DP-5394 - Write Excel With Rich Formatting And Styles

Author: gvjoshi25

example/data/input/transactions_data.json

@@ -0,0 +1,72 @@
+[
+  {
+    "transactionId": 1001,
+    "customerName": "Alice Johnson",
+    "category": "Refund",
+    "amount": -120.5,
+    "transactionDate": "2025-01-05"
+  },
+  {
+    "transactionId": 1002,
+    "customerName": "Bob Smith",
+    "category": "Purchase",
+    "amount": 250.0,
+    "transactionDate": "2025-01-06"
+  },
+  {
+    "transactionId": 1003,
+    "customerName": "Charlie Brown",
+    "category": "Refund",
+    "amount": -75.0,
+    "transactionDate": "2025-01-07"
+  },
+  {
+    "transactionId": 1004,
+    "customerName": "Diana Prince",
+    "category": "Purchase",
+    "amount": 430.25,
+    "transactionDate": "2025-01-08"
+  },
+  {
+    "transactionId": 1005,
+    "customerName": "Ethan Hunt",
+    "category": "Refund",
+    "amount": -60.0,
+    "transactionDate": "2025-01-09"
+  },
+  {
+    "transactionId": 1006,
+    "customerName": "Fiona Lee",
+    "category": "Purchase",
+    "amount": 180.75,
+    "transactionDate": "2025-01-10"
+  },
+  {
+    "transactionId": 1007,
+    "customerName": "George Miller",
+    "category": "Refund",
+    "amount": -200.0,
+    "transactionDate": "2025-01-11"
+  },
+  {
+    "transactionId": 1008,
+    "customerName": "Hannah Kim",
+    "category": "Purchase",
+    "amount": 95.0,
+    "transactionDate": "2025-01-12"
+  },
+  {
+    "transactionId": 1009,
+    "customerName": "Ian Wright",
+    "category": "Refund",
+    "amount": -45.99,
+    "transactionDate": "2025-01-13"
+  },
+  {
+    "transactionId": 1010,
+    "customerName": "Julia Roberts",
+    "category": "Purchase",
+    "amount": 320.4,
+    "transactionDate": "2025-01-14"
+  }
+]

src/main/java/com/northconcepts/datapipeline/examples/cookbook/WriteExcelWithRichFormattingAndStyles.java

@@ -0,0 +1,46 @@
+package com.northconcepts.datapipeline.examples.cookbook;
+
+import java.io.File;
+
+import com.northconcepts.datapipeline.core.DataEndpoint;
+import com.northconcepts.datapipeline.core.DataReader;
+import com.northconcepts.datapipeline.core.FieldLocationPredicate;
+import com.northconcepts.datapipeline.excel.ExcelCellStyleDecorator;
+import com.northconcepts.datapipeline.excel.ExcelColorPalette;
+import com.northconcepts.datapipeline.excel.ExcelDocument;
+import com.northconcepts.datapipeline.excel.ExcelWriter;
+import com.northconcepts.datapipeline.job.Job;
+import com.northconcepts.datapipeline.json.JsonRecordReader;
+
+import org.apache.log4j.Logger;
+
+public class WriteExcelWithRichFormattingAndStyles {
+
+    public static final Logger log = DataEndpoint.log;
+
+    public static void main(String[] args) {
+        DataReader reader = new JsonRecordReader(new File("example/data/input/transactions_data.json"))
+                .addRecordBreak("/array/object");
+        
+        ExcelDocument document = new ExcelDocument();
+        ExcelWriter writer = new ExcelWriter(document)
+                .setSheetName("transactions")
+                .setAutofitColumns(true);
+        
+        // Add Formatting & Cell Style for Header
+        writer.addHeaderCellStyle(FieldLocationPredicate.all(), ExcelCellStyleDecorator.bold()
+                .and(ExcelCellStyleDecorator.backgroundColor(ExcelColorPalette.DARK_YELLOW))
+                .and(ExcelCellStyleDecorator.fontColor(ExcelColorPalette.LIGHT_GREEN))
+                );
+
+        // Add Formatting & Cell Style for Data
+        writer.addDataCellStyle(FieldLocationPredicate.negativeNumber(), ExcelCellStyleDecorator.fontColor(ExcelColorPalette.RED)
+                .and(ExcelCellStyleDecorator.italic()));
+        writer.addDataCellStyle(FieldLocationPredicate.evenRowIndex(), ExcelCellStyleDecorator.backgroundColor(ExcelColorPalette.GREY_25_PERCENT));
+
+        Job.run(reader, writer);
+        
+        document.save(new File("example/data/output/transactions-with-rich-formatting-and-styles.xlsx"));
+    }
+
+}