【发布时间】:2017-10-03 20:11:51
【问题描述】:
我对 Cloudant 还很陌生,但在 DB2 上使用 SQL 开发已经有一段时间了。我遇到了一个问题,我认为我正在使用 Lucene 查询引擎和 Cloudant 索引从我的查询中返回结果,但只有三分之二的预期字段正在返回数据。不返回数据的字段是一个数组。我们的应用程序正在运行 Java,并使用 IBM 的 Bluemix 和 WebSphere Liberty Profile 执行。我已经打包了 cloudant-client-2.8.0.jar 和 cloudant-HTTP-2.8.0.jar 文件来访问 cloudant 数据库。我们有许多正在运行的查询,因此连接本身很好。
这是我访问 Cloudant API 的代码:
....
Search searchSaaSData = ServiceManagerSingleton.getInstance().getSaaSCapabilitiesDatabase().search("versioning-ddoc/versioning-indx").includeDocs(true);
SearchResult<DocTypeInfo> result = searchSaaSData.querySearchResult(this.getJsonSelector(deliverableId), DocTypeInfo.class);
....
这是 this.getJsonSelector 代码:
private String getVersioningSearch(String deliverableId) {
String query = "";
if (deliverableId != null && !deliverableId.isEmpty()) {
// Search based on deliverableId
query += "(";
query += "deliverableId:\"" + deliverableId + "\"" + ")";
}
logger.log(Level.INFO, "Search query is: " + query);
// The query is simple, will look like this:
// deliverableId:"0B439290AB5011E6BE74C84817AAB206")
return query;
}
从上面的 java 代码中可以看出,我使用 java 对象 DocTypeInfo.class 来保存从搜索返回的数据。这是课程:
public class DocTypeInfo {
private final String docType;
private final String version;
private String isPublishedForReports;
public DocTypeInfo(String docType, String version) {
this.docType = docType;
this.version = version;
}
/**
* @return the docType
*/
private String getDocType() {
return docType;
}
/**
* @return the version
*/
private String getVersion() {
return version;
}
/**
* @return the isPublishedForReports
*/
public String getIsPublishedForReports() {
return isPublishedForReports;
}
/**
* @param isPublishedForReports the isPublishedForReports to set
*/
public void setIsPublishedForReports(String isPublishedForReports) {
this.isPublishedForReports = isPublishedForReports;
}
}
我已经使用 Cloudant 仪表板设置了一个设计文档和索引,如下所示:
{
"_id": "_design/versioning-ddoc",
"_rev": "22-0e0c0ccfc2b5fe7245352da7e5b1ebd3",
"views": {},
"language": "javascript",
"indexes": {
"versioning-indx": {
"analyzer": {
"name": "perfield",
"default": "standard",
"fields": {
"deliverableId": "whitespace",
"docType": "standard",
"version": "standard",
"isPublishedForReports": "keyword"
}
},
"index": "function (doc) {
index(\"deliverableId\", doc.deliverableId, {\"store\":true, \"boost\":1.0});
index(\"docType\", doc.docType, {\"store\":true, \"boost\":1.0});
index(\"version\", doc.version, {\"store\":true, \"boost\":1.0});
if (Array.isArray(doc.publishSettings)) {
for (var i in doc.publishSettings) {
if (doc.publishSettings[i].options) {
for (var j in doc.publishSettings[i].options) {
index(\"isPublishedForReports\", doc.publishSettings[i].options[j].optionId, {\"store\":true, \"boost\":1.0});
}
}
}
}
}"
}
}
}
当我执行搜索时,会填充 docType 和 version 字段,但是 isPublishedForReports 字段始终为 null 或不返回。当我在 Cloudant 仪表板中针对索引运行查询时,我可以看到返回了 isPublishedForReports 值,但我不知道为什么它没有填充到对象中?也许我误解了这些是如何构建的?
请帮忙! -道格
【问题讨论】: