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>Înapoi</A
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ALIGN="center"
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><DIV
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><A
NAME="ref.dbplus"
></A
><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>XXI. DB++ Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN19089"
></A
><DIV
CLASS="warning"
><P
></P
><TABLE
CLASS="warning"
BORDER="1"
WIDTH="100%"
><TR
><TD
ALIGN="CENTER"
><B
>Avertisment</B
></TD
></TR
><TR
><TD
ALIGN="LEFT"
><P
>Aceastã extensie este
<SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>EXPERIMENTALÃ</I
></SPAN
>. Comportamentul acestei extensii,
incluzând numele funcþiilor ºi orice altceva documentat despre
aceastã extensie ar putea fi schimbate farã un anunþ prealabil,
intr-o viitoare versiune PHP. V-am avertizat, deci folosiþi aceastã
extensie pe riscul dv.</P
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dbplus.intro"
>Introducere</A
></H1
><P
> db++, made by the German company <A
HREF="http://www.concept-asa.de/index_gb.html"
TARGET="_top"
>Concept asa</A
>, is a relational
database system with high performance and low memory and disk
usage in mind. While providing SQL as an additional language
interface, it is not really a SQL database in the first place but
provides its own AQL query language which is much more influenced
by the relational algebra then SQL is.
</P
><P
> Concept asa always had an interest in supporting open source
languages, db++ has had Perl and Tcl call interfaces for years
now and uses Tcl as its internal stored procedure language.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dbplus.requirements"
>Necesitãþi</A
></H1
><P
> This extension relies on external client libraries so you have
to have a db++ client installed on the system you want to use
this extension on.
</P
><P
> <A
HREF="http://www.concept-asa.de/index_gb.html"
TARGET="_top"
>Concept asa</A
> provides
<A
HREF="http://www.concept-asa.de/down-eng.html"
TARGET="_top"
>db++ Demo versions</A
>
and <A
HREF="http://www.concept-asa.de/downloads/doc-eng.tar.gz"
TARGET="_top"
>documentation</A
>
for Linux, some other Unix versions. There is also a Windows
version of db++, but this extension doesn't support it (yet).
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dbplus.installation"
>Instalare</A
></H1
><P
> In order to build this extension yourself you need the db++ client libraries
and header files to be installed on your system (these are included in the
db++ installation archives by default). You have to run
<B
CLASS="command"
>configure</B
> with option <VAR
CLASS="option"
>--with-dbplus</VAR
> to
build this extension.
</P
><P
> <B
CLASS="command"
>configure</B
> looks for the client libraries and header files
under the default paths <TT
CLASS="filename"
>/usr/dbplus</TT
>,
<TT
CLASS="filename"
>/usr/local/dbplus</TT
> and <TT
CLASS="filename"
>/opt/dblus</TT
>.
If you have installed db++ in a different place you have add the installation
path to the <B
CLASS="command"
>configure</B
> option like this:
<VAR
CLASS="option"
>--with-dbplus=/your/installation/path</VAR
>.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dbplus.configuration"
>Configurare la rulare</A
></H1
><P
>Aceastã extensie nu defineºte directive
de configurare.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dbplus.resources"
>Tipuri de resurse</A
></H1
><DIV
CLASS="section"
><H2
CLASS="section"
><A
NAME="dbplus.resources.relation"
>dbplus_relation</A
></H2
><P
> Most db++ functions operate on or return
<VAR
CLASS="parameter"
>dbplus_relation</VAR
> resources. A
<VAR
CLASS="parameter"
>dbplus_relation</VAR
> is a handle to a stored
relation or a relation generated as the result of a query.
</P
></DIV
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="dbplus.constants"
>Constante predefinite</A
></H1
><P
> Aceste constante sunt definite de aceastã extensie ºi
vor fi disponibile doar cînd extensia a fost fie
compilatã odatã la instalarea PHP fie dacã extensia este încãrcatã
dinamic la rulare.</P
><DIV
CLASS="section"
><H2
CLASS="section"
><A
NAME="dbplus.errorcodes"
>db++ error codes</A
></H2
><P
> <DIV
CLASS="table"
><A
NAME="AEN19133"
></A
><P
><B
>Tabel 1. DB++ Error Codes</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>PHP Constant</TH
><TH
>db++ constant</TH
><TH
>meaning</TH
></TR
></THEAD
><TBODY
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_NOERR</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_NOERR</TD
><TD
>Null error condition</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_DUPLICATE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_DUPLICATE</TD
><TD
>Tried to insert a duplicate tuple</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_EOSCAN</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_EOSCAN</TD
><TD
>End of scan from rget()</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_EMPTY</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_EMPTY</TD
><TD
>Relation is empty (server)</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_CLOSE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_CLOSE</TD
><TD
>The server can't close</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_WLOCKED</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_WLOCKED</TD
><TD
>The record is write locked</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_LOCKED</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_LOCKED</TD
><TD
>Relation was already locked</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_NOLOCK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_NOLOCK</TD
><TD
>Relation cannot be locked</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_READ</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_READ</TD
><TD
>Read error on relation</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_WRITE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_WRITE</TD
><TD
>Write error on relation</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_CREATE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_CREATE</TD
><TD
>Create() system call failed</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_LSEEK</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_LSEEK</TD
><TD
>Lseek() system call failed</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_LENGTH</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_LENGTH</TD
><TD
>Tuple exceeds maximum length</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_OPEN</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_OPEN</TD
><TD
>Open() system call failed</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_WOPEN</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_WOPEN</TD
><TD
>Relation already opened for writing</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_MAGIC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_MAGIC</TD
><TD
>File is not a relation</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_VERSION</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_VERSION</TD
><TD
>File is a very old relation</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_PGSIZE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_PGSIZE</TD
><TD
>Relation uses a different page size</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_CRC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_CRC</TD
><TD
>Invalid crc in the superpage</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_PIPE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_PIPE</TD
><TD
>Piped relation requires lseek()</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_NIDX</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_NIDX</TD
><TD
>Too many secondary indices</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_MALLOC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_MALLOC</TD
><TD
>Malloc() call failed</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_NUSERS</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_NUSERS</TD
><TD
>Error use of max users</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_PREEXIT</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_PREEXIT</TD
><TD
>Caused by invalid usage</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_ONTRAP</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_ONTRAP</TD
><TD
>Caused by a signal</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_PREPROC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_PREPROC</TD
><TD
>Error in the preprocessor</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_DBPARSE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_DBPARSE</TD
><TD
>Error in the parser</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_DBRUNERR</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_DBRUNERR</TD
><TD
>Run error in db</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_DBPREEXIT</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_DBPREEXIT</TD
><TD
>Exit condition caused by prexit() * procedure</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_WAIT</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_WAIT</TD
><TD
>Wait a little (Simple only)</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_CORRUPT_TUPLE</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_CORRUPT_TUPLE</TD
><TD
>A client sent a corrupt tuple</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_WARNING0</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_WARNING0</TD
><TD
> The Simple routines encountered a non fatal error which was
corrected
</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_PANIC</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_PANIC</TD
><TD
> The server should not really die but after a disaster
send ERR_PANIC to all its clients
</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_FIFO</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_FIFO</TD
><TD
>Can't create a fifo</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_PERM</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_PERM</TD
><TD
>Permission denied</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_TCL</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_TCL</TD
><TD
>TCL_error</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_RESTRICTED</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_RESTRICTED</TD
><TD
>Only two users</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_USER</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_USER</TD
><TD
> An error in the use of the library by an application
programmer
</TD
></TR
><TR
><TD
> <TT
CLASS="constant"
><B
>DBPLUS_ERR_UNKNOWN</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)
</TD
><TD
>ERR_UNKNOWN</TD
><TD
> </TD
></TR
></TBODY
></TABLE
></DIV
>
</P
></DIV
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Cuprins</B
></DT
><DT
><A
HREF="function.dbplus-add.html"
>dbplus_add</A
> -- Add a tuple to a relation</DT
><DT
><A
HREF="function.dbplus-aql.html"
>dbplus_aql</A
> -- Perform AQL query</DT
><DT
><A
HREF="function.dbplus-chdir.html"
>dbplus_chdir</A
> -- Get/Set database virtual current directory</DT
><DT
><A
HREF="function.dbplus-close.html"
>dbplus_close</A
> -- Close a relation</DT
><DT
><A
HREF="function.dbplus-curr.html"
>dbplus_curr</A
> -- Get current tuple from relation</DT
><DT
><A
HREF="function.dbplus-errcode.html"
>dbplus_errcode</A
> --
Get error string for given errorcode or last error
</DT
><DT
><A
HREF="function.dbplus-errno.html"
>dbplus_errno</A
> -- Get error code for last operation</DT
><DT
><A
HREF="function.dbplus-find.html"
>dbplus_find</A
> -- Set a constraint on a relation</DT
><DT
><A
HREF="function.dbplus-first.html"
>dbplus_first</A
> -- Get first tuple from relation</DT
><DT
><A
HREF="function.dbplus-flush.html"
>dbplus_flush</A
> -- Flush all changes made on a relation</DT
><DT
><A
HREF="function.dbplus-freealllocks.html"
>dbplus_freealllocks</A
> -- Free all locks held by this client</DT
><DT
><A
HREF="function.dbplus-freelock.html"
>dbplus_freelock</A
> -- Release write lock on tuple</DT
><DT
><A
HREF="function.dbplus-freerlocks.html"
>dbplus_freerlocks</A
> -- Free all tuple locks on given relation</DT
><DT
><A
HREF="function.dbplus-getlock.html"
>dbplus_getlock</A
> -- Get a write lock on a tuple</DT
><DT
><A
HREF="function.dbplus-getunique.html"
>dbplus_getunique</A
> -- Get an id number unique to a relation</DT
><DT
><A
HREF="function.dbplus-info.html"
>dbplus_info</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-last.html"
>dbplus_last</A
> -- Get last tuple from relation</DT
><DT
><A
HREF="function.dbplus-lockrel.html"
>dbplus_lockrel</A
> -- Request write lock on relation</DT
><DT
><A
HREF="function.dbplus-next.html"
>dbplus_next</A
> -- Get next tuple from relation</DT
><DT
><A
HREF="function.dbplus-open.html"
>dbplus_open</A
> -- Open relation file</DT
><DT
><A
HREF="function.dbplus-prev.html"
>dbplus_prev</A
> -- Get previous tuple from relation</DT
><DT
><A
HREF="function.dbplus-rchperm.html"
>dbplus_rchperm</A
> -- Change relation permissions</DT
><DT
><A
HREF="function.dbplus-rcreate.html"
>dbplus_rcreate</A
> -- Creates a new DB++ relation</DT
><DT
><A
HREF="function.dbplus-rcrtexact.html"
>dbplus_rcrtexact</A
> -- Creates an exact but empty copy of a relation including indices</DT
><DT
><A
HREF="function.dbplus-rcrtlike.html"
>dbplus_rcrtlike</A
> -- Creates an empty copy of a relation with default indices</DT
><DT
><A
HREF="function.dbplus-resolve.html"
>dbplus_resolve</A
> -- Resolve host information for relation</DT
><DT
><A
HREF="function.dbplus-restorepos.html"
>dbplus_restorepos</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-rkeys.html"
>dbplus_rkeys</A
> -- Specify new primary key for a relation</DT
><DT
><A
HREF="function.dbplus-ropen.html"
>dbplus_ropen</A
> -- Open relation file local</DT
><DT
><A
HREF="function.dbplus-rquery.html"
>dbplus_rquery</A
> -- Perform local (raw) AQL query</DT
><DT
><A
HREF="function.dbplus-rrename.html"
>dbplus_rrename</A
> -- Rename a relation</DT
><DT
><A
HREF="function.dbplus-rsecindex.html"
>dbplus_rsecindex</A
> --
Create a new secondary index for a relation
</DT
><DT
><A
HREF="function.dbplus-runlink.html"
>dbplus_runlink</A
> -- Remove relation from filesystem</DT
><DT
><A
HREF="function.dbplus-rzap.html"
>dbplus_rzap</A
> -- Remove all tuples from relation</DT
><DT
><A
HREF="function.dbplus-savepos.html"
>dbplus_savepos</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-setindex.html"
>dbplus_setindex</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-setindexbynumber.html"
>dbplus_setindexbynumber</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-sql.html"
>dbplus_sql</A
> -- Perform SQL query</DT
><DT
><A
HREF="function.dbplus-tcl.html"
>dbplus_tcl</A
> -- Execute TCL code on server side</DT
><DT
><A
HREF="function.dbplus-tremove.html"
>dbplus_tremove</A
> -- Remove tuple and return new current tuple</DT
><DT
><A
HREF="function.dbplus-undo.html"
>dbplus_undo</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-undoprepare.html"
>dbplus_undoprepare</A
> -- ???</DT
><DT
><A
HREF="function.dbplus-unlockrel.html"
>dbplus_unlockrel</A
> -- Give up write lock on relation</DT
><DT
><A
HREF="function.dbplus-unselect.html"
>dbplus_unselect</A
> -- Remove a constraint from relation</DT
><DT
><A
HREF="function.dbplus-update.html"
>dbplus_update</A
> -- Update specified tuple in relation</DT
><DT
><A
HREF="function.dbplus-xlockrel.html"
>dbplus_xlockrel</A
> -- Request exclusive lock on relation</DT
><DT
><A
HREF="function.dbplus-xunlockrel.html"
>dbplus_xunlockrel</A
> -- Free exclusive lock on relation</DT
></DL
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