// Copyright 2006 Google Inc. All Rights Reserved.
package org.apache.struts2.impl;
import java.util.HashMap;
import java.util.Map;
import com.opensymphony.xwork2.ObjectFactory;
import com.opensymphony.xwork2.Result;
import com.opensymphony.xwork2.config.ConfigurationException;
import com.opensymphony.xwork2.config.entities.InterceptorConfig;
import com.opensymphony.xwork2.config.entities.ResultConfig;
import com.opensymphony.xwork2.interceptor.Interceptor;
import com.opensymphony.xwork2.util.OgnlUtil;
public class StrutsObjectFactory extends ObjectFactory {
public Interceptor buildInterceptor(InterceptorConfig interceptorConfig, Map refParams)
throws ConfigurationException {
String className = interceptorConfig.getClassName();
Map<String, String> params = new HashMap<String, String>();
Map typeParams = interceptorConfig.getParams();
if (typeParams != null && !typeParams.isEmpty())
params.putAll(typeParams);
if (refParams != null && !refParams.isEmpty())
params.putAll(refParams);
params.putAll(refParams);
try {
// interceptor instances are long-lived and used across user sessions, so don't try to pass in any extra
// context
Object o = buildBean(className, null);
OgnlUtil.setProperties(params, o);
if (o instanceof Interceptor) {
Interceptor interceptor = (Interceptor) o;
interceptor.init();
return interceptor;
}
if (o instanceof org.apache.struts2.spi.Interceptor)
return new InterceptorAdapter((org.apache.struts2.spi.Interceptor) o);
throw new ConfigurationException(
"Class [" + className + "] does not implement Interceptor", interceptorConfig);
} catch (InstantiationException e) {
throw new ConfigurationException(
"Unable to instantiate an instance of Interceptor class [" + className + "].",
e, interceptorConfig);
} catch (IllegalAccessException e) {
throw new ConfigurationException(
"IllegalAccessException while attempting to instantiate an instance of Interceptor class ["
+ className + "].",
e, interceptorConfig);
} catch (Exception e) {
throw new ConfigurationException(
"Caught Exception while registering Interceptor class " + className,
e, interceptorConfig);
} catch (NoClassDefFoundError e) {
throw new ConfigurationException(
"Could not load class " + className
+ ". Perhaps it exists but certain dependencies are not available?",
e, interceptorConfig);
}
}
public Result buildResult(ResultConfig resultConfig, Map extraContext) throws Exception {
String resultClassName = resultConfig.getClassName();
if (resultClassName == null)
return null;
Object result = buildBean(resultClassName, extraContext);
OgnlUtil.setProperties(resultConfig.getParams(), result, extraContext);
if (result instanceof Result)
return (Result) result;
if (result instanceof org.apache.struts2.spi.Result)
return new ResultAdapter((org.apache.struts2.spi.Result) result);
throw new ConfigurationException(result.getClass().getName() + " does not implement Result.");
}
}