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urowid.go
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urowid.go
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package go_ora
import (
"encoding/binary"
"fmt"
"github.com/sijms/go-ora/v2/network"
)
type urowid struct {
data []byte
rowid
}
func newURowID(session *network.Session) (*urowid, error) {
length, err := session.GetInt(4, true, true)
if err != nil {
return nil, err
}
ret := new(urowid)
if length > 0 {
ret.data, err = session.GetClr()
if err != nil {
return nil, err
}
return ret, nil
}
return nil, nil
}
func (id *urowid) physicalRawIDToByteArray() []byte {
// physical
temp32 := binary.BigEndian.Uint32(id.data[1:5])
id.rba = int64(temp32)
temp16 := binary.BigEndian.Uint16(id.data[5:7])
id.partitionID = int64(temp16)
temp32 = binary.BigEndian.Uint32(id.data[7:11])
id.blockNumber = int64(temp32)
temp16 = binary.BigEndian.Uint16(id.data[11:13])
id.slotNumber = int64(temp16)
if id.rba == 0 {
return []byte(fmt.Sprintf("%08X.%04X.%04X", id.blockNumber, id.slotNumber, id.partitionID))
} else {
return id.rowid.getBytes()
}
}
func (id *urowid) logicalRawIDToByteArray() []byte {
length1 := len(id.data)
num1 := length1 / 3
num2 := length1 % 3
num3 := num1 * 4
num4 := 0
if num2 > 1 {
num4 = 3
} else {
num4 = num2
}
length2 := num3 + num4
var output []byte = nil
if length2 > 0 {
KGRD_INDBYTE_CHAR := []byte{65, 42, 45, 40, 41}
var buffer = []byte{
65, 66, 67, 68, 69, 70, 71, 72,
73, 74, 75, 76, 77, 78, 79, 80,
81, 82, 83, 84, 85, 86, 87, 88,
89, 90, 97, 98, 99, 100, 101, 102,
103, 104, 105, 106, 107, 108, 109, 110,
111, 112, 113, 114, 115, 116, 117, 118,
119, 120, 121, 122, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 43, 47,
}
output = make([]byte, length2)
srcIndex := 0
dstIndex := 1
output[dstIndex] = KGRD_INDBYTE_CHAR[id.data[srcIndex]-1]
length1 -= 1
srcIndex++
dstIndex++
for length1 > 0 {
output[dstIndex] = buffer[id.data[srcIndex]>>2]
if length1 == 1 {
output[dstIndex+1] = buffer[(id.data[srcIndex]&3)<<4]
break
}
output[dstIndex+1] = buffer[(id.data[srcIndex]&3)<<4|(id.data[srcIndex+1]&0xF0)>>4]
if length1 == 2 {
output[dstIndex+2] = buffer[(id.data[srcIndex+1]&0xF)<<2]
break
}
output[dstIndex+2] = buffer[(id.data[srcIndex+1]&0xF)<<2|(id.data[srcIndex+2]&0xC0)>>6]
output[dstIndex+3] = buffer[id.data[srcIndex+2]&63]
length1 -= 3
srcIndex += 3
dstIndex += 3
}
}
return output
}
func (id *urowid) getBytes() []byte {
if id.data[0] == 1 {
return id.physicalRawIDToByteArray()
} else {
return id.logicalRawIDToByteArray()
}
}
//private void ConvertToRestrictedFormat(riddef ridRowId, byte[] bytes)
//{
// char paddingChar = '0';
// StringBuilder stringBuilder = new StringBuilder();
// stringBuilder.Append(Convert.ToString((long) ridRowId.ridblocknum, 16).PadLeft(8, paddingChar));
// stringBuilder.Append('.');
// stringBuilder.Append(Convert.ToString((int) ridRowId.ridslotnum, 16).PadLeft(4, paddingChar));
// stringBuilder.Append('.');
// stringBuilder.Append(Convert.ToString((int) ridRowId.idfilenum, 16).PadLeft(4, paddingChar));
// string upperInvariant = stringBuilder.ToString().ToUpperInvariant();
// int num = 0;
// foreach (char ch in upperInvariant)
// bytes[num++] = (byte) ch;
//}
//private void ConvertToExtendedFormat(riddef ridRowID, byte[] byteArray)
//{
// int offset1 = 0;
// uint ridobjnum = ridRowID.ridobjnum;
// int offset2 = this.kgrd42b(byteArray, (long) ridobjnum, 6, offset1);
// uint idfilenum = (uint) ridRowID.idfilenum;
// int offset3 = this.kgrd42b(byteArray, (long) idfilenum, 3, offset2);
// uint ridblocknum = ridRowID.ridblocknum;
// int offset4 = this.kgrd42b(byteArray, (long) ridblocknum, 6, offset3);
// uint ridslotnum = (uint) ridRowID.ridslotnum;
// this.kgrd42b(byteArray, (long) ridslotnum, 3, offset4);
//}
//private byte[] LogicalROWIDToByteArray(byte[] byteStream)
//{
//byte[] dstBytes = (byte[]) null;
//int length1 = byteStream.Length;
//int num1 = length1 / 3;
//int num2 = length1 % 3;
//int num3 = 4 * num1;
//int num4;
//switch (num2)
//{
//case 0:
//num4 = 0;
//break;
//case 1:
//num4 = 1;
//break;
//default:
//num4 = 3;
//break;
//}
//int length2 = num3 + num4;
//if (length2 > 0)
//{
//dstBytes = new byte[length2];
//this.kgrdub2c(byteStream, length1, 0, dstBytes, 0);
//}
//return dstBytes;
//}
//private void kgrdub2c(byte[] id.data, int size, int offset, byte[] output, int dstOffset)
//{
// output[dstOffset] = TTCRowIdAccessor.KGRD_INDBYTE_CHAR[(int)id.data[offset] - 1];
// int num1 = size - 1;
// offset ++;
// dstOffset ++;
// while (num1 > 0)
// {
// output[dstOffset] = (int)TTCRowIdAccessor.KGRD_BASIS_64[((int)id.data[offset] & (int)byte.MaxValue) >> 2];
// if (num1 == 1)
// {
// output[dstOffset + 1] = (int)TTCRowIdAccessor.KGRD_BASIS_64[((int)id.data[offset] & 3) << 4];
// break;
// }
// byte num11 = (byte)((uint)id.data[offset + 1] & (uint)byte.MaxValue);
// int num15 = (int)TTCRowIdAccessor.KGRD_BASIS_64[((int)id.data[offset] & 3) << 4 | ((int)num11 & 240) >> 4];
// output[dstOffset + 1] = (byte)num15;
// if (num1 == 2)
// {
// int num10 = (int)TTCRowIdAccessor.KGRD_BASIS_64[((int)num11 & 15) << 2];
// output[dstOffset + 2] = (byte)num10;
// break;
// }
// int num19 = (int)TTCRowIdAccessor.KGRD_BASIS_64[((int)num11 & 15) << 2 | ((int)id.data[offset + 2] & 192) >> 6];
// output[dstOffset + 2] = (byte)num19;
// output[dstOffset + 3] = TTCRowIdAccessor.KGRD_BASIS_64[(int)id.data[offset + 2] & 63];
// num1 -= 3;
// offset += 3;
// dstOffset += 3;
// }
//}