package cn.org.rapid_framework.struts;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
import org.apache.commons.lang.StringUtils;
import org.apache.struts.config.FormBeanConfig;
import org.apache.struts.config.ModuleConfig;
import org.apache.struts.config.impl.ModuleConfigImpl;
/**
* 动态的ModuleConfig,将name尝试作为classname装载以创建formBean配置
* @author badqiu(badqiu@gmail.com)
*/
public class DynamicModuleConfig extends ModuleConfigImpl implements ModuleConfig {
Map invalidClassName = Collections.synchronizedMap(new WeakHashMap());
public DynamicModuleConfig() {
super();
}
public DynamicModuleConfig(String prefix) {
super(prefix);
}
public FormBeanConfig findFormBeanConfig(String name) {
FormBeanConfig result = super.findFormBeanConfig(name);
if(result == null) {
addFormBeanConfigByClassName(name);
return super.findFormBeanConfig(name);
}
return result;
}
void addFormBeanConfigByClassName(String className) {
if(!isValidClassName(className)) {
return;
}
defreeze();
FormBeanConfig formBeanConfig = new FormBeanConfig();
formBeanConfig.setName(className);
formBeanConfig.setType(className);
addFormBeanConfig(formBeanConfig);
}
boolean isValidClassName(String clazzName) {
if(invalidClassName.containsKey(clazzName)) {
return false;
}
boolean isValidClassName = isValidClassName0(clazzName);
int MAX_CACHE_SIZE = 1000;
if(!isValidClassName && invalidClassName.size() < MAX_CACHE_SIZE) {
invalidClassName.put(clazzName, null);
}
return isValidClassName;
}
boolean isValidClassName0(String clazzName) {
try {
if(StringUtils.isNotBlank(clazzName)){
Class.forName(clazzName).newInstance();
return true;
}
}catch(Exception e) {
}
return false;
}
public void defreeze() {
this.configured = false;
}
}