JoGet: Bean Shell Create Json

JoGet: Bean Shell Create Json

วิธีดีที่สุดในการให้ข้อมูลจำนวนมากให้ javascript คือรูปแบบ json ไม่เว้นแม้แต่ใน JoGet เพราะถึงแม้จะสามารถดึงข้อมูลจาก input หรือ grid ได้ แต่มันจะถูกบันทึกลง database ไปด้วยแถมดูรก

วิธีที่ดีอีกวิธีคือให้ beanshell ใน section ดึงข้อมูลจาก query แล้วแสดงออกมาใน input ตัวเดียว

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.form.service.FormUtil;
import org.joget.commons.util.LogUtil;
import org.json.simple.JSONObject;

public FormRowSet load(Element element, String username, FormData formData) {

 FormRowSet rows = new FormRowSet();

 Connection con = null;
 try {
  DataSource ds = (DataSource) AppUtil.getApplicationContext().getBean("setupDataSource");
  con = ds.getConnection();

  sql = "SELECT appId, appVersion, name FROM jwdb.app_app WHERE published = 1;";
  //LogUtil.info("Bean Shell Create Json", "sql = " + sql);

  if (!con.isClosed()) {
   PreparedStatement stmt = con.prepareStatement(sql);
   ResultSet rs = stmt.executeQuery();

   /* create json */
   JSONObject json = new JSONObject();
   while (rs.next()) {
    JSONObject item = new JSONObject();

    item.put("appVersion", rs.getObject("appVersion"));
    item.put("name", rs.getObject("name"));

    json.put(rs.getObject("appId"), item);
   }

   /* add json to input */
   FormRow row = new FormRow();
   rows.add(row);
   row.put("json", json.toString());
  }

 } catch (Exception e) {
  LogUtil.error(getClassName(), e, "Bean Shell Create Json");
 } finally {
  try {
   if (con != null) {
    con.close();
   }
  } catch (SQLException e) {}
 }

 return rows;
}

return load(element, primaryKey, formData);

ตัวอย่างฟอร์ม

{
    "className": "org.joget.apps.form.model.Form",
    "properties": {
        "noPermissionMessage": "",
        "loadBinder": {
            "className": "org.joget.apps.form.lib.WorkflowFormBinder",
            "properties": {}
        },
        "name": "Bean Shell Create Json",
        "description": "",
        "postProcessorRunOn": "both",
        "permission": {
            "className": "",
            "properties": {}
        },
        "id": "BeanShellCreateJson",
        "postProcessor": {
            "className": "",
            "properties": {}
        },
        "storeBinder": {
            "className": "org.joget.apps.form.lib.WorkflowFormBinder",
            "properties": {}
        },
        "tableName": "prototypes"
    },
    "elements": [
        {
            "elements": [
                {
                    "elements": [
                        {
                            "className": "org.joget.apps.form.lib.TextArea",
                            "properties": {
                                "readonly": "",
                                "validator": {
                                    "className": "",
                                    "properties": {}
                                },
                                "workflowVariable": "",
                                "id": "json",
                                "label": "JSON",
                                "placeholder": "",
                                "rows": "10",
                                "value": "",
                                "cols": "100",
                                "readonlyLabel": ""
                            }
                        }
                    ],
                    "className": "org.joget.apps.form.model.Column",
                    "properties": {
                        "width": "100%"
                    }
                }
            ],
            "className": "org.joget.apps.form.model.Section",
            "properties": {
                "readonly": "",
                "loadBinder": {
                    "className": "org.joget.apps.form.lib.BeanShellFormBinder",
                    "properties": {
                        "useAjax": "",
                        "cacheIdlePause": "120",
                        "cacheInterval": "",
                        "script": "import java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport javax.sql.DataSource;\nimport org.joget.apps.app.service.AppUtil;\nimport org.joget.apps.form.model.Element;\nimport org.joget.apps.form.model.FormData;\nimport org.joget.apps.form.model.FormRow;\nimport org.joget.apps.form.model.FormRowSet;\nimport org.joget.apps.form.service.FormUtil;\nimport org.joget.commons.util.LogUtil;\nimport org.json.simple.JSONObject;\n\npublic FormRowSet load(Element element, String username, FormData formData) {\n\n FormRowSet rows = new FormRowSet();\n\n Connection con = null;\n try {\n  DataSource ds = (DataSource) AppUtil.getApplicationContext().getBean(\"setupDataSource\");\n  con = ds.getConnection();\n\n  sql = \"SELECT appId, appVersion, name FROM jwdb.app_app WHERE published = 1;\";\n  //LogUtil.info(\"Bean Shell Create Json\", \"sql = \" + sql);\n\n  if (!con.isClosed()) {\n   PreparedStatement stmt = con.prepareStatement(sql);\n   ResultSet rs = stmt.executeQuery();\n\n   /* create json */\n   JSONObject json = new JSONObject();\n   while (rs.next()) {\n    JSONObject item = new JSONObject();\n\n    item.put(\"appVersion\", rs.getObject(\"appVersion\"));\n    item.put(\"name\", rs.getObject(\"name\"));\n\n    json.put(rs.getObject(\"appId\"), item);\n   }\n\n   /* add json to input */\n   FormRow row = new FormRow();\n   rows.add(row);\n   row.put(\"json\", json.toString());\n  }\n\n } catch (Exception e) {\n  LogUtil.error(getClassName(), e, \"Bean Shell Create Json\");\n } finally {\n  try {\n   if (con != null) {\n    con.close();\n   }\n  } catch (SQLException e) {}\n }\n\n return rows;\n}\n\nreturn load(element, primaryKey, formData);"
                    }
                },
                "permissionReadonly": "",
                "permission": {
                    "className": "",
                    "properties": {}
                },
                "comment": "",
                "id": "section1",
                "label": "Bean Shell Create Json",
                "storeBinder": {
                    "className": "",
                    "properties": {}
                },
                "readonlyLabel": ""
            }
        }
    ]
}

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