Examples of org.apache.derby.impl.store.raw.data.OverflowInputStream

Package org.apache.derby.impl.store.raw.data

Examples of org.apache.derby.impl.store.raw.data.OverflowInputStream

org.apache.derby.impl.store.raw.data.OverflowInputStream
A OverflowInputStream is used by store to turn a long column into an InputStream.

                if (!StoredFieldHeader.isNonexistent(fieldStatus))
                {
                    boolean isOverflow = 
                        StoredFieldHeader.isOverflow(fieldStatus);


                    OverflowInputStream overflowIn = null;


                    if (isOverflow) 
                    {
                        // A fetched long column is returned as a stream
                        long overflowPage   = 
                            CompressedNumber.readLong((InputStream) lrdi);


                        int overflowId      = 
                            CompressedNumber.readInt((InputStream) lrdi);


                        // Prepare the stream for results...
                        // create the byteHolder the size of a page, so, that it 
                        // will fit the field Data that would fit on a page.
                        MemByteHolder byteHolder = 
                            new MemByteHolder(pageData.length);


                        overflowIn = new OverflowInputStream(
                            byteHolder, owner, overflowPage, 
                            overflowId, recordToLock);
                    }


                    // Deal with Storable columns

View Full Code Here

                        "extensible fields not supported yet");
        }


                Object column     = row[columnId];


        OverflowInputStream overflowIn = null;


        // SRW-DJD code assumes non-extensible case ...


        // field is non-existent, return null
        if (StoredFieldHeader.isNonexistent(fieldStatus)) 
                {


          if (column instanceof DataValueDescriptor) 
                    {
            // RESOLVE - This is in place for 1.2. In the future
            // we may want to return this column as non-existent
            // even if it is a storable column, or maybe use a 
                        // supplied default.
            ((DataValueDescriptor) column).restoreToNull();
          } 
                    else 
                    {
            row[columnId] = null;
          }
          continue;
        }


        boolean isOverflow = StoredFieldHeader.isOverflow(fieldStatus);


        if (isOverflow) 
                {


          // A fetched long column needs to be returned as a stream
                    //
          long overflowPage   = 
                        CompressedNumber.readLong((InputStream) dataIn);


          int overflowId      = 
                        CompressedNumber.readInt((InputStream) dataIn);


          // Prepare the stream for results...
          // create the byteHolder the size of a page, so, that it 
                    // will fit the field Data that would fit on a page.
          MemByteHolder byteHolder = 
                        new MemByteHolder(pageData.length);


          overflowIn = new OverflowInputStream(
                        byteHolder, owner, overflowPage, 
                        overflowId, recordToLock);
        }


        // Deal with Object columns

View Full Code Here

                            "extensible fields not supported yet");
                    }


                    Object              column     = row[columnId];


                    OverflowInputStream overflowIn = null;


                    // SRW-DJD code assumes non-extensible case ...


                    if ((fieldStatus & StoredFieldHeader.FIELD_NONEXISTENT) != 
                                            StoredFieldHeader.FIELD_NONEXISTENT)
                    {
                        // normal path - field exists.


                        boolean isOverflow = 
                            ((fieldStatus & 
                                  StoredFieldHeader.FIELD_OVERFLOW) != 0);


                        if (isOverflow) 
                        {


                            // A fetched long column is returned as a stream


                            long overflowPage   = 
                                CompressedNumber.readLong((InputStream) dataIn);


                            int overflowId      = 
                                CompressedNumber.readInt((InputStream) dataIn);


                            // Prepare the stream for results...
                            // create the byteHolder the size of a page, so, 
                            // that it will fit the field Data that would fit 
                            // on a page.


                            MemByteHolder byteHolder = 
                                new MemByteHolder(pageData.length);


                            overflowIn = new OverflowInputStream(
                                byteHolder, owner, overflowPage, 
                                overflowId, recordToLock);
                        }


                        // Deal with Object columns

View Full Code Here

                if (!StoredFieldHeader.isNonexistent(fieldStatus))
                {
                    boolean isOverflow = 
                        StoredFieldHeader.isOverflow(fieldStatus);


                    OverflowInputStream overflowIn = null;


                    if (isOverflow) 
                    {
                        // A fetched long column is returned as a stream
                        long overflowPage   = 
                            CompressedNumber.readLong((InputStream) lrdi);


                        int overflowId      = 
                            CompressedNumber.readInt((InputStream) lrdi);


                        // Prepare the stream for results...
                        // create the byteHolder the size of a page, so, that it 
                        // will fit the field Data that would fit on a page.
                        MemByteHolder byteHolder = 
                            new MemByteHolder(pageData.length);


                        overflowIn = new OverflowInputStream(
                            byteHolder, owner, overflowPage, 
                            overflowId, recordToLock);
                    }


                    // Deal with Storable columns

View Full Code Here

                        "extensible fields not supported yet");
        }


                Object column     = row[columnId];


        OverflowInputStream overflowIn = null;


        // SRW-DJD code assumes non-extensible case ...


        // field is non-existent, return null
        if (StoredFieldHeader.isNonexistent(fieldStatus)) 
                {


          if (column instanceof DataValueDescriptor) 
                    {
            // RESOLVE - This is in place for 1.2. In the future
            // we may want to return this column as non-existent
            // even if it is a storable column, or maybe use a 
                        // supplied default.
            ((DataValueDescriptor) column).restoreToNull();
          } 
                    else 
                    {
            row[columnId] = null;
          }
          continue;
        }


        boolean isOverflow = StoredFieldHeader.isOverflow(fieldStatus);


        if (isOverflow) 
                {


          // A fetched long column needs to be returned as a stream
                    //
          long overflowPage   = 
                        CompressedNumber.readLong((InputStream) dataIn);


          int overflowId      = 
                        CompressedNumber.readInt((InputStream) dataIn);


          // Prepare the stream for results...
          // create the byteHolder the size of a page, so, that it 
                    // will fit the field Data that would fit on a page.
          MemByteHolder byteHolder = 
                        new MemByteHolder(pageData.length);


          overflowIn = new OverflowInputStream(
                        byteHolder, owner, overflowPage, 
                        overflowId, recordToLock);
        }


        // Deal with Object columns

View Full Code Here

                            "extensible fields not supported yet");
                    }


                    Object              column     = row[columnId];


                    OverflowInputStream overflowIn = null;


                    // SRW-DJD code assumes non-extensible case ...


                    if ((fieldStatus & StoredFieldHeader.FIELD_NONEXISTENT) != 
                                            StoredFieldHeader.FIELD_NONEXISTENT)
                    {
                        // normal path - field exists.


                        boolean isOverflow = 
                            ((fieldStatus & 
                                  StoredFieldHeader.FIELD_OVERFLOW) != 0);


                        if (isOverflow) 
                        {


                            // A fetched long column is returned as a stream


                            long overflowPage   = 
                                CompressedNumber.readLong((InputStream) dataIn);


                            int overflowId      = 
                                CompressedNumber.readInt((InputStream) dataIn);


                            // Prepare the stream for results...
                            // create the byteHolder the size of a page, so, 
                            // that it will fit the field Data that would fit 
                            // on a page.


                            MemByteHolder byteHolder = 
                                new MemByteHolder(pageData.length);


                            overflowIn = new OverflowInputStream(
                                byteHolder, owner, overflowPage, 
                                overflowId, recordToLock);
                        }


                        // Deal with Object columns

View Full Code Here

                if (!StoredFieldHeader.isNonexistent(fieldStatus))
                {
                    boolean isOverflow = 
                        StoredFieldHeader.isOverflow(fieldStatus);


                    OverflowInputStream overflowIn = null;


                    if (isOverflow) 
                    {
                        // A fetched long column is returned as a stream
                        long overflowPage   = 
                            CompressedNumber.readLong((InputStream) lrdi);


                        int overflowId      = 
                            CompressedNumber.readInt((InputStream) lrdi);


                        // Prepare the stream for results...
                        // create the byteHolder the size of a page, so, that it 
                        // will fit the field Data that would fit on a page.
                        MemByteHolder byteHolder = 
                            new MemByteHolder(pageData.length);


                        overflowIn = new OverflowInputStream(
                            byteHolder, owner, overflowPage, 
                            overflowId, recordToLock);
                    }


                    // Deal with Storable columns

View Full Code Here

                        "extensible fields not supported yet");
        }


                Object column     = row[columnId];


        OverflowInputStream overflowIn = null;


        // SRW-DJD code assumes non-extensible case ...


        // field is non-existent, return null
        if (StoredFieldHeader.isNonexistent(fieldStatus)) 
                {


          if (column instanceof DataValueDescriptor) 
                    {
            // RESOLVE - This is in place for 1.2. In the future
            // we may want to return this column as non-existent
            // even if it is a storable column, or maybe use a 
                        // supplied default.
            ((DataValueDescriptor) column).restoreToNull();
          } 
                    else 
                    {
            row[columnId] = null;
          }
          continue;
        }


        boolean isOverflow = StoredFieldHeader.isOverflow(fieldStatus);


        if (isOverflow) 
                {


          // A fetched long column needs to be returned as a stream
                    //
          long overflowPage   = 
                        CompressedNumber.readLong((InputStream) dataIn);


          int overflowId      = 
                        CompressedNumber.readInt((InputStream) dataIn);


          // Prepare the stream for results...
          // create the byteHolder the size of a page, so, that it 
                    // will fit the field Data that would fit on a page.
          MemByteHolder byteHolder = 
                        new MemByteHolder(pageData.length);


          overflowIn = new OverflowInputStream(
                        byteHolder, owner, overflowPage, 
                        overflowId, recordToLock);
        }


        // Deal with Object columns

View Full Code Here

                            "extensible fields not supported yet");
                    }


                    Object              column     = row[columnId];


                    OverflowInputStream overflowIn = null;


                    // SRW-DJD code assumes non-extensible case ...


                    if ((fieldStatus & StoredFieldHeader.FIELD_NONEXISTENT) != 
                                            StoredFieldHeader.FIELD_NONEXISTENT)
                    {
                        // normal path - field exists.


                        boolean isOverflow = 
                            ((fieldStatus & 
                                  StoredFieldHeader.FIELD_OVERFLOW) != 0);


                        if (isOverflow) 
                        {


                            // A fetched long column is returned as a stream


                            long overflowPage   = 
                                CompressedNumber.readLong((InputStream) dataIn);


                            int overflowId      = 
                                CompressedNumber.readInt((InputStream) dataIn);


                            // Prepare the stream for results...
                            // create the byteHolder the size of a page, so, 
                            // that it will fit the field Data that would fit 
                            // on a page.


                            MemByteHolder byteHolder = 
                                new MemByteHolder(pageData.length);


                            overflowIn = new OverflowInputStream(
                                byteHolder, owner, overflowPage, 
                                overflowId, recordToLock);
                        }


                        // Deal with Object columns

View Full Code Here

                if (!StoredFieldHeader.isNonexistent(fieldStatus))
                {
                    boolean isOverflow = 
                        StoredFieldHeader.isOverflow(fieldStatus);


                    OverflowInputStream overflowIn = null;


                    if (isOverflow) 
                    {
                        // A fetched long column is returned as a stream
                        long overflowPage   = 
                            CompressedNumber.readLong((InputStream) lrdi);


                        int overflowId      = 
                            CompressedNumber.readInt((InputStream) lrdi);


                        // Prepare the stream for results...
                        // create the byteHolder the size of a page, so, that it 
                        // will fit the field Data that would fit on a page.
                        MemByteHolder byteHolder = 
                            new MemByteHolder(pageData.length);


                        overflowIn = new OverflowInputStream(
                            byteHolder, owner, overflowPage, 
                            overflowId, recordToLock);
                    }


                    // Deal with Storable columns

View Full Code Here

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