Examples of java.beans.FeatureDescriptor

java.beans.FeatureDescriptor
The FeatureDescriptor class is the common baseclass for PropertyDescriptor, EventSetDescriptor, and MethodDescriptor, etc.
It supports some common information that can be set and retrieved for any of the introspection descriptors.
In addition it provides an extension mechanism so that arbitrary attribute/value pairs can be associated with a design feature.


        attrs = ctxt.getAttributeNamesInScope(PageContext.PAGE_SCOPE);
        while (attrs.hasMoreElements()) {
            String name = (String) attrs.nextElement();
            Object value = ctxt.getAttribute(name, PageContext.PAGE_SCOPE);
            FeatureDescriptor descriptor = new FeatureDescriptor();
            descriptor.setName(name);
            descriptor.setDisplayName(name);
            descriptor.setShortDescription("page scope attribute");
            descriptor.setExpert(false);
            descriptor.setHidden(false);
            descriptor.setPreferred(true);
            descriptor.setValue("type", value.getClass());
            descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
            list.add(descriptor);
        }


        attrs = ctxt.getAttributeNamesInScope(PageContext.REQUEST_SCOPE);
        while (attrs.hasMoreElements()) {
            String name = (String) attrs.nextElement();
            Object value = ctxt.getAttribute(name, PageContext.REQUEST_SCOPE);
            FeatureDescriptor descriptor = new FeatureDescriptor();
            descriptor.setName(name);
            descriptor.setDisplayName(name);
            descriptor.setShortDescription("request scope attribute");
            descriptor.setExpert(false);
            descriptor.setHidden(false);
            descriptor.setPreferred(true);
            descriptor.setValue("type", value.getClass());
            descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
            list.add(descriptor);
        }


        attrs = ctxt.getAttributeNamesInScope(PageContext.SESSION_SCOPE);
        while (attrs.hasMoreElements()) {
            String name = (String) attrs.nextElement();
            Object value = ctxt.getAttribute(name, PageContext.SESSION_SCOPE);
            FeatureDescriptor descriptor = new FeatureDescriptor();
            descriptor.setName(name);
            descriptor.setDisplayName(name);
            descriptor.setShortDescription("session scope attribute");
            descriptor.setExpert(false);
            descriptor.setHidden(false);
            descriptor.setPreferred(true);
            descriptor.setValue("type", value.getClass());
            descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
            list.add(descriptor);
        }


        attrs = ctxt.getAttributeNamesInScope(PageContext.APPLICATION_SCOPE);
        while (attrs.hasMoreElements()) {
            String name = (String) attrs.nextElement();
            Object value = ctxt.getAttribute(name, PageContext.APPLICATION_SCOPE);
            FeatureDescriptor descriptor = new FeatureDescriptor();
            descriptor.setName(name);
            descriptor.setDisplayName(name);
            descriptor.setShortDescription("application scope attribute");
            descriptor.setExpert(false);
            descriptor.setHidden(false);
            descriptor.setPreferred(true);
            descriptor.setValue("type", value.getClass());
            descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
            list.add(descriptor);
        }
        return list.iterator();
    }

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                                            Object base) {
        ArrayList<FeatureDescriptor> list =
                                        new ArrayList<FeatureDescriptor>(11);


        // pageContext
        FeatureDescriptor descriptor = new FeatureDescriptor();
        descriptor.setName("pageContext");
        descriptor.setDisplayName("pageContext");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", javax.servlet.jsp.PageContext.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // pageScope
        descriptor = new FeatureDescriptor();
        descriptor.setName("pageScope");
        descriptor.setDisplayName("pageScope");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // requestScope
        descriptor = new FeatureDescriptor();
        descriptor.setName("requestScope");
        descriptor.setDisplayName("requestScope");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // sessionScope
        descriptor = new FeatureDescriptor();
        descriptor.setName("sessionScope");
        descriptor.setDisplayName("sessionScope");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // applicationScope
        descriptor = new FeatureDescriptor();
        descriptor.setName("applicationScope");
        descriptor.setDisplayName("applicationScope");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // param
        descriptor = new FeatureDescriptor();
        descriptor.setName("param");
        descriptor.setDisplayName("param");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // paramValues
        descriptor = new FeatureDescriptor();
        descriptor.setName("paramValues");
        descriptor.setDisplayName("paramValues");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // header
        descriptor = new FeatureDescriptor();
        descriptor.setName("header");
        descriptor.setDisplayName("header");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // headerValues
        descriptor = new FeatureDescriptor();
        descriptor.setName("headerValues");
        descriptor.setDisplayName("headerValues");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // cookie
        descriptor = new FeatureDescriptor();
        descriptor.setName("cookie");
        descriptor.setDisplayName("cookie");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        // initParam
        descriptor = new FeatureDescriptor();
        descriptor.setName("initParam");
        descriptor.setDisplayName("initParam");
        //descriptor.setShortDescription("");
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setValue("type", Map.class);
        descriptor.setValue("resolvableAtDesignTime", Boolean.TRUE);
        list.add(descriptor);


        return list.iterator();
    }

View Full Code Here

    public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) {
        if (base instanceof Map<?, ?>) {
            Iterator<?> itr = ((Map<?, ?>) base).keySet().iterator();
            List<FeatureDescriptor> feats = new ArrayList<FeatureDescriptor>();
            Object key;
            FeatureDescriptor desc;
            while (itr.hasNext()) {
                key = itr.next();
                desc = new FeatureDescriptor();
                desc.setDisplayName(key.toString());
                desc.setExpert(false);
                desc.setHidden(false);
                desc.setName(key.toString());
                desc.setPreferred(true);
                desc.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.FALSE);
                desc.setValue(TYPE, key.getClass());
                feats.add(desc);
            }
            return feats.iterator();
        }
        return null;

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    @Override
    public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) {
        if (base instanceof List<?>) {
            FeatureDescriptor[] descs = new FeatureDescriptor[((List<?>) base).size()];
            for (int i = 0; i < descs.length; i++) {
                descs[i] = new FeatureDescriptor();
                descs[i].setDisplayName("["+i+"]");
                descs[i].setExpert(false);
                descs[i].setHidden(false);
                descs[i].setName(""+i);
                descs[i].setPreferred(true);

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        resolver.collectBeanInfo(applicationScope, expected);
        Iterator<FeatureDescriptor> featureIt = resolver.getFeatureDescriptors(
                context, null);
        Iterator<FeatureDescriptor> expectedIt = expected.iterator();
        while (featureIt.hasNext() && expectedIt.hasNext()) {
            FeatureDescriptor expectedDescriptor = expectedIt.next();
            FeatureDescriptor descriptor = featureIt.next();
            assertEquals("The feature is not the same", expectedDescriptor
                    .getDisplayName(), descriptor.getDisplayName());
            assertEquals("The feature is not the same", expectedDescriptor
                    .getName(), descriptor.getName());
            assertEquals("The feature is not the same", expectedDescriptor
                    .getShortDescription(), descriptor.getShortDescription());
            assertEquals("The feature is not the same", expectedDescriptor
                    .getValue("type"), descriptor.getValue("type"));
            assertEquals("The feature is not the same", expectedDescriptor
                    .getValue("resolvableAtDesignTime"), descriptor
                    .getValue("resolvableAtDesignTime"));
            assertEquals("The feature is not the same", expectedDescriptor
                    .isExpert(), descriptor.isExpert());
            assertEquals("The feature is not the same", expectedDescriptor
                    .isHidden(), descriptor.isHidden());
            assertEquals("The feature is not the same", expectedDescriptor
                    .isPreferred(), descriptor.isPreferred());
        }
        assertTrue("The feature descriptors are not of the same size",
                !featureIt.hasNext() && !expectedIt.hasNext());
    }

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        if (map == null || map.isEmpty()) {
            return;
        }


        for (Map.Entry<String, ? extends Object> entry : map.entrySet()) {
            FeatureDescriptor descriptor = new FeatureDescriptor();
            descriptor.setDisplayName(entry.getKey());
            descriptor.setExpert(false);
            descriptor.setHidden(false);
            descriptor.setName(entry.getKey());
            descriptor.setPreferred(true);
            descriptor.setShortDescription("");
            descriptor.setValue("type", String.class);
            descriptor.setValue("resolvableAtDesignTime", Boolean.FALSE);
            list.add(descriptor);
        }
    }

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    private FeatureDescriptor getFeatureDescriptor(String name, String displayName, String desc,
                                                   boolean expert, boolean hidden, boolean preferred,
                                                   Object type, Boolean designTime)
    {


      FeatureDescriptor fd = new FeatureDescriptor();
      fd.setName(name);
      fd.setDisplayName(displayName);
      fd.setShortDescription(desc);
      fd.setExpert(expert);
      fd.setHidden(hidden);
      fd.setPreferred(preferred);
      fd.setValue(ELResolver.TYPE, type);
      fd.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, designTime);
      return fd;
    }

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    @Override
    public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) {
        List<FeatureDescriptor> feats = new ArrayList<FeatureDescriptor>(
                SCOPE_NAMES.length);
        FeatureDescriptor feat;
        for (int i = 0; i < SCOPE_NAMES.length; i++) {
            feat = new FeatureDescriptor();
            feat.setDisplayName(SCOPE_NAMES[i]);
            feat.setExpert(false);
            feat.setHidden(false);
            feat.setName(SCOPE_NAMES[i]);
            feat.setPreferred(true);
            feat.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
            feat.setValue(TYPE, String.class);
            feats.add(feat);
        }
        return feats.iterator();
    }

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        }


        public FeatureDescriptor next() {
            if (!hasNext())
                throw new NoSuchElementException();
            FeatureDescriptor result = this.next;
            this.next = null;
            return result;


        }

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   */
  private List<FeatureDescriptor> _createFeatureDescriptorList()
  {
    ArrayList<FeatureDescriptor> list = new ArrayList<FeatureDescriptor>();
    // FeatureDescriptor for "requestContext"
    FeatureDescriptor requestContext = new FeatureDescriptor();
    requestContext.setName(RequestContext.VARIABLE_NAME);
    // TODO translate this
    requestContext.setShortDescription("Trinidad RequestContext");
    requestContext.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, false);
    requestContext.setValue(ELResolver.TYPE, RequestContext.class);
    list.add(requestContext);
    
    // FeatureDescriptor for "pageFlowScope"
    FeatureDescriptor pageFlowScope = new FeatureDescriptor();
    pageFlowScope.setName(PAGE_FLOW_SCOPE_VARIABLE_NAME);
    // TODO translate this
    pageFlowScope.setShortDescription("Trinidad Page Flow Scope");
    pageFlowScope.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, false);
    pageFlowScope.setValue(ELResolver.TYPE, Map.class);
    list.add(pageFlowScope);
    
    // FeatureDescriptor for "processScope"
    FeatureDescriptor processScope = new FeatureDescriptor();
    processScope.setName(PAGE_FLOW_SCOPE_VARIABLE_NAME);
    // TODO translate this
    pageFlowScope.setShortDescription(
      "Backwards compatibility alias for Trinidad Page Flow Scope");
    processScope.setExpert(true);
    processScope.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, false);
    processScope.setValue(ELResolver.TYPE, Map.class);
    list.add(pageFlowScope);


    return Collections.unmodifiableList(list);
  }

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