Example usage for javax.servlet.jsp PageContext REQUEST_SCOPE

Introduction

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

Prototype

int REQUEST_SCOPE

To view the source code for javax.servlet.jsp PageContext REQUEST_SCOPE.

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Document

Request scope: the named reference remains available from the ServletRequest associated with the Servlet until the current request is completed.

Usage

From source file:org.apache.tiles.jsp.context.JspUtil.java

/**
 * Returns true if forced include of the result is needed.
 *
 * @param context The page context.//w  w w  . j a  va2  s.c  o m
 * @return If <code>true</code> the include operation must be forced.
 * @since 2.0.6
 */
public static boolean isForceInclude(PageContext context) {
    Boolean retValue = (Boolean) context.getAttribute(ServletUtil.FORCE_INCLUDE_ATTRIBUTE_NAME,
            PageContext.REQUEST_SCOPE);
    return retValue != null && retValue.booleanValue();
}

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From source file:org.apache.tiles.jsp.context.JspUtil.java

/**
 * Sets the option that enables the forced include of the response.
 *
 * @param context The page context./*from www .j a va  2 s. co m*/
 * @param forceInclude If <code>true</code> the include operation must be
 * forced.
 * @since 2.0.6
 */
public static void setForceInclude(PageContext context, boolean forceInclude) {
    Boolean retValue = Boolean.valueOf(forceInclude);
    context.setAttribute(ServletUtil.FORCE_INCLUDE_ATTRIBUTE_NAME, retValue, PageContext.REQUEST_SCOPE);
}

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From source file:org.apache.tiles.jsp.context.JspUtil.java

/**
 * Sets the current container to use in web pages.
 *
 * @param context The page context to use.
 * @param key The key under which the container is stored.
 * @since 2.1.0//w  w w  .  ja  v a2  s  .  c  o  m
 */
public static void setCurrentContainer(PageContext context, String key) {
    TilesContainer container = getContainer(context, key);
    if (container != null) {
        context.setAttribute(ServletUtil.CURRENT_CONTAINER_ATTRIBUTE_NAME, container,
                PageContext.REQUEST_SCOPE);
    } else {
        throw new NoSuchContainerException("The container with the key '" + key + "' cannot be found");
    }
}

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From source file:org.apache.tiles.jsp.context.JspUtil.java

/**
 * Sets the current container to use in web pages.
 *
 * @param context The page context to use.
 * @param container The container to use as the current container.
 * @since 2.1.0/*from  ww  w . j  a  v a2s.co m*/
 */
public static void setCurrentContainer(PageContext context, TilesContainer container) {
    if (container != null) {
        context.setAttribute(ServletUtil.CURRENT_CONTAINER_ATTRIBUTE_NAME, container,
                PageContext.REQUEST_SCOPE);
    } else {
        throw new NoSuchContainerException("The container cannot be null");
    }
}

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From source file:org.apache.tiles.jsp.context.JspUtil.java

/**
 * Returns the current container that has been set, or the default one.
 *
 * @param context The page context to use.
 * @return The current Tiles container to use in web pages.
 * @since 2.1.0//  w  w  w. j a v  a2  s.c  o  m
 */
public static TilesContainer getCurrentContainer(PageContext context) {
    TilesContainer container = (TilesContainer) context
            .getAttribute(ServletUtil.CURRENT_CONTAINER_ATTRIBUTE_NAME, PageContext.REQUEST_SCOPE);
    if (container == null) {
        container = getContainer(context);
        context.setAttribute(ServletUtil.CURRENT_CONTAINER_ATTRIBUTE_NAME, container,
                PageContext.REQUEST_SCOPE);
    }

    return container;
}

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From source file:org.apache.webapp.admin.AttributeTag.java

/**
 * Render the JMX MBean attribute identified by this tag
 *
 * @exception JspException if a processing exception occurs
 *//*from   w w w  .  ja  va2  s .c om*/
public int doEndTag() throws JspException {

    // Retrieve the object name identified by our attributes
    Object bean = null;
    if (scope == null) {
        bean = pageContext.findAttribute(name);
    } else if ("page".equalsIgnoreCase(scope)) {
        bean = pageContext.getAttribute(name, PageContext.PAGE_SCOPE);
    } else if ("request".equalsIgnoreCase(scope)) {
        bean = pageContext.getAttribute(name, PageContext.REQUEST_SCOPE);
    } else if ("session".equalsIgnoreCase(scope)) {
        bean = pageContext.getAttribute(name, PageContext.SESSION_SCOPE);
    } else if ("application".equalsIgnoreCase(scope)) {
        bean = pageContext.getAttribute(name, PageContext.APPLICATION_SCOPE);
    } else {
        throw new JspException("Invalid scope value '" + scope + "'");
    }
    if (bean == null) {
        throw new JspException("No bean '" + name + "' found");
    }
    if (property != null) {
        try {
            bean = PropertyUtils.getProperty(bean, property);
        } catch (Throwable t) {
            throw new JspException("Exception retrieving property '" + property + "': " + t);
        }
        if (bean == null) {
            throw new JspException("No property '" + property + "' found");
        }
    }

    // Convert to an object name as necessary
    ObjectName oname = null;
    try {
        if (bean instanceof ObjectName) {
            oname = (ObjectName) bean;
        } else if (bean instanceof String) {
            oname = new ObjectName((String) bean);
        } else {
            oname = new ObjectName(bean.toString());
        }
    } catch (Throwable t) {
        throw new JspException("Exception creating object name for '" + bean + "': " + t);
    }

    // Acquire a reference to our MBeanServer
    MBeanServer mserver = (MBeanServer) pageContext.getAttribute("org.apache.catalina.MBeanServer",
            PageContext.APPLICATION_SCOPE);
    if (mserver == null)
        throw new JspException("MBeanServer is not available");

    // Retrieve the specified attribute from the specified MBean
    Object value = null;
    try {
        value = mserver.getAttribute(oname, attribute);
    } catch (Throwable t) {
        throw new JspException("Exception retrieving attribute '" + attribute + "'");
    }

    // Render this value to our current output writer
    if (value != null) {
        JspWriter out = pageContext.getOut();
        try {
            out.print(value);
        } catch (IOException e) {
            throw new JspException("IOException: " + e);
        }
    }

    // Evaluate the remainder of this page
    return (EVAL_PAGE);

}

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From source file:org.araneaframework.jsp.tag.basic.UiServerSideKeyboardHandlerTag.java

public static final String createHandlerToCallEvent(PageContext pageContext, String widgetId, String eventId,
        String eventParam, String precondition, List updateRegionNames) throws JspException {

    if (widgetId == null) {
        widgetId = UiWidgetUtil.getContextWidgetFullId(pageContext);
    }/*from w  w  w .j a  v  a 2s .c o  m*/
    if (eventId == null)
        eventId = "";
    if (eventParam == null)
        eventParam = "";
    if (StringUtils.isBlank(precondition))
        precondition = "return true;";

    String systemFormId = (String) UiUtil.readAttribute(pageContext, UiSystemFormTag.SYSTEM_FORM_ID_KEY,
            PageContext.REQUEST_SCOPE);

    return "function(event, elementId) { "
            + "uiStandardSubmitEvent(" + "document.forms['" + systemFormId + "'], '" + widgetId + "', '"
            + eventId + "', '" + eventParam + "', function() { " + UiStdWidgetCallUtil.getContainer(pageContext)
                    .buildWidgetCall(systemFormId, widgetId, eventId, eventParam, updateRegionNames)
            + "}, function() { " + precondition + "}); }";
}

---

From source file:org.araneaframework.jsp.tag.uilib.form.UiFormKeyboardHandlerTag.java

protected final int before(Writer out) throws Exception {
    super.before(out);
    if (StringUtils.isBlank(handler)) {
        // One of elemenId/event must be specified
        if ((elementId == null && fullElementId == null) || event == null)
            throw new JspException(
                    "You must specify handler or elementId/event for UiFormKeyboardHandlerTag (elementId="
                            + elementId + ", fullElementId=" + fullElementId + ", event=" + event + ",subscope="
                            + subscope);

        // Only one of elementId/fullElementId must be specified
        if (!(elementId == null ^ fullElementId == null))
            throw new JspException("Either elementId or fullElementId must be specified, not both.");

        // If elementId was given, translate to fullElementId
        if (fullElementId == null)
            fullElementId = elementIdToFullElementId(pageContext, elementId);
        handler = createHandlerToInvokeJavascriptEvent(fullElementId, event);
    } else {//from w  w w . j  av a2 s . c  om
        // None of the elementId/event attributes may be specified
        if (fullElementId != null || elementId != null || event != null)
            throw new JspException(
                    "You should specify either handler or event for UiFormKeyboardHandlerTag (handler="
                            + handler + ")");
    }

    // Scope here means the analogue of "scope" attribute in UiKeyboardHandlerTag
    // It must be prefixed by componentId when the surrounding systemForm's "scope" is "screen".
    String scope = (String) pageContext.getAttribute(UiFormTag.FORM_SCOPED_FULL_ID_KEY_REQUEST,
            PageContext.REQUEST_SCOPE);
    if (!StringUtils.isBlank(subscope)) {
        if (StringUtils.isBlank(scope))
            scope = subscope;
        else
            scope = scope + "." + subscope;
    }

    // Write out.
    UiKeyboardHandlerTag.writeRegisterKeypressHandlerScript(out, scope, keyCode, handler);
    return SKIP_BODY;
}

---

From source file:org.araneaframework.jsp.tag.uilib.form.UiFormKeyboardHandlerTag.java

/**
 * Given elementId relative wrt the form inside which the tag is located, appends the relevant prefix to it to obtain fullElementId.
 * @see #setElementId//from w  ww  . j ava2s  .  com
 * @param elementId may not be null!
 */
public static final String elementIdToFullElementId(PageContext pageContext, String elementId) {
    // Determine the full id.
    String fullElementId = elementId;
    String scope = (String) pageContext.getAttribute(UiFormTag.FORM_SCOPED_FULL_ID_KEY_REQUEST,
            PageContext.REQUEST_SCOPE);
    if (!StringUtils.isBlank(scope))
        fullElementId = scope + "." + elementId;
    return fullElementId;
}

---

From source file:org.araneaframework.jsp.util.UiStdWidgetCallUtil.java

public static UiWidgetContainer getContainer(PageContext pageContext) throws JspException {
    return (UiWidgetContainer) UiUtil.readAttribute(pageContext, UiWidgetContainer.REQUEST_CONTEXT_KEY,
            PageContext.REQUEST_SCOPE);
}

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