note_diary.java

大学生日程管理系统

			for(int k=0;k<index;k++){
				dates[k]=(date)s.pop();
			}
		}
		return dates;
	}
	
	static date[] getdate(int which) throws Exception{
		date[] adate;
		awhich=which;
		int num;
		
		RecordEnumeration enum=null;
			   	
				Compare1 comp=one.new Compare1();
			    Filter1 f=one.new Filter1();
				try {
					enum = note_diary.enumerateRecords(f,comp,true);
				} catch (RecordStoreNotOpenException e1) {
					// TODO 自动生成 catch 块
					e1.printStackTrace();
					return null;
				}
				num=enum.numRecords();
		          if(num>=1){
			          adate=new date[num];
			          int i=0;
				      while (enum.hasNextElement())
				      {
				         byte[] record;
						try {
							record = enum.nextRecord();
							adate[i]=decode(record);
					          i++;
						} catch (InvalidRecordIDException e) {
							// TODO 自动生成 catch 块
							e.printStackTrace();
						} catch (RecordStoreNotOpenException e) {
							// TODO 自动生成 catch 块
							e.printStackTrace();
						} catch (RecordStoreException e) {
							// TODO 自动生成 catch 块
							e.printStackTrace();
						}
				      }
				      enum.destroy();
				      return adate;
		          }
	      return null;
	}
	
	static int get_num(int year,int month ,int day){
		amonth=month;
		aday=day;
		date[] adate;
		Filter f=one.new Filter();
		RecordEnumeration enum;
		try {
			enum = note_diary.enumerateRecords(f,null,true);
		} catch (RecordStoreNotOpenException e1) {
			
			e1.printStackTrace();
			return 0;
		}
		return enum.numRecords();
	}
	
	static date[] get(int year,int month ,int day){
		amonth=month;
		aday=day;
		date[] adate;
		Filter f=one.new Filter();
		RecordEnumeration enum;
		try {
			enum = note_diary.enumerateRecords(f,null,true);
		} catch (RecordStoreNotOpenException e1) {
			
			e1.printStackTrace();
			return null;
		}
		int num=enum.numRecords();
          if(num>=1){
	          adate=new date[num];
	          int i=0;
		      while (enum.hasNextElement())
		      {
		         byte[] record;
				try {
					record = enum.nextRecord();
					try {
						adate[i]=decode(record);
					} catch (Exception e2) {
					
						e2.printStackTrace();
					}
			          i++;
				} catch (InvalidRecordIDException e) {
					
					e.printStackTrace();
				} catch (RecordStoreNotOpenException e) {
					
					e.printStackTrace();
				} catch (RecordStoreException e) {
					
					e.printStackTrace();
				}
		      }
		      enum.destroy();
		      return adate;
          }
	      return null;
		
	}
	
	static boolean delete(date adate) throws  RecordStoreException{
		date a=new date();
	   	for(int i=1;i<note_diary.getNextRecordID();i++){
	   		try{
	   			
			   	ByteArrayInputStream byteInputStream = new ByteArrayInputStream(note_diary.getRecord(i));
			   	DataInputStream dataInputStream = new DataInputStream(byteInputStream);
			   	a.setYear(dataInputStream.readInt());
			   	a.setMonth(dataInputStream.readInt());
			   	a.setDay(dataInputStream.readInt());
			   	a.setName(dataInputStream.readUTF());
			   	a.setContent(dataInputStream.readUTF());
			   	a.setWhich(dataInputStream.readInt());
			   
			
			   	if(adate.year ==a.year  && adate.month ==a.month && adate.day ==a.day &&adate.name.equals(a.name ) &&adate.content.equals(a.content ) &&adate.which ==a.which ){
			   	
					note_diary.deleteRecord(i);
					dataInputStream.close();
			         byteInputStream.close();
			         return true;
			   	}
			   
		   }catch (Exception e){
		   	e.printStackTrace();
		
		   }
	   	}
	   	return false;
		
	}
	static int find(date adate){
		date a=new date();
		int index=0;
	   	try {
			for(int i=1;i<note_diary.getNextRecordID();i++){
				try{
					
				   	ByteArrayInputStream byteInputStream = new ByteArrayInputStream(note_diary.getRecord(i));
				   	DataInputStream dataInputStream = new DataInputStream(byteInputStream);
				   	a.setYear(dataInputStream.readInt());
				   	a.setMonth(dataInputStream.readInt());
				   	a.setDay(dataInputStream.readInt());
				   	a.setName(dataInputStream.readUTF());
				   	a.setContent(dataInputStream.readUTF());
				   	a.setWhich(dataInputStream.readInt());
				   
				
				   	if(adate.year ==a.year  && adate.month ==a.month && adate.day ==a.day &&adate.name.equals(a.name ) &&adate.content.equals(a.content ) &&adate.which ==a.which ){
				   	
						index=i;
						dataInputStream.close();
				         byteInputStream.close();
				         return index;
				   	}
				   
			   }catch (Exception e){
			   	e.printStackTrace();
			
			   }
			}
		} catch (RecordStoreNotOpenException e) {
			// TODO 自动生成 catch 块
			e.printStackTrace();
		} catch (RecordStoreException e) {
			// TODO 自动生成 catch 块
			e.printStackTrace();
		}
		return index;
		
	}
	static boolean update(date adate,int which) throws  RecordStoreException, IOException{
		
	   	int index=find(adate);
	   	
	   	ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream();
        DataOutputStream dataOutputStream = new DataOutputStream(byteOutputStream);
        dataOutputStream.writeInt(adate.year);
        dataOutputStream.writeInt(adate.month);
        dataOutputStream.writeInt(adate.day);
        dataOutputStream.writeUTF(adate.name);
        dataOutputStream.writeUTF(adate.content);
        dataOutputStream.writeInt(which);
        dataOutputStream.flush();
        
        byte[] recordOut = byteOutputStream.toByteArray();
        try {
			 note_diary.setRecord(index,recordOut, 0, recordOut.length);
			 dataOutputStream.close();
				byteOutputStream.close();
			return true;
		}  catch (RecordStoreException e) {
		
			e.printStackTrace();
		}
		dataOutputStream.close();
		byteOutputStream.close();
		return false;
		
	}
	
	static boolean update(date adate,String add) throws  RecordStoreException, IOException{
		int index=find(adate);
	   	
	   	ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream();
        DataOutputStream dataOutputStream = new DataOutputStream(byteOutputStream);
        dataOutputStream.writeInt(adate.year);
        dataOutputStream.writeInt(adate.month);
        dataOutputStream.writeInt(adate.day);
        dataOutputStream.writeUTF(adate.name);
        dataOutputStream.writeUTF(adate.content+add);
        dataOutputStream.writeInt(adate.which);
        dataOutputStream.flush();
        
        byte[] recordOut = byteOutputStream.toByteArray();
        try {
			 note_diary.setRecord(index,recordOut, 0, recordOut.length);
			 dataOutputStream.close();
				byteOutputStream.close();
			return true;
		}  catch (RecordStoreException e) {
		
			e.printStackTrace();
		}
		dataOutputStream.close();
		byteOutputStream.close();
		return false;
		
	}
		
	static void delete(int year,int month,int day) throws RecordStoreException {
   	date a = new date();
   	try {
		for(int i=1;i<note_diary.getNextRecordID();i++){
			try{
			   	ByteArrayInputStream byteInputStream = new ByteArrayInputStream(note_diary.getRecord(i));
			   	DataInputStream dataInputStream = new DataInputStream(byteInputStream);
			   	a.setYear(dataInputStream.readInt());
			   	a.setMonth(dataInputStream.readInt());
			   	a.setDay(dataInputStream.readInt());
			   	a.setName(dataInputStream.readUTF());
			   	a.setContent(dataInputStream.readUTF());
			   	a.setWhich(dataInputStream.readInt());
			   	if(a.getWhich()!=2)
			   	{
			   		dataInputStream.close();
			         byteInputStream.close();
			   		continue;
			   	}
			   	if(a.getYear()>year)
			   	{
			   		dataInputStream.close();
			         byteInputStream.close();
			   		continue;
			   	}
				
				if(a.getMonth()>month){
					dataInputStream.close();
			         byteInputStream.close();
					continue;
				}
				
				if(a.getDay()>day){
					dataInputStream.close();
			         byteInputStream.close();
					continue;
				}
				note_diary.deleteRecord(i);
				dataInputStream.close();
		         byteInputStream.close();
			   
		   }catch (Exception e){
		   	
		   }
		}
	} catch (RecordStoreNotOpenException e) {
		// TODO 自动生成 catch 块
		e.printStackTrace();
	}
   }
	
	
	

}