Example usage for javax.servlet.jsp PageContext getAttribute

Introduction

In this page you can find the example usage for javax.servlet.jsp PageContext getAttribute.

Prototype

abstract public Object getAttribute(String name, int scope);

Source Link

Document

Return the object associated with the name in the specified scope or null if not found.

Usage

From source file:org.sakaiproject.iclicker.tool.ToolController.java

@SuppressWarnings("unchecked")
public static String[] getMessages(PageContext context, String key) {
    if (context == null || key == null) {
        throw new IllegalArgumentException(
                "context (" + context + ") and key (" + key + ") must both not be null");
    }//  w  ww.ja v  a  2  s  . co m
    String[] messages;
    String keyVal = ICLICKER_MESSAGES + key;
    if (context.getAttribute(keyVal, PageContext.REQUEST_SCOPE) == null) {
        messages = new String[] {};
    } else {
        List<String> l = (List<String>) context.getAttribute(keyVal, PageContext.REQUEST_SCOPE);
        messages = l.toArray(new String[l.size()]);
    }
    return messages;
}

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From source file:javax.faces.webapp.UIComponentTag.java

/**
 * Return the nearest JSF tag that encloses this tag.
 *//* www .  j av a 2  s .  c o m*/
public static UIComponentTag getParentUIComponentTag(PageContext pageContext) {
    // Question: why not just walk up the _parent chain testing for
    // instanceof UIComponentTag rather than maintaining a separate
    // stack with the pushTag and popTag methods?
    List list = (List) pageContext.getAttribute(COMPONENT_STACK_ATTR, PageContext.REQUEST_SCOPE);
    if (list != null) {
        return (UIComponentTag) list.get(list.size() - 1);
    }
    return null;
}

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From source file:com.feilong.taglib.util.TagUtils.java

/**
 * Locate and return the specified bean, from an optionally specified scope, in the specified page context. If no such bean is found,
 * return <code>null</code> instead. If an exception is thrown, it will have already been saved via a call to
 * <code>saveException()</code>.
 * /*w  w  w .ja  v a 2  s. co  m*/
 * @param pageContext
 *            Page context to be searched
 * @param name
 *            Name of the bean to be retrieved
 * @param scopeName
 *            Scope to be searched (page, request, session, application) or <code>null</code> to use <code>findAttribute()</code>
 *            instead
 * @return JavaBean in the specified page context
 * @throws JspException
 *             if an invalid scope name is requested
 */
public Object lookup(PageContext pageContext, String name, String scopeName) throws JspException {
    if (scopeName == null) {
        return pageContext.findAttribute(name);
    }
    try {
        return pageContext.getAttribute(name, instance.getScope(scopeName));
    } catch (JspException e) {
        throw e;
    }
}

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From source file:com.adito.core.CoreUtil.java

/**
 * Dump tile attributes to {@link System#err}.
 * /*from   ww  w  .j a  v a 2 s .  c om*/
 * @param pageContext page context from which to get tile.
 */
public static void dumpTileScope(PageContext pageContext) {
    ComponentContext compContext = (ComponentContext) pageContext
            .getAttribute(ComponentConstants.COMPONENT_CONTEXT, PageContext.REQUEST_SCOPE);
    System.err.println("Tile attributes");
    for (Iterator i = compContext.getAttributeNames(); i.hasNext();) {
        String n = (String) i.next();
        System.err.println("   " + n + " = " + compContext.getAttribute(n));
    }
}

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From source file:com.adito.core.CoreUtil.java

/**
 * @param pageContext/*from ww w .  ja va 2 s .  c  om*/
 */
public static void dumpComponentContext(PageContext pageContext) {
    ComponentContext compContext = (ComponentContext) pageContext
            .getAttribute(ComponentConstants.COMPONENT_CONTEXT, PageContext.REQUEST_SCOPE);
    if (log.isInfoEnabled())
        log.info("Component context dump");
    for (Iterator e = compContext.getAttributeNames(); e.hasNext();) {
        String n = (String) e.next();
        Object value = compContext.getAttribute(n);
        if (log.isInfoEnabled())
            log.info("   " + n + " = " + value);
    }
}

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From source file:eionet.cr.util.Util.java

/**
 *
 * @param pageContext//w ww .  j  a va2  s  .  c  o  m
 * @param objectClass
 * @return
 */
public static Object findInAnyScope(PageContext pageContext, Class objectClass) {

    if (pageContext == null || objectClass == null) {
        return null;
    }

    int[] scopes = { PageContext.APPLICATION_SCOPE, PageContext.PAGE_SCOPE, PageContext.REQUEST_SCOPE,
            PageContext.SESSION_SCOPE };
    for (int i = 0; i < scopes.length; i++) {
        Enumeration attrs = pageContext.getAttributeNamesInScope(scopes[i]);
        while (attrs != null && attrs.hasMoreElements()) {
            String name = (String) attrs.nextElement();
            Object o = pageContext.getAttribute(name, scopes[i]);
            if (o != null && objectClass.isInstance(o)) {
                return o;
            }
        }
    }

    return null;
}

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From source file:com.glaf.core.tag.TagUtils.java

/**
 * Locate and return the specified bean, from an optionally specified scope,
 * in the specified page context. If no such bean is found, return
 * <code>null</code> instead. If an exception is thrown, it will have
 * already been saved via a call to <code>saveException()</code>.
 * /*  www. j  av a  2s  . co  m*/
 * @param pageContext
 *            Page context to be searched
 * @param name
 *            Name of the bean to be retrieved
 * @param scopeName
 *            Scope to be searched (page, request, session, application) or
 *            <code>null</code> to use <code>findAttribute()</code> instead
 * @return JavaBean in the specified page context
 * @throws JspException
 *             if an invalid scope name is requested
 */
public Object lookup(PageContext pageContext, String name, String scopeName) throws JspException {
    if (scopeName == null) {
        return pageContext.findAttribute(name);
    }

    try {
        return pageContext.getAttribute(name, instance.getScope(scopeName));
    } catch (JspException e) {
        saveException(pageContext, e);
        throw e;
    }
}

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From source file:com.glaf.core.tag.TagUtils.java

/**
 * Returns the appropriate MessageResources object for the current module
 * and the given bundle./*from w  w w  . ja  va 2  s  .c o m*/
 * 
 * @param pageContext
 *            Search the context's scopes for the resources.
 * @param bundle
 *            The bundle name to look for. If this is <code>null</code>, the
 *            default bundle name is used.
 * @param checkPageScope
 *            Whether to check page scope
 * @return MessageResources The bundle's resources stored in some scope.
 * @throws JspException
 *             if the MessageResources object could not be found.
 */
public MessageResources retrieveMessageResources(PageContext pageContext, String bundle, boolean checkPageScope)
        throws JspException {
    MessageResources resources = null;

    if (bundle == null) {
        bundle = conf.get("i18n.messages_key");
    }

    if (bundle == null) {
        bundle = Globals.MESSAGES_KEY;
    }

    if (checkPageScope) {
        resources = (MessageResources) pageContext.getAttribute(bundle, PageContext.PAGE_SCOPE);
    }

    if (resources == null) {
        resources = (MessageResources) pageContext.getAttribute(bundle, PageContext.REQUEST_SCOPE);
    }

    if (resources == null) {
        resources = (MessageResources) pageContext.getAttribute(bundle, PageContext.APPLICATION_SCOPE);
    }

    if (resources == null) {
        resources = (MessageResources) pageContext.getAttribute(Globals.DEFAULT_RESOURCE_NAME,
                PageContext.APPLICATION_SCOPE);
        if (resources == null) {
            resources = PropertyMessageResourcesFactory.createFactory()
                    .createResources(Globals.DEFAULT_RESOURCE_NAME);
            pageContext.setAttribute(Globals.DEFAULT_RESOURCE_NAME, resources, PageContext.APPLICATION_SCOPE);
        }
    }

    if (resources == null) {
        JspException e = new JspException(messages.getMessage("message.bundle", bundle));

        saveException(pageContext, e);
        throw e;
    }

    return resources;
}

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From source file:de.innovationgate.wgpublisher.WGACore.java

public static WGACore retrieve(PageContext pageContext) {
    return (WGACore) pageContext.getAttribute(ATTRIB_CORE, PageContext.APPLICATION_SCOPE);
}

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From source file:org.apache.struts.taglib.TagUtils.java

/**
 * Return the form action converted into a server-relative URL.
 *//*from   w w w. j  a  v a 2  s. c o m*/
public String getActionMappingURL(String action, String module, PageContext pageContext,
        boolean contextRelative) {
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();

    String contextPath = request.getContextPath();
    StringBuffer value = new StringBuffer();

    // Avoid setting two slashes at the beginning of an action:
    //  the length of contextPath should be more than 1
    //  in case of non-root context, otherwise length==1 (the slash)
    if (contextPath.length() > 1) {
        value.append(contextPath);
    }

    ModuleConfig moduleConfig = getModuleConfig(module, pageContext);

    if ((moduleConfig != null) && (!contextRelative)) {
        value.append(moduleConfig.getPrefix());
    }

    // Use our servlet mapping, if one is specified
    String servletMapping = (String) pageContext.getAttribute(Globals.SERVLET_KEY,
            PageContext.APPLICATION_SCOPE);

    if (servletMapping != null) {
        String queryString = null;
        int question = action.indexOf("?");

        if (question >= 0) {
            queryString = action.substring(question);
        }

        String actionMapping = getActionMappingName(action);

        if (servletMapping.startsWith("*.")) {
            value.append(actionMapping);
            value.append(servletMapping.substring(1));
        } else if (servletMapping.endsWith("/*")) {
            value.append(servletMapping.substring(0, servletMapping.length() - 2));
            value.append(actionMapping);
        } else if (servletMapping.equals("/")) {
            value.append(actionMapping);
        }

        if (queryString != null) {
            value.append(queryString);
        }
    }
    // Otherwise, assume extension mapping is in use and extension is
    // already included in the action property
    else {
        if (!action.startsWith("/")) {
            value.append("/");
        }

        value.append(action);
    }

    return value.toString();
}

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