From c50a58fcaf3dfa3e83f71059ed0b6f61f1753969 Mon Sep 17 00:00:00 2001
From: cho <hljo505@eactive.co.kr>
Date: Mon, 19 Jan 2026 09:04:03 +0900
Subject: [PATCH] =?UTF-8?q?ifblank=EC=B6=94=EA=B0=80.?=
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---
 .../function/validate/ifblank.java            | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 src/main/java/com/eactive/eai/transformer/function/validate/ifblank.java

diff --git a/src/main/java/com/eactive/eai/transformer/function/validate/ifblank.java b/src/main/java/com/eactive/eai/transformer/function/validate/ifblank.java
new file mode 100644
index 0000000..47b227a
--- /dev/null
+++ b/src/main/java/com/eactive/eai/transformer/function/validate/ifblank.java
@@ -0,0 +1,49 @@
+package com.eactive.eai.transformer.function.validate;
+
+import java.util.Stack;
+
+import org.apache.commons.lang3.StringUtils;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+public class ifblank extends PostfixMathCommand {
+
+	public ifblank() {
+		numberOfParameters = 2;
+	}
+
+	public void run(Stack inStack) throws ParseException {
+
+		checkStack(inStack);
+
+		Object p1 = inStack.pop();
+		Object p2 = inStack.pop();
+
+		if ( p2 instanceof String ) {
+			String str1 = (String) p1;
+
+			if ( StringUtils.isBlank(str1) ){
+				inStack.push(p2);
+			}else {
+				inStack.push(p1);
+			}
+
+		} else {
+			throw new ParseException("Invalid parameter type, p2 is not string");
+		}
+	}
+	
+	public static void main(String[] args) throws ParseException {
+		Stack sk = new Stack<Object>();
+		
+		sk.push("default");
+		sk.push("asdf");
+		
+		new ifblank().run(sk);
+		
+		System.out.println(sk.pop());
+		
+		
+	}
+
+}