Selhání deserializace objektu v upgradu ojdbc14 na ojdbc6

** Pokud spěcháte, stáhněte si přizpůsobený soubor ojdbc6.jar a použijte jej. Nemusíte dělat nic jiného.

https://drive.google.com/open?id=0Bz2PT96Cb0tSRk5XNGU3TUdHS1U

Shrnutí mé odpovědi

Nejprve dekompilujte níže uvedené třídy.

• oracle.sql.DatumWithConnection.class

• oracle.sql.BLOB.class
Poté přidejte staré serialVersionUID do těchto tříd. (ID starých verzí jsou k dispozici v protokolu chyb)
Poté znovu zkompilujte třídy.
Nakonec aktualizujte soubor ojdbc6.jar novými třídami, abyste získali upgradovanou a přizpůsobenou knihovnu ojdbc. To je ono.

Pokud chcete JAR sestavit ručně, přečtěte si níže uvedené pokyny a postupujte podle nich.

Jak vytvořit přizpůsobený JAR

Nejprve dekompilujte níže uvedené třídy v souboru ojdbc6.jar.

• oracle.sql.DatumWithConnection.class

• oracle.sql.BLOB.class

K dekompilaci můžete použít "Java Decompiler" na http://jd.benow.ca/

(Toto byly třídy, které způsobovaly potíže při čtení uloženého objektu BLOB z databáze.)

Vytvořte jednoduchý java projekt (File--> New--> JavaProject) v Eclipse nebo použijte Jednoduchý projekt Vytvořil jsem.

Pokud vytváříte nový projekt, přidejte dekompilované java soubory se správnou strukturou balení (oracle.sql). Také musíte přidat soubor ojdbc6.jar do cesty sestavení tohoto projektu.

Poté přidejte staré serialVersionUID do těchto dekompilovaných java souborů. (K kompilaci těchto java souborů jsou také nutné další změny. Prostudujte si prosím aktualizované java soubory níže)
```
 DatumWithConnection.java ->    private static final long serialVersionUID = 491462912477014233L;

 BLOB.java          ->  private static final long serialVersionUID = 2160152488501369185L;
```
Poté vytvořte projekt a získejte rekompilované třídy.
Nakonec aktualizujte ojdbc6.jar novými třídami, abyste získali upgradovanou a přizpůsobenou knihovnu ojdbc. To je ono

5.1 Vytvořte novou složku s názvem "Updated JAR".

5.2 Zkopírujte soubor ojdbc6.jar do této složky.D:\JARS\Aktualizovaný JAR\ojdbc.jar

5.3 V této složce vytvořte dvě nové složky pro vytvoření struktury balíčku pro soubory třídy (\oracle\sql)

5.4 Přidejte oba soubory třídy do složky "sql".
```
 D:\JARS\Updated JAR\oracle\sql\DatumWithConnection.class

 D:\JARS\Updated JAR\oracle\sql\BLOB.class
```
5.5 Otevřete nový příkazový řádek a změňte adresář (cd) na umístění, kde se nachází soubor jar.
```
>cd D:\JARS\Updated JAR
```
5.6 Chcete-li aktualizovat soubor jar novými soubory třídy, použijte níže uvedené příkazy v příkazovém řádku.
```
>jar uf ojdbc6.jar oracle\sql\DatumWithConnection.class

>jar uf ojdbc6.jar oracle\sql\BLOB.class
```
5.7 Nyní máte přizpůsobený soubor ojdbc6.jar, který pracuje s objekty BLOB, které byly serializovány a uloženy s ojdbc14.jar

Aktualizované třídy Java.

DatumWithConnection.java

    package oracle.sql;


    import java.sql.Connection;
    import java.sql.SQLException;
    import oracle.jdbc.driver.DatabaseError;
    import oracle.jdbc.driver.OracleDriver;
    import oracle.jdbc.internal.OracleDatumWithConnection;

    public abstract class DatumWithConnection
      extends Datum
      implements OracleDatumWithConnection
    {

    private static final long serialVersionUID = 491462912477014233L;

    private oracle.jdbc.internal.OracleConnection physicalConnection = null;

      oracle.jdbc.internal.OracleConnection getPhysicalConnection()
      {
        if (this.physicalConnection == null) {
          try
          {
            this.physicalConnection = ((oracle.jdbc.internal.OracleConnection)new OracleDriver().defaultConnection());
          }
          catch (SQLException localSQLException) {}
        }
        return this.physicalConnection;
      }

      public DatumWithConnection(byte[] paramArrayOfByte)
        throws SQLException
      {
        super(paramArrayOfByte);
      }

      public DatumWithConnection() {}

      public static void assertNotNull(Connection paramConnection)
        throws SQLException
      {
        if (paramConnection == null)
        {
          SQLException localSQLException = DatabaseError.createSqlException(null, 68, "Connection is null");
          localSQLException.fillInStackTrace();
          throw localSQLException;
        }
      }

      public static void assertNotNull(TypeDescriptor paramTypeDescriptor)
        throws SQLException
      {
        if (paramTypeDescriptor == null)
        {
          SQLException localSQLException = DatabaseError.createSqlException(null, 61);
          localSQLException.fillInStackTrace();
          throw localSQLException;
        }
      }

      public void setPhysicalConnectionOf(Connection paramConnection)
      {
        this.physicalConnection = ((oracle.jdbc.OracleConnection)paramConnection).physicalConnectionWithin();
      }

      public Connection getJavaSqlConnection()
        throws SQLException
      {
        return getPhysicalConnection().getWrapper();
      }

      public oracle.jdbc.OracleConnection getOracleConnection()
        throws SQLException
      {
        return getPhysicalConnection().getWrapper();
      }

      public oracle.jdbc.internal.OracleConnection getInternalConnection()
        throws SQLException
      {
        return getPhysicalConnection();
      }

      /**
       * @deprecated
       */
      public oracle.jdbc.driver.OracleConnection getConnection()
        throws SQLException
      {
        oracle.jdbc.driver.OracleConnection localOracleConnection = null;
        try
        {
          localOracleConnection = (oracle.jdbc.driver.OracleConnection)((oracle.jdbc.driver.OracleConnection)this.physicalConnection).getWrapper();
        }
        catch (ClassCastException localClassCastException)
        {
          SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 103);
          localSQLException.fillInStackTrace();
          throw localSQLException;
        }
        return localOracleConnection;
      }

      protected oracle.jdbc.internal.OracleConnection getConnectionDuringExceptionHandling()
      {
        return this.physicalConnection;
      }

      private static final String _Copyright_2007_Oracle_All_Rights_Reserved_ = null;
      public static final boolean TRACE = false;
    }

BLOB.java

    package oracle.sql;

    import java.io.ByteArrayInputStream;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.io.Reader;
    import java.sql.Blob;
    import java.sql.Connection;
    import java.sql.SQLException;
    import oracle.jdbc.LargeObjectAccessMode;
    import oracle.jdbc.driver.DatabaseError;
    import oracle.jdbc.internal.OracleBlob;

    public class BLOB extends DatumWithConnection implements OracleBlob {

        private static final long serialVersionUID = 2160152488501369185L;

        public static final int MAX_CHUNK_SIZE = 32768;
        public static final int DURATION_SESSION = 10;
        public static final int DURATION_CALL = 12;
        static final int OLD_WRONG_DURATION_SESSION = 1;
        static final int OLD_WRONG_DURATION_CALL = 2;
        public static final int MODE_READONLY = 0;
        public static final int MODE_READWRITE = 1;
        BlobDBAccess dbaccess;
        int dbChunkSize;
        boolean isFree;
        boolean fromObject;
        private long cachedLobLength;
        private byte[] prefetchData;
        private int prefetchDataSize;
        private boolean activePrefetch;
        static final int KDLCTLSIZE = 16;
        static final int KDF_FLAG = 88;
        static final int KDLIDDAT = 8;
        private static final String _Copyright_2007_Oracle_All_Rights_Reserved_ = null;
        public static final boolean TRACE = false;
        public static Object localObject;


        protected BLOB() {
            this.dbChunkSize = -1;
            this.isFree = false;

            this.fromObject = false;

            this.cachedLobLength = -1L;

            this.prefetchDataSize = 0;
            this.activePrefetch = false;
        }

        public BLOB(oracle.jdbc.OracleConnection paramOracleConnection) throws SQLException {
            this(paramOracleConnection, null);
        }

        public BLOB(oracle.jdbc.OracleConnection paramOracleConnection, byte[] paramArrayOfByte, boolean paramBoolean)
                throws SQLException {
            this(paramOracleConnection, paramArrayOfByte);

            this.fromObject = paramBoolean;
        }

        public BLOB(oracle.jdbc.OracleConnection paramOracleConnection, byte[] paramArrayOfByte) throws SQLException {
            super(paramArrayOfByte);

            this.dbChunkSize = -1;
            this.isFree = false;

            this.fromObject = false;

            this.cachedLobLength = -1L;

            this.prefetchDataSize = 0;
            this.activePrefetch = false;

            assertNotNull(paramOracleConnection);
            setPhysicalConnectionOf(paramOracleConnection);

            this.dbaccess = getPhysicalConnection().createBlobDBAccess();

            this.dbaccess.incrementTempLobReferenceCount(paramArrayOfByte);
        }

        public long length() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            long l = -1L;

            if ((this.activePrefetch) && (this.cachedLobLength != -1L))
                l = this.cachedLobLength;
            else if (canReadBasicLobDataInLocator())
                l = dilLength();
            else
                l = getDBAccess().length(this);
            return l;
        }

        public byte[] getBytes(long paramLong, int paramInt) throws SQLException {
            if (this.isFree) {
                localObject = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 192);
                ((SQLException) localObject).fillInStackTrace();
                throw ((SQLException) localObject);
            }
            if ((paramInt < 0) || (paramLong < 1L)) {
                localObject = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 68, "getBytes()");
                ((SQLException) localObject).fillInStackTrace();
                throw ((SQLException) localObject);
            }

            if (canReadBasicLobDataInLocator()) {
                return dilGetBytes(paramLong, paramInt);
            }

            Object localObject = null;

            if (paramInt == 0) {
                return new byte[0];
            }
            if ((this.activePrefetch) && (((this.cachedLobLength == 0L)
                    || ((this.cachedLobLength > 0L) && (paramLong - 1L >= this.cachedLobLength))))) {
                localObject = null;
            } else {
                long l = 0L;
                byte[] arrayOfByte;
                if ((this.activePrefetch) && (this.cachedLobLength != -1L))
                    arrayOfByte = new byte[Math.min((int) this.cachedLobLength, paramInt)];
                else {
                    arrayOfByte = new byte[paramInt];
                }

                l = getBytes(paramLong, paramInt, arrayOfByte);

                if (l > 0L) {
                    if (l == paramInt) {
                        localObject = arrayOfByte;
                    } else {
                        localObject = new byte[(int) l];

                        System.arraycopy(arrayOfByte, 0, localObject, 0, (int) l);
                    }
                }
            }

            return ((byte[])localObject);
        }

        public InputStream getBinaryStream() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            if (canReadBasicLobDataInLocator()) {
                return dilGetBinaryStream(1L);
            }
            return getDBAccess().newInputStream(this, getBufferSize(), 0L);
        }

        public long position(byte[] paramArrayOfByte, long paramLong) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().position(this, paramArrayOfByte, paramLong);
        }

        public long position(Blob paramBlob, long paramLong) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().position(this, (BLOB) paramBlob, paramLong);
        }

        public int getBytes(long paramLong, int paramInt, byte[] paramArrayOfByte) throws SQLException {
            SQLException localSQLException;
            if (this.isFree) {
                localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            if ((paramInt < 0) || (paramLong < 0L)) {
                localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 68,
                        "getBytes()");
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }

            if (paramArrayOfByte.length < paramInt) {
                paramInt = paramArrayOfByte.length;
            }
            return getDBAccess().getBytes(this, paramLong, paramInt, paramArrayOfByte);
        }

        public int putBytes(long paramLong, byte[] paramArrayOfByte) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return setBytes(paramLong, paramArrayOfByte);
        }

        public int putBytes(long paramLong, byte[] paramArrayOfByte, int paramInt) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return setBytes(paramLong, paramArrayOfByte, 0, paramInt);
        }

        public OutputStream getBinaryOutputStream() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return setBinaryStream(1L);
        }

        public byte[] getLocator() {
            return getBytes();
        }

        public void setLocator(byte[] paramArrayOfByte) {
            setBytes(paramArrayOfByte);
        }

        public int getChunkSize() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            if (this.dbChunkSize <= 0) {
                this.dbChunkSize = getDBAccess().getChunkSize(this);
            }

            return this.dbChunkSize;
        }

        public int getBufferSize() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            int i = getChunkSize();
            int j = i;

            if ((i >= 32768) || (i <= 0)) {
                j = 32768;
            } else {
                j = 32768 / i * i;
            }

            return j;
        }

        public static BLOB empty_lob() throws SQLException {
            return getEmptyBLOB();
        }

        public static BLOB getEmptyBLOB() throws SQLException {
            byte[] arrayOfByte = new byte[86];

            arrayOfByte[1] = 84;
            arrayOfByte[5] = 24;

            BLOB localBLOB = new BLOB();

            localBLOB.setShareBytes(arrayOfByte);

            return localBLOB;
        }

        public boolean isEmptyLob() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            boolean bool = (shareBytes()[5] & 0x10) != 0;

            return bool;
        }

        public boolean isSecureFile() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            boolean bool = (shareBytes()[7] & 0xFFFFFF80) != 0;
            return bool;
        }

        public OutputStream getBinaryOutputStream(long paramLong) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().newOutputStream(this, getBufferSize(), paramLong, false);
        }

        public InputStream getBinaryStream(long paramLong) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            if (canReadBasicLobDataInLocator()) {
                return dilGetBinaryStream(paramLong);
            }
            return getDBAccess().newInputStream(this, getBufferSize(), paramLong);
        }

        public void trim(long paramLong) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            truncate(paramLong);
        }

        public static BLOB createTemporary(Connection paramConnection, boolean paramBoolean, int paramInt)
                throws SQLException {
            int i = paramInt;

            if (paramInt == 1) {
                i = 10;
            }
            if (paramInt == 2) {
                i = 12;
            }
            if ((paramConnection == null) || ((i != 10) && (i != 12))) {
                localObject = DatabaseError.createSqlException(null, 68,
                        "'conn' should not be null and 'duration' should either be equal to DURATION_SESSION or to DURATION_CALL");

                ((SQLException) localObject).fillInStackTrace();
                throw ((SQLException) localObject);
            }

            Object localObject = ((oracle.jdbc.OracleConnection) paramConnection).physicalConnectionWithin();

            return ((BLOB) getDBAccess((Connection) localObject).createTemporaryBlob((Connection) localObject, paramBoolean,
                    i));
        }

        public static void freeTemporary(BLOB paramBLOB) throws SQLException {
            if (paramBLOB == null) {
                return;
            }
            paramBLOB.freeTemporary();
        }

        public static boolean isTemporary(BLOB paramBLOB) throws SQLException {
            if (paramBLOB == null) {
                return false;
            }
            return paramBLOB.isTemporary();
        }

        public void freeTemporary() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }

            int i = getDBAccess().decrementTempLobReferenceCount(shareBytes());

            if (i == 0)
                getDBAccess().freeTemporary(this, this.fromObject);
        }

        public boolean isTemporary() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().isTemporary(this);
        }

        public void open(LargeObjectAccessMode paramLargeObjectAccessMode) throws SQLException {
            open(paramLargeObjectAccessMode.getCode());
        }

        public void open(int paramInt) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            getDBAccess().open(this, paramInt);
        }

        public void close() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            getDBAccess().close(this);
        }

        public boolean isOpen() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().isOpen(this);
        }

        public int setBytes(long paramLong, byte[] paramArrayOfByte) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }

            return getDBAccess().putBytes(this, paramLong, paramArrayOfByte, 0,
                    (paramArrayOfByte != null) ? paramArrayOfByte.length : 0);
        }

        public int setBytes(long paramLong, byte[] paramArrayOfByte, int paramInt1, int paramInt2) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().putBytes(this, paramLong, paramArrayOfByte, paramInt1, paramInt2);
        }

        public OutputStream setBinaryStream(long paramLong) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return getDBAccess().newOutputStream(this, getBufferSize(), paramLong, true);
        }

        public void truncate(long paramLong) throws SQLException {
            SQLException localSQLException;
            if (this.isFree) {
                localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            if (paramLong < 0L) {
                localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 68,
                        "'len' should be >= 0. ");
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }

            getDBAccess().trim(this, paramLong);
        }

        public Object toJdbc() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return this;
        }

        public boolean isConvertibleTo(Class paramClass) {
            String str = paramClass.getName();

            return ((str.compareTo("java.io.InputStream") == 0) || (str.compareTo("java.io.Reader") == 0));
        }

        public Reader characterStreamValue() throws SQLException {
            getInternalConnection();
            return getDBAccess().newConversionReader(this, 8);
        }

        public InputStream asciiStreamValue() throws SQLException {
            getInternalConnection();
            return getDBAccess().newConversionInputStream(this, 2);
        }

        public InputStream binaryStreamValue() throws SQLException {
            return getBinaryStream();
        }

        public Object makeJdbcArray(int paramInt) {
            return new BLOB[paramInt];
        }

        public BlobDBAccess getDBAccess() throws SQLException {
            SQLException localSQLException;
            if (this.dbaccess == null) {
                if (isEmptyLob()) {
                    localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 98);
                    localSQLException.fillInStackTrace();
                    throw localSQLException;
                }

                this.dbaccess = getInternalConnection().createBlobDBAccess();
            }

            if (getPhysicalConnection().isClosed()) {
                localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 8);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }

            return this.dbaccess;
        }

        public static BlobDBAccess getDBAccess(Connection paramConnection) throws SQLException {
            return ((oracle.jdbc.OracleConnection) paramConnection).physicalConnectionWithin().createBlobDBAccess();
        }

        public Connection getJavaSqlConnection() throws SQLException {
            if (this.isFree) {
                SQLException localSQLException = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException.fillInStackTrace();
                throw localSQLException;
            }
            return super.getJavaSqlConnection();
        }

        public final void setLength(long paramLong) {
            this.cachedLobLength = paramLong;
        }

        public final void setChunkSize(int paramInt) {
            this.dbChunkSize = paramInt;
        }

        public final void setPrefetchedData(byte[] paramArrayOfByte) {
            if (paramArrayOfByte == null)
                setPrefetchedData(null, 0);
            else
                setPrefetchedData(paramArrayOfByte, paramArrayOfByte.length);
        }

        public final void setPrefetchedData(byte[] paramArrayOfByte, int paramInt) {
            this.prefetchData = paramArrayOfByte;
            this.prefetchDataSize = paramInt;
        }

        public final byte[] getPrefetchedData() {
            return this.prefetchData;
        }

        public final int getPrefetchedDataSize() {
            return this.prefetchDataSize;
        }

        public final void setActivePrefetch(boolean paramBoolean) {
            if ((this.activePrefetch) && (!(paramBoolean)))
                clearCachedData();
            this.activePrefetch = paramBoolean;
        }

        public final void clearCachedData() {
            this.cachedLobLength = -1L;
            this.prefetchData = null;
        }

        public final boolean isActivePrefetch() {
            return this.activePrefetch;
        }

        boolean canReadBasicLobDataInLocator() throws SQLException {
            byte[] arrayOfByte = shareBytes();
            if ((arrayOfByte == null) || (arrayOfByte.length < 102)) {
              return false;
            }
            if (!getPhysicalConnection().isDataInLocatorEnabled()) {
              return false;
            }
            int i = arrayOfByte[6] & 0xFF;
            int j = arrayOfByte[7] & 0xFF;
            int k = (i & 0x8) == 8 ? 1 : 0;
            int m = (j & 0xFFFFFF80) == -128 ? 1 : 0;
            int n = 0;
            if ((k != 0) && (m == 0))
            {
              n = ((arrayOfByte[88] & 0xFF) & 0x8) == 8 ? 1 : 0;
            }
            return (k != 0) && (m == 0) && (n != 0);
        }

        int dilLength() {
            return (shareBytes().length - 86 - 16);
        }

        byte[] dilGetBytes(long paramLong, int paramInt) throws SQLException {
            if (paramInt == 0) {
                return new byte[0];
            }

            if (dilLength() == 0) {
                return null;
            }
            int i = (int) Math.min(paramInt, dilLength() - (paramLong - 1L));

            if (i <= 0) {
                return null;
            }

            byte[] arrayOfByte = new byte[i];
            System.arraycopy(shareBytes(), (int) (paramLong - 1L) + 86 + 16, arrayOfByte, 0, i);
            return arrayOfByte;
        }

        InputStream dilGetBinaryStream(long paramLong) throws SQLException {
            if (paramLong < 0L) {
                throw new IllegalArgumentException("Illegal Arguments");
            }

            byte[] arrayOfByte = dilGetBytes(paramLong, dilLength());

            if (arrayOfByte == null) {
                arrayOfByte = new byte[0];
            }

            return new ByteArrayInputStream(arrayOfByte);
        }

        public void free() throws SQLException {
            if (this.isFree)
                return;
            if (isOpen())
                close();
            if (isTemporary())
                freeTemporary();
            this.isFree = true;
            this.dbaccess = null;
        }

        public InputStream getBinaryStream(long paramLong1, long paramLong2) throws SQLException {
            if (this.isFree) {
                SQLException localSQLException1 = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        192);
                localSQLException1.fillInStackTrace();
                throw localSQLException1;
            }
            if (canReadBasicLobDataInLocator()) {
                return dilGetBinaryStream(paramLong1, paramLong2);
            }
            long l = length();
            if ((paramLong1 < 1L) || (paramLong2 < 0L) || (paramLong1 > l) || (paramLong1 - 1L + paramLong2 > l)) {
                SQLException localSQLException2 = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(),
                        68);
                localSQLException2.fillInStackTrace();
                throw localSQLException2;
            }
            return getDBAccess().newInputStream(this, getChunkSize(), paramLong1, paramLong2);
        }

        InputStream dilGetBinaryStream(long paramLong1, long paramLong2) throws SQLException {
            int i = dilLength();
            if ((paramLong1 < 1L) || (paramLong2 < 0L) || (paramLong1 > i) || (paramLong1 - 1L + paramLong2 > i)) {
                localObject = DatabaseError.createSqlException(getConnectionDuringExceptionHandling(), 68);
                ((SQLException) localObject).fillInStackTrace();
                throw ((SQLException) localObject);
            }
            byte[] localObject = dilGetBytes(paramLong1, i - (int) (paramLong1 - 1L));
            return ((InputStream) new ByteArrayInputStream(localObject, 0, (int) paramLong2));
        }
    }