124 lines
4.4 KiB
Java
124 lines
4.4 KiB
Java
package tqq9.lc123.cloud.app.api.utils;
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import com.fasterxml.jackson.databind.JsonNode;
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import tqq9.lc123.cloud.app.api.utils.mapping.GyDeliveryMapping;
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import java.util.*;
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/**
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* 把 delivery 节点全部拍扁
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*/
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public final class GyDeliverySyncMappingUtil {
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/* 1. 缓存：key = 全路径，value = 值或List<Map> */
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private static final Map<String, Object> CACHE = new HashMap<>();
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/* 2. 入口 */
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public static void parse(JsonNode delivery) {
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CACHE.clear();
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flatten(null, delivery);
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}
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/* 3. 统一取值 */
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public static Object get(String outerKey) {
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String path = GyDeliveryMapping.FIELD_MAP.get(outerKey);
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if (path == null) return null;
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/* 3.1 整段数组或对象 */
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if (isWholeBlock(path)) return CACHE.get(path);
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/* 3.2 数组模板：details[].field 或 details[1].field */
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if (path.contains("[") && path.contains("].")) {
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return handleArrayTemplate(path);
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}
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/* 3.3 普通根字段 */
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return CACHE.get(path);
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}
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/* 4. 拍扁：对象展开；数组既存整段，又明细到 CACHE */
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private static void flatten(String parent, JsonNode node) {
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if (node.isObject()) {
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Iterator<Map.Entry<String, JsonNode>> it = node.fields();
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while (it.hasNext()) {
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Map.Entry<String, JsonNode> e = it.next();
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flatten(join(parent, e.getKey()), e.getValue());
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}
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} else if (node.isArray()) {
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List<Map<String, Object>> list = new ArrayList<>();
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for (int i = 0; i < node.size(); i++) {
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JsonNode child = node.get(i);
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Map<String, Object> row = new LinkedHashMap<>();
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Iterator<Map.Entry<String, JsonNode>> it = child.fields();
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while (it.hasNext()) {
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Map.Entry<String, JsonNode> f = it.next();
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String key = f.getKey();
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Object val = convert(f.getValue());
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row.put(key, val);
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/* 字段别名：item_code -> material */
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String alias = GyDeliveryMapping.ALIAS_MAP.get(key);
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if (alias != null) row.put(alias, val);
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}
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list.add(row);
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/* 明细拍扁：details[0].xxx */
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String idxKey = parent + "[" + i + "]";
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for (Map.Entry<String, Object> entry : row.entrySet()) {
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CACHE.put(idxKey + "." + entry.getKey(), entry.getValue());
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}
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}
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CACHE.put(parent, list); // 整段也保留
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} else {
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CACHE.put(parent, convert(node));
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}
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}
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/* 5. 数组模板处理 */
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private static Object handleArrayTemplate(String path) {
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int dot = path.indexOf("].");
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String listPart = path.substring(0, dot + 1);
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String field = path.substring(dot + 2);
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String listKey = listPart.substring(0, listPart.indexOf("["));
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Object block = CACHE.get(listKey);
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if (!(block instanceof List)) return null;
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List<Map<String, Object>> list = (List<Map<String, Object>>) block;
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String idxPart = listPart.substring(listPart.indexOf("[") + 1, listPart.length() - 1);
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/* 5.1 通配：details[].field */
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if (idxPart.isEmpty()) {
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List<Object> res = new ArrayList<>(list.size());
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for (Map<String, Object> row : list) {
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res.add(row.get(field));
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}
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return res;
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}
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/* 5.2 单条：details[1].field */
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int i = Integer.parseInt(idxPart);
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return i < 0 || i >= list.size() ? null : list.get(i).get(field);
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}
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/* 6. 工具方法 */
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private static boolean isWholeBlock(String path) {
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return path.equals("details") || path.equals("payments")
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|| path.equals("invoices") || path.equals("tags")
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|| path.equals("stock_location")
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|| path.equals("delivery_statusInfo")
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|| path.equals("store_info");
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}
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private static String join(String parent, String key) {
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return parent == null ? key : parent + "." + key;
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}
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private static Object convert(JsonNode n) {
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if (n.isTextual()) return n.asText();
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if (n.isNumber()) return n.isFloatingPointNumber() ? n.asDouble() : n.asLong();
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if (n.isBoolean()) return n.asBoolean();
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return n.asText();
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}
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}
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