org.apache.bval.jsr303.ApacheValidationProvider Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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*/
package org.apache.bval.jsr303;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.validation.Configuration;
import javax.validation.ValidationException;
import javax.validation.ValidatorFactory;
import javax.validation.spi.BootstrapState;
import javax.validation.spi.ConfigurationState;
import javax.validation.spi.ValidationProvider;
import org.apache.commons.lang3.ClassUtils;
/**
* Description: Implementation of {@link ValidationProvider} for jsr303
* implementation of the apache-validation framework.
*
*
* User: roman.stumm
* Date: 29.10.2008
* Time: 14:45:41
*/
public class ApacheValidationProvider implements ValidationProvider {
/**
* Learn whether a particular builder class is suitable for this
* {@link ValidationProvider}.
*
* @param builderClass
* @return boolean suitability
*/
public boolean isSuitable(Class> builderClass) {
return ApacheValidatorConfiguration.class.equals(builderClass);
}
/**
* {@inheritDoc}
*/
public ApacheValidatorConfiguration createSpecializedConfiguration(BootstrapState state) {
return new ConfigurationImpl(state, this);
}
/**
* {@inheritDoc}
*/
public Configuration createGenericConfiguration(BootstrapState state) {
return new ConfigurationImpl(state, null);
}
/**
* {@inheritDoc}
*
* @throws javax.validation.ValidationException
* if the ValidatorFactory cannot be built
*/
public ValidatorFactory buildValidatorFactory(final ConfigurationState configuration) {
final Class validatorFactoryClass;
try {
String validatorFactoryClassname =
configuration.getProperties().get(ApacheValidatorConfiguration.Properties.VALIDATOR_FACTORY_CLASSNAME);
if (validatorFactoryClassname == null) {
validatorFactoryClass = ApacheValidatorFactory.class;
} else {
validatorFactoryClass =
ClassUtils.getClass(validatorFactoryClassname).asSubclass(ValidatorFactory.class);
}
} catch (ValidationException ex) {
throw ex;
} catch (Exception ex) {
throw new ValidationException("error building ValidatorFactory", ex);
}
// FIXME 2011-03-27 jw:
// Should not use privileged action, but to avoid breaking things
// doing it here like the former version of this class did.
//
// The privileged action should be applied by the ValidatorFactory
// itself, if required.
// No privileges should be required to access the constructor,
// because the classloader of ApacheValidationProvider will always
// be an ancestor of the loader of validatorFactoryClass.
return (System.getSecurityManager() == null)
? instantiateValidatorFactory(validatorFactoryClass, configuration) : AccessController
.doPrivileged(new PrivilegedAction() {
public ValidatorFactory run() {
return instantiateValidatorFactory(validatorFactoryClass, configuration);
}
});
}
private static ValidatorFactory instantiateValidatorFactory(
final Class validatorFactoryClass, final ConfigurationState configuration) {
try {
return validatorFactoryClass.getConstructor(ConfigurationState.class).newInstance(configuration);
} catch (final Exception ex) {
throw new ValidationException("Cannot instantiate : " + validatorFactoryClass, ex);
}
}
}