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oval

OVal is a pragmatic and extensible validation framework for any kind of Java objects (not only JavaBeans). Constraints can be declared with annotations (@NotNull, @MaxLength), POJOs or XML. Custom constraints can be expressed as custom Java classes or by using scripting languages such as JavaScript, Groovy, BeanShell, OGNL or MVEL. Besides field/property validation OVal implements Programming by Contract features by utilizing AspectJ based aspects. This for example allows runtime validation of method arguments.
http://oval.sf.net
Eclipse Public License - v 1.0
The OVal Development Team
Sebastian Thomschke Holger Riegel
aspectj using javabeans aspects runtime kind languages maxlength programming allows declared pojos features only notnull objects oval custom classes scripting javascript with groovy such besides extensible validation contract expressed constraints beanshell property framework pragmatic field arguments ognl implements java mvel method annotations example this utilizing based
Files download
File Operation
oval-1.85.jar download
oval-1.85.pom download
oval-1.85-sources.jar download
Apache Maven 
<dependency>
  <groupId>net.sf.oval</groupId>
  <artifactId>oval</artifactId>
  <version>1.85</version>
</dependency>
Gradle Groovy 
implementation 'net.sf.oval:oval:1.85'
Gradle Kotlin 
implementation("net.sf.oval:oval:1.85")
Scala SBT 
libraryDependencies += "net.sf.oval" % "oval" % "1.85"
Groovy Grape 
@Grapes(
  @Grab(group='net.sf.oval', module='oval', version='1.85')
)
Apache Ivy 
<dependency org="net.sf.oval" name="oval" rev="1.85" />
Leiningen 
[net.sf.oval/oval "1.85"]
Apache Buildr 
'net.sf.oval:oval:jar:1.85'
Dependencies

compile

|-- log4j:log4j:1.2.17

|-- org.aspectj:aspectjrt:1.8.6

|-- commons-logging:commons-logging:1.2

|-- org.slf4j:slf4j-api:1.7.12

|-- com.thoughtworks.xstream:xstream:1.4.4

|-- org.beanshell:bsh:2.0b5

|-- ognl:ognl:3.1

|-- org.jruby:jruby:1.6.5

|-- org.mozilla:rhino:1.7R5

|-- commons-jxpath:commons-jxpath:1.3

|-- javolution:javolution:5.5.1

|-- com.google.inject:guice:3.0

|-- org.springframework:spring-aop:3.2.14.RELEASE

|-- org.springframework:spring-context:3.2.14.RELEASE

|-- aopalliance:aopalliance:1.0

|-- org.codehaus.groovy:groovy-all:2.2.2

|-- org.apache.commons:commons-jexl:2.1.1

|-- org.mvel:mvel2:2.0.19

|-- com.thoughtworks.paranamer:paranamer:2.8

|-- javax.persistence:persistence-api:1.0.2

|-- net.sf.trove4j:trove4j:3.0.3

|-- javax.validation:validation-api:1.0.0.GA

|-- com.sun.phobos:jsr223-api:1.0

test

|-- junit:junit:4.12

|-- cglib:cglib-nodep:3.1