Package org.apache.avalon.framework.service

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

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                throw new IllegalArgumentException("illegal usage, source document may not be null");

            // create new doc from PUT input
            if (!doc.exists()) {
                DocumentManager documentManager = null;
                ServiceSelector selector = null;
                ResourceType resourceType = null;
                try {
                    selector = (ServiceSelector) this.manager
                            .lookup(ResourceType.ROLE + "Selector");

                    documentManager = (DocumentManager) this.manager.lookup(DocumentManager.ROLE);

                    DocumentFactory map = getDocumentFactory();
                    String path = doc.getPath();
                    // lookupResourceType(extension)
                    resourceType = lookUpExtension(extension, selector);
                    ResourceType.Sample sample = resourceType.getSample(resourceType.getSampleNames()[0]);
                    doc = documentManager.add(map, resourceType, sample.getUri(), getPublication(), doc
                            .getArea(), path, doc.getLanguage(), extension, doc.getName(), true);
                    doc.setMimeType(sample.getMimeType());
                    setMetaData(doc);
                } finally {
                    if (documentManager != null) {
                        this.manager.release(documentManager);
                    }
                    if (selector != null) {
                        if (resourceType != null) {
                            selector.release(resourceType);
                        }
                        this.manager.release(selector);
                    }
                }
            }
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        return true;
    }

    protected String getDocumentTypeName() {
        ResourceType resourceType = null;
        ServiceSelector selector = null;
        String docType = "";
        try {
            selector = (ServiceSelector) this.manager.lookup(ResourceType.ROLE + "Selector");
            resourceType = lookUpExtension(getSourceExtension(), selector);
            docType = resourceType.getName();
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        // Get the model optional element
        Element modelElt = DomHelper.getChildElement(widgetElement, FormsConstants.DEFINITION_NS, "tree-model", false);
        if (modelElt != null) {
            String type = DomHelper.getAttribute(modelElt, "type");
            ServiceSelector selector =
                (ServiceSelector)this.serviceManager.lookup(TreeModelDefinitionBuilder.ROLE + "Selector");

            TreeModelDefinitionBuilder builder = (TreeModelDefinitionBuilder)selector.select(type);
            try {
                definition.setModelDefinition(builder.build(modelElt));
            } finally {
                selector.release(builder);
                serviceManager.release(selector);
            }
        }

        // parse "on-selection-changed"
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                resource.normalize();
                // use serializer
                if (localSerializer == null) localSerializer = this.configuredSerializerName;
                if (localSerializer != null) {
                    // Lookup the Serializer
                    ServiceSelector selector = null;
                    Serializer serializer = null;
                    OutputStream oStream = null;
                    try {
                        selector = (ServiceSelector)manager.lookup(Serializer.ROLE + "Selector");
                        serializer = (Serializer)selector.select(localSerializer);
                        oStream = ws.getOutputStream();
                        serializer.setOutputStream(oStream);
                        DOMStreamer streamer = new DOMStreamer(serializer);
                        streamer.stream(resource);
                    } finally {
                        if (oStream != null) {
                            oStream.flush();
                            try {
                                oStream.close();
                                failed = false;
                            } catch (Throwable t) {
                                if (getLogger().isDebugEnabled()) {
                                    getLogger().debug("FAIL (oStream.close) exception"+t, t);
                                }
                                throw new ProcessingException("Could not process your document.", t);
                            } finally {
                                if ( selector != null ) {
                                        selector.release( serializer );
                                        this.manager.release( selector );
                                }
                            }
                        }
                    }
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    /**
     * Obtain values from the used InputModule.
     */
    private Object[] getValues(String name) {
        Object[] values = null;
        ServiceSelector iputSelector = null;
        InputModule iput = null;
        try {
            if (this.input != null) {
                // input module is thread safe
                // thus we still have a reference to it
                values = input.getAttributeValues(name, this.inputConf, objectModel);
                if (getLogger().isDebugEnabled())
                    getLogger().debug("cached module " + this.input
                                      + " attribute " + name
                                      + " returns " + values);
            } else {
                // input was not thread safe
                // so acquire it again
                iputSelector = (ServiceSelector)this.manager.lookup(INPUT_MODULE_SELECTOR);
                if (this.inputName != null
                    && iputSelector != null
                    && iputSelector.isSelectable(this.inputName)) {

                    iput = (InputModule) iputSelector.select(this.inputName);
                }
                if (iput != null) {
                    values = iput.getAttributeValues(name, this.inputConf, objectModel);
                }
                if (getLogger().isDebugEnabled())
                    getLogger().debug(
                        "fresh module " + iput + " attribute " + name + " returns " + values);
            }
        } catch (Exception e) {
            if (getLogger().isWarnEnabled())
                getLogger().warn(
                    "A problem occurred acquiring a value from '"
                        + this.inputName
                        + "' for '"
                        + name
                        + "': "
                        + e.getMessage());
        } finally {
            // release components if necessary
            if (iputSelector != null) {
                if (iput != null)
                    iputSelector.release(iput);
                this.manager.release(iputSelector);
            }
        }

        return values;
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        definition.service(this.serviceManager);

        Element selectionListElement = DomHelper.getChildElement(widgetElement, Constants.DEFINITION_NS, "selection-list");
        if (selectionListElement != null) {
            // Get an appropriate list builder
            ServiceSelector builderSelector = (ServiceSelector)this.serviceManager.lookup(SelectionListBuilder.ROLE + "Selector");
            SelectionListBuilder builder = null;
            try {
                // listType can be null, meaning we will use the default selection list
                String listType = selectionListElement.getAttribute("type");
                if ("".equals(listType)) {
                    listType = null;
                }

                builder = (SelectionListBuilder)builderSelector.select(listType);
                SelectionList list = builder.build(selectionListElement, definition.getDatatype());
                definition.setSelectionList(list);
            } finally {
                if (builder != null) {
                    builderSelector.release(builder);
                }
                this.serviceManager.release(builderSelector);
            }
        }
    }
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     */
    public InputStream getInputStream()
    throws IOException {

        ServiceManager manager = null;
        ServiceSelector serializerSelector = null;
        Serializer serializer = null;
        // this.manager does not have Serializer
        try {
            manager = (ServiceManager) this.context.get(ContextHelper.CONTEXT_SITEMAP_SERVICE_MANAGER);
            serializerSelector = (ServiceSelector) manager.lookup(Serializer.ROLE + "Selector");
            serializer = (Serializer)serializerSelector.select("xml");
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            serializer.setOutputStream(os);

            toSAX(serializer);

            return new ByteArrayInputStream(os.toByteArray());
        } catch (ServiceException e) {
            throw new CascadingIOException("Could not lookup pipeline components", e);
        } catch (ContextException ce) {
            throw new CascadingIOException("Could not get service manager.", ce);
        } catch (Exception e) {
            throw new CascadingIOException("Exception during processing of " + getURI(), e);
        } finally {
            if (serializer != null) {
                serializerSelector.release(serializer);
            }
            if (serializerSelector != null) {
                manager.release(serializerSelector);
            }
        }
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        context.invokeNext( service );
  }

    private ConvertableEvent getEvent(PortalService service, String factoryName, String eventData) {
        ServiceSelector selector = null;
        ConvertableEventFactory factory = null;
        ConvertableEvent event;
        try {
            selector = (ServiceSelector) this.manager.lookup(ConvertableEventFactory.ROLE + "Selector");
            factory = (ConvertableEventFactory) selector.select(factoryName);
            event = factory.createEvent(service, eventData);
        } catch (ServiceException ce) {
            if (getLogger().isErrorEnabled()) {
                getLogger().error("Unable to create event for " + factoryName +
                    " using " + eventData);
            }
            event = null;
        } finally {
            if (selector != null) {
                selector.release(factory);
            }
            this.manager.release(selector);
        }
        return event;
    }
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        XMLUtils.startElement(handler, "content");
        CopletInstanceData cid = ((CopletLayout)layout).getCopletInstanceData();

        final String adapterName = cid.getCopletData().getCopletBaseData().getCopletAdapterName();
        CopletAdapter copletAdapter = null;
        ServiceSelector adapterSelector = null;
        try {
            adapterSelector = (ServiceSelector) this.manager.lookup(CopletAdapter.ROLE + "Selector");
            copletAdapter = (CopletAdapter) adapterSelector.select(adapterName);
            copletAdapter.toSAX(cid, new IncludeXMLConsumer(handler));
        } catch (ServiceException ce) {
            throw new SAXException("Unable to lookup component.", ce);
        } finally {
            if (null != copletAdapter) {
                adapterSelector.release(copletAdapter);
            }
            this.manager.release(adapterSelector);
        }

        XMLUtils.endElement(handler, "content");
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     */
    public InputStream getInputStream()
    throws IOException {

        ServiceManager manager = null;
        ServiceSelector serializerSelector = null;
        Serializer serializer = null;
        // this.manager does not have Serializer
        try {
            manager = (ServiceManager) this.context.get(ContextHelper.CONTEXT_SITEMAP_SERVICE_MANAGER);
            serializerSelector = (ServiceSelector) manager.lookup(Serializer.ROLE + "Selector");
            serializer = (Serializer)serializerSelector.select("xml");
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            serializer.setOutputStream(os);

            toSAX(serializer);

            return new ByteArrayInputStream(os.toByteArray());
        } catch (ServiceException e) {
            throw new CascadingIOException("Could not lookup pipeline components", e);
        } catch (ContextException ce) {
            throw new CascadingIOException("Could not get service manager.", ce);
        } catch (Exception e) {
            throw new CascadingIOException("Exception during processing of " + getURI(), e);
        } finally {
            if (serializer != null) {
                serializerSelector.release(serializer);
            }
            if (serializerSelector != null) {
                manager.release(serializerSelector);
            }
        }
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