com.alogic.lucene.context.IndexerSource Maven / Gradle / Ivy
package com.alogic.lucene.context;
import java.io.InputStream;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import com.alogic.lucene.core.Indexer;
import com.anysoft.context.Context;
import com.anysoft.context.Source;
import com.anysoft.util.Factory;
import com.anysoft.util.IOTools;
import com.anysoft.util.Properties;
import com.anysoft.util.Settings;
import com.anysoft.util.XmlTools;
import com.anysoft.util.resource.ResourceFactory;
/**
* Indexer Source
*
* @author duanyy
* @since 1.6.4.1
* @version 1.6.4.4 [20150910 duanyy]
* - 父类已经提供了current,淘汰掉
*/
public class IndexerSource extends Source{
public Context newInstance(Element e, Properties p, String attrName) {
return factory.newInstance(e,p,attrName,InnerContext.class.getName());
}
protected String getContextName(){
return "context";
}
/**
* 通过XML元素创建Context
*
* @param doc XML Element
* @param p 环境变量
* @return Context
*/
public static Context newInstance(Element doc,Properties p){
if (doc == null) return null;
return factory.newInstance(doc, p);
}
public static IndexerSource theInstance = null;
public static IndexerSource get(){
if (theInstance != null){
return theInstance;
}
synchronized (factory){
if (theInstance == null){
theInstance = (IndexerSource)newInstance(Settings.get(), new IndexerSource());
}
}
return theInstance;
}
protected static Context newInstance(Properties p,Context instance){
String configFile = p.GetValue("indexer.master",
"java:///com/alogic/lucene/context/indexer.xml#com.alogic.lucene.context.IndexerSource");
String secondaryFile = p.GetValue("indexer.secondary",
"java:///com/alogic/lucene/context/indexer.xml#com.alogic.lucene.context.IndexerSource");
ResourceFactory rm = Settings.getResourceFactory();
InputStream in = null;
try {
in = rm.load(configFile,secondaryFile, null);
Document doc = XmlTools.loadFromInputStream(in);
if (doc != null){
if (instance == null){
return newInstance(doc.getDocumentElement(),p);
}else{
instance.configure(doc.getDocumentElement(), p);
return instance;
}
}
} catch (Exception ex){
logger.error("Error occurs when load xml file,source=" + configFile, ex);
}finally {
IOTools.closeStream(in);
}
return null;
}
/**
* 工厂类
* @author duanyy
*
*/
public static class TheFactory extends Factory>{
}
public static final TheFactory factory = new TheFactory();
}
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