:(

2024-04-14 12:22:45 -05:00
parent 8f30705c62
commit f1c589e653
115 changed files with 4562 additions and 70 deletions
--- a/3/Assignments/Json1/src/main/java/jason/JsonSupplier.java
+++ b/3/Assignments/Json1/src/main/java/jason/JsonSupplier.java
@@ -0,0 +1,160 @@
+package jason;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+import jakarta.json.Json;
+import jakarta.json.JsonArray;
+import jakarta.json.JsonArrayBuilder;
+import jakarta.json.JsonObject;
+import jakarta.json.JsonObjectBuilder;
+import jakarta.json.JsonReader;
+import jakarta.json.JsonValue;
+import jakarta.json.JsonWriter;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+import java.util.Scanner;
+
+public class JsonSupplier {
+    /**
+     * Creates a JsonObject by traversing the arrayList of LinkedHashMap
+     *
+     * @param suppliers ArrayList of LinkedHashMap. Each element of the
+     * arrayList is a row of suppliers table. The key of the LinkedHashMap is
+     * the attribute name and the value of the attribute Example ( One liked
+     * hash map is one row from the table) LinkedHashMap 1 : key: snumber,
+     * value: s1 key: sname, value: white key: status, value: 20 key: city,
+     * value London LinkedHashMap 2 : key: snumber, value: s2 key: sname, value:
+     * black key: status, value: 30 key: city, value Paris The value of the map
+     * @return JsonObject
+     */
+    public static JsonObject createJsonObjectForSuppliers(ArrayList< LinkedHashMap<String, String>> suppliers) {
+        JsonObjectBuilder jsonBuilder = Json.createObjectBuilder();
+        int counter = 1;
+        for (LinkedHashMap<String, String> supplier : suppliers)
+          {
+            // create an array of key-value pairs
+            JsonArrayBuilder arraySupplierBld = Json.createArrayBuilder();
+            // create each key-value pair as seperate object and add it to the array
+            Set<Map.Entry<String, String>> entrySet = supplier.entrySet();
+            for (Map.Entry<String, String> entry : entrySet)
+              {
+                arraySupplierBld.add(Json.createObjectBuilder().add(entry.getKey(),
+                        entry.getValue()).build());
+              }
+            // add supplier-array to object
+            String objectID = "+" + (counter++);
+            jsonBuilder.add(objectID, arraySupplierBld);
+          }
+
+        JsonObject allSuppliersJsonObject = jsonBuilder.build();
+        return allSuppliersJsonObject;
+    }
+
+    /**
+     * Creates a JsonObject by reading the String data in JSON format
+     *
+     * @param jsonData Json format data
+     * @return JsonObject
+     */
+    public static JsonObject createJsonObjectFromString(String jsonData) {
+        JsonReader jsonReader = Json.createReader(new StringReader(jsonData));
+        JsonObject o = jsonReader.readObject();
+        return o;
+    }
+
+    /**
+     * Creates a LinkedHashMap of 4 ENTRYies.Keys name: snumber, sname, status
+     * and city. Values of map are the parameters.
+     *
+     * @param snumber value of map
+     * @param sname value of map
+     * @param status value of map
+     * @param city value of map
+     * @return
+     */
+    public static LinkedHashMap<String, String> createMapOfSupplier(
+            String snumber,
+            String sname,
+            String status,
+            String city
+    )
+    {
+        LinkedHashMap<String, String> mapSupplier
+                = new LinkedHashMap<String, String>();
+        mapSupplier.put("snumber", snumber);
+        mapSupplier.put("sname", sname);
+        mapSupplier.put("status", status);
+        mapSupplier.put("city", city);
+
+        return mapSupplier;
+    }
+
+    public static String getSuppliersJsonObject(){
+        ArrayList< LinkedHashMap<String, String>> suppliers = new ArrayList();
+        for (int i = 1; i <= 2; ++i)
+          {
+            LinkedHashMap<String, String> oneSupplierRowOfTable
+                    = createMapOfSupplier(
+                            "s1" + i,
+                            "Johnson" + i,
+                            Integer.toString(20 + i),
+                            "london" + i);
+            suppliers.add(oneSupplierRowOfTable);
+          }
+
+        JsonObject j = createJsonObjectForSuppliers(suppliers);
+        return j.toString();
+    }
+    
+    public static void main(String a[]) {
+        ArrayList< LinkedHashMap<String, String>> suppliers = new ArrayList<>();
+        for (int i = 1; i <= 2; ++i)
+          {
+            LinkedHashMap<String, String> oneSupplierRowOfTable
+                    = createMapOfSupplier(
+                            "s1" + i,
+                            "Johnson" + i,
+                            Integer.toString(20 + i),
+                            "london" + i);
+            suppliers.add(oneSupplierRowOfTable);
+          }
+
+        JsonObject j = createJsonObjectForSuppliers(suppliers);
+
+        StringWriter strWtr = new StringWriter();
+        JsonWriter jsonWtr = Json.createWriter(strWtr);
+        jsonWtr.writeObject(j);
+        String s = strWtr.toString();
+        System.out.println(s);
+        jsonWtr.close();
+        /*
+        JSONobj.readJASONdataUsingParser(strWtr.toString());
+
+        JsonObject o = createJsonObjectFromString(strWtr.toString());
+        System.out.println("------------------------------------------------");
+        JSONobj.writeObjectModelToStream(o);
+         */
+    }
+        public static void writeJsonToTextFile(JsonObject jo) throws FileNotFoundException {
+        String jsonString = Jason.getJsonString(jo);
+        PrintWriter output = new PrintWriter(new FileOutputStream("jason.json", true));
+        output.print(jsonString);
+        output.close();
+    }
+        public static JsonObject readFileIntoJson(String fileName) throws FileNotFoundException {
+            File file = new java.io.File(fileName);
+            Scanner input = new Scanner(file);
+            String joString = "";
+            while (!input.hasNext()) {
+                joString += input.next();
+            }
+            input.close();
+            JsonObject jo = createJsonObjectFromString(joString);
+            return jo;
+        }
+}