Java Code Examples for javax.servlet.jsp.PageContext#REQUEST_SCOPE

/**
 * Determines the scope for a given input {@code String}.
 * <p>If the {@code String} does not match 'request', 'session',
 * 'page' or 'application', the method will return {@link PageContext#PAGE_SCOPE}.
 * @param scope the {@code String} to inspect
 * @return the scope found, or {@link PageContext#PAGE_SCOPE} if no scope matched
 * @throws IllegalArgumentException if the supplied {@code scope} is {@code null}
 */
public static int getScope(String scope) {
	Assert.notNull(scope, "Scope to search for cannot be null");
	if (scope.equals(SCOPE_REQUEST)) {
		return PageContext.REQUEST_SCOPE;
	}
	else if (scope.equals(SCOPE_SESSION)) {
		return PageContext.SESSION_SCOPE;
	}
	else if (scope.equals(SCOPE_APPLICATION)) {
		return PageContext.APPLICATION_SCOPE;
	}
	else {
		return PageContext.PAGE_SCOPE;
	}
}
 

/**
 * Determines the scope for a given input {@code String}.
 * <p>If the {@code String} does not match 'request', 'session',
 * 'page' or 'application', the method will return {@link PageContext#PAGE_SCOPE}.
 * @param scope the {@code String} to inspect
 * @return the scope found, or {@link PageContext#PAGE_SCOPE} if no scope matched
 * @throws IllegalArgumentException if the supplied {@code scope} is {@code null}
 */
public static int getScope(String scope) {
	Assert.notNull(scope, "Scope to search for cannot be null");
	if (scope.equals(SCOPE_REQUEST)) {
		return PageContext.REQUEST_SCOPE;
	}
	else if (scope.equals(SCOPE_SESSION)) {
		return PageContext.SESSION_SCOPE;
	}
	else if (scope.equals(SCOPE_APPLICATION)) {
		return PageContext.APPLICATION_SCOPE;
	}
	else {
		return PageContext.PAGE_SCOPE;
	}
}
 

/**
 * Determines the scope for a given input {@code String}.
 * <p>If the {@code String} does not match 'request', 'session',
 * 'page' or 'application', the method will return {@link PageContext#PAGE_SCOPE}.
 * @param scope the {@code String} to inspect
 * @return the scope found, or {@link PageContext#PAGE_SCOPE} if no scope matched
 * @throws IllegalArgumentException if the supplied {@code scope} is {@code null}
 */
public static int getScope(String scope) {
	Assert.notNull(scope, "Scope to search for cannot be null");
	if (scope.equals(SCOPE_REQUEST)) {
		return PageContext.REQUEST_SCOPE;
	}
	else if (scope.equals(SCOPE_SESSION)) {
		return PageContext.SESSION_SCOPE;
	}
	else if (scope.equals(SCOPE_APPLICATION)) {
		return PageContext.APPLICATION_SCOPE;
	}
	else {
		return PageContext.PAGE_SCOPE;
	}
}
 

/**
 * Determines the scope for a given input {@code String}.
 * <p>If the {@code String} does not match 'request', 'session',
 * 'page' or 'application', the method will return {@link PageContext#PAGE_SCOPE}.
 * @param scope the {@code String} to inspect
 * @return the scope found, or {@link PageContext#PAGE_SCOPE} if no scope matched
 * @throws IllegalArgumentException if the supplied {@code scope} is {@code null}
 */
public static int getScope(String scope) {
	Assert.notNull(scope, "Scope to search for cannot be null");
	if (scope.equals(SCOPE_REQUEST)) {
		return PageContext.REQUEST_SCOPE;
	}
	else if (scope.equals(SCOPE_SESSION)) {
		return PageContext.SESSION_SCOPE;
	}
	else if (scope.equals(SCOPE_APPLICATION)) {
		return PageContext.APPLICATION_SCOPE;
	}
	else {
		return PageContext.PAGE_SCOPE;
	}
}
 

/**
 * Determines the scope for a given input {@code String}.
 * 
 * <p>
 * If the {@code String} does not match 'request', 'session', 'page' or 'application', the method will return
 * {@link PageContext#PAGE_SCOPE}.
 * </p>
 * 
 * @param scope
 *            the {@code String} to inspect
 * @return the scope found, or {@link PageContext#PAGE_SCOPE} if no scope matched
 *         如果 <code>scope</code> 是null,抛出 {@link NullPointerException}<br>
 *         如果 <code>scope</code> 是blank,抛出 {@link IllegalArgumentException}<br>
 */
public static int getScope(String scope){
    Validate.notBlank(scope, "scope can't be blank!");

    if (scope.equalsIgnoreCase(SCOPE_REQUEST)){
        return PageContext.REQUEST_SCOPE;
    }

    if (scope.equalsIgnoreCase(SCOPE_SESSION)){
        return PageContext.SESSION_SCOPE;
    }

    if (scope.equalsIgnoreCase(SCOPE_APPLICATION)){
        return PageContext.APPLICATION_SCOPE;
    }

    return PageContext.PAGE_SCOPE;
}
 

@Override
public void setAttribute(String name, Object value, int scope) {
  if (value == null) 
    // JSP spec doesn't allow nulls
    throw new NullPointerException("Null value not allowed");

  switch (scope) {
  case PageContext.APPLICATION_SCOPE:
    getServletContext().setAttribute(name, value);
    break;
  case PageContext.REQUEST_SCOPE:
    getRequest().setAttribute(name, value);
    break;
  case PageContext.SESSION_SCOPE:
    getSession().setAttribute(name, value);
    break;
  case PageContext.PAGE_SCOPE:
    attrs.put(name, value);
    break;
  default:
    throw new IllegalArgumentException("Illegal scope argument: " + scope);
  }
}
 

@Override
public void removeAttribute(String name, int scope) {
  switch (scope) {
  case PageContext.APPLICATION_SCOPE:
    getServletContext().removeAttribute(name);
    break;
  case PageContext.REQUEST_SCOPE:
    getRequest().removeAttribute(name);
    break;
  case PageContext.SESSION_SCOPE:
    getSession().removeAttribute(name);
    break;
  case PageContext.PAGE_SCOPE:
    attrs.remove(name);
    break;
  default:
    throw new IllegalArgumentException("Illegal scope argument: " + scope);
  }
}
 

protected static int toScopeInt(String scope)
{
    if (scope == null)
    {
        return PageContext.PAGE_SCOPE;
    }
    if (scope.equalsIgnoreCase("request"))
    {
        return PageContext.REQUEST_SCOPE;
    }
    if (scope.equalsIgnoreCase("session"))
    {
        return PageContext.SESSION_SCOPE;
    }
    if (scope.equalsIgnoreCase("application"))
    {
        return PageContext.APPLICATION_SCOPE;
    }
    if (scope.equalsIgnoreCase("page"))
    {
        return PageContext.PAGE_SCOPE;
    }
    throw new IllegalArgumentException("Unknown scope: "+scope);
}
 

/**
 * Converts the given string description of a scope to the corresponding
 * PageContext constant.
 *
 * The validity of the given scope has already been checked by the
 * appropriate TLV.
 *
 * @param scope String description of scope
 *
 * @return PageContext constant corresponding to given scope description
 *
 * taken from org.apache.taglibs.standard.tag.common.core.Util
 */
public static int getScope(String scope){
    int ret = PageContext.PAGE_SCOPE;

    if("request".equalsIgnoreCase(scope)){
        ret = PageContext.REQUEST_SCOPE;
    }else if("session".equalsIgnoreCase(scope)){
        ret = PageContext.SESSION_SCOPE;
    }else if("application".equalsIgnoreCase(scope)){
        ret = PageContext.APPLICATION_SCOPE;
    }

    return ret;
}
 

/**
 * Converts the given string description of a scope to the corresponding
 * PageContext constant.
 *
 * The validity of the given scope has already been checked by the
 * appropriate TLV.
 *
 * @param scope String description of scope
 *
 * @return PageContext constant corresponding to given scope description
 * 
 * taken from org.apache.taglibs.standard.tag.common.core.Util  
 */
public static int getScope(String scope){
    int ret = PageContext.PAGE_SCOPE;
    
    if("request".equalsIgnoreCase(scope)){
        ret = PageContext.REQUEST_SCOPE;
    }else if("session".equalsIgnoreCase(scope)){
        ret = PageContext.SESSION_SCOPE;
    }else if("application".equalsIgnoreCase(scope)){
        ret = PageContext.APPLICATION_SCOPE;
    }
    
    return ret;
}
 

/**
 * Converts the given string description of a scope to the corresponding
 * PageContext constant.
 *
 * The validity of the given scope has already been checked by the
 * appropriate TLV.
 *
 * @param scope String description of scope
 *
 * @return PageContext constant corresponding to given scope description
 * 
 * taken from org.apache.taglibs.standard.tag.common.core.Util  
 */
public static int getScope(String scope){
    int ret = PageContext.PAGE_SCOPE;
    
    if("request".equalsIgnoreCase(scope)){
        ret = PageContext.REQUEST_SCOPE;
    }else if("session".equalsIgnoreCase(scope)){
        ret = PageContext.SESSION_SCOPE;
    }else if("application".equalsIgnoreCase(scope)){
        ret = PageContext.APPLICATION_SCOPE;
    }
    
    return ret;
}
 

@Override
public Object getAttribute(String name, int scope) {
  switch (scope) {
  case PageContext.APPLICATION_SCOPE:
    return getServletContext().getAttribute(name);
  case PageContext.REQUEST_SCOPE:
    return getRequest().getAttribute(name);
  case PageContext.SESSION_SCOPE:
    return getSession().getAttribute(name);
  case PageContext.PAGE_SCOPE:
    return getAttribute(name);
  default:
    throw new IllegalArgumentException("Illegal scope argument: " + scope);
  }
}
 

@Override
public int doEndTag() throws JspException {
    Object predicateContainerObject = TagUtils.getInstance().lookup(pageContext, getPredicateContainer(), getScope());
    if (predicateContainerObject == null) {
        throw new JspException("predicateContainer cannot be null");
    }
    if (!PredicateContainer.class.isAssignableFrom(predicateContainerObject.getClass())) {
        throw new JspException("Specified predicateContainer does not correspond to a "
                + PredicateContainer.class.getSimpleName());
    }
    Object beanObject = TagUtils.getInstance().lookup(pageContext, getBean(), getScope());
    if (!PhdProgramEmailBean.class.isAssignableFrom(beanObject.getClass())) {
        throw new JspException("Specified bean does not correspond to a " + PhdProgramEmailBean.class.getSimpleName());
    }
    PredicateContainer<PhdIndividualProgramProcess> predicateContainer =
            (PredicateContainer<PhdIndividualProgramProcess>) predicateContainerObject;
    PhdProgramEmailBean bean = (PhdProgramEmailBean) beanObject;
    AndPredicate<PhdIndividualProgramProcess> searchPredicate = new AndPredicate<PhdIndividualProgramProcess>();
    searchPredicate.add(bean.getManagedPhdProgramsPredicate());
    searchPredicate.add(predicateContainer.getPredicate());

    List<PhdIndividualProgramProcess> processList = PhdIndividualProgramProcess.search(searchPredicate);

    int scope = (getScope() == null) ? PageContext.REQUEST_SCOPE : ScopeIntsMap.get(getScope());
    pageContext.setAttribute(id, processList, scope);
    return super.doEndTag();
}
 

@Override
public int doEndTag() throws JspException {
    Object predicateContainerObject = TagUtils.getInstance().lookup(pageContext, getPredicateContainer(), getScope());
    if (predicateContainerObject == null) {
        throw new JspException("predicateContainer cannot be null");
    }
    if (!PredicateContainer.class.isAssignableFrom(predicateContainerObject.getClass())) {
        throw new JspException("Specified predicateContainer does not correspond to a "
                + PredicateContainer.class.getSimpleName());
    }
    Object beanObject = TagUtils.getInstance().lookup(pageContext, getBean(), getScope());
    if (!SearchPhdIndividualProgramProcessBean.class.isAssignableFrom(beanObject.getClass())) {
        throw new JspException("Specified bean does not correspond to a "
                + SearchPhdIndividualProgramProcessBean.class.getSimpleName());
    }
    PredicateContainer<PhdIndividualProgramProcess> predicateContainer =
            (PredicateContainer<PhdIndividualProgramProcess>) predicateContainerObject;
    SearchPhdIndividualProgramProcessBean bean = (SearchPhdIndividualProgramProcessBean) beanObject;
    AndPredicate<PhdIndividualProgramProcess> searchPredicate = new AndPredicate<PhdIndividualProgramProcess>();
    searchPredicate.add(bean.getAndPredicate());
    searchPredicate.add(predicateContainer.getPredicate());

    List<PhdIndividualProgramProcess> processList = PhdIndividualProgramProcess.search(searchPredicate);

    int scope = (getScope() == null) ? PageContext.REQUEST_SCOPE : ScopeIntsMap.get(getScope());
    pageContext.setAttribute(id, processList, scope);
    return super.doEndTag();
}
 

static int getScope(final String scope) {
    if ("request".equalsIgnoreCase(scope)) {
        return PageContext.REQUEST_SCOPE;
    }
    if ("session".equalsIgnoreCase(scope)) {
        return PageContext.SESSION_SCOPE;
    }
    if ("application".equalsIgnoreCase(scope)) {
        return PageContext.APPLICATION_SCOPE;
    }
    return PageContext.PAGE_SCOPE;
}