Lucene小练三——索引删除，恢复，更新

package org.se.lucene;

//主类
import java.io.File;
import java.io.IOException;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.util.Version;

public class lucene_index {
		private String[] ids={"1","2","3","4","5","6"};
		private String[] emails={"[e-mail]","[e-mail]","dd@@dd.org","[e-mail]","[e-mail]","[e-mail]"};
		private String[] contents={"welcometotyu","hellowboy","higirl","howareyou","googluck","badgosh"};
		private int[] attachs={1,2,3,4,5,6};
		private String[] names={"liwu","zhangsan","xiaoqinag","laona","dabao","lisi"};
		private Directory directory=null;
		
		public lucene_index()
		{
			try {
				directory=FSDirectory.open(new File("f:/lucene/index02"));
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		public void quary()
		{
			try {
				IndexReader reader=IndexReader.open(directory);
				System.out.println("numdocs"+reader.numDocs());
				System.out.println("maxDocs"+reader.maxDoc());
				System.out.println("detelemaxDocs"+reader.numDeletedDocs());
				reader.close();
			} catch (CorruptIndexException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block 
				e.printStackTrace();
			}
			
		}
		
		@SuppressWarnings("deprecation")
		public void undelete()
		{
			try {
				//回复时必须把reader的只读设为false
				IndexReader reader=IndexReader.open(directory,false);
				reader.undeleteAll();
				reader.close();
			} catch (CorruptIndexException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}
	
		//清空回收站，强制优化
		public void forceDelete()
		{
			IndexWriter writer=null;
			try {
				writer=new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_36,
						new StandardAnalyzer(Version.LUCENE_36)));
				//参数十一个选项，可以是一个query，也可以是一个term  term就是一个精确查找的值
				//此时删除的文档并未完全删除，而是存储在回收站中，可以恢复的
				writer.forceMergeDeletes();
			} catch (CorruptIndexException e) {
				e.printStackTrace();
			} catch (LockObtainFailedException e) {
				e.printStackTrace();
			} catch (IOException e) {
			    e.printStackTrace();
			}
			finally{
				if (writer!=null) {
					try {
						writer.close();
					} catch (CorruptIndexException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}
		
		public void merge()
		{
			IndexWriter writer=null;
			try {
				writer=new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_36,
						new StandardAnalyzer(Version.LUCENE_36)));
				
				writer.forceMerge(2);
			} catch (CorruptIndexException e) {
				e.printStackTrace();
			} catch (LockObtainFailedException e) {
				e.printStackTrace();
			} catch (IOException e) {
			    e.printStackTrace();
			}
			finally{
				if (writer!=null) {
					try {
						writer.close();
					} catch (CorruptIndexException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}
		
		public void delete()
		{
			IndexWriter writer=null;
			try {
				writer=new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_36,
						new StandardAnalyzer(Version.LUCENE_36)));
				//参数十一个选项，可以是一个query，也可以是一个term  term就是一个精确查找的值
				//此时删除的文档并未完全删除，而是存储在回收站中，可以恢复的
				writer.deleteDocuments(new Term("id","1"));
			} catch (CorruptIndexException e) {
				e.printStackTrace();
			} catch (LockObtainFailedException e) {
				e.printStackTrace();
			} catch (IOException e) {
			    e.printStackTrace();
			}
			finally{
				if (writer!=null) {
					try {
						writer.close();
					} catch (CorruptIndexException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}
		public void index()
		{
			   IndexWriter writer=null;
			   Document doc=null;
			   try {
				writer =new IndexWriter(directory,new IndexWriterConfig(Version.LUCENE_36, 
						   new StandardAnalyzer(Version.LUCENE_36)));
				//writer.deleteAll();
				for(int i=0;i<ids.length;i++)
				{
					doc=new Document();
			    	doc.add(new Field("id",ids[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
			    	doc.add(new Field("emails",emails[i],Field.Store.YES,Field.Index.NOT_ANALYZED));
			    	doc.add(new Field("contents",contents[i],Field.Store.YES,Field.Index.ANALYZED));
			    	doc.add(new Field("name",names[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
			    	writer.addDocument(doc); 
				}
			} catch (CorruptIndexException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (LockObtainFailedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			   finally{
				   if(writer!=null)
				   {
					  try {
						writer.close();
					} catch (CorruptIndexException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}   
				   }
			   }
		}
       //更新索引
		public void update()
		{
			/*lucene本身不支持更新
			 * 
			 * 通过删除索引然后再建立索引来更新
			 */
			  IndexWriter writer=null;
			   Document doc=null;
			   try {
				writer =new IndexWriter(directory,new IndexWriterConfig(Version.LUCENE_36, 
						   new StandardAnalyzer(Version.LUCENE_36)));
				writer.deleteAll();
				for(int i=0;i<ids.length;i++)
				{
					doc=new Document();
			    	doc.add(new Field("id",ids[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
			    	doc.add(new Field("emails",emails[i],Field.Store.YES,Field.Index.NOT_ANALYZED));
			    	doc.add(new Field("contents",contents[i],Field.Store.YES,Field.Index.ANALYZED));
			    	doc.add(new Field("name",names[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
			    	writer.updateDocument(new Term("id","1"), doc); 
				}
			} catch (CorruptIndexException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (LockObtainFailedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			   finally{
				   if(writer!=null)
				   {
					  try {
						writer.close();
					} catch (CorruptIndexException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}   
				   }
			   }	
		}
}


//测试类
package org.se.lucene;

import org.junit.Test;

public class test {

	@Test
	public void testIndex()
	{
		lucene_index l_index=new lucene_index();
		l_index.index();
    }
	@Test
	
	public void testquary()
	{
		lucene_index l_index=new lucene_index();
		l_index.quary();
	}
	@Test
	public void testDelete()
	{
		lucene_index l_index=new lucene_index();
		l_index.delete();
	}
	@Test
	public void testunDelete()
	{
		lucene_index l_index=new lucene_index();
		l_index.undelete();
	}
	@Test
	public void testForceDelete()
	{
		lucene_index l_index=new lucene_index();
		l_index.forceDelete();
	}
	@Test
	public void testmerge()
	{
		lucene_index l_index=new lucene_index();
		l_index.merge();
	}
	
	@Test
	public void upDate()
	{
		lucene_index l_index=new lucene_index();
		l_index.update();
	}
	
}