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00020 #include <config.h>
00021 #include <cstring>
00022
00023 #include <drizzled/xid.h>
00024 #include <drizzled/charset.h>
00025 #include <drizzled/global_charset_info.h>
00026 #include <drizzled/charset_info.h>
00027
00028 namespace drizzled {
00029
00030 bool XID::eq(XID *xid)
00031 {
00032 return eq(xid->gtrid_length, xid->bqual_length, xid->data);
00033 }
00034
00035 bool XID::eq(long g, long b, const char *d)
00036 {
00037 return g == gtrid_length && b == bqual_length && !memcmp(d, data, g+b);
00038 }
00039
00040 void XID::set(XID *xid)
00041 {
00042 memcpy(this, xid, xid->length());
00043 }
00044
00045 void XID::set(long f, const char *g, long gl, const char *b, long bl)
00046 {
00047 formatID= f;
00048 memcpy(data, g, gtrid_length= gl);
00049 memcpy(data+gl, b, bqual_length= bl);
00050 }
00051
00052 void XID::set(uint64_t xid)
00053 {
00054 formatID= 1;
00055 set(DRIZZLE_XID_PREFIX_LEN, 0, DRIZZLE_XID_PREFIX);
00056 memcpy(data + DRIZZLE_XID_PREFIX_LEN, &server_id, sizeof(server_id));
00057 my_xid tmp= xid;
00058 memcpy(data + DRIZZLE_XID_OFFSET, &tmp, sizeof(tmp));
00059 gtrid_length= DRIZZLE_XID_GTRID_LEN;
00060 }
00061
00062 void XID::set(long g, long b, const char *d)
00063 {
00064 formatID= 1;
00065 gtrid_length= g;
00066 bqual_length= b;
00067 memcpy(data, d, g+b);
00068 }
00069
00070 bool XID::is_null()
00071 {
00072 return formatID == -1;
00073 }
00074
00075 void XID::null()
00076 {
00077 formatID= -1;
00078 }
00079
00080 my_xid XID::quick_get_my_xid()
00081 {
00082 my_xid tmp;
00083 memcpy(&tmp, data + DRIZZLE_XID_OFFSET, sizeof(tmp));
00084 return tmp;
00085 }
00086
00087 my_xid XID::get_my_xid()
00088 {
00089 return gtrid_length == DRIZZLE_XID_GTRID_LEN && bqual_length == 0 &&
00090 !memcmp(data+DRIZZLE_XID_PREFIX_LEN, &server_id, sizeof(server_id)) &&
00091 !memcmp(data, DRIZZLE_XID_PREFIX, DRIZZLE_XID_PREFIX_LEN) ?
00092 quick_get_my_xid() : 0;
00093 }
00094
00095 uint32_t XID::length() const
00096 {
00097 return sizeof(formatID)+sizeof(gtrid_length)+sizeof(bqual_length)+
00098 gtrid_length+bqual_length;
00099 }
00100
00101 const unsigned char *XID::key() const
00102 {
00103 return (unsigned char *)>rid_length;
00104 }
00105
00106 uint32_t XID::key_length() const
00107 {
00108 return sizeof(gtrid_length)+sizeof(bqual_length)+gtrid_length+bqual_length;
00109 }
00110
00111 }