Viewing file:  create_addfield.lib.php (11.6 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* set of functions for tbl_create.php and tbl_addfield.php
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* Transforms the radio button field_key into 4 arrays
*
* @return array An array of arrays which represents column keys for each index type
*/
function PMA_getIndexedColumns()
{
$field_cnt = count($_REQUEST['field_name']);
$field_primary = json_decode($_REQUEST['primary_indexes'], true);
$field_index = json_decode($_REQUEST['indexes'], true);
$field_unique = json_decode($_REQUEST['unique_indexes'], true);
$field_fulltext = json_decode($_REQUEST['fulltext_indexes'], true);
return array(
$field_cnt, $field_primary, $field_index, $field_unique,
$field_fulltext
);
}
/**
* Initiate the column creation statement according to the table creation or
* add columns to a existing table
*
* @param int $field_cnt number of columns
* @param boolean $is_create_tbl true if requirement is to get the statement
* for table creation
*
* @return array $definitions An array of initial sql statements
* according to the request
*/
function PMA_buildColumnCreationStatement(
$field_cnt, $is_create_tbl = true
) {
$definitions = array();
for ($i = 0; $i < $field_cnt; ++$i) {
// '0' is also empty for php :-(
if (empty($_REQUEST['field_name'][$i])
&& $_REQUEST['field_name'][$i] != '0'
) {
continue;
}
$definition = PMA_getStatementPrefix($is_create_tbl) .
PMA_Table::generateFieldSpec(
trim($_REQUEST['field_name'][$i]),
$_REQUEST['field_type'][$i],
$_REQUEST['field_length'][$i],
$_REQUEST['field_attribute'][$i],
isset($_REQUEST['field_collation'][$i])
? $_REQUEST['field_collation'][$i]
: '',
isset($_REQUEST['field_null'][$i])
? $_REQUEST['field_null'][$i]
: 'NOT NULL',
$_REQUEST['field_default_type'][$i],
$_REQUEST['field_default_value'][$i],
isset($_REQUEST['field_extra'][$i])
? $_REQUEST['field_extra'][$i]
: false,
isset($_REQUEST['field_comments'][$i])
? $_REQUEST['field_comments'][$i]
: ''
);
$definition .= PMA_setColumnCreationStatementSuffix($i, $is_create_tbl);
$definitions[] = $definition;
} // end for
return $definitions;
}
/**
* Set column creation suffix according to requested position of the new column
*
* @param int $current_field_num current column number
* @param boolean $is_create_tbl true if requirement is to get the statement
* for table creation
*
* @return string $sql_suffix suffix
*/
function PMA_setColumnCreationStatementSuffix($current_field_num,
$is_create_tbl = true
) {
// no suffix is needed if request is a table creation
$sql_suffix = " ";
if ($is_create_tbl) {
return $sql_suffix;
}
if ($_REQUEST['field_where'] == 'last') {
return $sql_suffix;
}
// Only the first field can be added somewhere other than at the end
if ($current_field_num == 0) {
if ($_REQUEST['field_where'] == 'first') {
$sql_suffix .= ' FIRST';
} else {
$sql_suffix .= ' AFTER '
. PMA_Util::backquote($_REQUEST['after_field']);
}
} else {
$sql_suffix .= ' AFTER '
. PMA_Util::backquote(
$_REQUEST['field_name'][$current_field_num - 1]
);
}
return $sql_suffix;
}
/**
* Create relevant index statements
*
* @param array $index an array of index columns
* @param string $index_choice index choice that which represents
* the index type of $indexed_fields
* @param boolean $is_create_tbl true if requirement is to get the statement
* for table creation
*
* @return array an array of sql statements for indexes
*/
function PMA_buildIndexStatements($index, $index_choice,
$is_create_tbl = true
) {
$statement = array();
if (!count($index)) {
return $statement;
}
$sql_query = PMA_getStatementPrefix($is_create_tbl)
. ' ' . $index_choice;
if (! empty($index['Key_name']) && $index['Key_name'] != 'PRIMARY') {
$sql_query .= ' ' . PMA_Util::backquote($index['Key_name']);
}
$index_fields = array();
foreach ($index['columns'] as $key => $column) {
$index_fields[$key] = PMA_Util::backquote(
$_REQUEST['field_name'][$column['col_index']]
);
if ($column['size']) {
$index_fields[$key] .= '(' . $column['size'] . ')';
}
} // end while
$sql_query .= ' (' . implode(', ', $index_fields) . ')';
$keyBlockSizes = $index['Key_block_size'];
if (! empty($keyBlockSizes)) {
$sql_query .= " KEY_BLOCK_SIZE = "
. PMA_Util::sqlAddSlashes($keyBlockSizes);
}
// specifying index type is allowed only for primary, unique and index only
$type = $index['Index_type'];
if ($index['Index_choice'] != 'SPATIAL'
&& $index['Index_choice'] != 'FULLTEXT'
&& in_array($type, PMA_Index::getIndexTypes())
) {
$sql_query .= ' USING ' . $type;
}
$parser = $index['Parser'];
if ($index['Index_choice'] == 'FULLTEXT' && ! empty($parser)) {
$sql_query .= " WITH PARSER " . PMA_Util::sqlAddSlashes($parser);
}
$comment = $index['Index_comment'];
if (! empty($comment)) {
$sql_query .= " COMMENT '" . PMA_Util::sqlAddSlashes($comment) . "'";
}
$statement[] = $sql_query;
return $statement;
}
/**
* Statement prefix for the PMA_buildColumnCreationStatement()
*
* @param boolean $is_create_tbl true if requirement is to get the statement
* for table creation
*
* @return string $sql_prefix prefix
*/
function PMA_getStatementPrefix($is_create_tbl = true)
{
$sql_prefix = " ";
if (! $is_create_tbl) {
$sql_prefix = ' ADD ';
}
return $sql_prefix;
}
/**
* Merge index definitions for one type of index
*
* @param array $definitions the index definitions to merge to
* @param boolean $is_create_tbl true if requirement is to get the statement
* for table creation
* @param array $indexed_columns the columns for one type of index
* @param string $index_keyword the index keyword to use in the definition
*
* @return array $index_definitions
*/
function PMA_mergeIndexStatements(
$definitions, $is_create_tbl, $indexed_columns, $index_keyword
) {
foreach ($indexed_columns as $index) {
$statements = PMA_buildIndexStatements(
$index, " " . $index_keyword . " ", $is_create_tbl
);
$definitions = array_merge($definitions, $statements);
}
return $definitions;
}
/**
* Returns sql statement according to the column and index specifications as
* requested
*
* @param boolean $is_create_tbl true if requirement is to get the statement
* for table creation
*
* @return string sql statement
*/
function PMA_getColumnCreationStatements($is_create_tbl = true)
{
$sql_statement = "";
list($field_cnt, $field_primary, $field_index,
$field_unique, $field_fulltext
) = PMA_getIndexedColumns();
$definitions = PMA_buildColumnCreationStatement(
$field_cnt, $is_create_tbl
);
// Builds the PRIMARY KEY statements
$primary_key_statements = PMA_buildIndexStatements(
isset($field_primary[0]) ? $field_primary[0] : array(),
" PRIMARY KEY ",
$is_create_tbl
);
$definitions = array_merge($definitions, $primary_key_statements);
// Builds the INDEX statements
$definitions = PMA_mergeIndexStatements(
$definitions, $is_create_tbl, $field_index, "INDEX"
);
// Builds the UNIQUE statements
$definitions = PMA_mergeIndexStatements(
$definitions, $is_create_tbl, $field_unique, "UNIQUE"
);
// Builds the FULLTEXT statements
$definitions = PMA_mergeIndexStatements(
$definitions, $is_create_tbl, $field_fulltext, "FULLTEXT"
);
if (count($definitions)) {
$sql_statement = implode(', ', $definitions);
}
$sql_statement = preg_replace('@, $@', '', $sql_statement);
return $sql_statement;
}
/**
* Function to get table creation sql query
*
* @param string $db database name
* @param string $table table name
*
* @return string
*/
function PMA_getTableCreationQuery($db, $table)
{
// get column addition statements
$sql_statement = PMA_getColumnCreationStatements(true);
// Builds the 'create table' statement
$sql_query = 'CREATE TABLE ' . PMA_Util::backquote($db) . '.'
. PMA_Util::backquote(trim($table)) . ' (' . $sql_statement . ')';
// Adds table type, character set, comments and partition definition
if (!empty($_REQUEST['tbl_storage_engine'])
&& ($_REQUEST['tbl_storage_engine'] != 'Default')
) {
$sql_query .= ' ENGINE = ' . $_REQUEST['tbl_storage_engine'];
}
if (!empty($_REQUEST['tbl_collation'])) {
$sql_query .= PMA_generateCharsetQueryPart($_REQUEST['tbl_collation']);
}
if (! empty($_REQUEST['connection'])
&& ! empty($_REQUEST['tbl_storage_engine'])
&& $_REQUEST['tbl_storage_engine'] == 'FEDERATED'
) {
$sql_query .= " CONNECTION = '"
. PMA_Util::sqlAddSlashes($_REQUEST['connection']) . "'";
}
if (!empty($_REQUEST['comment'])) {
$sql_query .= ' COMMENT = \''
. PMA_Util::sqlAddSlashes($_REQUEST['comment']) . '\'';
}
if (!empty($_REQUEST['partition_definition'])) {
$sql_query .= ' ' . PMA_Util::sqlAddSlashes(
$_REQUEST['partition_definition']
);
}
$sql_query .= ';';
return $sql_query;
}
/**
* Function to get the number of fields for the table creation form
*
* @return int
*/
function PMA_getNumberOfFieldsFromRequest()
{
if (isset($_REQUEST['submit_num_fields'])) {
$num_fields = min(
4096,
intval($_REQUEST['orig_num_fields']) + intval($_REQUEST['added_fields'])
);
} elseif (isset($_REQUEST['num_fields'])
&& intval($_REQUEST['num_fields']) > 0
) {
$num_fields = min(4096, intval($_REQUEST['num_fields']));
} else {
$num_fields = 4;
}
return $num_fields;
}
/**
* Function to execute the column creation statement
*
* @param string $db current database
* @param string $table current table
* @param string $err_url error page url
*
* @return array
*/
function PMA_tryColumnCreationQuery($db, $table, $err_url)
{
// get column addition statements
$sql_statement = PMA_getColumnCreationStatements(false);
// To allow replication, we first select the db to use and then run queries
// on this db.
$GLOBALS['dbi']->selectDb($db)
or PMA_Util::mysqlDie(
$GLOBALS['dbi']->getError(),
'USE ' . PMA_Util::backquote($db), false,
$err_url
);
$sql_query = 'ALTER TABLE ' .
PMA_Util::backquote($table) . ' ' . $sql_statement . ';';
// If there is a request for SQL previewing.
if (isset($_REQUEST['preview_sql'])) {
PMA_previewSQL($sql_query);
}
return array($GLOBALS['dbi']->tryQuery($sql_query) , $sql_query);
}
?>
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