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https://issues.apache.org/jira/browse/VELOCITY-339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Henning Schmiedehausen closed VELOCITY-339.
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> Can't controll the output flushing.
> -----------------------------------
>
> Key: VELOCITY-339
> URL: https://issues.apache.org/jira/browse/VELOCITY-339
> Project: Velocity
> Issue Type: Bug
> Components: Engine
> Affects Versions: 1.4
> Environment: Operating System: Windows XP
> Platform: PC
> Reporter: Arie
> Assigned To: Velocity-Dev List
>
> It seems that When applying a template the output is buffered before it is
> directed to the given writer. That can be a problem if the output is very big
> and should be directed to a file.
> Here is a program to demonstrate the problem:
> import java.io.*;
> import org.apache.velocity.VelocityContext;
> import org.apache.velocity.Template;
> import org.apache.velocity.app.Velocity;
> import org.apache.velocity.exception.ResourceNotFoundException;
> import org.apache.velocity.exception.ParseErrorException;
> import org.apache.velocity.exception.MethodInvocationException;
> public class Test
> {
> public static void main(String st[]) throws Exception
> {
> Obj[] objArray = new Obj[50];
> for (int i = 0; i < 50; i++)
> objArray[i] = new Obj("name_" + i);
> Velocity.init();
> VelocityContext context = new VelocityContext();
> context.put( "objArray", java.util.Arrays.asList(objArray) );
> //Template template = Velocity.getTemplate("test.vtl");
> //PrintWriter sw = new PrintWriter(new FileWriter
> ("output.txt"));
> //org.apache.velocity.io.VelocityWriter sw = new
> org.apache.velocity.io.VelocityWriter(new OutputStreamWriter(System.out), 10,
> true);
> //template.merge( context, sw );
> String myStr = "<html>\n" +
> "<body>\n" +
> "#foreach( $key in $objArray )
> \n" +
> " <li>$key.name</li>\n" +
> "#end\n" +
> "</body>\n" +
> "</html>\n";
> Writer w = new PrintWriter(new OutputStreamWriter(System.out),
> true);
> Velocity.evaluate(context, w, "my-log-tag", myStr);
> w.flush();
> //sw.close();
> }
> }
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