Liferay 7.3.5GA6自定义索引搜索和ddmFieldArray

Question

我正在尝试使用SearchContext、IndexSearcherHelperUtil和所有其他东西，为Liferay 7.3.5 GA6开发一个定制的web内容搜索portlet。

我有一些不同字段的DDM结构，从我在elasticsearch索引上看到的，这些字段在嵌套文档中被索引，如下所示：

"ddmFieldArray": [
{
"ddmFieldName": "ddm__text__37702__nome_it_IT",
"ddmValueFieldName": "ddmFieldValueText_it_IT",
"ddmFieldValueText_it_IT": "Nome esempio",
"ddmFieldValueText_it_IT_String_sortable": "nome esempio"
}
,
{
"ddmFieldName": "ddm__text__37702__descrizione_breve_it_IT",
"ddmValueFieldName": "ddmFieldValueText_it_IT",
"ddmFieldValueText_it_IT": "Esempio di descrizione breve da indicizzare",
"ddmFieldValueText_it_IT_String_sortable": "esempio di descrizione breve da indicizzare"
}
]

这与我以前知道的旧方法不同，在旧方法中，自定义字段被索引为ddm__[keyword/text]__[structure_uid]__[field_name]

现在我明白了

以下是代码：

long journalArticleClassId = ClassNameLocalServiceUtil.getClassNameId(JournalArticle.class.getName());

SearchContext searchContext = new SearchContext();
searchContext.setClassTypeIds(new long[] {journalArticleClassId});
searchContext.setCompanyId(companyId);
searchContext.setStart(QueryUtil.ALL_POS);
searchContext.setEnd(QueryUtil.ALL_POS);
        
BooleanQuery query = new BooleanQueryImpl();
            
        
MatchQuery approvedQuery = new MatchQuery(Field.STATUS, String.valueOf(WorkflowConstants.STATUS_APPROVED));

query.add(approvedQuery, BooleanClauseOccur.MUST.getName());


Hits resultHits = IndexSearcherHelperUtil.search(searchContext, query);

for (Document doc: resultHits.getDocs()) {          
    doc.getFields().forEach((k, v) -> _log.debug(k)); //No ddm structure field
}

这仍然是一种进步，还是只是一种意外的行为？

有没有办法解决或扩展这个问题？

谢啦

Answer 1

“ddmFieldArray”字段是一个嵌套字段，默认情况下不会返回该字段。您必须从Elasticsearch中存储在内部“_source”字段中的文档源字段中获取它（请参见https://www.elastic.co/guide/en/elasticsearch/reference/7.9/search-fields.html )

为了在Liferay中实现这一点，您必须使用旧门户内核搜索类中不可用的一些搜索方法，您必须使用位于modules/apps/portal search中的门户搜索api模块中可用的新搜索类

这些是必须应用于代码的更改：

• 在执行搜索之前，必须将“fetchSource”标志添加到搜索中添加以下代码：

    searchRequestBuilderFactory.builder(
        searchContext
    ).fetchSource(
        true
    ).build();

• 执行搜索后，您必须从SearchContent对象中获取文档对象。此搜索响应可在search chContext中使用以下代码：

    /* Execute search */
    IndexSearcherHelperUtil.search(searchContext, query);
    
    /* Get results from search response */
    SearchResponse searchResponse = searchContext.getAttribute("search.response");
    List<SearchHit> resultHits = searchResponse.getSearchHits().getSearchHits();
    
    /* Iterate */
    for (SearchHit searchHit : resultHits)  {
        Document doc = searchHit.getDocument();
    
        ...your stuff...
    }

在以下Liferay类中，您有一些关于获取源代码和获取搜索响应的示例：

• com。利弗雷。文件图书馆搜索测验DLSearchFixture，请参阅方法searchOnlyOneSearchHit，其中设置了fetchSource（true），并从searchContext获取SearchResponse对象
• com。利弗雷。账户内部的猎犬。AccountOrganizationRetrieverImpl，其中一些搜索是使用SearchRequest和SearchResponse完成的
• com。利弗雷。资产内部的util。使用searchRequestBuilderFactory的AssetPerimpl

我还实现了一个groovy脚本示例，您可以从以下位置执行它：控制面板=

import com.liferay.registry.*;
import com.liferay.portal.kernel.search.*;
import com.liferay.portal.kernel.search.generic.*;
import com.liferay.portal.search.legacy.searcher.SearchRequestBuilderFactory;
import com.liferay.portal.search.searcher.SearchResponse;
import com.liferay.portal.search.hits.SearchHit;
import com.liferay.portal.search.document.Document;

/* Get SearchRequestBuilderFactory reference using RegistryUtil, because we cannot use "@Reference" in a groovy script */
Registry registry = RegistryUtil.getRegistry();
SearchRequestBuilderFactory searchRequestBuilderFactory = registry.getService(registry.getServiceReference(SearchRequestBuilderFactory.class.getName()));

/* Create SearchContext */
SearchContext searchContext = new SearchContext();
searchContext.setCompanyId(com.liferay.portal.kernel.util.PortalUtil.getCompany(actionRequest).getCompanyId());
searchContext.setStart(-1);
searchContext.setEnd(-1);

/* Line to fetch stored source of documents */
searchRequestBuilderFactory.builder(
    searchContext
).fetchSource(
    true
).build();

/* Get journal articles that are approved (status = 0) */
MatchQuery approvedQuery = new MatchQuery(Field.STATUS, String.valueOf(0));
MatchQuery journalArticleQuery = new MatchQuery("entryClassName", com.liferay.journal.model.JournalArticle.class.getName());

BooleanQuery query = new BooleanQueryImpl();
query.add(approvedQuery, BooleanClauseOccur.MUST.getName());
query.add(journalArticleQuery, BooleanClauseOccur.MUST.getName());

/* Execute search */
IndexSearcherHelperUtil.search(searchContext, query);

/* Get results from search response */
SearchResponse searchResponse = searchContext.getAttribute("search.response");
List<SearchHit> resultHits = searchResponse.getSearchHits().getSearchHits();

/* Iterate */
for (SearchHit searchHit : resultHits)  {
    Document doc = searchHit.getDocument();
    out.println("entryClassPK: " + doc.getValue("entryClassPK"));
    out.println("ddmFieldArray: " + doc.getValues("ddmFieldArray"));
    out.println("");
}

在代码中，应该用“@Reference”注释替换RegistryUtil用法。

如果你对我的例子有任何问题，请告诉我。