Question

要求很简单。有人使用一些标签（TagA，TagB）发布JournalArticle。在其他页面（布局）上，我们有AssetPublisher端口，显示所有带有这些标签的JournalArticles（例如TagA或TagB）。问题是，如何使这个布局成为程序化的？

Answer 1

我用递归DynamicQuery解决它，享受：

public static Set<Layout> getLayoutsWithThisTags(SortedSet<String> tags) throws SystemException, PortalException {
    Set<Layout> layouts = new HashSet<Layout>();

    //build DynamicQuery that contains "assetTags" as "queryName0", see configuration of AssetPublisher
    DynamicQuery query = DynamicQueryFactoryUtil.forClass(com.liferay.portal.model.PortletPreferences.class, PortalClassLoaderUtil.getClassLoader())
            .add(PropertyFactoryUtil.forName("preferences").like("%<preference><name>queryName0</name><value>assetTags</value></preference>%"))
            .add(getTagConditions(tags));

    Set<PortletPreferences> preferences = new HashSet<PortletPreferences>(PortletPreferencesLocalServiceUtil.dynamicQuery(query));
    for (PortletPreferences portletPreferences : preferences) {
        long plid = portletPreferences.getPlid();
        layouts.add(LayoutLocalServiceUtil.getLayout(plid));
    }

    return layouts;
}

private static Criterion getTagConditions(SortedSet<String> tags) {
    //create recursive OR-Criterion that contains any of the tags
    Criterion criterion = RestrictionsFactoryUtil.or(
            PropertyFactoryUtil.forName("preferences").like("%<preference><name>queryValues0</name>%<value>" + tags.first() +"</value>%"),
            (tags.size() > 2) ? getTagConditions(tail(tags)) :
                PropertyFactoryUtil.forName("preferences").like("%<preference><name>queryValues0</name>%<value>" + tags.last() +"</value>%"));
    return criterion;
}

private static SortedSet<String> tail(SortedSet<String> tags) {
    tags.remove(tags.first());
    return tags; 
}

对于包含250页（布局）的Portal，

此代码需要12毫秒。

Answer 2

突然间我想起了这样的事情:-)

        List assetPublisherLayouts;
        List<Layout> layouts = LayoutLocalServiceUtil.getLayouts(groupId, privateLayout);
        for (Layout layout : layouts)
        {
            if(layout.getTypeSettings().contains("101_INSTANCE")) {
                assetPublisherLayouts.add(layout);
            }
        }

虽然101是资产发布者的protlet ID，但它是可实例化的..

Liferay：如何使用AssetPublisher portlet中的特定JournalArticle查找所有布局？

2 个答案: