Usage

$ ./setGrailsVersion 1.3.2
$ grails
Welcome to Grails 1.3.2 - http://grails.org/
Licensed under Apache Standard License 2.0
.......

$ ./setGrailsVersion 1.2.2
$ grails
Welcome to Grails 1.2.2 - http://grails.org/
Licensed under Apache Standard License 2.0
.......

Prerequisites:

• Unzip your versions of grails side-by-side in a known directory. I use ~/grailsBase, so a valid install would be ~/grailsBase/grails-1.3.2
• Leave your GRAILS_HOME environment variable set to ~/grailsBase/grails
• Leave your PATH environment variable with an entry to ~/grailsBase/grails/bin
• Save this script along side your installs. For me, this means I save it at ~/grailsBase/setGrailsVersion.sh

Script:

#!/bin/sh

##
## Switches grails versions by changing the the symlink ~/grails to a
## ~/grails-$VERSION
##
## Author: Dan Lynn (dan@danlynn.com)
##

if [ -z "$1" ]; then
	cat <<End-of-message
Usage:
	$0 [version]

The version argument must be a valid grails installation and comes in the standard grails versioning scheme.

Examples:
	$0 1.3.2
	$0 1.2.2

End-of-message

	exit 1
fi

DIRNAME=`dirname "$0"`
NEW_GRAILS_HOME="$DIRNAME/grails-$1"

if [ ! -d $NEW_GRAILS_HOME ]; then
	echo "$NEW_GRAILS_HOME doesn't exist!" >&2
	exit 1
fi

rm "$DIRNAME/grails"
ln -s $NEW_GRAILS_HOME "$DIRNAME/grails"

Here is their javascript password validator:

if( (/\W/).test(document.passwdForm.pin1.value) || (document.passwdForm.pin1.value.length < 6) || (document.passwdForm.pin1.value.length > 8 ) )
{
    alert("Your password does not conform to the Password Policy. Please try again.");
    document.passwdForm.pin1.focus();
    return false;
}

For a feature that supposedly exists to protect my money on the web, this is just pathetic. ]]> http://danlynn.com/general/verified-by-visas-insecure-password-requirements/feed/ 0 http://danlynn.com/general/groovy-deserialization-troubles/ http://danlynn.com/general/groovy-deserialization-troubles/#comments Thu, 05 Nov 2009 18:06:47 +0000 Dan http://danlynn.com/?p=48 In a grails application, I needed to persist a complicated expression tree to the database, but I didn’t want to have Hibernate generate a database table for the information as it would greatly affect read performance (lots of joins) and I don’t need to have relational access to subsets of the tree. I decided to serialize the entire tree into a BLOB.

After creating a Hibernate userType to handle the serialization/deserialization, I ran into a ClassNotFoundException when attempting to deserialize my object.  I found out that this is due to java using the “last defined ClassLoader” when deserializing with an ObjectInputStream, which might not be the right ClassLoader in a Groovy environment (see: http://jira.codehaus.org/browse/GROOVY-1627.

The solution? Subclass ObjectInputStream to allow you to pass in a predefined ClassLoader and override the resolveClass(ObjectStream classDesc) to use this ClassLoader parameter:

public class ClassLoaderAwareObjectInputStream extends ObjectInputStream {

 private ClassLoader myClassLoader;

 public ClassLoaderAwareObjectInputStream(ClassLoader myClassLoader) throws IOException, SecurityException {
 super();
 this.myClassLoader = myClassLoader;
 }

 public ClassLoaderAwareObjectInputStream(InputStream in, ClassLoader myClassLoader) throws IOException {
 super(in);
 this.myClassLoader = myClassLoader;
 }

 @Override
 protected Class resolveClass(ObjectStreamClass desc) throws IOException,
 ClassNotFoundException {
 String name = desc.getName();
 return Class.forName(name, false, myClassLoader);
 }
}

Thanks to Satish Gunnu for the tip.

Automatic Updates automatically restarts your computer for you

Cutting those seven minutes out of the feedback loop may not seem like much, but when you consider that we average about 20 builds per day that’s significant savings, even if there were only one developer waiting on the build results each time. Next up: database versioning using liquibase.