orientdb：在OType.LINKLIST字段上使用“IN”將數組傳遞給查詢

Question

我正在嘗試使用SQL中的IN將Category POJO數組傳遞給查詢：

public ShareObject[] search(String name, Category[] categories) {
...
OSQLSynchQuery<ODocument> query = new OSQLSynchQuery<ODocument>("SELECT FROM ShareObject WHERE name LIKE ? AND categories IN ?");
List<ODocument> result = db.command(query).execute(name, categories);

這將返回一個空列表。 如果我將SQL更改為以下內容，我會得到一個結果：
"SELECT FROM ShareObject WHERE name LIKE ? AND categories IN [#10:0,#10:1]"

我也試過這個，沒有成功：

OSQLSynchQuery<ODocument> query = new OSQLSynchQuery<ODocument>("SELECT FROM ShareObject WHERE name LIKE ? AND categories IN ?");
List<ODocument> result = db.command(query).execute(name, new String[] { "#10:0", "#10:1" });

• 如何將數組傳遞給查詢，ID或對象？
• 我是否必須更改SQL語句？
• 這甚至可能嗎？

Answer 1

試試這段代碼：

OSQLSynchQuery<ODocument> query = new OSQLSynchQuery<ODocument>("SELECT FROM ShareObject WHERE name like ? AND categories IN (?)");
List<ODocument> result = db.command(query).execute(name,"[#10:0,#10:1]");

Answer 2

你可以試試這個：

String category="[";
Category[] categories={new Category("#11:3"),new Category("#11:0")};
for(int i=0;i<categories.length;i++){
    if(i==categories.length-1)
        category+=categories[i].getRid()+"]";
    else
        category+=categories[i].getRid()+",";
}
OSQLSynchQuery<ODocument> query = new OSQLSynchQuery<ODocument>("SELECT FROM ShareObject WHERE name like ? AND categories IN (?)");
List<ODocument> result = db.command(query).execute(name,category);