datadict-oci8.inc.php

Go to the documentation of this file.

<?php

// security - hide paths
if (!defined('ADODB_DIR')) die();

class ADODB2_oci8 extends ADODB_DataDict {

    var $databaseType = 'oci8';
    var $seqField = false;
    var $seqPrefix = 'SEQ_';
    var $dropTable = "DROP TABLE %s CASCADE CONSTRAINTS";
    var $trigPrefix = 'TRIG_';
    var $alterCol = ' MODIFY ';
    var $typeX = 'VARCHAR(4000)';
    var $typeXL = 'CLOB';

    function MetaType($t,$len=-1, $fieldobj=false)
    {
        if (is_object($t)) {
            $fieldobj = $t;
            $t = $fieldobj->type;
            $len = $fieldobj->max_length;
        }
        switch (strtoupper($t)) {
        case 'VARCHAR':
        case 'VARCHAR2':
        case 'CHAR':
        case 'VARBINARY':
        case 'BINARY':
            if (isset($this) && $len <= $this->blobSize) return 'C';
            return 'X';

        case 'NCHAR':
        case 'NVARCHAR2':
        case 'NVARCHAR':
            if (isset($this) && $len <= $this->blobSize) return 'C2';
            return 'X2';

        case 'NCLOB':
        case 'CLOB':
            return 'XL';

        case 'LONG RAW':
        case 'LONG VARBINARY':
        case 'BLOB':
            return 'B';

        case 'TIMESTAMP':
            return 'TS';

        case 'DATE':
            return 'T';

        case 'INT':
        case 'SMALLINT':
        case 'INTEGER':
            return 'I';

        default:
            return 'N';
        }
    }

    function ActualType($meta)
    {
        switch($meta) {
        case 'C': return 'VARCHAR';
        case 'X': return $this->typeX;
        case 'XL': return $this->typeXL;

        case 'C2': return 'NVARCHAR2';
        case 'X2': return 'NVARCHAR2(4000)';

        case 'B': return 'BLOB';

        case 'TS':
                return 'TIMESTAMP';

        case 'D':
        case 'T': return 'DATE';
        case 'L': return 'NUMBER(1)';
        case 'I1': return 'NUMBER(3)';
        case 'I2': return 'NUMBER(5)';
        case 'I':
        case 'I4': return 'NUMBER(10)';

        case 'I8': return 'NUMBER(20)';
        case 'F': return 'NUMBER';
        case 'N': return 'NUMBER';
        case 'R': return 'NUMBER(20)';
        default:
            return $meta;
        }
    }

    function CreateDatabase($dbname, $options=false)
    {
        $options = $this->_Options($options);
        $password = isset($options['PASSWORD']) ? $options['PASSWORD'] : 'tiger';
        $tablespace = isset($options["TABLESPACE"]) ? " DEFAULT TABLESPACE ".$options["TABLESPACE"] : '';
        $sql[] = "CREATE USER ".$dbname." IDENTIFIED BY ".$password.$tablespace;
        $sql[] = "GRANT CREATE SESSION, CREATE TABLE,UNLIMITED TABLESPACE,CREATE SEQUENCE TO $dbname";

        return $sql;
    }

    function AddColumnSQL($tabname, $flds)
    {
        $tabname = $this->TableName ($tabname);
        $f = array();
        list($lines,$pkey) = $this->_GenFields($flds);
        $s = "ALTER TABLE $tabname ADD (";
        foreach($lines as $v) {
            $f[] = "\n $v";
        }

        $s .= implode(', ',$f).')';
        $sql[] = $s;
        return $sql;
    }

    function AlterColumnSQL($tabname, $flds, $tableflds='', $tableoptions='')
    {
        $tabname = $this->TableName ($tabname);
        $f = array();
        list($lines,$pkey) = $this->_GenFields($flds);
        $s = "ALTER TABLE $tabname MODIFY(";
        foreach($lines as $v) {
            $f[] = "\n $v";
        }
        $s .= implode(', ',$f).')';
        $sql[] = $s;
        return $sql;
    }

    function DropColumnSQL($tabname, $flds, $tableflds='', $tableoptions='')
    {
        $tabname = $this->TableName ($tabname);
        if (!is_array($flds)) $flds = explode(',',$flds);
        foreach ($flds as $k => $v) $flds[$k] = $this->NameQuote($v);

        $sql = array();
        $s = "ALTER TABLE $tabname DROP(";
        $s .= implode(', ',$flds).') CASCADE CONSTRAINTS';
        $sql[] = $s;
        return $sql;
    }

    function _DropAutoIncrement($t)
    {
        if (strpos($t,'.') !== false) {
            $tarr = explode('.',$t);
            return "drop sequence ".$tarr[0].".seq_".$tarr[1];
        }
        return "drop sequence seq_".$t;
    }

    // return string must begin with space
    function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
    {
        $suffix = '';

        if ($fdefault == "''" && $fnotnull) {// this is null in oracle
            $fnotnull = false;
            if ($this->debug) ADOConnection::outp("NOT NULL and DEFAULT='' illegal in Oracle");
        }

        if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
        if ($fnotnull) $suffix .= ' NOT NULL';

        if ($fautoinc) $this->seqField = $fname;
        if ($fconstraint) $suffix .= ' '.$fconstraint;

        return $suffix;
    }

/*
CREATE or replace TRIGGER jaddress_insert
before insert on jaddress
for each row
begin
select seqaddress.nextval into :new.A_ID from dual;
end;
*/
    function _Triggers($tabname,$tableoptions)
    {
        if (!$this->seqField) return array();

        if ($this->schema) {
            $t = strpos($tabname,'.');
            if ($t !== false) $tab = substr($tabname,$t+1);
            else $tab = $tabname;
            $seqname = $this->schema.'.'.$this->seqPrefix.$tab;
            $trigname = $this->schema.'.'.$this->trigPrefix.$this->seqPrefix.$tab;
        } else {
            $seqname = $this->seqPrefix.$tabname;
            $trigname = $this->trigPrefix.$seqname;
        }

        if (strlen($seqname) > 30) {
            $seqname = $this->seqPrefix.uniqid('');
        } // end if
        if (strlen($trigname) > 30) {
            $trigname = $this->trigPrefix.uniqid('');
        } // end if

        if (isset($tableoptions['REPLACE'])) $sql[] = "DROP SEQUENCE $seqname";
        $seqCache = '';
        if (isset($tableoptions['SEQUENCE_CACHE'])){$seqCache = $tableoptions['SEQUENCE_CACHE'];}
        $seqIncr = '';
        if (isset($tableoptions['SEQUENCE_INCREMENT'])){$seqIncr = ' INCREMENT BY '.$tableoptions['SEQUENCE_INCREMENT'];}
        $seqStart = '';
        if (isset($tableoptions['SEQUENCE_START'])){$seqIncr = ' START WITH '.$tableoptions['SEQUENCE_START'];}
        $sql[] = "CREATE SEQUENCE $seqname $seqStart $seqIncr $seqCache";
        $sql[] = "CREATE OR REPLACE TRIGGER $trigname BEFORE insert ON $tabname FOR EACH ROW WHEN (NEW.$this->seqField IS NULL OR NEW.$this->seqField = 0) BEGIN select $seqname.nextval into :new.$this->seqField from dual; END;";

        $this->seqField = false;
        return $sql;
    }

    /*
    CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)]
        [table_options] [select_statement]
        create_definition:
        col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT]
        [PRIMARY KEY] [reference_definition]
        or PRIMARY KEY (index_col_name,...)
        or KEY [index_name] (index_col_name,...)
        or INDEX [index_name] (index_col_name,...)
        or UNIQUE [INDEX] [index_name] (index_col_name,...)
        or FULLTEXT [INDEX] [index_name] (index_col_name,...)
        or [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)
        [reference_definition]
        or CHECK (expr)
    */



    function _IndexSQL($idxname, $tabname, $flds,$idxoptions)
    {
        $sql = array();

        if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
            $sql[] = sprintf ($this->dropIndex, $idxname, $tabname);
            if ( isset($idxoptions['DROP']) )
                return $sql;
        }

        if ( empty ($flds) ) {
            return $sql;
        }

        if (isset($idxoptions['BITMAP'])) {
            $unique = ' BITMAP';
        } elseif (isset($idxoptions['UNIQUE'])) {
            $unique = ' UNIQUE';
        } else {
            $unique = '';
        }

        if ( is_array($flds) )
            $flds = implode(', ',$flds);
        $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' (' . $flds . ')';

        if ( isset($idxoptions[$this->upperName]) )
            $s .= $idxoptions[$this->upperName];

        if (isset($idxoptions['oci8']))
            $s .= $idxoptions['oci8'];


        $sql[] = $s;

        return $sql;
    }

    function GetCommentSQL($table,$col)
    {
        $table = $this->connection->qstr($table);
        $col = $this->connection->qstr($col);
        return "select comments from USER_COL_COMMENTS where TABLE_NAME=$table and COLUMN_NAME=$col";
    }

    function SetCommentSQL($table,$col,$cmt)
    {
        $cmt = $this->connection->qstr($cmt);
        return  "COMMENT ON COLUMN $table.$col IS $cmt";
    }
}