/* * SysParamter.java * * Created on 2003年11月21日, 上午10:12 */package handenglish;import java.util.*;import java.io.*;import javax.microedition.rms.*;/* * @author  Administrator */public class SysParam {    public  long lastUpdate;    public  String storeName;    public  int storeNo;    public  int storeVolume;    public  long msgPostDate;    public  boolean isRead;    public  String msg;    public int curUnit;    // private boolean loaded;    private Hashtable m_diffIndex;    private static SysParam instance;    public static int MAX_DIFF_NUMBER=50; //難記單詞庫最大存儲個數    /** Creates a new instance of SysParamter */    private SysParam() {        m_diffIndex=new Hashtable();        getParameter();    }        public static synchronized SysParam getInstance() {        if ( instance == null )            instance = new SysParam();        return instance;    }  /*  public long getLastUpdate() {        return lastUpdate;    }    public String getStoreName() {        return storeName;    }       public int getStoreNo() {        return storeNo;    }    public int getStoreVolume() {        return storeVolume;    }   */    private void getParameter() {        DbApi systemDb = new DbApi( "systemdb" );        RecordEnumeration tempEnumRecord = systemDb.getAllRecord();        if(tempEnumRecord.hasNextElement()) {            try{                byte[] tempRecord = tempEnumRecord.nextRecord();                ByteArrayInputStream tempDb = new ByteArrayInputStream(tempRecord);                DataInputStream tempSysDb=new DataInputStream(tempDb);                lastUpdate = tempSysDb.readLong();                storeNo = tempSysDb.readInt();                storeName=tempSysDb.readUTF();                storeVolume = tempSysDb.readInt();                isRead = tempSysDb.readBoolean();                msgPostDate = tempSysDb.readLong();                msg = tempSysDb.readUTF();                curUnit = tempSysDb.readInt();              //  if ( curUnit <= 0 ) curUnit =1;            }catch(Exception e){}        }        else {            lastUpdate = 0;            storeName = "";            storeNo = -1;            storeVolume = -1;            isRead = true;            msg ="";            msgPostDate = 0;            curUnit = 1;        }        //  loaded = true;        boolean close=systemDb.closeDatabase();    }      /*  public void setLastUpdate(long newDate) {        lastUpdate = newDate;    }    public void setStoreName( String newName ) {        storeName = newName;    }       public void setStoreNo( int newNo ) {        storeNo = newNo;    }    public void setStoreVolume( int newVol ) {        storeVolume = newVol;    } */    public void  setParameter() {        DbApi systemDb = new DbApi( "systemdb" );        systemDb.deleteAll();        ByteArrayOutputStream tempBos=new ByteArrayOutputStream();        DataOutputStream tempDos=new DataOutputStream(tempBos);        try {            tempDos.writeLong(lastUpdate);            tempDos.writeInt(storeNo);            tempDos.writeUTF(storeName);            tempDos.writeInt(storeVolume);            tempDos.writeBoolean( isRead );            tempDos.writeLong( msgPostDate );            tempDos.writeUTF( msg );            tempDos.writeInt( curUnit );            byte[] tempB=tempBos.toByteArray();            tempBos.close();            systemDb.addDatabase(tempB);        }        catch ( Exception e ){}        finally {            systemDb.closeDatabase();        }    }        public void getUnit(int nowUnitId,int nowNup,Vector nowVector){        int totalNumber=0;        DbApi dbApi=new DbApi( "wordsdb" );        try{            byte[] tData = new byte[100];            int tId,tLen;            RecordEnumeration tempEnumRecord = dbApi.getAllRecord();            ByteArrayInputStream tempDb = new ByteArrayInputStream(tData);            DataInputStream tempWordsDb=new DataInputStream(tempDb);                        while(tempEnumRecord.hasNextElement()) {                tId = tempEnumRecord.nextRecordId();                //byte[] tempRecord = tempEnumRecord.nextRecord();                if(totalNumber>=nowUnitId*20&&totalNumber<=nowUnitId*20+19){                    tLen = dbApi.myRecordStore.getRecordSize( tId );                    if ( tLen > 100 )                        tData = new byte[tLen+40];                    dbApi.myRecordStore.getRecord( tId,tData,0 );                    tempDb.reset();                    String tempS;                    tempS=tempWordsDb.readUTF();                    nowVector.addElement(tempS);                    tempS=tempWordsDb.readUTF();                    nowVector.addElement(tempS);                    tempS=tempWordsDb.readUTF();                    nowVector.addElement(tempS);                    tempDb.close();                }                else if(totalNumber>=nowUnitId*20+20){                    break;                }                totalNumber++;            }        }catch(Exception e) {}        finally {            dbApi.closeDatabase();        }    }    public boolean haveDiffSpace() {        DbApi m_diffDb=new DbApi( "diffdb" );        if(m_diffDb.getRecordNum()==MAX_DIFF_NUMBER){            boolean close=m_diffDb.closeDatabase();            return false;        }        else{            boolean close=m_diffDb.closeDatabase();            return true;        }    }    public void getDiffUnit(Vector nowVector) {        DbApi m_diffDb=new DbApi( "diffdb" );        try{            byte[] tData = new byte[100];            int tId,tLen;            RecordEnumeration tempEnumRecord = m_diffDb.getAllRecord();            ByteArrayInputStream tempDb = new ByteArrayInputStream(tData);            DataInputStream tempWordsDb=new DataInputStream(tempDb);            while(tempEnumRecord.hasNextElement()) {                tId = tempEnumRecord.nextRecordId();                //byte[] tempRecord = tempEnumRecord.nextRecord();                tLen = m_diffDb.myRecordStore.getRecordSize( tId );                if ( tLen > tData.length )                    tData = new byte[tLen+40];                m_diffDb.myRecordStore.getRecord( tId,tData,0 );                tempDb.reset();                String tempS;                tempWordsDb.readInt();                tempS=tempWordsDb.readUTF();                nowVector.addElement(tempS);                tempS=tempWordsDb.readUTF();                nowVector.addElement(tempS);                tempS=tempWordsDb.readUTF();                nowVector.addElement(tempS);                tempDb.close();            }        }catch(Exception e) {}        finally {            m_diffDb.closeDatabase();        }    }    public void writeWord(String nowWord, String nowChinese, String nowSpell) {        DbApi m_diffDb=new DbApi( "diffdb" );        byte[] tempB;        if (!haveDiffSpace()){            return;        }        try {            if(m_diffDb!=null) {                Integer tempInteger=(Integer)m_diffIndex.get(nowWord);                if(tempInteger==null) {                    int tempI=m_diffDb.myRecordStore.getNextRecordID();                    ByteArrayOutputStream tempBos=new ByteArrayOutputStream();                    DataOutputStream tempDos=new DataOutputStream(tempBos);                    tempDos.writeInt(tempI);                    tempDos.writeUTF(nowWord);                    tempDos.writeUTF(nowChinese);                    tempDos.writeUTF(nowSpell);                    tempB=tempBos.toByteArray();                    tempBos.close();                    tempI=m_diffDb.addDatabase(tempB);                    if (tempI>0) {                        m_diffIndex.put(nowWord,new Integer(tempI));                    }                }            }        }        catch(Exception dbE) {}        finally{            m_diffDb.closeDatabase();}    }    public boolean deleteWord(String nowWord) {        DbApi m_diffDb=new DbApi( "diffdb" );        m_diffDb.recordIndex(m_diffIndex);        Integer tempId;        tempId=(Integer)m_diffIndex.get(nowWord);        if(tempId!=null) {            m_diffIndex.remove(nowWord);            return m_diffDb.deleteRecord(tempId.intValue());        }        else            return false;    }}