ifblank추가.

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());
+		
+		
+	}
+
+}