package com.shine.framework.DB4o.example;
import java.util.HashMap;
import java.util.Map;
import com.shine.framework.DB4o.util.DB4oMap;
public class DB4oMapExample {
/**
* @param args
*/
public static void main(String[] args) {
/**=========== 簡單對象存儲 ============*/
DB4oMap<String, Object> map = new DB4oMap<String, Object>(true);
// 添加數據
System.out.println(map.put("key1", "value1"));
System.out.println(map.put("key1", "value2"));
System.out.println(map.put("key1", "value3"));
System.out.println(map.put("key1", "value4"));
System.out.println(map.put("key2", "value2"));
System.out.println(map.put("key3", "value3"));
System.out.println(map.put("key4", "value4"));
// 檢查數據
System.out.println(map.containsKey("key1"));
System.out.println(map.containsValue("value1"));
System.out.println(map.isEmpty());
// 獲取單條數據
System.out.println(map.get("key2"));
// 刪除單條數據
System.out.println(map.remove("key1"));
System.out.println(map.remove("key4", "value4"));
// 刪除所有數據
map.removeAll("key2");
// 查詢所有數據
for (Object obj : map.getAll()) {
System.out.println(obj);
}
// 遍歷所有鍵
for (String key : map.keySet()) {
System.out.println(key);
}
// 遍歷所有值
for (Object value : map.values()) {
System.out.println(value);
}
// 遍歷所有的鍵值對
for (Map.Entry<String, Object> entry : map.entrySet()) {
System.out.println(entry.getKey() + " : " + entry.getValue());
}
// 清空所有數據
map.clear();
// 查詢總數
System.out.println(map.size());
// 釋放資源
map.destroy();
/**=========== 高級對象存儲 ============*/
DB4oMap<String, Map<String, String>> map2 = new DB4oMap<String, Map<String, String>>();
// 添加數據
Map<String, String> data1 = new HashMap<String, String>();
data1.put("data1.key1", "data1.value1");
data1.put("data1.key2", "data1.value2");
Map<String, String> data2 = new HashMap<String, String>();
data2.put("data2.key1", "data2.value1");
data2.put("data2.key2", "data2.value2");
Map<String, String> data3 = new HashMap<String, String>();
data3.put("data3.key1", "data3.value1");
Map<String, String> data4 = new HashMap<String, String>();
data4.put("data4.key1", "data4.value1");
data4.put("data4.key2", "data4.value1");
data4.put("data4.key3", "data4.value1");
map2.put("map1", data1);
map2.put("map2", data2);
map2.put("map3", data3);
map2.put("map3", data4);
// 檢查數據
System.out.println(map2.containsKey("map1"));
System.out.println(map2.containsValue(data1));
// 獲取單條數據
System.out.println(map2.get("map1"));
// 移除單條數據
System.out.println(map2.remove("map2"));
// 移除指定鍵值對
System.out.println(map2.remove("map1", data1));
// 遍歷所有鍵
for (String key : map2.keySet()) {
System.out.println(key);
}
// 遍歷所有的鍵值對
for (Map.Entry<String, Map<String, String>> entry : map2.entrySet()) {
System.out.println(entry.getKey() + " : " + entry.getValue());
}
// 遍歷所有的數據
for (Map<String, String> datas : map2.getAll()) {
for (Map.Entry<String, String> entry : datas.entrySet()) {
System.out.println(entry.getKey() + ":" + entry.getValue());
}
}
// 清空所有數據
map2.clear();
// 查詢總數
System.out.println(map2.size());
map2.destroy();
}
}
該例子實現感謝我的同事[email protected],如果大家有遇到什麼問題,可以和他交流。