Enjoy 3.2 release ^_^

src/main/java/com/jfinal/kit/Kv.java

@@ -0,0 +1,197 @@
+/**
+ * Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jfinal.kit;
+
+import java.util.HashMap;
+import java.util.Map;
+// import com.jfinal.json.Json;
+
+/**
+ * Kv (Key Value)
+ * 
+ * Example：
+ *    Kv para = Kv.by("id", 123);
+ *    User user = user.findFirst(getSqlPara("find", para));
+ */
+@SuppressWarnings({"serial", "rawtypes", "unchecked"})
+public class Kv extends HashMap {
+	
+	@Deprecated
+	private static final String STATE_OK = "isOk";
+	@Deprecated
+	private static final String STATE_FAIL = "isFail";
+	
+	public Kv() {
+	}
+	
+	public static Kv by(Object key, Object value) {
+		return new Kv().set(key, value);
+	}
+	
+	public static Kv create() {
+		return new Kv();
+	}
+	
+	@Deprecated
+	public static Kv ok() {
+		return new Kv().setOk();
+	}
+	
+	@Deprecated
+	public static Kv ok(Object key, Object value) {
+		return ok().set(key, value);
+	}
+	
+	@Deprecated
+	public static Kv fail() {
+		return new Kv().setFail();
+	}
+	
+	@Deprecated
+	public static Kv fail(Object key, Object value) {
+		return fail().set(key, value);
+	}
+	
+	@Deprecated
+	public Kv setOk() {
+		super.put(STATE_OK, Boolean.TRUE);
+		super.put(STATE_FAIL, Boolean.FALSE);
+		return this;
+	}
+	
+	@Deprecated
+	public Kv setFail() {
+		super.put(STATE_FAIL, Boolean.TRUE);
+		super.put(STATE_OK, Boolean.FALSE);
+		return this;
+	}
+	
+	@Deprecated
+	public boolean isOk() {
+		Boolean isOk = (Boolean)get(STATE_OK);
+		if (isOk != null) {
+			return isOk;
+		}
+		Boolean isFail = (Boolean)get(STATE_FAIL);
+		if (isFail != null) {
+			return !isFail;
+		}
+		
+		throw new IllegalStateException("调用 isOk() 之前，必须先调用 ok()、fail() 或者 setOk()、setFail() 方法");
+	}
+	
+	@Deprecated
+	public boolean isFail() {
+		Boolean isFail = (Boolean)get(STATE_FAIL);
+		if (isFail != null) {
+			return isFail;
+		}
+		Boolean isOk = (Boolean)get(STATE_OK);
+		if (isOk != null) {
+			return !isOk;
+		}
+		
+		throw new IllegalStateException("调用 isFail() 之前，必须先调用 ok()、fail() 或者 setOk()、setFail() 方法");
+	}
+	
+	public Kv set(Object key, Object value) {
+		super.put(key, value);
+		return this;
+	}
+	
+	public Kv set(Map map) {
+		super.putAll(map);
+		return this;
+	}
+	
+	public Kv set(Kv kv) {
+		super.putAll(kv);
+		return this;
+	}
+	
+	public Kv delete(Object key) {
+		super.remove(key);
+		return this;
+	}
+	
+	public <T> T getAs(Object key) {
+		return (T)get(key);
+	}
+	
+	public String getStr(Object key) {
+		Object s = get(key);
+		return s != null ? s.toString() : null;
+	}
+	
+	public Integer getInt(Object key) {
+		Number n = (Number)get(key);
+		return n != null ? n.intValue() : null;
+	}
+	
+	public Long getLong(Object key) {
+		Number n = (Number)get(key);
+		return n != null ? n.longValue() : null;
+	}
+	
+	public Number getNumber(Object key) {
+		return (Number)get(key);
+	}
+	
+	public Boolean getBoolean(Object key) {
+		return (Boolean)get(key);
+	}
+	
+	/**
+	 * key 存在，并且 value 不为 null
+	 */
+	public boolean notNull(Object key) {
+		return get(key) != null;
+	}
+	
+	/**
+	 * key 不存在，或者 key 存在但 value 为null
+	 */
+	public boolean isNull(Object key) {
+		return get(key) == null;
+	}
+	
+	/**
+	 * key 存在，并且 value 为 true，则返回 true
+	 */
+	public boolean isTrue(Object key) {
+		Object value = get(key);
+		return (value instanceof Boolean && ((Boolean)value == true));
+	}
+	
+	/**
+	 * key 存在，并且 value 为 false，则返回 true
+	 */
+	public boolean isFalse(Object key) {
+		Object value = get(key);
+		return (value instanceof Boolean && ((Boolean)value == false));
+	}
+	
+//	public String toJson() {
+//		return Json.getJson().toJson(this);
+//	}
+	
+	public boolean equals(Object kv) {
+		return kv instanceof Kv && super.equals(kv);
+	}
+}
+
+