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more reading and writing of toy db

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git-svn-id: svn://10.0.0.236/trunk@22042 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
bienvenu%netscape.com
1999-02-26 03:25:16 +00:00
parent b3ecd2c6b5
commit 05158a78f0
3 changed files with 133 additions and 27 deletions
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13
mozilla/db/mdb/public/mdb.h
View File

@@ -1225,7 +1225,7 @@ public:
// { ----- begin ID methods -----
mdb_err GetOid(nsIMdbEnv* ev,
const mdbOid* outOid) ; // read object identity
mdbOid* outOid) ; // read object identity
mdb_err BecomeContent(nsIMdbEnv* ev,
const mdbOid* inOid) {m_Oid = *inOid; return 0;} // exchange content
// } ----- end ID methods -----
@@ -1647,12 +1647,14 @@ public:
// } ===== end nsIMdbRow methods =====
// mdb stub hacks.
nsIMdbRow(nsIMdbTable *owningTable, nsIMdbStore *owningStore);
nsIMdbRow(nsIMdbTable *owningTable, nsIMdbPort *owningPort);
MDBCellArray m_cells;
mdbOid m_oid;
nsIMdbTable *m_owningTable;
nsIMdbStore *m_owningStore;
nsIMdbPort *m_owningPort;
mdb_err Write(nsIOFileStream *);
mdb_err Read(nsIOFileStream *);
};
@@ -1847,6 +1849,7 @@ class nsIMdbCell : public nsIMdbBlob { // text attribute in row with column scop
// } ----- end children methods -----
// } ===== end nsIMdbCell methods =====
};
// } %%%%% end C++ abstract class interfaces %%%%%
@@ -1861,6 +1864,10 @@ public:
mdb_column m_column;
PRBool Equals(const mdbCellImpl& other);
char *m_cellValue;
// mdb stubs hackery
mdb_err Write(nsIOFileStream *);
mdb_err Read(nsIOFileStream *);
};

13
mozilla/mailnews/db/mdb/public/mdb.h
View File

@@ -1225,7 +1225,7 @@ public:
// { ----- begin ID methods -----
mdb_err GetOid(nsIMdbEnv* ev,
const mdbOid* outOid) ; // read object identity
mdbOid* outOid) ; // read object identity
mdb_err BecomeContent(nsIMdbEnv* ev,
const mdbOid* inOid) {m_Oid = *inOid; return 0;} // exchange content
// } ----- end ID methods -----
@@ -1647,12 +1647,14 @@ public:
// } ===== end nsIMdbRow methods =====
// mdb stub hacks.
nsIMdbRow(nsIMdbTable *owningTable, nsIMdbStore *owningStore);
nsIMdbRow(nsIMdbTable *owningTable, nsIMdbPort *owningPort);
MDBCellArray m_cells;
mdbOid m_oid;
nsIMdbTable *m_owningTable;
nsIMdbStore *m_owningStore;
nsIMdbPort *m_owningPort;
mdb_err Write(nsIOFileStream *);
mdb_err Read(nsIOFileStream *);
};
@@ -1847,6 +1849,7 @@ class nsIMdbCell : public nsIMdbBlob { // text attribute in row with column scop
// } ----- end children methods -----
// } ===== end nsIMdbCell methods =====
};
// } %%%%% end C++ abstract class interfaces %%%%%
@@ -1861,6 +1864,10 @@ public:
mdb_column m_column;
PRBool Equals(const mdbCellImpl& other);
char *m_cellValue;
// mdb stubs hackery
mdb_err Write(nsIOFileStream *);
mdb_err Read(nsIOFileStream *);
};

134
mozilla/mailnews/db/msgdb/src/mdbstubs.cpp
View File

@@ -274,25 +274,58 @@ mdb_err nsIMdbTable::HasOid( // test for the table position of a row member
return 0;
}
const char *kStartRowList = "start row list"LINEBREAK;
const char *kEndRowList = "end row list"LINEBREAK;
mdb_err nsIMdbTable::Write()
mdb_err nsIMdbTable::Write()
{
nsIOFileStream *stream = m_owningPort->m_fileStream;
*stream << m_kind;
*stream << ",";
*stream << (long) m_rows.Count();
*stream << LINEBREAK;
{
nsIOFileStream *stream = m_owningPort->m_fileStream;
*stream << m_kind;
*stream << kStartRowList;
PRInt32 i;
PRInt32 i;
for (i = 0; i < m_rows.Count(); i++)
{
for (i = 0; i < m_rows.Count(); i++)
{
mdb_pos iteratePos;
}
for (iteratePos = 0; iteratePos < m_rows.Count(); iteratePos++)
{
nsIMdbRow *row = (nsIMdbRow *) m_rows.ElementAt(iteratePos);
if (row)
row->Write(stream);
}
}
return 0;
}
*stream << kEndRowList;
return 0;
}
mdb_err nsIMdbTable::Read()
{
char lineBuf[100];
nsIOFileStream *stream = m_owningPort->m_fileStream;
stream->readline(lineBuf, sizeof(lineBuf));
m_kind = atoi(lineBuf);
char *p;
for (p = lineBuf; *p; p++)
{
if (*p == ',')
break;
}
PRInt32 numRows = atoi(p + 1);
for (PRInt32 i = 0; i < numRows; i++)
{
nsIMdbRow *row = new nsIMdbRow(this, m_owningPort);
if (row)
row->Read(stream);
}
return 0;
}
mdb_err nsIMdbTableRowCursor::SetTable(nsIMdbEnv* ev, nsIMdbTable* ioTable)
{
@@ -340,10 +373,10 @@ mdb_err nsIMdbTable::AddRow ( // make sure the row with inOid is a table member
return 0;
}
nsIMdbRow::nsIMdbRow(nsIMdbTable *owningTable, nsIMdbStore *owningStore)
nsIMdbRow::nsIMdbRow(nsIMdbTable *owningTable, nsIMdbPort *owningPort)
{
m_owningTable = owningTable;
m_owningStore = owningStore;
m_owningPort = owningPort;
}
mdb_err nsIMdbRow::AddColumn( // make sure a particular column is inside row
@@ -351,14 +384,13 @@ mdb_err nsIMdbRow::AddColumn( // make sure a particular column is inside row
mdb_column inColumn, // column to add
const mdbYarn* inYarn)
{
// evilly, I happen to know the column token is a char * const str pointer.
char *columnName;
if (m_owningStore)
if (m_owningPort)
{
nsString columnStr;
m_owningStore->m_tokenStrings.StringAt(inColumn, columnStr);
m_owningPort->m_tokenStrings.StringAt(inColumn, columnStr);
columnName = columnStr.ToNewCString();
printf("adding column %s : %s\n", columnName, inYarn->mYarn_Buf);
@@ -402,9 +434,42 @@ mdb_err nsIMdbRow::GetCell( // find a cell in this row
return 0;
}
mdb_err nsIMdbCollection::GetOid (nsIMdbEnv* ev,
const mdbOid* outOid)
mdb_err nsIMdbRow::Write(nsIOFileStream *stream)
{
mdb_pos iteratePos;
// write out the number of cells.
*stream << (long) m_cells.Count();
for (iteratePos = 0; iteratePos < m_cells.Count(); iteratePos++)
{
mdbCellImpl *cell = (mdbCellImpl *) m_cells.ElementAt(iteratePos);
if (cell)
cell->Write(stream);
}
return 0;
}
mdb_err nsIMdbRow::Read(nsIOFileStream *stream)
{
char numCellsBuf[30];
stream->readline(numCellsBuf, sizeof(numCellsBuf));
PRInt32 numCells = atoi(numCellsBuf);
for (PRInt32 i = 0; i < numCells; i++)
{
mdbCellImpl *cell = new mdbCellImpl;
if (cell)
cell->Read(stream);
}
return 0;
}
mdb_err nsIMdbCollection::GetOid (nsIMdbEnv* ev,
mdbOid* outOid)
{
*outOid = m_Oid;
return 0;
}
@@ -491,6 +556,33 @@ PRBool mdbCellImpl::Equals(const mdbCellImpl& other)
return (m_column == other.m_column);
}
mdb_err mdbCellImpl::Write(nsIOFileStream *stream)
{
*stream << m_column;
*stream << "=";
*stream << m_cellValue;
*stream << LINEBREAK;
return 0;
}
const int kLineBufLength = 400;
mdb_err mdbCellImpl::Read(nsIOFileStream *stream)
{
char line[kLineBufLength];
stream->readline(line, kLineBufLength);
m_column = atoi(line);
char *p;
for (p = line; *p; p++)
{
if (*p == '=')
break;
}
m_cellValue = strdup(p + 1);
return 0;
}
mdb_err mdbCellImpl::AliasYarn(nsIMdbEnv* ev,
mdbYarn* outYarn)