com.ejlchina.searcher.SearcherStarter Maven / Gradle / Ivy
package com.ejlchina.searcher;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Set;
import com.ejlchina.searcher.bean.DbField;
import com.ejlchina.searcher.bean.SearchBean;
import com.ejlchina.searcher.beanmap.SearchBeanMap;
import com.ejlchina.searcher.beanmap.SearchBeanMapCache;
import com.ejlchina.searcher.util.ClassScanner;
import com.ejlchina.searcher.util.StringUtils;
/***
* 检索启动器 只有再启动之后才能进行检索 一般在应用程序启动时启动检索器
*
* @author Troy.Zhou @ 2017-03-20
*
*/
public class SearcherStarter {
/**
* @param basePackages 可检索 Bean 所在的 package，可检索 Bean 是被 @SearchBean 注解的 Bean
* @return true if start successfully, else return false
*/
public boolean start(String... basePackages) {
ClassScanner classScanner = new ClassScanner();
Set> classes = classScanner.scan(basePackages);
return startWithBeanClassList(classes);
}
/**
* 关闭搜索器，释放资源
*/
public void shutdown() {
SearchBeanMapCache.sharedCache().clear();
}
protected boolean startWithBeanClassList(Set> beanClassSet) {
SearchBeanMapCache searchBeanMapCache = SearchBeanMapCache.sharedCache();
for (Class beanClass : beanClassSet) {
SearchBean searchBean = beanClass.getAnnotation(SearchBean.class);
if (searchBean == null) {
continue;
}
SearchBeanMap searchBeanMap = new SearchBeanMap(searchBean.tables(), searchBean.joinCond(),
searchBean.groupBy(), searchBean.distinct());
for (Field field : beanClass.getDeclaredFields()) {
DbField dbField = field.getAnnotation(DbField.class);
if (dbField == null) {
continue;
}
Method method = null;
String fieldName = field.getName();
Class fieldType = field.getType();
try {
method = beanClass.getMethod("set" + StringUtils.firstCharToUpperCase(fieldName), fieldType);
} catch (Exception e) {
throw new SearcherException(
"【" + beanClass.getName() + "：" + fieldName + "】被注解的属性必须要有正确的set方法！", e);
}
searchBeanMap.addFieldDbMap(fieldName, dbField.value().trim(), method, fieldType);
}
if (searchBeanMap.getFieldList().size() == 0) {
throw new SearcherException("【" + beanClass.getName() + "】" + "】没有被@DbFile注解的属性！");
}
searchBeanMapCache.addSearchBeanMap(beanClass, searchBeanMap);
}
return true;
}
}