+++ /dev/null
-<?php
-
-namespace RedBeanPHP\QueryWriter;
-
-use RedBeanPHP\Adapter\DBAdapter as DBAdapter;
-use RedBeanPHP\RedException as RedException;
-use RedBeanPHP\QueryWriter as QueryWriter;
-use RedBeanPHP\OODBBean as OODBBean;
-use RedBeanPHP\RedException\SQL as SQLException;
-
-/**
- * RedBeanPHP Abstract Query Writer.
- * Represents an abstract Database to RedBean
- * To write a driver for a different database for RedBean
- * Contains a number of functions all implementors can
- * inherit or override.
- *
- * @file RedBeanPHP/QueryWriter/AQueryWriter.php
- * @author Gabor de Mooij and the RedBeanPHP Community
- * @license BSD/GPLv2
- *
- * @copyright
- * (c) copyright G.J.G.T. (Gabor) de Mooij and the RedBeanPHP Community.
- * This source file is subject to the BSD/GPLv2 License that is bundled
- * with this source code in the file license.txt.
- */
-abstract class AQueryWriter
-{
- /**
- * @var array
- */
- private static $sqlFilters = array();
-
- /**
- * @var boolean
- */
- private static $flagSQLFilterSafeMode = false;
-
- /**
- * @var boolean
- */
- private static $flagNarrowFieldMode = true;
-
- /**
- * @var array
- */
- public static $renames = array();
-
- /**
- * @var DBAdapter
- */
- protected $adapter;
-
- /**
- * @var string
- */
- protected $defaultValue = 'NULL';
-
- /**
- * @var string
- */
- protected $quoteCharacter = '';
-
- /**
- * @var boolean
- */
- protected $flagUseCache = TRUE;
-
- /**
- * @var array
- */
- protected $cache = array();
-
- /**
- * @var integer
- */
- protected $maxCacheSizePerType = 20;
-
- /**
- * @var array
- */
- public $typeno_sqltype = array();
-
- /**
- * Checks whether a number can be treated like an int.
- *
- * @param string $value string representation of a certain value
- *
- * @return boolean
- */
- public static function canBeTreatedAsInt( $value )
- {
- return (bool) ( strval( $value ) === strval( intval( $value ) ) );
- }
-
- /**
- * @see QueryWriter::getAssocTableFormat
- */
- public static function getAssocTableFormat( $types )
- {
- sort( $types );
-
- $assoc = implode( '_', $types );
-
- return ( isset( self::$renames[$assoc] ) ) ? self::$renames[$assoc] : $assoc;
- }
-
- /**
- * @see QueryWriter::renameAssociation
- */
- public static function renameAssociation( $from, $to = NULL )
- {
- if ( is_array( $from ) ) {
- foreach ( $from as $key => $value ) self::$renames[$key] = $value;
-
- return;
- }
-
- self::$renames[$from] = $to;
- }
-
- /**
- * Globally available service method for RedBeanPHP.
- * Converts a camel cased string to a snake cased string.
- *
- * @param string $camel camelCased string to converty to snake case
- *
- * @return string
- */
- public static function camelsSnake( $camel )
- {
- return strtolower( preg_replace( '/(?<=[a-z])([A-Z])|([A-Z])(?=[a-z])/', '_$1$2', $camel ) );
- }
-
- /**
- * Clears renames.
- *
- * @return void
- */
- public static function clearRenames()
- {
- self::$renames = array();
- }
-
- /**
- * Toggles 'Narrow Field Mode'.
- * In Narrow Field mode the queryRecord method will
- * narrow its selection field to
- *
- * SELECT {table}.*
- *
- * instead of
- *
- * SELECT *
- *
- * This is a better way of querying because it allows
- * more flexibility (for instance joins). However if you need
- * the wide selector for backward compatibility; use this method
- * to turn OFF Narrow Field Mode by passing FALSE.
- *
- * @param boolean $narrowField TRUE = Narrow Field FALSE = Wide Field
- *
- * @return void
- */
- public static function setNarrowFieldMode( $narrowField )
- {
- self::$flagNarrowFieldMode = (boolean) $narrowField;
- }
-
- /**
- * Sets SQL filters.
- * This is a lowlevel method to set the SQL filter array.
- * The format of this array is:
- *
- * <code>
- * array(
- * '<MODE, i.e. 'r' for read, 'w' for write>' => array(
- * '<TABLE NAME>' => array(
- * '<COLUMN NAME>' => '<SQL>'
- * )
- * )
- * )
- * </code>
- *
- * Example:
- *
- * <code>
- * array(
- * QueryWriter::C_SQLFILTER_READ => array(
- * 'book' => array(
- * 'title' => ' LOWER(book.title) '
- * )
- * )
- * </code>
- *
- * Note that you can use constants instead of magical chars
- * as keys for the uppermost array.
- * This is a lowlevel method. For a more friendly method
- * please take a look at the facade: R::bindFunc().
- *
- * @param array list of filters to set
- *
- * @return void
- */
- public static function setSQLFilters( $sqlFilters, $safeMode = false )
- {
- self::$flagSQLFilterSafeMode = (boolean) $safeMode;
- self::$sqlFilters = $sqlFilters;
- }
-
- /**
- * Returns current SQL Filters.
- * This method returns the raw SQL filter array.
- * This is a lowlevel method. For a more friendly method
- * please take a look at the facade: R::bindFunc().
- *
- * @return array
- */
- public static function getSQLFilters()
- {
- return self::$sqlFilters;
- }
-
- /**
- * Returns a cache key for the cache values passed.
- * This method returns a fingerprint string to be used as a key to store
- * data in the writer cache.
- *
- * @param array $keyValues key-value to generate key for
- *
- * @return string
- */
- private function getCacheKey( $keyValues )
- {
- return json_encode( $keyValues );
- }
-
- /**
- * Returns the values associated with the provided cache tag and key.
- *
- * @param string $cacheTag cache tag to use for lookup
- * @param string $key key to use for lookup
- *
- * @return mixed
- */
- private function getCached( $cacheTag, $key )
- {
- $sql = $this->adapter->getSQL();
-
- if ($this->updateCache()) {
- if ( isset( $this->cache[$cacheTag][$key] ) ) {
- return $this->cache[$cacheTag][$key];
- }
- }
-
- return NULL;
- }
-
- /**
- * Checks if the previous query had a keep-cache tag.
- * If so, the cache will persist, otherwise the cache will be flushed.
- *
- * Returns TRUE if the cache will remain and FALSE if a flush has
- * been performed.
- *
- * @return boolean
- */
- private function updateCache()
- {
- $sql = $this->adapter->getSQL();
- if ( strpos( $sql, '-- keep-cache' ) !== strlen( $sql ) - 13 ) {
- // If SQL has been taken place outside of this method then something else then
- // a select query might have happened! (or instruct to keep cache)
- $this->cache = array();
- return FALSE;
- }
- return TRUE;
- }
-
- /**
- * Stores data from the writer in the cache under a specific key and cache tag.
- * A cache tag is used to make sure the cache remains consistent. In most cases the cache tag
- * will be the bean type, this makes sure queries associated with a certain reference type will
- * never contain conflicting data.
- * Why not use the cache tag as a key? Well
- * we need to make sure the cache contents fits the key (and key is based on the cache values).
- * Otherwise it would be possible to store two different result sets under the same key (the cache tag).
- *
- * In previous versions you could only store one key-entry, I have changed this to
- * improve caching efficiency (issue #400).
- *
- * @param string $cacheTag cache tag (secondary key)
- * @param string $key key to store values under
- * @param array $values content to be stored
- *
- * @return void
- */
- private function putResultInCache( $cacheTag, $key, $values )
- {
- if ( isset( $this->cache[$cacheTag] ) ) {
- if ( count( $this->cache[$cacheTag] ) > $this->maxCacheSizePerType ) array_shift( $this->cache[$cacheTag] );
- } else {
- $this->cache[$cacheTag] = array();
- }
-
- $this->cache[$cacheTag][$key] = $values;
- }
-
- /**
- * Creates an SQL snippet from a list of conditions of format:
- *
- * <code>
- * array(
- * key => array(
- * value1, value2, value3 ....
- * )
- * )
- * </code>
- *
- * @param array $conditions list of conditions
- * @param array $bindings parameter bindings for SQL snippet
- * @param string $addSql additional SQL snippet to append to result
- *
- * @return string
- */
- private function makeSQLFromConditions( $conditions, &$bindings, $addSql = '' )
- {
- reset( $bindings );
- $firstKey = key( $bindings );
- $paramTypeIsNum = ( is_numeric( $firstKey ) );
- $counter = 0;
-
- $sqlConditions = array();
- foreach ( $conditions as $column => $values ) {
- if ( !count( $values ) ) continue;
-
- $sql = $this->esc( $column );
- $sql .= ' IN ( ';
-
- if ( !is_array( $values ) ) $values = array( $values );
-
- if ( $paramTypeIsNum ) {
- $sql .= implode( ',', array_fill( 0, count( $values ), '?' ) ) . ' ) ';
-
- array_unshift($sqlConditions, $sql);
-
- foreach ( $values as $k => $v ) {
- $values[$k] = strval( $v );
-
- array_unshift( $bindings, $v );
- }
- } else {
-
- $slots = array();
-
- foreach( $values as $k => $v ) {
- $slot = ':slot'.$counter++;
- $slots[] = $slot;
- $bindings[$slot] = strval( $v );
- }
-
- $sql .= implode( ',', $slots ).' ) ';
- $sqlConditions[] = $sql;
- }
- }
-
- $sql = '';
- if ( is_array( $sqlConditions ) && count( $sqlConditions ) > 0 ) {
- $sql = implode( ' AND ', $sqlConditions );
- $sql = " WHERE ( $sql ) ";
-
- if ( $addSql ) $sql .= $addSql;
- } elseif ( $addSql ) {
- $sql = $addSql;
- }
-
- return $sql;
- }
-
- /**
- * Returns the table names and column names for a relational query.
- *
- * @param string $sourceType type of the source bean
- * @param string $destType type of the bean you want to obtain using the relation
- * @param boolean $noQuote TRUE if you want to omit quotes
- *
- * @return array
- */
- private function getRelationalTablesAndColumns( $sourceType, $destType, $noQuote = FALSE )
- {
- $linkTable = $this->esc( $this->getAssocTable( array( $sourceType, $destType ) ), $noQuote );
- $sourceCol = $this->esc( $sourceType . '_id', $noQuote );
-
- if ( $sourceType === $destType ) {
- $destCol = $this->esc( $destType . '2_id', $noQuote );
- } else {
- $destCol = $this->esc( $destType . '_id', $noQuote );
- }
-
- $sourceTable = $this->esc( $sourceType, $noQuote );
- $destTable = $this->esc( $destType, $noQuote );
-
- return array( $sourceTable, $destTable, $linkTable, $sourceCol, $destCol );
- }
-
- /**
- * Given a type and a property name this method
- * returns the foreign key map section associated with this pair.
- *
- * @param string $type name of the type
- * @param string $property name of the property
- *
- * @return array|NULL
- */
- protected function getForeignKeyForTypeProperty( $type, $property )
- {
- $property = $this->esc( $property, TRUE );
-
- try {
- $map = $this->getKeyMapForType( $type );
- } catch ( SQLException $e ) {
- return NULL;
- }
-
- foreach( $map as $key ) {
- if ( $key['from'] === $property ) return $key;
- }
- return NULL;
- }
-
- /**
- * Returns the foreign key map (FKM) for a type.
- * A foreign key map describes the foreign keys in a table.
- * A FKM always has the same structure:
- *
- * <code>
- * array(
- * 'name' => <name of the foreign key>
- * 'from' => <name of the column on the source table>
- * 'table' => <name of the target table>
- * 'to' => <name of the target column> (most of the time 'id')
- * 'on_update' => <update rule: 'SET NULL','CASCADE' or 'RESTRICT'>
- * 'on_delete' => <delete rule: 'SET NULL','CASCADE' or 'RESTRICT'>
- * )
- * </code>
- *
- * @note the keys in the result array are FKDLs, i.e. descriptive unique
- * keys per source table. Also see: AQueryWriter::makeFKLabel for details.
- *
- * @param string $type the bean type you wish to obtain a key map of
- *
- * @return array
- */
- protected function getKeyMapForType( $type )
- {
- return array();
- }
-
- /**
- * This method makes a key for a foreign key description array.
- * This key is a readable string unique for every source table.
- * This uniform key is called the FKDL Foreign Key Description Label.
- * Note that the source table is not part of the FKDL because
- * this key is supposed to be 'per source table'. If you wish to
- * include a source table, prefix the key with 'on_table_<SOURCE>_'.
- *
- * @param string $from the column of the key in the source table
- * @param string $type the type (table) where the key points to
- * @param string $to the target column of the foreign key (mostly just 'id')
- *
- * @return string
- */
- protected function makeFKLabel($from, $type, $to)
- {
- return "from_{$from}_to_table_{$type}_col_{$to}";
- }
-
- /**
- * Returns an SQL Filter snippet for reading.
- *
- * @param string $type type of bean
- *
- * @return string
- */
- protected function getSQLFilterSnippet( $type )
- {
- $existingCols = array();
- if (self::$flagSQLFilterSafeMode) {
- $existingCols = $this->getColumns( $type );
- }
-
- $sqlFilters = array();
- if ( isset( self::$sqlFilters[QueryWriter::C_SQLFILTER_READ][$type] ) ) {
- foreach( self::$sqlFilters[QueryWriter::C_SQLFILTER_READ][$type] as $property => $sqlFilter ) {
- if ( !self::$flagSQLFilterSafeMode || isset( $existingCols[$property] ) ) {
- $sqlFilters[] = $sqlFilter.' AS '.$property.' ';
- }
- }
- }
- $sqlFilterStr = ( count($sqlFilters) ) ? ( ','.implode( ',', $sqlFilters ) ) : '';
- return $sqlFilterStr;
- }
-
- /**
- * Generates a list of parameters (slots) for an SQL snippet.
- * This method calculates the correct number of slots to insert in the
- * SQL snippet and determines the correct type of slot. If the bindings
- * array contains named parameters this method will return named ones and
- * update the keys in the value list accordingly (that's why we use the &).
- *
- * If you pass an offset the bindings will be re-added to the value list.
- * Some databases cant handle duplicate parameter names in queries.
- *
- * @param array &$valueList list of values to generate slots for (gets modified if needed)
- * @param array $otherBindings list of additional bindings
- * @param integer $offset start counter at...
- *
- * @return string
- */
- protected function getParametersForInClause( &$valueList, $otherBindings, $offset = 0 )
- {
- if ( is_array( $otherBindings ) && count( $otherBindings ) > 0 ) {
- reset( $otherBindings );
-
- $key = key( $otherBindings );
-
- if ( !is_numeric($key) ) {
- $filler = array();
- $newList = (!$offset) ? array() : $valueList;
- $counter = $offset;
-
- foreach( $valueList as $value ) {
- $slot = ':slot' . ( $counter++ );
- $filler[] = $slot;
- $newList[$slot] = $value;
- }
-
- // Change the keys!
- $valueList = $newList;
-
- return implode( ',', $filler );
- }
- }
-
- return implode( ',', array_fill( 0, count( $valueList ), '?' ) );
- }
-
- /**
- * Adds a data type to the list of data types.
- * Use this method to add a new column type definition to the writer.
- * Used for UUID support.
- *
- * @param integer $dataTypeID magic number constant assigned to this data type
- * @param string $SQLDefinition SQL column definition (i.e. INT(11))
- *
- * @return self
- */
- protected function addDataType( $dataTypeID, $SQLDefinition )
- {
- $this->typeno_sqltype[ $dataTypeID ] = $SQLDefinition;
- $this->sqltype_typeno[ $SQLDefinition ] = $dataTypeID;
- return $this;
- }
-
- /**
- * Returns the sql that should follow an insert statement.
- *
- * @param string $table name
- *
- * @return string
- */
- protected function getInsertSuffix( $table )
- {
- return '';
- }
-
- /**
- * Checks whether a value starts with zeros. In this case
- * the value should probably be stored using a text datatype instead of a
- * numerical type in order to preserve the zeros.
- *
- * @param string $value value to be checked.
- *
- * @return boolean
- */
- protected function startsWithZeros( $value )
- {
- $value = strval( $value );
-
- if ( strlen( $value ) > 1 && strpos( $value, '0' ) === 0 && strpos( $value, '0.' ) !== 0 ) {
- return TRUE;
- } else {
- return FALSE;
- }
- }
-
- /**
- * Inserts a record into the database using a series of insert columns
- * and corresponding insertvalues. Returns the insert id.
- *
- * @param string $table table to perform query on
- * @param array $insertcolumns columns to be inserted
- * @param array $insertvalues values to be inserted
- *
- * @return integer
- */
- protected function insertRecord( $type, $insertcolumns, $insertvalues )
- {
- $default = $this->defaultValue;
- $suffix = $this->getInsertSuffix( $type );
- $table = $this->esc( $type );
-
- if ( count( $insertvalues ) > 0 && is_array( $insertvalues[0] ) && count( $insertvalues[0] ) > 0 ) {
-
- $insertSlots = array();
- foreach ( $insertcolumns as $k => $v ) {
- $insertcolumns[$k] = $this->esc( $v );
-
- if (isset(self::$sqlFilters['w'][$type][$v])) {
- $insertSlots[] = self::$sqlFilters['w'][$type][$v];
- } else {
- $insertSlots[] = '?';
- }
- }
-
- $insertSQL = "INSERT INTO $table ( id, " . implode( ',', $insertcolumns ) . " ) VALUES
- ( $default, " . implode( ',', $insertSlots ) . " ) $suffix";
-
- $ids = array();
- foreach ( $insertvalues as $i => $insertvalue ) {
- $ids[] = $this->adapter->getCell( $insertSQL, $insertvalue, $i );
- }
-
- $result = count( $ids ) === 1 ? array_pop( $ids ) : $ids;
- } else {
- $result = $this->adapter->getCell( "INSERT INTO $table (id) VALUES($default) $suffix" );
- }
-
- if ( $suffix ) return $result;
-
- $last_id = $this->adapter->getInsertID();
-
- return $last_id;
- }
-
- /**
- * Checks table name or column name.
- *
- * @param string $table table string
- *
- * @return string
- */
- protected function check( $struct )
- {
- if ( !is_string( $struct ) || !preg_match( '/^[a-zA-Z0-9_]+$/', $struct ) ) {
- throw new RedException( 'Identifier does not conform to RedBeanPHP security policies.' );
- }
-
- return $struct;
- }
-
- /**
- * Checks whether the specified type (i.e. table) already exists in the database.
- * Not part of the Object Database interface!
- *
- * @param string $table table name
- *
- * @return boolean
- */
- public function tableExists( $table )
- {
- $tables = $this->getTables();
-
- return in_array( $table, $tables );
- }
-
- /**
- * @see QueryWriter::glueSQLCondition
- */
- public function glueSQLCondition( $sql, $glue = NULL )
- {
- static $snippetCache = array();
-
- if ( trim( $sql ) === '' ) {
- return $sql;
- }
-
- $key = $glue . '|' . $sql;
-
- if ( isset( $snippetCache[$key] ) ) {
- return $snippetCache[$key];
- }
-
- $lsql = ltrim( $sql );
-
- if ( preg_match( '/^(INNER|LEFT|RIGHT|JOIN|AND|OR|WHERE|ORDER|GROUP|HAVING|LIMIT|OFFSET)\s+/i', $lsql ) ) {
- if ( $glue === QueryWriter::C_GLUE_WHERE && stripos( $lsql, 'AND' ) === 0 ) {
- $snippetCache[$key] = ' WHERE ' . substr( $lsql, 3 );
- } else {
- $snippetCache[$key] = $sql;
- }
- } else {
- $snippetCache[$key] = ( ( $glue === QueryWriter::C_GLUE_AND ) ? ' AND ' : ' WHERE ') . $sql;
- }
-
- return $snippetCache[$key];
- }
-
- /**
- * @see QueryWriter::glueLimitOne
- */
- public function glueLimitOne( $sql = '')
- {
- return ( strpos( strtoupper( $sql ), 'LIMIT' ) === FALSE ) ? ( $sql . ' LIMIT 1 ' ) : $sql;
- }
-
- /**
- * @see QueryWriter::esc
- */
- public function esc( $dbStructure, $dontQuote = FALSE )
- {
- $this->check( $dbStructure );
-
- return ( $dontQuote ) ? $dbStructure : $this->quoteCharacter . $dbStructure . $this->quoteCharacter;
- }
-
- /**
- * @see QueryWriter::addColumn
- */
- public function addColumn( $type, $column, $field )
- {
- $table = $type;
- $type = $field;
- $table = $this->esc( $table );
- $column = $this->esc( $column );
-
- $type = ( isset( $this->typeno_sqltype[$type] ) ) ? $this->typeno_sqltype[$type] : '';
-
- $this->adapter->exec( "ALTER TABLE $table ADD $column $type " );
- }
-
- /**
- * @see QueryWriter::updateRecord
- */
- public function updateRecord( $type, $updatevalues, $id = NULL )
- {
- $table = $type;
-
- if ( !$id ) {
- $insertcolumns = $insertvalues = array();
-
- foreach ( $updatevalues as $pair ) {
- $insertcolumns[] = $pair['property'];
- $insertvalues[] = $pair['value'];
- }
-
- //Otherwise psql returns string while MySQL/SQLite return numeric causing problems with additions (array_diff)
- return (string) $this->insertRecord( $table, $insertcolumns, array( $insertvalues ) );
- }
-
- if ( $id && !count( $updatevalues ) ) {
- return $id;
- }
-
- $table = $this->esc( $table );
- $sql = "UPDATE $table SET ";
-
- $p = $v = array();
-
- foreach ( $updatevalues as $uv ) {
-
- if ( isset( self::$sqlFilters['w'][$type][$uv['property']] ) ) {
- $p[] = " {$this->esc( $uv["property"] )} = ". self::$sqlFilters['w'][$type][$uv['property']];
- } else {
- $p[] = " {$this->esc( $uv["property"] )} = ? ";
- }
-
- $v[] = $uv['value'];
- }
-
- $sql .= implode( ',', $p ) . ' WHERE id = ? ';
-
- $v[] = $id;
-
- $this->adapter->exec( $sql, $v );
-
- return $id;
- }
-
- /**
- * @see QueryWriter::writeJoin
- */
- public function writeJoin( $type, $targetType, $leftRight = 'LEFT' )
- {
- if ( $leftRight !== 'LEFT' && $leftRight !== 'RIGHT' && $leftRight !== 'INNER' )
- throw new RedException( 'Invalid JOIN.' );
-
- $table = $this->esc( $type );
- $targetTable = $this->esc( $targetType );
- $field = $this->esc( $targetType, TRUE );
- return " {$leftRight} JOIN {$targetTable} ON {$targetTable}.id = {$table}.{$field}_id ";
- }
-
- /**
- * @see QueryWriter::queryRecord
- */
- public function queryRecord( $type, $conditions = array(), $addSql = NULL, $bindings = array() )
- {
- $addSql = $this->glueSQLCondition( $addSql, ( count($conditions) > 0) ? QueryWriter::C_GLUE_AND : NULL );
-
- $key = NULL;
- if ( $this->flagUseCache ) {
- $key = $this->getCacheKey( array( $conditions, $addSql, $bindings, 'select' ) );
-
- if ( $cached = $this->getCached( $type, $key ) ) {
- return $cached;
- }
- }
-
- $table = $this->esc( $type );
-
- $sqlFilterStr = '';
- if ( count( self::$sqlFilters ) ) {
- $sqlFilterStr = $this->getSQLFilterSnippet( $type );
- }
-
- $sql = $this->makeSQLFromConditions( $conditions, $bindings, $addSql );
-
- $fieldSelection = ( self::$flagNarrowFieldMode ) ? "{$table}.*" : '*';
- $sql = "SELECT {$fieldSelection} {$sqlFilterStr} FROM {$table} {$sql} -- keep-cache";
-
- $rows = $this->adapter->get( $sql, $bindings );
-
- if ( $this->flagUseCache && $key ) {
- $this->putResultInCache( $type, $key, $rows );
- }
-
- return $rows;
- }
-
- /**
- * @see QueryWriter::queryRecordWithCursor
- */
- public function queryRecordWithCursor( $type, $addSql = NULL, $bindings = array() )
- {
- $sql = $this->glueSQLCondition( $addSql, NULL );
- $table = $this->esc( $type );
- $sql = "SELECT {$table}.* FROM {$table} {$sql}";
- return $this->adapter->getCursor( $sql, $bindings );
- }
-
- /**
- * @see QueryWriter::queryRecordRelated
- */
- public function queryRecordRelated( $sourceType, $destType, $linkIDs, $addSql = '', $bindings = array() )
- {
- $addSql = $this->glueSQLCondition( $addSql, QueryWriter::C_GLUE_WHERE );
-
- list( $sourceTable, $destTable, $linkTable, $sourceCol, $destCol ) = $this->getRelationalTablesAndColumns( $sourceType, $destType );
-
- $key = $this->getCacheKey( array( $sourceType, $destType, implode( ',', $linkIDs ), $addSql, $bindings ) );
-
- if ( $this->flagUseCache && $cached = $this->getCached( $destType, $key ) ) {
- return $cached;
- }
-
- $inClause = $this->getParametersForInClause( $linkIDs, $bindings );
-
- $sqlFilterStr = '';
- if ( count( self::$sqlFilters ) ) {
- $sqlFilterStr = $this->getSQLFilterSnippet( $destType );
- }
-
- if ( $sourceType === $destType ) {
- $inClause2 = $this->getParametersForInClause( $linkIDs, $bindings, count( $bindings ) ); //for some databases
- $sql = "
- SELECT
- {$destTable}.* {$sqlFilterStr} ,
- COALESCE(
- NULLIF({$linkTable}.{$sourceCol}, {$destTable}.id),
- NULLIF({$linkTable}.{$destCol}, {$destTable}.id)) AS linked_by
- FROM {$linkTable}
- INNER JOIN {$destTable} ON
- ( {$destTable}.id = {$linkTable}.{$destCol} AND {$linkTable}.{$sourceCol} IN ($inClause) ) OR
- ( {$destTable}.id = {$linkTable}.{$sourceCol} AND {$linkTable}.{$destCol} IN ($inClause2) )
- {$addSql}
- -- keep-cache";
-
- $linkIDs = array_merge( $linkIDs, $linkIDs );
- } else {
- $sql = "
- SELECT
- {$destTable}.* {$sqlFilterStr},
- {$linkTable}.{$sourceCol} AS linked_by
- FROM {$linkTable}
- INNER JOIN {$destTable} ON
- ( {$destTable}.id = {$linkTable}.{$destCol} AND {$linkTable}.{$sourceCol} IN ($inClause) )
- {$addSql}
- -- keep-cache";
- }
-
- $bindings = array_merge( $linkIDs, $bindings );
-
- $rows = $this->adapter->get( $sql, $bindings );
-
- $this->putResultInCache( $destType, $key, $rows );
-
- return $rows;
- }
-
- /**
- * @see QueryWriter::queryRecordLink
- */
- public function queryRecordLink( $sourceType, $destType, $sourceID, $destID )
- {
- list( $sourceTable, $destTable, $linkTable, $sourceCol, $destCol ) = $this->getRelationalTablesAndColumns( $sourceType, $destType );
-
- $key = $this->getCacheKey( array( $sourceType, $destType, $sourceID, $destID ) );
-
- if ( $this->flagUseCache && $cached = $this->getCached( $linkTable, $key ) ) {
- return $cached;
- }
-
- $sqlFilterStr = '';
- if ( count( self::$sqlFilters ) ) {
- $sqlFilterStr = $this->getSQLFilterSnippet( $destType );
- }
-
- if ( $sourceTable === $destTable ) {
- $sql = "SELECT {$linkTable}.* {$sqlFilterStr} FROM {$linkTable}
- WHERE ( {$sourceCol} = ? AND {$destCol} = ? ) OR
- ( {$destCol} = ? AND {$sourceCol} = ? ) -- keep-cache";
- $row = $this->adapter->getRow( $sql, array( $sourceID, $destID, $sourceID, $destID ) );
- } else {
- $sql = "SELECT {$linkTable}.* {$sqlFilterStr} FROM {$linkTable}
- WHERE {$sourceCol} = ? AND {$destCol} = ? -- keep-cache";
- $row = $this->adapter->getRow( $sql, array( $sourceID, $destID ) );
- }
-
- $this->putResultInCache( $linkTable, $key, $row );
-
- return $row;
- }
-
- /**
- * @see QueryWriter::queryTagged
- */
- public function queryTagged( $type, $tagList, $all = FALSE, $addSql = '', $bindings = array() )
- {
- $assocType = $this->getAssocTable( array( $type, 'tag' ) );
- $assocTable = $this->esc( $assocType );
- $assocField = $type . '_id';
- $table = $this->esc( $type );
- $slots = implode( ',', array_fill( 0, count( $tagList ), '?' ) );
- $score = ( $all ) ? count( $tagList ) : 1;
-
- $sql = "
- SELECT {$table}.*, count({$table}.id) FROM {$table}
- INNER JOIN {$assocTable} ON {$assocField} = {$table}.id
- INNER JOIN tag ON {$assocTable}.tag_id = tag.id
- WHERE tag.title IN ({$slots})
- GROUP BY {$table}.id
- HAVING count({$table}.id) >= ?
- {$addSql}
- ";
-
- $bindings = array_merge( $tagList, array( $score ), $bindings );
- $rows = $this->adapter->get( $sql, $bindings );
- return $rows;
- }
-
- /**
- * @see QueryWriter::queryRecordCount
- */
- public function queryRecordCount( $type, $conditions = array(), $addSql = NULL, $bindings = array() )
- {
- $addSql = $this->glueSQLCondition( $addSql );
-
- $table = $this->esc( $type );
-
- $this->updateCache(); //check if cache chain has been broken
-
- $sql = $this->makeSQLFromConditions( $conditions, $bindings, $addSql );
- $sql = "SELECT COUNT(*) FROM {$table} {$sql} -- keep-cache";
-
- return (int) $this->adapter->getCell( $sql, $bindings );
- }
-
- /**
- * @see QueryWriter::queryRecordCountRelated
- */
- public function queryRecordCountRelated( $sourceType, $destType, $linkID, $addSql = '', $bindings = array() )
- {
- list( $sourceTable, $destTable, $linkTable, $sourceCol, $destCol ) = $this->getRelationalTablesAndColumns( $sourceType, $destType );
-
- $this->updateCache(); //check if cache chain has been broken
-
- if ( $sourceType === $destType ) {
- $sql = "
- SELECT COUNT(*) FROM {$linkTable}
- INNER JOIN {$destTable} ON
- ( {$destTable}.id = {$linkTable}.{$destCol} AND {$linkTable}.{$sourceCol} = ? ) OR
- ( {$destTable}.id = {$linkTable}.{$sourceCol} AND {$linkTable}.{$destCol} = ? )
- {$addSql}
- -- keep-cache";
-
- $bindings = array_merge( array( $linkID, $linkID ), $bindings );
- } else {
- $sql = "
- SELECT COUNT(*) FROM {$linkTable}
- INNER JOIN {$destTable} ON
- ( {$destTable}.id = {$linkTable}.{$destCol} AND {$linkTable}.{$sourceCol} = ? )
- {$addSql}
- -- keep-cache";
-
- $bindings = array_merge( array( $linkID ), $bindings );
- }
-
- return (int) $this->adapter->getCell( $sql, $bindings );
- }
-
- /**
- * @see QueryWriter::deleteRecord
- */
- public function deleteRecord( $type, $conditions = array(), $addSql = NULL, $bindings = array() )
- {
- $addSql = $this->glueSQLCondition( $addSql );
-
- $table = $this->esc( $type );
-
- $sql = $this->makeSQLFromConditions( $conditions, $bindings, $addSql );
- $sql = "DELETE FROM {$table} {$sql}";
-
- $this->adapter->exec( $sql, $bindings );
- }
-
- /**
- * @see QueryWriter::deleteRelations
- */
- public function deleteRelations( $sourceType, $destType, $sourceID )
- {
- list( $sourceTable, $destTable, $linkTable, $sourceCol, $destCol ) = $this->getRelationalTablesAndColumns( $sourceType, $destType );
-
- if ( $sourceTable === $destTable ) {
- $sql = "DELETE FROM {$linkTable}
- WHERE ( {$sourceCol} = ? ) OR
- ( {$destCol} = ? )
- ";
-
- $this->adapter->exec( $sql, array( $sourceID, $sourceID ) );
- } else {
- $sql = "DELETE FROM {$linkTable}
- WHERE {$sourceCol} = ? ";
-
- $this->adapter->exec( $sql, array( $sourceID ) );
- }
- }
-
- /**
- * @see QueryWriter::widenColumn
- */
- public function widenColumn( $type, $property, $dataType )
- {
- if ( !isset($this->typeno_sqltype[$dataType]) ) return FALSE;
-
- $table = $this->esc( $type );
- $column = $this->esc( $property );
-
- $newType = $this->typeno_sqltype[$dataType];
-
- $this->adapter->exec( "ALTER TABLE $table CHANGE $column $column $newType " );
-
- return TRUE;
- }
-
- /**
- * @see QueryWriter::wipe
- */
- public function wipe( $type )
- {
- $table = $this->esc( $type );
-
- $this->adapter->exec( "TRUNCATE $table " );
- }
-
- /**
- * @see QueryWriter::renameAssocTable
- */
- public function renameAssocTable( $from, $to = NULL )
- {
- self::renameAssociation( $from, $to );
- }
-
- /**
- * @see QueryWriter::getAssocTable
- */
- public function getAssocTable( $types )
- {
- return self::getAssocTableFormat( $types );
- }
-
- /**
- * Turns caching on or off. Default: off.
- * If caching is turned on retrieval queries fired after eachother will
- * use a result row cache.
- *
- * @param boolean
- *
- * @return void
- */
- public function setUseCache( $yesNo )
- {
- $this->flushCache();
-
- $this->flagUseCache = (bool) $yesNo;
- }
-
- /**
- * Flushes the Query Writer Cache.
- * Clears the internal query cache array and returns its overall
- * size.
- *
- * @return integer
- */
- public function flushCache( $newMaxCacheSizePerType = NULL )
- {
- if ( !is_null( $newMaxCacheSizePerType ) && $newMaxCacheSizePerType > 0 ) {
- $this->maxCacheSizePerType = $newMaxCacheSizePerType;
- }
- $count = count( $this->cache, COUNT_RECURSIVE );
- $this->cache = array();
- return $count;
- }
-
- /**
- * @deprecated Use esc() instead.
- *
- * @param string $column column to be escaped
- * @param boolean $noQuotes omit quotes
- *
- * @return string
- */
- public function safeColumn( $column, $noQuotes = FALSE )
- {
- return $this->esc( $column, $noQuotes );
- }
-
- /**
- * @deprecated Use esc() instead.
- *
- * @param string $table table to be escaped
- * @param boolean $noQuotes omit quotes
- *
- * @return string
- */
- public function safeTable( $table, $noQuotes = FALSE )
- {
- return $this->esc( $table, $noQuotes );
- }
-
- /**
- * @see QueryWriter::inferFetchType
- */
- public function inferFetchType( $type, $property )
- {
- $type = $this->esc( $type, TRUE );
- $field = $this->esc( $property, TRUE ) . '_id';
- $keys = $this->getKeyMapForType( $type );
-
- foreach( $keys as $key ) {
- if (
- $key['from'] === $field
- ) return $key['table'];
- }
- return NULL;
- }
-
- /**
- * @see QueryWriter::addUniqueConstraint
- */
- public function addUniqueIndex( $type, $properties )
- {
- return $this->addUniqueConstraint( $type, $properties );
- }
-}
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