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#pma/libraries/plugins/schema/dia/DiaRelationSchema.php
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227
#pma/libraries/plugins/schema/dia/DiaRelationSchema.php
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<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Classes to create relation schema in Dia format.
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*
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* @package PhpMyAdmin
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*/
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namespace PMA\libraries\plugins\schema\dia;
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use PMA\libraries\plugins\schema\eps\TableStatsEps;
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use PMA\libraries\plugins\schema\ExportRelationSchema;
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use PMA\libraries\plugins\schema\pdf\TableStatsPdf;
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use PMA\libraries\plugins\schema\svg\TableStatsSvg;
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use PMA\libraries\plugins\schema\dia\TableStatsDia;
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/**
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* Dia Relation Schema Class
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*
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* Purpose of this class is to generate the Dia XML Document
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* which is used for representing the database diagrams in Dia IDE
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* This class uses Database Table and Reference Objects of Dia and with
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* the combination of these objects actually helps in preparing Dia XML.
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*
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* Dia XML is generated by using XMLWriter php extension and this class
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* inherits ExportRelationSchema class has common functionality added
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* to this class
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*
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* @package PhpMyAdmin
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* @name Dia_Relation_Schema
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*/
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class DiaRelationSchema extends ExportRelationSchema
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{
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/**
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* @var TableStatsDia[]|TableStatsEps[]|TableStatsPdf[]|TableStatsSvg[]
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*/
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private $_tables = array();
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/** @var RelationStatsDia[] Relations */
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private $_relations = array();
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private $_topMargin = 2.8222000598907471;
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private $_bottomMargin = 2.8222000598907471;
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private $_leftMargin = 2.8222000598907471;
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private $_rightMargin = 2.8222000598907471;
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public static $objectId = 0;
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/**
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* The "PMA\libraries\plugins\schema\dia\DiaRelationSchema" constructor
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*
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* Upon instantiation This outputs the Dia XML document
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* that user can download
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*
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* @param string $db database name
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*
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* @see Dia,TableStatsDia,RelationStatsDia
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*/
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public function __construct($db)
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{
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parent::__construct($db, new Dia());
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$this->setShowColor(isset($_REQUEST['dia_show_color']));
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$this->setShowKeys(isset($_REQUEST['dia_show_keys']));
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$this->setOrientation($_REQUEST['dia_orientation']);
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$this->setPaper($_REQUEST['dia_paper']);
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$this->diagram->startDiaDoc(
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$this->paper,
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$this->_topMargin,
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$this->_bottomMargin,
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$this->_leftMargin,
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$this->_rightMargin,
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$this->orientation
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);
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$alltables = $this->getTablesFromRequest();
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foreach ($alltables as $table) {
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if (!isset($this->tables[$table])) {
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$this->_tables[$table] = new TableStatsDia(
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$this->diagram, $this->db, $table, $this->pageNumber,
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$this->showKeys, $this->offline
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);
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}
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}
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$seen_a_relation = false;
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foreach ($alltables as $one_table) {
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$exist_rel = PMA_getForeigners($this->db, $one_table, '', 'both');
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if (!$exist_rel) {
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continue;
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}
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$seen_a_relation = true;
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foreach ($exist_rel as $master_field => $rel) {
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/* put the foreign table on the schema only if selected
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* by the user
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* (do not use array_search() because we would have to
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* to do a === false and this is not PHP3 compatible)
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*/
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if ($master_field != 'foreign_keys_data') {
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if (in_array($rel['foreign_table'], $alltables)) {
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$this->_addRelation(
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$one_table,
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$master_field,
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$rel['foreign_table'],
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$rel['foreign_field'],
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$this->showKeys
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);
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}
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continue;
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}
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foreach ($rel as $one_key) {
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if (!in_array($one_key['ref_table_name'], $alltables)) {
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continue;
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}
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foreach ($one_key['index_list'] as $index => $one_field) {
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$this->_addRelation(
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$one_table,
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$one_field,
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$one_key['ref_table_name'],
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$one_key['ref_index_list'][$index],
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$this->showKeys
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);
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}
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}
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}
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}
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$this->_drawTables();
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if ($seen_a_relation) {
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$this->_drawRelations();
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}
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$this->diagram->endDiaDoc();
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}
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/**
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* Output Dia Document for download
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*
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* @return void
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* @access public
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*/
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public function showOutput()
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{
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$this->diagram->showOutput($this->getFileName('.dia'));
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}
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/**
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* Defines relation objects
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*
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* @param string $masterTable The master table name
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* @param string $masterField The relation field in the master table
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* @param string $foreignTable The foreign table name
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* @param string $foreignField The relation field in the foreign table
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* @param bool $showKeys Whether to display ONLY keys or not
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*
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* @return void
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*
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* @access private
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* @see TableStatsDia::__construct(),RelationStatsDia::__construct()
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*/
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private function _addRelation(
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$masterTable,
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$masterField,
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$foreignTable,
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$foreignField,
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$showKeys
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) {
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if (!isset($this->_tables[$masterTable])) {
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$this->_tables[$masterTable] = new TableStatsDia(
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$this->diagram, $this->db, $masterTable, $this->pageNumber, $showKeys
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);
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}
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if (!isset($this->_tables[$foreignTable])) {
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$this->_tables[$foreignTable] = new TableStatsDia(
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$this->diagram,
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$this->db,
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$foreignTable,
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$this->pageNumber,
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$showKeys
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);
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}
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$this->_relations[] = new RelationStatsDia(
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$this->diagram,
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$this->_tables[$masterTable],
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$masterField,
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$this->_tables[$foreignTable],
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$foreignField
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);
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}
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/**
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* Draws relation references
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*
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* connects master table's master field to
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* foreign table's foreign field using Dia object
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* type Database - Reference
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*
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* @return void
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*
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* @access private
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* @see RelationStatsDia::relationDraw()
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*/
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private function _drawRelations()
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{
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foreach ($this->_relations as $relation) {
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$relation->relationDraw($this->showColor);
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}
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}
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/**
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* Draws tables
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*
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* Tables are generated using Dia object type Database - Table
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* primary fields are underlined and bold in tables
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*
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* @return void
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*
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* @access private
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* @see TableStatsDia::tableDraw()
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*/
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private function _drawTables()
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{
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foreach ($this->_tables as $table) {
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$table->tableDraw($this->showColor);
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}
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}
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}
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