提供Dict中setFields方法实现,传入lambda设置部分值

This commit is contained in:
VampireAchao 2022-03-16 13:19:53 +08:00
parent f34a3e9c88
commit e933fb8c2b
5 changed files with 89 additions and 24 deletions

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@ -10,12 +10,15 @@ import java.math.BigDecimal;
import java.math.BigInteger; import java.math.BigInteger;
import java.sql.Time; import java.sql.Time;
import java.sql.Timestamp; import java.sql.Timestamp;
import java.util.Arrays;
import java.util.Date; import java.util.Date;
import java.util.HashMap; import java.util.HashMap;
import java.util.HashSet; import java.util.HashSet;
import java.util.LinkedHashMap; import java.util.LinkedHashMap;
import java.util.Map; import java.util.Map;
import java.util.Objects; import java.util.Objects;
import cn.hutool.core.lang.func.Func0;
import cn.hutool.core.lang.func.LambdaUtil;
/** /**
* 字典对象扩充了HashMap中的方法 * 字典对象扩充了HashMap中的方法
@ -596,4 +599,14 @@ public class Dict extends LinkedHashMap<String, Object> implements BasicTypeGett
} }
return key; return key;
} }
/**
* 通过lambda批量设置值
* @param fields lambda,不能为空
* @return this
*/
public Dict setFields(Func0<?>... fields) {
Arrays.stream(fields).forEach(f -> set(LambdaUtil.getFieldName(f), f.callWithRuntimeException()));
return this;
}
} }

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@ -29,6 +29,10 @@ public class LambdaUtil {
return _resolve(func); return _resolve(func);
} }
public static <R> SerializedLambda resolve(Func0<R> func) {
return _resolve(func);
}
/** /**
* 获取lambda表达式函数方法名称 * 获取lambda表达式函数方法名称
* *
@ -40,6 +44,10 @@ public class LambdaUtil {
return resolve(func).getImplMethodName(); return resolve(func).getImplMethodName();
} }
public static <R> String getMethodName(Func0<R> func) {
return resolve(func).getImplMethodName();
}
/** /**
* 获取lambda表达式Getter或Setter函数方法对应的字段名称规则如下 * 获取lambda表达式Getter或Setter函数方法对应的字段名称规则如下
* <ul> * <ul>
@ -66,6 +74,17 @@ public class LambdaUtil {
} }
} }
public static <R> String getFieldName(Func0<R> func) throws IllegalArgumentException {
final String methodName = getMethodName(func);
if (methodName.startsWith("get") || methodName.startsWith("set")) {
return StrUtil.removePreAndLowerFirst(methodName, 3);
} else if (methodName.startsWith("is")) {
return StrUtil.removePreAndLowerFirst(methodName, 2);
} else {
throw new IllegalArgumentException("Invalid Getter or Setter name: " + methodName);
}
}
/** /**
* 解析lambda表达式,加了缓存 * 解析lambda表达式,加了缓存
* 该缓存可能会在任意不定的时间被清除 * 该缓存可能会在任意不定的时间被清除

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@ -3,6 +3,7 @@ package cn.hutool.core.lang;
import cn.hutool.core.date.DateTime; import cn.hutool.core.date.DateTime;
import org.junit.Assert; import org.junit.Assert;
import org.junit.Test; import org.junit.Test;
import static cn.hutool.core.lang.OptTest.User;
import java.util.HashMap; import java.util.HashMap;
import java.util.Map; import java.util.Map;
@ -58,4 +59,13 @@ public class DictTest {
Assert.assertTrue(dict.isEmpty()); Assert.assertTrue(dict.isEmpty());
} }
@Test
public void setFieldsTest() {
User user = User.builder().username("hutool").nickname("Hutool").build();
Dict dict = Dict.create();
dict.setFields(user::getNickname, user::getUsername);
Assert.assertEquals("Hutool", dict.get("nickname"));
Assert.assertEquals("hutool", dict.get("username"));
}
} }

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@ -3,6 +3,7 @@ package cn.hutool.db;
import java.sql.SQLException; import java.sql.SQLException;
import java.util.Collection; import java.util.Collection;
import cn.hutool.core.lang.func.Func0;
import cn.hutool.core.map.MapUtil; import cn.hutool.core.map.MapUtil;
/** /**
@ -138,6 +139,17 @@ public class ActiveEntity extends Entity {
return (ActiveEntity) super.setFieldNames(fieldNames); return (ActiveEntity) super.setFieldNames(fieldNames);
} }
/**
* 通过lambda批量设置值
*
* @param fields lambda,不能为空
* @return this
*/
@Override
public ActiveEntity setFields(Func0<?>... fields) {
return (ActiveEntity) super.setFields(fields);
}
@Override @Override
public ActiveEntity addFieldNames(String... fieldNames) { public ActiveEntity addFieldNames(String... fieldNames) {
return (ActiveEntity) super.addFieldNames(fieldNames); return (ActiveEntity) super.addFieldNames(fieldNames);

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@ -2,6 +2,7 @@ package cn.hutool.db;
import cn.hutool.core.collection.CollectionUtil; import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.lang.Dict; import cn.hutool.core.lang.Dict;
import cn.hutool.core.lang.func.Func0;
import cn.hutool.core.util.ArrayUtil; import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.CharsetUtil; import cn.hutool.core.util.CharsetUtil;
import cn.hutool.core.util.ReflectUtil; import cn.hutool.core.util.ReflectUtil;
@ -172,6 +173,16 @@ public class Entity extends Dict {
return this; return this;
} }
/**
* 通过lambda批量设置值
* @param fields lambda,不能为空
* @return this
*/
@Override
public Entity setFields(Func0<?>... fields) {
return (Entity) super.setFields(fields);
}
/** /**
* 添加字段列表 * 添加字段列表
* *