<wx/db.h>
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
\wxheading{Helper classes and data structures}
The following classes and structs are defined in db.cpp/.h for use with the wxDb class.
These are the databases currently tested and working with the ODBC classes. A call to \helpref{wxDb::Dbms}{wxdbdbms} will return one of these enumerated values listed below.
-\begin{verbatim}
- dbmsUNIDENTIFIED
- dbmsORACLE
- dbmsSYBASE_ASA // Adaptive Server Anywhere
- dbmsSYBASE_ASE // Adaptive Server Enterprise
- dbmsMS_SQL_SERVER
- dbmsMY_SQL
- dbmsPOSTGRES
- dbmsACCESS
- dbmsDBASE
- dbmsINFORMIX
- dbmsVIRTUOSO
- dbmsDB2
- dbmdINTERBASE
-\end{verbatim}
+\begin{itemize}\itemsep=0pt
+\item DB2
+\item DBase (IV, V)**
+\item Firebird
+\item INFORMIX
+\item Interbase
+\item MS SQL Server (v7 - minimal testing)
+\item MS Access (97, 2000, 2002, and 2003)
+\item MySQL (2.x and 3.5 - use the 2.5x drivers though)
+\item Oracle (v7, v8, v8i)
+\item Pervasive SQL
+\item PostgreSQL
+\item Sybase (ASA and ASE)
+\item XBase Sequiter
+\item VIRTUOSO
+\end{itemize}
See the remarks in \helpref{wxDb::Dbms}{wxdbdbms} for exceptions/issues with each of these database engines.
\wxheading{Remarks}
Default cursor scrolling is defined by wxODBC\_FWD\_ONLY\_CURSORS in setup.h
-when the wxWindows library is built. This behavior can be overridden when
-an instance of a wxDb is created (see \helpref{wxDb constructor}{wxdbconstr}).
+when the wxWidgets library is built. This behavior can be overridden when
+an instance of a wxDb is created (see \helpref{wxDb constructor}{wxdbctor}).
Default setting of this value true, as not all databases/drivers support
both types of cursors.
The wxDb instance returned is also opened (see \helpref{wxDb::Open}{wxdbopen}).
This function (along with wxDbFreeConnection() and wxDbCloseConnection())
-maintain a cached of wxDb instances for user/re-use by a program. When a
+maintain a cache of wxDb instances for user/re-use by a program. When a
program needs a wxDb instance, it may call this function to obtain a wxDb
instance. If there is a wxDb instance in the cache that is currently unused
that matches the connection requirements specified in {\it'pDbConfig'} then
\func{const wxChar *}{wxDbLogExtendedErrorMsg}{\param{const wxChar *}{userText}, \param{wxDb *}{pDb}, \param{wxChar *}{ErrFile}, \param{int }{ErrLine}}
Writes a message to the wxLog window (stdout usually) when an internal
-error situation occurs. This function only works in DEBUG builds
+error situation occurs.
\func{bool}{wxDbSqlLog}{\param{wxDbSqlLogState }{state}, \param{const wxString \&}{filename = SQL\_LOG\_FILENAME}}
available through the ODBC driver manager on the current workstation.
\begin{verbatim}
- wxStringList strList;
+ wxArrayString strArray;
while (wxDbGetDataSource(DbConnectInf.GetHenv(), Dsn, SQL_MAX_DSN_LENGTH+1, DsDesc, 255))
- strList.Add(Dsn);
+ strArray.Add(Dsn);
\end{verbatim}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxDb::wxDb}\label{wxdbconstr}
+\membersection{wxDb::wxDb}\label{wxdbctor}
\func{}{wxDb}{\void}
\begin{verbatim}
// Incomplete code sample
db.CreateView("PARTS_SD1", "PN, PD, QTY",
- "SELECT PART_NO, PART_DESC, QTY_ON_HAND * 1.1 FROM PARTS \
+ "SELECT PART_NUM, PART_DESC, QTY_ON_HAND * 1.1 FROM PARTS \
WHERE STORAGE_DEVICE = 1");
// PARTS_SD1 can now be queried just as if it were a data table.
\helpref{Enumerated types}{wxdbenumeratedtypes} section of wxDb.
There are known issues with conformance to the ODBC standards with several
-datasources supported by the wxWindows ODBC classes. Please see the overview
+datasources supported by the wxWidgets ODBC classes. Please see the overview
for specific details on which datasource have which issues.
\wxheading{Return value}
If the view does not exist, this function will return true. Note that views are not supported with all datasources.
+\membersection{wxDb::EscapeSqlChars}\label{wxdbescapesqlchars}
+
+\func{wxString}{EscapeSqlChars}{\param{const wxString\& }{value}}
+
+This function is used internally by wxWidgets while building SQL statements.
+It has been provided to help users who wish to explicity construct SQL
+statements to be sent to the server. The function takes the value passed and
+returns it with any special characters escaped. Which characters are
+considered special depends on what type of datasource the object is connected
+to. For example, most database servers use a backslash as the escape
+character; if the value passed contains a backlash it will be replaced with a
+double backslash before it is passed to the server. This function can be used
+to avoid passing statements with syntax errors to the server as well as prevent
+SQL injection attacks.
+
+\wxheading{Parameters}
+
+\docparam{value}{The value to be escaped.}
+
\membersection{wxDb::ExecSql}\label{wxdbexecsql}
\func{bool}{ExecSql}{\param{const wxString \&}{pSqlStmt}}
+\func{bool}{ExecSql}{\param{const wxString \&}{pSqlStmt}, \param{wxDbColInf **}{columns}, \param{short \&}{numcols}}
+
Allows a native SQL command to be executed directly against the datasource. In addition to being able to run any standard SQL command, use of this function allows a user to (potentially) utilize features specific to the datasource they are connected to that may not be available through ODBC. The ODBC driver will pass the specified command directly to the datasource.
+To get column amount and column names or other information about returned columns, pass {\it 'columns'} and {\it 'numcols'} parameters to the function also.
+
\wxheading{Parameters}
\docparam{pSqlStmt}{Pointer to the SQL statement to be executed.}
+\docparam{columns}{On success, this function will set this pointer to point to array of \helpref{wxDbColInf}{wxdbcolinf} objects, holding information about columns returned by the query. You need to call delete[] for the pointer you pass here after you don't use it anymore to prevent memory leak.}
+
+\docparam{numcols}{Reference to variable where amount of objects in {\it 'columns'}-parameter will be set.}
+
\wxheading{Remarks}
This member extends the wxDb class and allows you to build and execute ANY VALID
\func{bool}{IsFwdOnlyCursors}{\void}
-Older form (pre-2.3/2.4 of wxWindows) of the
+Older form (pre-2.3/2.4 of wxWidgets) of the
\helpref{wxDb::IsFwdOnlyCursors}{wxdbisfwdonlycursors}. This method is
provided for backward compatibility only. The method
\helpref{wxDb::IsFwdOnlyCursors}{wxdbisfwdonlycursors} should be
\membersection{wxDb::GetData}\label{wxdbgetdata}
-\func{bool}{GetData}{\param{UWORD}{ colNo}, \param{SWORD}{ cType},
+\func{bool}{GetData}{\param{UWORD}{ colNumber}, \param{SWORD}{ cType},
\param{PTR}{ pData}, \param{SDWORD}{ maxLen}, \param{SDWORD FAR *}{ cbReturned} }
Used to retrieve result set data without binding column values to memory
\wxheading{Parameters}
-\docparam{colNo}{Ordinal number of the desired column in the result set to be
+\docparam{colNumber}{Ordinal number of the desired column in the result set to be
returned.}
\docparam{cType}{The C data type that is to be returned. See a partial list
in \helpref{wxDbTable::SetColDefs}{wxdbtablesetcoldefs}}
\membersection{wxDb::GetKeyFields}\label{wxdbgetkeyfields}
-\func{int }{GetKeyFields}{\param{const wxString \&}{tableName}, \param{wxDbColInf *}{colInf}, \param{UWORD }{nocols}}
+\func{int }{GetKeyFields}{\param{const wxString \&}{tableName}, \param{wxDbColInf *}{colInf}, \param{UWORD }{numColumns}}
Used to determine which columns are members of primary or non-primary indexes on the specified table. If a column is a member of a foreign key for some other table, that information is detected also.
\docparam{tableName}{Name of the table for which the columns will be evaluated as to their inclusion in any indexes.}
\docparam{colInf}{Data structure containing the column definitions (obtained with \helpref{wxDb::GetColumns}{wxdbgetcolumns}). This function populates the PkCol, PkTableName, and FkTableName members of the colInf structure.}
-\docparam{nocols}{Number of columns defined in the instance of colInf.}
+\docparam{numColumns}{Number of columns defined in the instance of colInf.}
\wxheading{Return value}
forward-only or also backward scrolling cursors is defined in setup.h by the
value of wxODBC\_FWD\_ONLY\_CURSORS. This default setting can be overridden
when the wxDb connection is initially created (see
-\helpref{wxDb constructor}{wxdbconstr} and \helpref{wxDbGetConnection}{wxdbfunctions}).
+\helpref{wxDb constructor}{wxdbctor} and \helpref{wxDbGetConnection}{wxdbfunctions}).
\wxheading{Return value}
\wxheading{Remarks}
-Added as of wxWindows v2.4 release, this function is a renamed version of
-wxDb::FwdOnlyCursors() to match the normal wxWindows naming conventions for
+Added as of wxWidgets v2.4 release, this function is a renamed version of
+wxDb::FwdOnlyCursors() to match the normal wxWidgets naming conventions for
class member functions.
This function is not available in versions prior to v2.4. You should
-use \helpref{wxDb::FwdOnlyCursors}{wxdbfwdonlycursors} for wxWindows
+use \helpref{wxDb::FwdOnlyCursors}{wxdbfwdonlycursors} for wxWidgets
versions prior to 2.4.
\wxheading{See also}
-\helpref{wxDb constructor}{wxdbconstr}, \helpref{wxDbGetConnection}{wxdbfunctions}
+\helpref{wxDb constructor}{wxdbctor}, \helpref{wxDbGetConnection}{wxdbfunctions}
\membersection{wxDb::IsOpen}\label{wxdbisopen}
\membersection{wxDb::Open}\label{wxdbopen}
\func{bool}{Open}{\param{const wxString \&}{Dsn}, \param{const wxString \&}{Uid},
-\param{const wxString \&}{AuthStr}}
+\param{const wxString \&}{AuthStr}, \param{bool }{failOnDataTypeUnsupported}}
+
+\func{bool}{Open}{\param{const wxString \&}{inConnectStr},
+\param{bool }{failOnDataTypeUnsupported}}
+
+\func{bool}{Open}{\param{wxDbConnectInf *}{dbConnectInf},
+\param{bool }{failOnDataTypeUnsupported}}
\func{bool}{Open}{\param{wxDb *}{copyDb}}
objects and so on. Users and privileges are normally administered by the
database administrator.}
\docparam{AuthStr}{The password associated with the Uid.}
-\docparam{copyDb}{Already completely configured and opened datasource connection
-from which all Dsn, Uid, AuthStr, and data typing information is to be copied
-from for use by this datasource connection.}
+\docparam{failOnDataTypeUnsupporte}{As part of connecting to a database, the
+wxDb::Open() function will query the database to find out the native types
+that it supports. With some databases, some data types may not be supported,
+or not sufficiently supported, for use with the wxODBC classes. Normally
+a program should fail in this case, so as not to try to use a data type
+that is not supported. This parameter allows the programmer to override the
+failure if they wish and continue on using the connection.}
+\docparam{dbConnectInf}{Contains a DSN, Uid, Password, or a connection string
+to be used in opening a new connection to the database. If a connection
+string is present, then the connection string will be used. If there is no
+connection string present, then the DSN, Uid, and Password are used.}
+\docparam{inConnectStr}{A valid ODBC connection string used to connect to a
+database}
+\docparam{copyDb}{Already completely configured and opened datasource
+connection from which all Dsn, Uid, AuthStr, connection string, and data
+typing information is to be copied from for use by this datasource
+connection. If 'copyDb' used a connection string to create its connection
+originally, then the connection being made by this call to wxDb::Open() will
+use that same connection string.}
\wxheading{Remarks}
\wxheading{See also}
-\helpref{wxDb constructor}{wxdbconstr}
+\helpref{wxDb constructor}{wxdbctor}
\membersection{wxDb::SetSqlLogging}\label{wxdbsetsqllogging}
\membersection{wxDb::SQLColumnName}\label{wxdbsqlcolumnname}
-\func{const wxString}{SQLColumnName}{\param{const char *}{ colName}}
+\func{const wxString}{SQLColumnName}{\param{const wxChar *}{ colName}}
Returns the column name in a form ready for use in SQL statements.
In most cases, the column name is returned verbatim. But some databases
\membersection{wxDb::SQLTableName}\label{wxdbsqltablename}
-\func{const wxString}{SQLTableName}{\param{const char *}{ tableName}}
+\func{const wxString}{SQLTableName}{\param{const wxChar *}{ tableName}}
Returns the table name in a form ready for use in SQL statements.
In most cases, the table name is returned verbatim. But some databases
\docparam{tableName}{Name of the table on which to check privileges.
{\it tableName} may refer to a table, view, alias or synonym.}
\docparam{priv}{The table privilege being evaluated. May be one of the
-following (or a datasource specific privilege):
+following (or a datasource specific privilege):}
\begin{verbatim}
SELECT : The connected user is permitted to retrieve data for
example, a unique, referential, or table check
constraint).
\end{verbatim}
-}
+
\docparam{userID}{{\it OPTIONAL.} User for which to determine if the privilege
specified to be checked is granted or not. Default is "".
-{\it userID} is evaluated as follows:
+{\it userID} is evaluated as follows:}
\begin{verbatim}
userID == NULL ... NOT ALLOWED!
userID == "" ... UserID set equal to 'this->uid'
userID != "" ... UserID set equal to 'userID'
\end{verbatim}
-}
+
\docparam{schema}{{\it OPTIONAL.} Owner of the table. Specify a userID when the datasource
you are connected to allows multiple unique tables with the same name to be
owned by different users. Specifying the table owner makes determination of the
-users privileges MUCH faster. Default is NULL. {\it userID} is evaluated as follows:
+users privileges MUCH faster. Default is NULL. {\it userID} is
+evaluated as follows:}
\begin{verbatim}
schema == NULL ... Any owner (DEFAULT)
schema == "" ... Owned by 'this->uid'
schema != "" ... Owned by userID specified in 'schema'
\end{verbatim}
-}
+
\docparam{path}{{\it OPTIONAL.} Path to the table. Default is "".
Currently unused.}
instance of a wxDbTable object.
Each instance of this class describes one column in the wxDbTable
-object. When calling the \helpref{wxDb constructor}{wxdbconstr}, a
+object. When calling the \helpref{wxDb constructor}{wxdbctor}, a
parameter passed in indicates the number of columns that will be defined for
the wxDbTable object. The constructor uses this information to allocate
adequate memory for all of the column descriptions in your wxDbTable object.
\wxheading{See also}
\helpref{database classes overview}{odbcoverview},
-\helpref{wxDbTable::GetColDefs}{wxdbtablegetcoldefs}, \helpref{wxDb constructor}{wxdbconstr}
+\helpref{wxDbTable::GetColDefs}{wxdbtablegetcoldefs}, \helpref{wxDb constructor}{wxdbctor}
+
+\wxheading{Include files}
+
+<wx/db.h>
+
+\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxDbColDef::Initialize}\label{wxdbcoldefinitialize}
and floats.
\begin{verbatim}
- wxString s_Field; // Formated String for Output
- wxString s_Format[7]; // Formated Objects - TIMESTAMP has
+ wxString s_Field; // Formatted String for Output
+ wxString s_Format[7]; // Formatted Objects - TIMESTAMP has
the biggest (7)
- wxString s_Amount[7]; // Formated Objects - amount of
+ wxString s_Amount[7]; // Formatted Objects - amount of
things that can be formatted
- int i_Amount[7]; // Formated Objects -
+ int i_Amount[7]; // Formatted Objects -
TT MM YYYY HH MM SS m
int i_Nation; // 0 = timestamp
1 = EU
See the \helpref{database classes overview}{odbcoverview} for
an introduction to using the ODBC classes.
+\wxheading{Include files}
+
+<wx/db.h>
+
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
\membersection{wxDbColFor::Format}\label{wxdbcolforformat}
\func{int }{Format}{\param{int }{Nation}, \param{int }{dbDataType},
See the \helpref{database classes overview}{odbcoverview} for
an introduction to using the ODBC classes.
+\wxheading{Include files}
+
+<wx/db.h>
+
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
\membersection{wxDbColInf::Initialize}\label{wxdbcolinfinitialize}
Simply initializes all member variables to a cleared state. Called by
optional fields held in this class are and file type, both for future
functions planned to be added for creating/manipulating datasource definitions.
-\membersection{wxDbConnectInf::wxDbConnectInf}
+\membersection{wxDbConnectInf::wxDbConnectInf}\label{wxdbconnectinfctor}
\func{}{wxDbConnectInf}{\void}
\wxheading{Parameters}
-\docparam{henv}{Environment handle used for this connection. See
+\docparam{henv}{Environment handle used for this connection. See\rtfsp
\helpref{wxDConnectInf::AllocHenv}{wxdbconnectinfallochenv} for how to create
an SQL environment handle. NOTE: Passing in a NULL for this parameter will
inform the constructor that it should create its own SQL environment handle.
-If NULL is passed for this parameter, the constructor will call
+If NULL is passed for this parameter, the constructor will call\rtfsp
\helpref{wxDConnectInf::AllocHenv}{wxdbconnectinfallochenv} internally. A
flag is set internally also to indicate that the HENV was created by the
constructor so that when the default class destructor is called, the
-destructor will call \helpref{wxDConnectInf::FreeHenv}{wxdbconnectinffreehenv}
+destructor will call \helpref{wxDConnectInf::FreeHenv}{wxdbconnectinffreehenv}\rtfsp
to free the environment handle automatically.}
\docparam{dsn}{Name of the datasource to be used in creating wxDb instances
for creating connection(s) to a datasource.}
Handles the default destruction of the instance of the class. If the long form
of the \helpref{wxDConnectInf}{wxdbconnectinf} was used, then this destructor
-also takes care of calling
+also takes care of calling\rtfsp
\helpref{wxDConnectInf::FreeHenv}{wxdbconnectinffreehenv} to free the
SQL environment handle.
\wxheading{Remarks}
-If the SQL environment handle was created using the long form of the
+If the SQL environment handle was created using the long form of the\rtfsp
\helpref{wxDbConnectInf}{wxdbconnectinf} constructor, then the flag indicating
that the HENV should be destroyed when the classes destructor is called
-is reset to be false, so that any future handles created using the
+is reset to be false, so that any future handles created using the\rtfsp
\helpref{wxDbConnectInf::AllocHenv}{wxdbconnectinfallochenv} function
must be manually released with a call to this function.
See the \helpref{database classes overview}{odbcoverview} for
an introduction to using the ODBC classes.
+
+\wxheading{Include files}
+
+<wx/db.h>
+
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
\section{\class{wxDbInf}}\label{wxdbinf}
Contains information regarding the database connection (datasource name,
information about all tables in the datasource to have all the datasource's
information in one memory structure.
-Primarily, this class is used internally by the wxWindows ODBC classes.
+Primarily, this class is used internally by the wxWidgets ODBC classes.
\begin{verbatim}
wxChar catalog[128+1];
See the \helpref{database classes overview}{odbcoverview} for
an introduction to using the ODBC classes.
+\wxheading{Include files}
+
+<wx/db.h>
+
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
\membersection{wxDbInf::Initialize}\label{wxdbinfinitialize}
Simply initializes all member variables to a cleared state. Called by
<wx/dbtable.h>\\
<wx/db.h>
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
\latexignore{\rtfignore{\wxheading{Members}}}
\wxheading{Helper classes and data structures}
Constructs the full SQL statement that can be used to update all rows matching
the criteria in the pWhereClause.
-If typeOfUpd is DB\_UPD\_KEYFIELDS, then the current values in the bound columns
+If typeOfUpdate is DB\_UPD\_KEYFIELDS, then the current values in the bound columns
are used to determine which row(s) in the table are to be updated. The
exception to this is when a datasource supports ROW IDs (Oracle). The ROW ID
column is used for efficiency purposes when available.
\docparam{pSqlStmt}{Pointer to storage for the SQL statement retrieved. To be
sure you have adequate space allocated for the SQL statement, allocate
DB\_MAX\_STATEMENT\_LEN bytes.}
-\docparam{typeOfUpd}{The type of update statement being performed. Can be one
+\docparam{typeOfUpdate}{The type of update statement being performed. Can be one
of two values: DB\_UPD\_KEYFIELDS or DB\_UPD\_WHERE.}
-\docparam{pWhereClause}{{\it OPTIONAL}. If the typeOfUpd is DB\_UPD\_WHERE,
+\docparam{pWhereClause}{{\it OPTIONAL}. If the typeOfUpdate is DB\_UPD\_WHERE,
then you must also pass in a SQL WHERE clause in this argument. Default is "".}
\wxheading{Remarks}
and \helpref{wxDbTable::SetFromClause}{wxdbtablesetfromclause} are ignored by
this function.
-\membersection{wxDbTable::BuildWhereStmt}\label{wxdbtablebuildwherestmt}
-\func{void}{BuildSelectStmt}{\param{wxString \&}{pWhereClause},
+\membersection{wxDbTable::BuildWhereClause}\label{wxdbtablebuildwhereclause}
+
+\func{void}{BuildWhereClause}{\param{wxString \&}{pWhereClause},
\param{int }{typeOfWhere}, \param{const wxString \&}{qualTableName=""},
\param{bool }{useLikeComparison=false}}
containing a NULL value are not included in the WHERE clause's list of
columns to use in the comparison.
+
\membersection{wxDbTable::CanSelectForUpdate}\label{wxdbtablecanselectforupdate}
\func{bool}{CanSelectForUpdate}{\void}
// Incomplete code sample
wxDbTable parts;
.....
- if (parts.CanUpdByROWID())
+ if (parts.CanUpdateByROWID())
{
// Note that the ROWID column must always be the last column selected
- sqlStmt = "SELECT PART_NO, PART_DESC, ROWID" FROM PARTS";
+ sqlStmt = "SELECT PART_NUM, PART_DESC, ROWID" FROM PARTS";
}
else
- sqlStmt = "SELECT PART_NO, PART_DESC FROM PARTS";
+ sqlStmt = "SELECT PART_NUM, PART_DESC FROM PARTS";
\end{verbatim}
\membersection{wxDbTable::ClearMemberVar}\label{wxdbtableclearmembervar}
-\func{void}{ClearMemberVar}{\param{UWORD }{colNo}, \param{bool }{setToNull=false}}
+\func{void}{ClearMemberVar}{\param{UWORD }{colNumber}, \param{bool }{setToNull=false}}
Same as \helpref{wxDbTable::ClearMemberVars}{wxdbtableclearmembervars} except
that this function clears only the specified column of its values, and
optionally sets the column to be a NULL column.
-\docparam{colNo}{Column number that is to be cleared. This number (between 0
-and (noCols-1)) is the index of the column definition created using the
+\docparam{colNumber}{Column number that is to be cleared. This number (between 0
+and (numColumns-1)) is the index of the column definition created using the
\helpref{wxDbTable::SetColDefs}{wxdbtablesetcoldefs} function.}
\docparam{setToNull}{{\it OPTIONAL}. Indicates whether the column should be
flagged as being a NULL value stored in the bound memory variable. If true,
\membersection{wxDbTable::CreateIndex}\label{wxdbtablecreateindex}
-\func{bool}{CreateIndex}{\param{const wxString \&}{idxName}, \param{bool }{unique},
-\param{UWORD }{noIdxCols}, \param{wxDbIdxDef *}{pIdxDefs},
+\func{bool}{CreateIndex}{\param{const wxString \&}{IndexName}, \param{bool }{unique},
+\param{UWORD }{numIndexColumns}, \param{wxDbIdxDef *}{pIndexDefs},
\param{bool }{attemptDrop=true}}
-This member function allows you to create secondary (non primary) indexes on
+This member function allows you to create secondary (non-primary) indexes on
your tables. You first create your table, normally specifying a primary
index, and then create any secondary indexes on the table. Indexes in
relational model are not required. You do not need indexes to look up records
\wxheading{Parameters}
-\docparam{idxName}{Name of the Index. Name must be unique within the table
+\docparam{IndexName}{Name of the Index. Name must be unique within the table
space of the datasource.}
\docparam{unique}{Indicates if this index is unique.}
-\docparam{noIdxCols}{Number of columns in the index.}
-\docparam{pIdxDefs}{A pointer to an array wxDbIdxDef structures. }
+\docparam{numIndexColumns}{Number of columns in the index.}
+\docparam{pIndexDefs}{A pointer to an array \helpref{wxDbIdxDef}{wxdbidxdef} structures. }
\docparam{attemptDrop}{{\it OPTIONAL}. Indicates if the function should try
to execute a \helpref{wxDbTable::DropIndex}{wxdbtabledropindex} on the index
name provided before trying to create the index name. Default is true.}
The first parameter, index name, must be unique and should be given a
meaningful name. Common practice is to include the table name as a prefix
in the index name (e.g. For table PARTS, you might want to call your index
-PARTS\_IDX1). This will allow you to easily view all
+PARTS\_Index1). This will allow you to easily view all
of the indexes defined for a given table grouped together alphabetically.
The second parameter indicates if the index is unique or not. Uniqueness
uniqueness.
In the third parameter, specify how many columns are in your index. This
-number must match the number of columns defined in the 'pIdxDefs' parameter.
+number must match the number of columns defined in the 'pIndexDefs' parameter.
The fourth parameter specifies which columns make up the index using the
-wxDbIdxDef structure. For each column in the index, you must specify two
+\helpref{wxDbIdxDef}{wxdbidxdef} structure. For each column in the index, you must specify two
things, the column name and the sort order (ascending / descending). See
-the example below to see how to build and pass in the wxDbIdxDef structure.
+the example below to see how to build and pass in the \helpref{wxDbIdxDef}{wxdbidxdef} structure.
The fifth parameter is provided to handle the differences in datasources as
to whether they will automatically overwrite existing indexes with the same
\begin{verbatim}
// Create a secondary index on the PARTS table
- wxDbIdxDef idxDef[2]; // 2 columns make up the index
+ wxDbIdxDef IndexDef[2]; // 2 columns make up the index
- wxStrcpy(idxDef[0].ColName, "PART_DESC"); // Column 1
- idxDef[0].Ascending = true;
+ wxStrcpy(IndexDef[0].ColName, "PART_DESC"); // Column 1
+ IndexDef[0].Ascending = true;
- wxStrcpy(idxDef[1].ColName, "SERIAL_NO"); // Column 2
- idxDef[1].Ascending = false;
+ wxStrcpy(IndexDef[1].ColName, "SERIAL_NO"); // Column 2
+ IndexDef[1].Ascending = false;
// Create a name for the index based on the table's name
wxString indexName;
- indexName.Printf("%s_IDX1",parts->GetTableName());
- parts->CreateIndex(indexName, true, 2, idxDef);
+ indexName.Printf("%s_Index1",parts->GetTableName());
+ parts->CreateIndex(indexName, true, 2, IndexDef);
\end{verbatim}
\membersection{wxDbTable::CreateTable}\label{wxdbtablecreatetable}
\membersection{wxDbTable::DropIndex}\label{wxdbtabledropindex}
-\func{bool}{DropIndex}{\param{const wxString \&}{idxName}}
+\func{bool}{DropIndex}{\param{const wxString \&}{IndexName}}
Allows an index on the associated table to be dropped (deleted) if the user
login has sufficient privileges to do so.
\wxheading{Parameters}
-\docparam{idxName}{Name of the index to be dropped.}
+\docparam{IndexName}{Name of the index to be dropped.}
\wxheading{Remarks}
-If the index specified in the 'idxName' parameter does not exist, an error
+If the index specified in the 'IndexName' parameter does not exist, an error
will be logged, and the function will return a result of false.
It is not necessary to call \helpref{wxDb::CommitTrans}{wxdbcommittrans}
\wxheading{Parameters}
-\docparam{From}{A comma separated list of table names that are to be outer
+\docparam{From}{A comma separated list of table names that are to be inner
joined with the base table's columns so that the joined table's columns
may be returned in the result set or used as a portion of a comparison with
the base table's columns. NOTE that the base tables name must NOT be included
\membersection{wxDbTable::IsColNull}\label{wxdbtableiscolnull}
-\func{bool }{IsColNull}{\param{UWORD }{colNo}} const
+\func{bool }{IsColNull}{\param{UWORD }{colNumber}} const
Used primarily in the ODBC class library to determine if a column value is
set to "NULL". Works for all data types supported by the ODBC class library.
\wxheading{Parameters}
-\docparam{colNo}{The column number of the bound column as defined by the
+\docparam{colNumber}{The column number of the bound column as defined by the
\helpref{wxDbTable::SetColDefs}{wxdbtablesetcoldefs}
calls which defined the columns accessible to this wxDbTable instance.}
\wxheading{Remarks}
-NULL column support is currently not fully implemented as of wxWindows 2.4.
+NULL column support is currently not fully implemented as of wxWidgets 2.4.
\membersection{wxDbTable::IsCursorClosedOnCommit}\label{wxdbtableiscursorclosedoncommit}
constructs the insert statement that is to be used for inserting data as a new
row in the datasource.
+NOTE: To retrieve data into an opened table, the of the table must be bound
+to the variables in the program via call(s) to
+\helpref{wxDbTable::SetColDefs}{wxdbtablesetcoldefs} before calling Open().
+
+See the \helpref{database classes overview}{odbcoverview} for
+an introduction to using the ODBC classes.
+
\wxheading{Parameters}
\docparam{checkPrivileges}{Indicates whether the Open() function should check
\helpref{wxDb::TableExists}{wxdbtableexists},
\helpref{wxDb::TablePrivileges}{wxdbtableprivileges}
+\helpref{wxDbTable::SetColDefs}{wxdbtablesetcoldefs}
\membersection{wxDbTable::OrderBy}\label{wxdbtableorderby}
Use \helpref{wxDbTable::SetOrderByClause}{wxdbtablesetorderbyclause} to
change the sequence in which records are returned in the result set from
the datasource (e.g. Ordered by LAST\_NAME). Use
-\helpref{wxDbTable::SetFromClause}{wxdbtablesetfromclause} to allow outer
+\helpref{wxDbTable::SetFromClause}{wxdbtablesetfromclause} to allow inner
joining of the base table (the one being associated with this instance of
wxDbTable) with other tables which share a related field.
the wxDbTable object. The SELECT statement must return exactly
that many columns.
\item The columns must be returned in the same sequence as specified
-when defining the bounds columns using wxDbTable::SetColDefs(),
+when defining the bounds columns \helpref{wxDbTable::SetColDefs}{wxdbtablesetcoldefs},
and the columns returned must be of the proper data type. For
example, if column 3 is defined in the wxDbTable bound column
definitions to be a float, the SELECT statement must return a
10%).
\item The ROWID can be included in your SELECT statement as the {\bf last}
column selected, if the datasource supports it. Use
-wxDbTable::CanUpdByROWID() to determine if the ROWID can be
+wxDbTable::CanUpdateByROWID() to determine if the ROWID can be
selected from the datasource. If it can, much better
performance can be achieved on updates and deletes by including
the ROWID in the SELECT statement.
----------------------
// Table Join returning 3 columns
- SELECT part_no, part_desc, sd_name
+ SELECT PART_NUM, part_desc, sd_name
from parts, storage_devices
where parts.storage_device_id =
storage_devices.storage_device_id
SELECT count(*) from PARTS where container = 99
// Order by clause; ROWID, scalar function
- SELECT part_no, substring(part_desc, 1, 10), qty_on_hand + 1, ROWID
+ SELECT PART_NUM, substring(part_desc, 1, 10), qty_on_hand + 1, ROWID
from parts
where warehouse = 10
- order by part_no desc // descending order
+ order by PART_NUM desc // descending order
// Subquery
SELECT * from parts
\membersection{wxDbTable::SetColDefs}\label{wxdbtablesetcoldefs}
-\func{void}{SetColDefs}{\param{UWORD }{index}, \param{const wxString \&}{fieldName},
+\func{bool}{SetColDefs}{\param{UWORD }{index}, \param{const wxString \&}{fieldName},
\param{int }{dataType}, \param{void *}{pData}, \param{SWORD }{cType},
-\param{int }{size}, \param{bool }{keyField = false}, \param{bool }{upd = true},
-\param{bool }{insAllow = true}, \param{bool }{derivedCol = false}}
+\param{int }{size}, \param{bool }{keyField = false}, \param{bool }{updateable = true},
+\param{bool }{insertAllowed = true}, \param{bool }{derivedColumn = false}}
\func{wxDbColDataPtr *}{SetColDefs}{\param{wxDbColInf *}{colInfs}, \param{UWORD }{numCols}}
DB_DATA_TYPE_INTEGER : non-floating point numbers
DB_DATA_TYPE_FLOAT : floating point numbers
DB_DATA_TYPE_DATE : dates
+ DB_DATA_TYPE_BLOB : binary large objects
+ DB_DATA_TYPE_MEMO : large strings
\end{verbatim}
\docparam{pData}{Pointer to the data object that will hold the column's
Other valid types are available also, but these are the most common ones:}
\begin{verbatim}
- SQL_C_CHAR // strings
+ SQL_C_CHAR // string - deprecated: use SQL_C_WXCHAR
+ SQL_C_WXCHAR // string - Used transparently in unicode or non-unicode builds
SQL_C_LONG
SQL_C_ULONG
SQL_C_SHORT
\docparam{size}{Maximum size in bytes of the {\it pData} object.}
\docparam{keyField}{{\it OPTIONAL}. Indicates if this column is part of the
primary index. Default is false.}
-\docparam{upd}{{\it OPTIONAL}. Are updates allowed on this column?
+\docparam{updateable}{{\it OPTIONAL}. Are updates allowed on this column?
Default is true.}
-\docparam{insAllow}{{\it OPTIONAL}. Inserts allowed on this column?
+\docparam{insertAllowed}{{\it OPTIONAL}. Inserts allowed on this column?
Default is true.}
-\docparam{derivedCol}{{\it OPTIONAL}. Is this a derived column (non-base
+\docparam{derivedColumn}{{\it OPTIONAL}. Is this a derived column (non-base
table column for query only)? Default is false.}
\docparam{colInfs}{Pointer to an array of wxDbColInf instances which contains
If {\it pData} is to hold a string of characters, be sure to include enough
space for the NULL terminator in pData and in the byte count of {\it size}.
+Using the first form of this function, if the column definition is not able
+to be created, a value of false is returned. If the specified index of the
+column exceeds the number of columns defined in the wxDbTable instance, an
+assert is thrown and logged (in debug builds) and a false is returned.
+
+A failure to create the column definition in the second form results in a
+value of NULL being returned.
+
Both forms of this function provide a shortcut for defining the columns in
your wxDbTable object. Use this function in any derived wxDbTable
constructor when describing the column/columns in the wxDbTable object.
\begin{verbatim}
// Long way not using this function
- wxStrcpy(colDefs[0].ColName, "PART_NO");
+ wxStrcpy(colDefs[0].ColName, "PART_NUM");
colDefs[0].DbDataType = DB_DATA_TYPE_VARCHAR;
colDefs[0].PtrDataObj = PartNumber;
- colDefs[0].SqlCtype = SQL_C_CHAR;
+ colDefs[0].SqlCtype = SQL_C_WXCHAR;
colDefs[0].SzDataObj = PART_NUMBER_LEN;
colDefs[0].KeyField = true;
colDefs[0].Updateable = false;
colDefs[0].DerivedCol = false;
// Shortcut using this function
- SetColDefs(0, "PART_NUMBER", DB_DATA_TYPE_VARCHAR, PartNumber,
- SQL_C_CHAR, PART_NUMBER_LEN, true, false,true,false);
+ SetColDefs(0, "PART_NUM", DB_DATA_TYPE_VARCHAR, PartNumber,
+ SQL_C_WXCHAR, PART_NUMBER_LEN, true, false, true, false);
\end{verbatim}
\membersection{wxDbTable::SetCursor}\label{wxdbtablesetcursor}
-\func{bool}{SetCursor}{\param{HSTMT *}{hstmtActivate = (void **) wxDB\_DEFAULT\_CURSOR}}
+\func{void}{SetCursor}{\param{HSTMT *}{hstmtActivate = (void **) wxDB\_DEFAULT\_CURSOR}}
\wxheading{Parameters}
\func{void}{SetFromClause}{\param{const wxString \&}{From}}
Accessor function for setting the private class member wxDbTable::from
-that indicates what other tables should be outer joined with the wxDbTable's
+that indicates what other tables should be inner joined with the wxDbTable's
base table for access to the columns in those other tables.
Synonym to this function is one form of \helpref{wxDbTable::From}{wxdbtablefrom}
\wxheading{Parameters}
-\docparam{From}{A comma separated list of table names that are to be outer
+\docparam{From}{A comma separated list of table names that are to be inner
joined with the base table's columns so that the joined table's columns
may be returned in the result set or used as a portion of a comparison with
the base table's columns. NOTE that the base tables name must NOT be included
\wxheading{Remarks}
Used by the \helpref{wxDbTable::Query}{wxdbtablequery} and
-\helpref{wxDbTable::Count}{wxdbtablecount} member functions to allow outer
+\helpref{wxDbTable::Count}{wxdbtablecount} member functions to allow inner
joining of records from multiple tables.
Do {\bf not} include the keyword "FROM" when setting the FROM clause.
\begin{verbatim}
...
// Base table is the "LOCATION" table, and it is being
- // outer joined to the "PART" table via the the field "PART_NUMBER"
+ // inner joined to the "PART" table via the field "PART_NUMBER"
// that can be related between the two tables.
location->SetWhereClause("LOCATION.PART_NUMBER = PART.PART_NUMBER")
location->SetFromClause("PART");
\membersection{wxDbTable::SetColNull}\label{wxdbtablesetcolnull}
-\func{bool}{SetColNull}{\param{UWORD }{colNo}, \param{bool }{set=true}}
+\func{bool}{SetColNull}{\param{UWORD }{colNumber}, \param{bool }{set=true}}
\func{bool}{SetColNull}{\param{const wxString \&}{colName},
\param{bool }{set=true}}
\wxheading{Parameters}
-\docparam{colNo}{Index into the column definitions used when first defining
+\docparam{colNumber}{Index into the column definitions used when first defining
this wxDbTable object.}
\docparam{colName}{Actual data table column name that is to be set to NULL.}
\docparam{set}{Whether the column is set to NULL or not. Passing true sets
// Using parameters and multiple logical combinations
parts->Where("((QTY > 10) OR (ON_ORDER > 0)) AND ON_HOLD = 0");
...
- // This query uses an outer join (requiring a FROM clause also)
+ // This query uses an inner join (requiring a FROM clause also)
// that joins the PART and LOCATION table on he common field
// PART_NUMBER.
parts->Where("PART.ON_HOLD = 0 AND \
See the \helpref{database classes overview}{odbcoverview} for
an introduction to using the ODBC classes.
+\wxheading{Include files}
+
+<wx/db.h>
+
+\wxheading{Library}
+
+\helpref{wxOdbc}{librarieslist}
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
\membersection{wxDbTableInf::Initialize}\label{wxdbtableinfinitialize}
Simply initializes all member variables to a cleared state. Called by
<wx/dbgrid.h>
+\wxheading{Library}
+
+\helpref{wxDbgrid}{librarieslist}
+
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxDbGridColInfo::wxDbGridColInfo}\label{wxdbgridcolinfo}
+\membersection{wxDbGridColInfo::wxDbGridColInfo}\label{wxdbgridcolinfoctor}
-\func{}{wxDbGridColInfo}{\param{int }{colNo}, \param{wxString }{type},
+\func{}{wxDbGridColInfo}{\param{int }{colNumber}, \param{wxString }{type},
\param{wxString }{title}, \param{wxDbGridColInfo *}{next}}
Default constructor. See the database grid example in \helpref{wxDbGridTableBase}{wxdbgridtablebase} to
\wxheading{Parameters}
-\docparam{colNo}{Column number in the \helpref{wxDbTable}{wxdbtable} instance to be used (first column is 0).}
+\docparam{colNumber}{Column number in the \helpref{wxDbTable}{wxdbtable} instance to be used (first column is 0).}
\docparam{type}{Column type ,wxString specifying the grid name for the datatype in this column, or
use wxGRID\_VALUE\_DBAUTO to determine the type automatically from the \helpref{wxDbColDef}{wxdbcoldef} definition}
\docparam{title}{The column label to be used in the grid display}
See the database grid example in \helpref{wxDbGridTableBase}{wxdbgridtablebase} to
see two different ways for adding columns.
-\membersection{wxDbGridColInfo::\destruct{wxDbGridColInfo}}
+\membersection{wxDbGridColInfo::\destruct{wxDbGridColInfo}}\label{wxdbgridcolinfodtor}
\func{}{\destruct{wxDbGridColInfo}}{}
\membersection{wxDbGridColInfo::AddColInfo}\label{wxdbgridcolinfoaddcolinfo}
-\func{void}{AddColInfo}{\param{int }{colNo},
+\func{void}{AddColInfo}{\param{int }{colNumber},
\param{wxString }{type}, \param{wxString }{title}}
Use this member function for adding columns. See the database
not have any effect.
\wxheading{Parameters}
-\docparam{colNo}{Column number in the \helpref{wxDbTable}{wxdbtable} instance to be used (first column is 0).}
+\docparam{colNumber}{Column number in the \helpref{wxDbTable}{wxdbtable} instance to be used (first column is 0).}
\docparam{type}{Column type ,wxString specifying the grid name for the datatype in this column, or
use wxGRID\_VALUE\_DBAUTO to determine the type automatically from the \helpref{wxDbColDef}{wxdbcoldef} definition}
\docparam{title}{The column label to be used in the grid display}
\helpref{wxDbTable}{wxdbtable}. If no datatype conversion or the referenced column number does not exist the
the behavior is undefined.
-See the example at \helpref{wxDbGridColInfo::wxDbGridColInfo}{wxdbgridcolinfo}.
+See the example at \helpref{wxDbGridColInfo::wxDbGridColInfo}{wxdbgridcolinfoctor}.
\section{\class{wxDbGridTableBase}}\label{wxdbgridtablebase}
<wx/dbgrid.h>
+\wxheading{Library}
+
+\helpref{wxDbgrid}{librarieslist}
+
\wxheading{Example}
projects / wxWidgets.git / blobdiff