep = getInitParameter("usersRepository");
            if (userRep == null || userRep.length() == 0) {
                try {
                    usersRepository = (UsersRepository) compMgr
                            .lookup(UsersRepository.ROLE);
                } catch (ServiceException e) {
                    log("Failed to retrieve UsersRepository component:"
                            + e.getMessage());
                }

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     * Standard matcher initialization.
     * Overriding classes must do a <CODE>super.init()</CODE>.
     */
    public void init() throws MessagingException {
        super.init();
        ServiceManager compMgr = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        try {
            mailServer = (MailServer) compMgr.lookup(MailServer.ROLE);
        } catch (ServiceException e) {
            log("Exception in getting the MailServer: " + e.getMessage() + e.getKey());
        }
        try {
            localusers = (UsersRepository) compMgr.lookup(UsersRepository.ROLE);
        } catch (ServiceException e) {
            log("Exception in getting the UsersStore: " + e.getMessage() + e.getKey());
        }
    }

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    /**
     * Fetch the repository of users
     */
    protected void initUsersRepository() throws Exception {
        ServiceManager compMgr = (ServiceManager) getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        UsersStore usersStore = (UsersStore) compMgr.lookup(UsersStore.ROLE);
        String repName = getInitParameter("repositoryName");


        usersRepository = usersStore.getRepository(repName);
        if (usersRepository == null) throw new Exception("Invalid user repository: " + repName);
    }

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    }
    
    private void initDb() throws MessagingException {
        
        try {
            ServiceManager serviceManager = (ServiceManager) getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
            
            // Get the DataSourceSelector block
            DataSourceSelector datasources = (DataSourceSelector) serviceManager.lookup(DataSourceSelector.ROLE);
            
            // Get the data-source required.
            int stindex =   repositoryPath.indexOf("://") + 3;
            
            String datasourceName = repositoryPath.substring(stindex);

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            delete = (getInitParameter("delete") == null) ? false : new Boolean(getInitParameter("delete")).booleanValue();
        } catch (Exception e) {
            // Ignore exception, default to false
        }


        ServiceManager compMgr = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
        try {
            Store mailstore = (Store) compMgr.lookup(Store.ROLE);
            DefaultConfiguration mailConf
                = new DefaultConfiguration("repository", "generated:ToRepository");
            mailConf.setAttribute("destinationURL", repositoryPath);
            mailConf.setAttribute("type", "MAIL");
            repository = (MailRepository) mailstore.select(mailConf);

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