Examples of org.apache.avalon.framework.parameters.Parameters

Package org.apache.avalon.framework.parameters

Examples of org.apache.avalon.framework.parameters.Parameters

org.apache.avalon.framework.parameters.Parameters
The Parameters class represents a set of key-value pairs.
The Parameters object provides a mechanism to obtain values based on a String name. There are convenience methods that allow you to use defaults if the value does not exist, as well as obtain the value in any of the same formats that are in the {@link Configuration} interface.
While there are similarities between the Parameters object and the java.util.Properties object, there are some important semantic differences. First, Parameters are read-only. Second, Parameters are easily derived from {@link Configuration} objects. Lastly, theParameters object is derived from XML fragments that look like this:
```
 <parameter name="param-name" value="param-value" /> 
```
Note: this class is not thread safe by default. If you require thread safety please synchronize write access to this class to prevent potential data corruption.
@author Avalon Development Team @version CVS $Revision: 1.41 $ $Date: 2004/02/11 14:34:25 $

        // Prepare data needed by the action
        Map            objectModel    = env.getObjectModel();
        Redirector     redirector     = PipelinesNode.getRedirector(env);
        SourceResolver resolver       = getSourceResolver(objectModel);
        String         resolvedSource = source.resolve(context, objectModel);
        Parameters     resolvedParams = VariableResolver.buildParameters(this.parameters, context, objectModel);


        Map actionResult;


        // If action is ThreadSafe, avoid select() and try/catch block (faster !)
        if (this.threadSafeAction != null) {

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                label = (String)stack.pop();
            }


        } else if (name.equals(CINCLUDE_CONFIGURATION_ELEMENT) == true
                 && this.state == STATE_INCLUDE) {
            this.configurationParameters = new Parameters();
            // Now get the parameters off the stack
            String label = (String)stack.pop();
            String key = null;
            String value = null;
            while (!label.equals("end")) {

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        return (result!=null? new ScriptableMap(result) : null);
    }


    public static Parameters jsobjectToParameters(Scriptable jsobject)
    {
        Parameters params = new Parameters();
        Object[] ids = jsobject.getIds();
        for (int i = 0; i < ids.length; i++) {
            String key = ScriptRuntime.toString(ids[i]);
            Object value = jsobject.get(key, jsobject);
            if (value == Undefined.instance) {
                value = null;
            } else {
                value = ScriptRuntime.toString(value);
            }
            params.setParameter(key, (String) value);
        }
        return params;
    }

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        // Perform any common invoke functionality 
        super.invoke(env, context);


        Map objectModel = env.getObjectModel();
        Parameters resolvedParams = VariableResolver.buildParameters(
            this.parameters, context, objectModel
        );


        Map result = null;

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     * Abstract out the Logicsheet creation.  Handles both Named and regular logicsheets.
     */
    private Logicsheet createLogicsheet(Configuration configuration, boolean named)
            throws Exception
    {
        Parameters params = Parameters.fromConfiguration(configuration);


        Logicsheet logicsheet;
        if (named) {
            String location = params.getParameter("href", null);
            String uri = params.getParameter("uri", null);
            String prefix = params.getParameter("prefix", null);


            NamedLogicsheet namedLogicsheet =
                new NamedLogicsheet(location, manager, resolver);
            namedLogicsheet.enableLogging(getLogger());
            namedLogicsheet.setURI(uri);
            namedLogicsheet.setPrefix(prefix);
            logicsheet = namedLogicsheet;
        } else {
            String location = params.getParameter("core-logicsheet", null);
            logicsheet = new Logicsheet(location, manager, resolver);
            logicsheet.enableLogging(getLogger());
        }


        String logicsheetName = logicsheet.getSystemId();

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            String actionName = actionNames[i];
            String source = sources[i].resolve(context, objectModel);
            if (actionName == null || actionName.equals(cocoonAction)) {


                Parameters actionParams = VariableResolver.buildParameters(parameters[i], context, objectModel);
                if (actionParams == Parameters.EMPTY_PARAMETERS) {
                    actionParams = params;
                } else {
                    actionParams.merge(params);
                }


                // If action is ThreadSafe, avoid select() and try/catch block (faster !)
                if ((action = this.threadSafeActions[i]) != null) {

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        URIParameterizer parameterizer = null;
        Map map = null;
        try {
            parameterizer = (URIParameterizer) manager.lookup(URIParameterizer.ROLE);


            Parameters parameters = new Parameters();
            parameters.setParameter(
                URI_PARAMETER_DOCTYPE,
                "cocoon://uri-parameter/"
                    + envelope.getPublication().getId()
                    + "/"
                    + URI_PARAMETER_DOCTYPE);

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            throws ConfigurationException, ParameterException {
        if (component instanceof Configurable) {
            ((Configurable) component).configure(configuration);
        }
        if (component instanceof Parameterizable) {
            Parameters parameters = Parameters.fromConfiguration(configuration);
            ((Parameterizable) component).parameterize(parameters);
        }
    }

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        Publication publication = PublicationHelper.getPublication();


        TaskManager manager = new TaskManager(publication.getDirectory().getCanonicalPath());
        AntTask task = (AntTask) manager.getTask(TaskManager.ANT_TASK);


        Parameters parameters = getTaskParameters();
        parameters.setParameter(Task.PARAMETER_PUBLICATION_ID, publication.getId());
        parameters.setParameter(Task.PARAMETER_CONTEXT_PREFIX, "/lenya");
        parameters.setParameter(Task.PARAMETER_SERVLET_CONTEXT,
            publication.getServletContext().getCanonicalPath());
        parameters.setParameter(AntTask.TARGET, getTarget());
        task.parameterize(parameters);


        final GregorianCalendar beforeExecution = new GregorianCalendar();


        task.execute(publication.getServletContext().getCanonicalPath());

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     * Returns the task parameters.
     * You don't need to specify the publication-id.
     * @return The task parameters.
     */
    protected Parameters getTaskParameters() {
        return new Parameters();
    }

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