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use already retrieved table info

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This commit is contained in:
Sebastian Mendel
2008-05-09 14:39:58 +00:00
parent df216c95ec
commit 3a228111ae
4 changed files with 92 additions and 86 deletions
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111
libraries/Table.class.php
View File

@@ -243,13 +243,32 @@ class PMA_Table
// from the result set are NULL except Name and Comment.
// MySQL from 5.0.0 to 5.0.12 returns 'view',
// from 5.0.13 returns 'VIEW'.
if (! isset(PMA_Table::$cache[$db][$table]['Comment'])) {
PMA_Table::$cache[$db][$table] = PMA_DBI_fetch_single_row('SHOW TABLE STATUS FROM ' . PMA_backquote($db) . ' LIKE \'' . $table . '\'');
}
$comment = strtoupper(PMA_Table::$cache[$db][$table]['Comment']);
// use substr() because the comment might contain something like:
// (VIEW 'BASE2.VTEST' REFERENCES INVALID TABLE(S) OR COLUMN(S) OR FUNCTION)
return (substr($comment, 0, 4) == 'VIEW');
$comment = strtoupper(PMA_Table::sGetStatusInfo($db, $table, 'Comment'));
return substr($comment, 0, 4) == 'VIEW';
}
static public function sGetToolTip($db, $table)
{
return PMA_Table::sGetStatusInfo($db, $table, 'Comment')
. ' (' . PMA_Table::countRecords($db, $table, true) . ')';
}
static public function sGetStatusInfo($db, $table, $info = null)
{
if (! isset(PMA_Table::$cache[$db][$table])) {
PMA_Table::$cache[$db][$table] = PMA_DBI_fetch_single_row('SHOW TABLE STATUS FROM ' . PMA_backquote($db) . ' LIKE \'' . $table . '\'');
}
if (null === $info) {
return PMA_Table::$cache[$db][$table];
}
if (! isset(PMA_Table::$cache[$db][$table][$info])) {
PMA_Table::$cache[$db][$table] = PMA_DBI_fetch_single_row('SHOW TABLE STATUS FROM ' . PMA_backquote($db) . ' LIKE \'' . $table . '\'');
}
return PMA_Table::$cache[$db][$table][$info];
}
/**
@@ -384,50 +403,54 @@ class PMA_Table
static public function countRecords($db, $table, $ret = false,
$force_exact = false, $is_view = null)
{
$row_count = false;
if (null === $is_view) {
$is_view = PMA_Table::isView($db, $table);
}
if (! $force_exact) {
if (! isset(PMA_Table::$cache[$db][$table]['Rows']) && ! $is_view) {
PMA_Table::$cache[$db][$table] = PMA_DBI_fetch_single_row('SHOW TABLE STATUS FROM ' . PMA_backquote($db) . ' LIKE \'' . PMA_sqlAddslashes($table, true) . '\'');
if (isset(PMA_Table::$cache[$db][$table]['ExactRows'])) {
$row_count = PMA_Table::$cache[$db][$table]['ExactRows'];
} else {
$row_count = false;
if (null === $is_view) {
$is_view = PMA_Table::isView($db, $table);
}
$row_count = PMA_Table::$cache[$db][$table]['Rows'];
}
// for a VIEW, $row_count is always false at this point
if (false === $row_count || $row_count < $GLOBALS['cfg']['MaxExactCount']) {
if (! $is_view) {
$row_count = PMA_DBI_fetch_value(
'SELECT COUNT(*) FROM ' . PMA_backquote($db) . '.'
. PMA_backquote($table));
} else {
// For complex views, even trying to get a partial record
// count could bring down a server, so we offer an
// alternative: setting MaxExactCountViews to 0 will bypass
// completely the record counting for views
if ($GLOBALS['cfg']['MaxExactCountViews'] == 0) {
$row_count = 0;
if (! $force_exact) {
if (! isset(PMA_Table::$cache[$db][$table]['Rows']) && ! $is_view) {
PMA_Table::$cache[$db][$table] = PMA_DBI_fetch_single_row('SHOW TABLE STATUS FROM ' . PMA_backquote($db) . ' LIKE \'' . PMA_sqlAddslashes($table, true) . '\'');
}
$row_count = PMA_Table::$cache[$db][$table]['Rows'];
}
// for a VIEW, $row_count is always false at this point
if (false === $row_count || $row_count < $GLOBALS['cfg']['MaxExactCount']) {
if (! $is_view) {
$row_count = PMA_DBI_fetch_value(
'SELECT COUNT(*) FROM ' . PMA_backquote($db) . '.'
. PMA_backquote($table));
} else {
// Counting all rows of a VIEW could be too long, so use
// a LIMIT clause.
// Use try_query because it can fail (a VIEW is based on
// a table that no longer exists)
$result = PMA_DBI_try_query(
'SELECT 1 FROM ' . PMA_backquote($db) . '.'
. PMA_backquote($table) . ' LIMIT '
. $GLOBALS['cfg']['MaxExactCountViews'],
null, PMA_DBI_QUERY_STORE);
if (!PMA_DBI_getError()) {
$row_count = PMA_DBI_num_rows($result);
PMA_DBI_free_result($result);
// For complex views, even trying to get a partial record
// count could bring down a server, so we offer an
// alternative: setting MaxExactCountViews to 0 will bypass
// completely the record counting for views
if ($GLOBALS['cfg']['MaxExactCountViews'] == 0) {
$row_count = 0;
} else {
// Counting all rows of a VIEW could be too long, so use
// a LIMIT clause.
// Use try_query because it can fail (a VIEW is based on
// a table that no longer exists)
$result = PMA_DBI_try_query(
'SELECT 1 FROM ' . PMA_backquote($db) . '.'
. PMA_backquote($table) . ' LIMIT '
. $GLOBALS['cfg']['MaxExactCountViews'],
null, PMA_DBI_QUERY_STORE);
if (!PMA_DBI_getError()) {
$row_count = PMA_DBI_num_rows($result);
PMA_DBI_free_result($result);
}
}
}
PMA_Table::$cache[$db][$table]['ExactRows'] = $row_count;
}
PMA_Table::$cache[$db][$table]['Rows'] = $row_count;
}
if ($ret) {