如何使用Liferay API在Elastic-search中建立父子关系搜索？

import com.liferay.portal.kernel.search.Document;
import com.liferay.portal.kernel.search.Field;
import com.liferay.portal.kernel.search.Hits;
import com.liferay.portal.kernel.search.IndexSearcherHelperUtil;
import com.liferay.portal.kernel.search.SearchContext;
import com.liferay.portal.kernel.search.SearchException;
import com.liferay.portal.kernel.search.filter.BooleanFilter;
import com.liferay.portal.kernel.search.filter.TermFilter;
import com.liferay.portal.kernel.search.generic.BooleanQueryImpl;
import com.liferay.portal.kernel.search.generic.MatchQuery;
import com.liferay.portal.kernel.search.generic.TermQueryImpl;
import com.liferay.portal.kernel.search.generic.WildcardQueryImpl;
import com.liferay.portal.kernel.util.GetterUtil;

// 创建父子文档
public void createParentChildDocuments() {
    long companyId = GetterUtil.getLong(companyIdString);
    long groupId = GetterUtil.getLong(groupIdString);
    long parentDocumentId = GetterUtil.getLong(parentDocumentIdString);
    long childDocumentId = GetterUtil.getLong(childDocumentIdString);

    Document parentDocument = createParentDocument(parentDocumentId);
    Document childDocument = createChildDocument(childDocumentId, parentDocumentId);

    try {
        IndexSearcherHelperUtil.addDocument(companyId, parentDocument, false);
        IndexSearcherHelperUtil.addDocument(companyId, childDocument, false);
    } catch (SearchException e) {
        // 处理异常
    }
}

// 执行父子关系搜索
public void searchParentChildDocuments() {
    long companyId = GetterUtil.getLong(companyIdString);
    long groupId = GetterUtil.getLong(groupIdString);
    long parentDocumentId = GetterUtil.getLong(parentDocumentIdString);

    SearchContext searchContext = new SearchContext();
    searchContext.setCompanyId(companyId);
    searchContext.setGroupIds(new long[] { groupId });

    BooleanQueryImpl booleanQuery = new BooleanQueryImpl();
    TermQueryImpl termQuery = new TermQueryImpl(Field.ENTRY_CLASS_NAME, "com.liferay.journal.model.JournalArticle");
    booleanQuery.add(termQuery, BooleanClauseOccur.MUST);

    MatchQuery matchQuery = new MatchQuery(Field.PARENT_ENTRY_CLASS_PK, parentDocumentId);
    booleanQuery.add(matchQuery, BooleanClauseOccur.MUST);

    try {
        Hits hits = IndexSearcherHelperUtil.search(searchContext, booleanQuery);
        // 处理搜索结果
    } catch (SearchException e) {
        // 处理异常
    }
}

// 创建父文档
private Document createParentDocument(long parentDocumentId) {
    Document document = new Document();

    document.addKeyword(Field.ENTRY_CLASS_NAME, "com.liferay.journal.model.JournalArticle");
    document.addKeyword(Field.ENTRY_CLASS_PK, parentDocumentId);
    document.addKeyword(Field.PARENT_ENTRY_CLASS_NAME, "com.liferay.journal.model.JournalArticle");
    document.addKeyword(Field.PARENT_ENTRY_CLASS_PK, parentDocumentId);

    // 添加其他字段

    return document;
}

// 创建子文档
private Document createChildDocument(long childDocumentId, long parentDocumentId) {
    Document document = new Document();

    document.addKeyword(Field.ENTRY_CLASS_NAME, "com.liferay.journal.model.JournalArticle");
    document.addKeyword(Field.ENTRY_CLASS_PK, childDocumentId);
    document.addKeyword(Field.PARENT_ENTRY_CLASS_NAME, "com.liferay.journal.model.JournalArticle");
    document.addKeyword(Field.PARENT_ENTRY_CLASS_PK, parentDocumentId);

    // 添加其他字段

    return document;
}