官术网_书友最值得收藏!

Query data structure 

The engine takes a query in the form of a JSON structure to output prediction.

The JSON input structure is like the following code snippet for our Recommendation Engine example:

    {
"userEntityId": "u1",
"number": 10,
"categories": ["c4", "c3"]
}

The query JSON structure is mapped via the Query class. The following piece of code shows the example of the Query Class for this engine:

   org.template.recommendation;

import java.io.Serializable;
import java.util.Collections;
import java.util.Set;

public class Query implements Serializable {
private final String userEntityId;
private final int number;
private final Set<String> categories;
private final Set<String> whitelist;
private final Set<String> blacklist;

public Query(String userEntityId, int number,
Set<String> categories, Set<String> whitelist,
Set<String> blacklist) {
this.userEntityId = userEntityId;
this.number = number;
this.categories = categories;
this.whitelist = whitelist;
this.blacklist = blacklist;
}

public String getUserEntityId() {
return userEntityId;
}

public int getNumber() {
return number;
}

public Set<String> getCategories() {
if (categories == null) return Collections.emptySet();
return categories;
}

public Set<String> getWhitelist() {
if (whitelist == null) return Collections.emptySet();
return whitelist;
}

public Set<String> getBlacklist() {
if (blacklist == null) return Collections.emptySet();
return blacklist;
}

@Override
public String toString() {
return "Query{" +
"userEntityId='" + userEntityId + ''' +
", number=" + number +
", categories=" + categories +
", whitelist=" + whitelist +
", blacklist=" + blacklist +
'}';
}
}

Note how the data structure of JSON for query is simply mapped to a class structure.

主站蜘蛛池模板: 永济市| 淄博市| 盐池县| 寻甸| 博罗县| 青岛市| 天全县| 金阳县| 深州市| 长乐市| 永康市| 易门县| 富蕴县| 临海市| 高淳县| 嵊州市| 北海市| 邵阳县| 新绛县| 嘉义县| 疏勒县| 宾阳县| 栾川县| 辽中县| 迭部县| 钟山县| 南汇区| 迁安市| 射洪县| 金山区| 德昌县| 柳河县| 革吉县| 历史| 牟定县| 平顶山市| 连城县| 且末县| 北安市| 德格县| 土默特右旗|