Hi, I have an email validation regex where the mvel matches doesn't seem to work. I have created 2 rules where test1 uses the Java String matches and test2 uses the mvel matches. Test1 works but test2 doesn't. I am using Drools 4.0.3 and JDK 1.6.0_02. *rule* "Test1" *when* // This works email : String() *eval*( !email.*matches*( "^[a-zA-Z0-9\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+(\\.[a-zA-Z0-9\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+)*(a)[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*\\.[a-zA-Z]{2,6}$") ) *then* System.out.println( "1-Invalid Email Address: " + email ); *end* *rule* "Test2" *when* // This doesn't work email : String( toString *not* *matches* "^[a-zA-Z0-9\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+(\\.[a-zA-Z0-9\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+)*(a)[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*\\.[a-zA-Z]{2,6}$") *then* System.out.println( "2-Invalid Email Address: " + email ); *end* Here's the output using email addresses x.x(a)x.com (valid) and x.xx.com (invalid): test1-Invalid Email Address: x.xx.com test2-Invalid Email Address: x.x(a)x.com test2-Invalid Email Address: x.xx.com The regex expressions are exactly the same. Am I doing something wrong here? Thanks, Len _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks a lot Edson. I had escaped characters that don't need to be escaped which works in Java but not in mvel (error: no viable alternative at character '\'). Java: "^[a-zA-Z0-9\\#]$" mvel: "^[a-zA-Z0-9#]$" Len ------------------------------ *From:* rules-users-bounces(a)lists.jboss.org [mailto: rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Edson Tirelli *Sent:* Thursday, November 15, 2007 7:47 AM *To:* Rules Users List *Subject:* Re: [rules-users] mvel regex not working??? Len, When you use code inside eval(), it is executed in the chosen dialect (default is java). So, the regexp of your first rule is parsed and executed in java and is correct. When you use code outside eval(), it is parsed by the Drools parser and the drools parser do not require the extra '\' to escape escape-codes. See the examples bellow: java: "^[a-zA-Z0-9\\!\\#\\$\\%\\&]" equivalent drools regexp: "^[a-zA-Z0-9\!\#\$\%\&]" If you change your regexp to use single '\' instead of double, it should work fine. []s Edson 2007/11/14, Carlsen, Len <len.carlsen(a)ubc.ca&gt;: Hi, I have an email validation regex where the mvel matches doesn't seem to work. I have created 2 rules where test1 uses the Java String matches and test2 uses the mvel matches. Test1 works but test2 doesn't. I am using Drools 4.0.3 and JDK 1.6.0_02. *rule* "Test1" *when* // This works email : String() *eval*( !email.* matches*( &quot;^[a-zA-Z0-9\\!\\#\\$\\%\\&amp;\\&#39;\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+(\\.[a-zA-Z0-9\\!\\#\\$\\%\\&amp;\\&#39;\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+)*(a)[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*\\.[a-zA-Z]{2,6}$&quot; ) ) *then* System.out.println( "1-Invalid Email Address: " + email ); *end* *rule* "Test2" *when* // This doesn't work email : String( toString *not* *matches* &quot;^[a-zA-Z0-9\\!\\#\\$\\%\\&amp;\\&#39;\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+(\\.[a-zA-Z0-9\\!\\#\\$\\%\\&amp;\\&#39;\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\|\\}\\~]+)*(a)[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*\\.[a-zA-Z]{2,6}$&quot; ) *then* System.out.println( "2-Invalid Email Address: " + email ); *end* Here's the output using email addresses x.x(a)x.com (valid) and x.xx.com (invalid): test1-Invalid Email Address: x.xx.com test2-Invalid Email Address: x.x(a)x.com test2-Invalid Email Address: x.xx.com The regex expressions are exactly the same. Am I doing something wrong here? Thanks, Len _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users