[GROOVY-4791] SimpleTemplateEngine class has side effects

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.7.10
• Component/s: Templating
• Environment: Groovy 1.7.10, MacOS X 10.6.7
• Assignee: Unassigned
• Reporter: Oleh Sklyarenko
• Created: 22/Apr/11 06:18
• Updated: 27/Jan/13 06:43

Description

Consider the following code snippet

import groovy.text.*

def map1 = [key1: 'value1', key2: 'value2']

def template = 
"""BEGIN TEMPLATE 
key1: <%=key1%>key2: <%=key2%>
END TEMPLATE"""

def w = new SimpleTemplateEngine().createTemplate(template).make(map1).toString()
map1

Youget the following result:

Result: [key1:value1, key2:value2, out:java.io.PrintWriter@a4aad7f]

SimpleTemplateEngine class adds an odd element 'out' to the supplied map variable.