Examples of InternalContextAdapterImpl

org.apache.flex.forks.velocity.context.InternalContextAdapterImpl
This adapter class is the container for all context types for internal use. The AST now uses this class rather than the app-level Context interface to allow flexibility in the future. Currently, we have two context interfaces which must be supported :
- Context : used for application/template data access
- InternalHousekeepingContext : used for internal housekeeping and caching
- InternalWrapperContext : used for getting root cache context and other such.
- InternalEventContext : for event handling.
This class implements the two interfaces to ensure that all methods are supported. When adding to the interfaces, or adding more context functionality, the interface is the primary definition, so alter that first and then all classes as necessary. As of this writing, this would be the only class affected by changes to InternalContext This class ensures that an InternalContextBase is available for internal use. If an application constructs their own Context-implementing object w/o subclassing AbstractContext, it may be that support for InternalContext is not available. Therefore, InternalContextAdapter will create an InternalContextBase if necessary for this support. Note that if this is necessary, internal information such as node-cache data will be lost from use to use of the context. This may or may not be important, depending upon application. @author Geir Magnusson Jr. @version $Id: InternalContextAdapterImpl.java,v 1.8.12.1 2004/03/03 23:22:54 geirm Exp $
org.apache.velocity.context.InternalContextAdapterImpl
This adapter class is the container for all context types for internal use. The AST now uses this class rather than the app-level Context interface to allow flexibility in the future. Currently, we have two context interfaces which must be supported :
- Context : used for application/template data access
- InternalHousekeepingContext : used for internal housekeeping and caching
- InternalWrapperContext : used for getting root cache context and other such.
- InternalEventContext : for event handling.
This class implements the two interfaces to ensure that all methods are supported. When adding to the interfaces, or adding more context functionality, the interface is the primary definition, so alter that first and then all classes as necessary. As of this writing, this would be the only class affected by changes to InternalContext This class ensures that an InternalContextBase is available for internal use. If an application constructs their own Context-implementing object w/o subclassing AbstractContext, it may be that support for InternalContext is not available. Therefore, InternalContextAdapter will create an InternalContextBase if necessary for this support. Note that if this is necessary, internal information such as node-cache data will be lost from use to use of the context. This may or may not be important, depending upon application. @author Geir Magnusson Jr. @version $Id: InternalContextAdapterImpl.java 291585 2005-09-26 08:56:23Z henning $

Examples of org.apache.flex.forks.velocity.context.InternalContextAdapterImpl

                    /*
                     *  init.  be a good citizen and give it an ICA
                     */


                    InternalContextAdapter ica
                            = new InternalContextAdapterImpl(new VelocityContext());


                    ica.pushCurrentTemplateName("VMProxyArg : "
                            + ParserTreeConstants.jjtNodeName[type]);


                    nodeTree.init(ica, rsvc);
                } 
                catch ( Exception e )

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Examples of org.apache.flex.forks.velocity.context.InternalContextAdapterImpl

         * now we want to init and render
         */


        if (nodeTree != null)
        {
            InternalContextAdapterImpl ica = 
                new InternalContextAdapterImpl( context );
            
            ica.pushCurrentTemplateName( logTag );
            
            try
            {
                try
                {
                    nodeTree.init( ica, ri );
                }
                catch( Exception e )
                {
                    ri.error("Velocity.evaluate() : init exception for tag = " 
                                  + logTag + " : " + e );
                }
                
                /*
                 *  now render, and let any exceptions fly
                 */


                nodeTree.render( ica, writer );
            }
            finally
            {
                ica.popCurrentTemplateName();
            }
            
            return true;
        }

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Examples of org.apache.flex.forks.velocity.context.InternalContextAdapterImpl

         * now we want to init and render
         */


        if (nodeTree != null)
        {
            InternalContextAdapterImpl ica =
                new InternalContextAdapterImpl( context );


            ica.pushCurrentTemplateName( logTag );


            try
            {
                try
                {
                    nodeTree.init( ica, RuntimeSingleton.getRuntimeServices() );
                }
                catch( Exception e )
                {
                    RuntimeSingleton.error("Velocity.evaluate() : init exception for tag = "
                                  + logTag + " : " + e );
                }


                /*
                 *  now render, and let any exceptions fly
                 */


                nodeTree.render( ica, writer );
            }
            finally
            {
                ica.popCurrentTemplateName();
            }


            return true;
        }

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Examples of org.apache.flex.forks.velocity.context.InternalContextAdapterImpl

    {
        /*
         *  send an empty InternalContextAdapter down into the AST to initialize it
         */
        
        InternalContextAdapterImpl ica = new InternalContextAdapterImpl(  new VelocityContext() );


        try
        {
            /*
             *  put the current template name on the stack
             */


            ica.pushCurrentTemplateName( name );
            
            /*
             *  init the AST
             */


            ((SimpleNode)data).init( ica, rsvc);
        }
        finally
        {
            /*  
             *  in case something blows up...
             *  pull it off for completeness
             */


            ica.popCurrentTemplateName();
        }


    }

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Examples of org.apache.velocity.context.InternalContextAdapterImpl

        /*
         * now we want to init and render
         */


        if (nodeTree != null) {
            InternalContextAdapterImpl ica =
                new InternalContextAdapterImpl(context);


            ica.pushCurrentTemplateName(logTag);


            try {
                try {
                    nodeTree.init(ica, ri);
                }
                catch (TemplateInitException pex) {
                    throw new ParseErrorException(pex);
                }
                /**
                 * pass through application level runtime exceptions
                 */
                catch (RuntimeException e) {
                    throw e;
                }
                catch (Exception e) {
                    getLog().error("Velocity.evaluate() : init exception for tag = "
                        + logTag, e);
                }


                /*
                 *  now render, and let any exceptions fly
                 */


                nodeTree.render(ica, writer);
            }
            finally {
                ica.popCurrentTemplateName();
            }


            return true;
        }

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Examples of org.apache.velocity.context.InternalContextAdapterImpl

        /*
         * now we want to init and render
         */


        if (nodeTree != null) {
            InternalContextAdapterImpl ica =
                new InternalContextAdapterImpl(context);


            ica.pushCurrentTemplateName(logTag);


            try {
                try {
                    nodeTree.init(ica, ri);
                }
                catch (TemplateInitException pex) {
                    throw new ParseErrorException(pex);
                }
                /**
                 * pass through application level runtime exceptions
                 */
                catch (RuntimeException e) {
                    throw e;
                }
                catch (Exception e) {
                    getLog().error("Velocity.evaluate() : init exception for tag = "
                        + logTag, e);
                }


                /*
                 *  now render, and let any exceptions fly
                 */


                nodeTree.render(ica, writer);
            }
            finally {
                ica.popCurrentTemplateName();
            }


            return true;
        }

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Examples of org.apache.velocity.context.InternalContextAdapterImpl

     * @param writer The writer to which the merged template will be written.
     * @throws IOException thrown when the merging fails.
     */
    public void merge(Context context, Writer writer) throws IOException {


        InternalContextAdapterImpl ica = new InternalContextAdapterImpl(context);


        ica.pushCurrentTemplateName(name);


        try {


            node.render(ica, writer);


        } catch (IOException ioe) {
            logger.error("Could not merge veloctiy template '" + name + "'", ioe);
            throw ioe;
        } finally {
            ica.popCurrentTemplateName();
        }
    }

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Examples of org.apache.velocity.context.InternalContextAdapterImpl

     * @param node The node to initialize.
     * @param ri The velcotiy runtime instance that will be used while initilizing.
     * @param name A name to be associated with the template to be used in log messages.
     */
    protected static void init(SimpleNode node, ExtendedRuntimeInstance ri, String name) {
        InternalContextAdapterImpl ica = new InternalContextAdapterImpl(  new VelocityContext() );
        try {


            ica.pushCurrentTemplateName( name );
            node.init(ica, ri);


        } finally {
            ica.popCurrentTemplateName();
        }
    }

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Examples of org.apache.velocity.context.InternalContextAdapterImpl

                          String logTag, SimpleNode nodeTree) throws IOException
    {
        /*
         * we want to init then render
         */
        InternalContextAdapterImpl ica =
            new InternalContextAdapterImpl(context);


        ica.pushCurrentTemplateName(logTag);


        try
        {
            try
            {
                nodeTree.init(ica, this);
            }
            catch (TemplateInitException pex)
            {
                throw new ParseErrorException(pex);
            }
            /**
             * pass through application level runtime exceptions
             */
            catch(RuntimeException e)
            {
                throw e;
            }
            catch(Exception e)
            {
                String msg = "RuntimeInstance.render(): init exception for tag = "+logTag;
                getLog().error(msg, e);
                throw new VelocityException(msg, e);
            }


            /*
             *  now render, and let any exceptions fly
             */
            nodeTree.render(ica, writer);
        }
        finally
        {
            ica.popCurrentTemplateName();
        }


        return true;
    }

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Examples of org.apache.velocity.context.InternalContextAdapterImpl

                          String logTag, SimpleNode nodeTree) throws IOException
    {
        /*
         * we want to init then render
         */
        InternalContextAdapterImpl ica =
            new InternalContextAdapterImpl(context);


        ica.pushCurrentTemplateName(logTag);


        try
        {
            try
            {
                nodeTree.init(ica, this);
            }
            catch (TemplateInitException pex)
            {
                throw new ParseErrorException(pex);
            }
            /**
             * pass through application level runtime exceptions
             */
            catch(RuntimeException e)
            {
                throw e;
            }
            catch(Exception e)
            {
                String msg = "RuntimeInstance.render(): init exception for tag = "+logTag;
                getLog().error(msg, e);
                throw new VelocityException(msg, e);
            }


            /*
             *  now render, and let any exceptions fly
             */
            nodeTree.render(ica, writer);
        }
        finally
        {
            ica.popCurrentTemplateName();
        }


        return true;
    }

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