Alter to add ResultMapToBean (#41)

sqli-core/src/main/java/io/xream/sqli/converter/ResultMapToBean.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2020 io.xream.sqli
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 io.xream.sqli.converter;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @Author Sim
+ */
+public class ResultMapToBean {
+
+    private ResultMapToBean(){}
+
+    /**
+     * not support resultMap by builder.resultWithDottedKey();
+     */
+    public static <T> T copy(Class<T> clz, Map<String, Object> map) {
+
+        if (clz == Map.class)
+            return (T) map;
+
+        List<Field> filedList = new ArrayList<>();
+
+        if (clz.getSuperclass() != Object.class) {
+            filedList.addAll(Arrays.asList(clz.getSuperclass().getDeclaredFields()));
+        }
+        filedList.addAll(Arrays.asList(clz.getDeclaredFields()));
+
+        T obj = null;
+        try {
+            obj = clz.newInstance();
+        } catch (InstantiationException | IllegalAccessException e) {
+            throw new UnsupportedOperationException(e);
+        }
+
+        try {
+            for (Field field : filedList) {
+                int modifiers = field.getModifiers();
+                if (Modifier.isStatic(modifiers))
+                    continue;
+                if (Modifier.isFinal(modifiers))
+                    continue;
+
+                field.setAccessible(true);
+
+                String key = field.getName();
+                Object v = map.get(key);
+                if (v == null)
+                    continue;
+
+                if (v instanceof Map) {
+                    Class fc = field.getType();
+                    field.set(obj, copy(fc, (Map) v));
+                }else {
+                    field.set(obj, v);
+                }
+            }
+        } catch (Exception e) {
+            throw new UnsupportedOperationException(e);
+        }
+        return obj;
+    }
+}