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<?php
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/**
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* Contains PhpMyAdmin\Plugins\Schema\Dia\RelationStatsDia class
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin\Plugins\Schema\Dia;
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use function array_search;
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use function shuffle;
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/**
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* Relation preferences/statistics
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*
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* This class fetches the table master and foreign fields positions
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* and helps in generating the Table references and then connects
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* master table's master field to foreign table's foreign key
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* in dia XML document.
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*/
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class RelationStatsDia
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{
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/** @var Dia */
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protected $diagram;
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/** @var mixed */
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public $srcConnPointsRight;
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/** @var mixed */
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public $srcConnPointsLeft;
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/** @var mixed */
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public $destConnPointsRight;
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/** @var mixed */
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public $destConnPointsLeft;
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/** @var int */
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public $masterTableId;
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/** @var int */
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public $foreignTableId;
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/** @var mixed */
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public $masterTablePos;
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/** @var mixed */
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public $foreignTablePos;
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/** @var string */
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public $referenceColor = '#000000';
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/**
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* @see Relation_Stats_Dia::getXy
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*
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* @param Dia $diagram The DIA diagram
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* @param TableStatsDia $master_table The master table name
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* @param string $master_field The relation field in the master table
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* @param TableStatsDia $foreign_table The foreign table name
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* @param string $foreign_field The relation field in the foreign table
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*/
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public function __construct(
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$diagram,
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$master_table,
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$master_field,
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$foreign_table,
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$foreign_field
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) {
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$this->diagram = $diagram;
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$src_pos = $this->getXy($master_table, $master_field);
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$dest_pos = $this->getXy($foreign_table, $foreign_field);
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$this->srcConnPointsLeft = $src_pos[0];
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$this->srcConnPointsRight = $src_pos[1];
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$this->destConnPointsLeft = $dest_pos[0];
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$this->destConnPointsRight = $dest_pos[1];
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$this->masterTablePos = $src_pos[2];
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$this->foreignTablePos = $dest_pos[2];
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$this->masterTableId = $master_table->tableId;
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$this->foreignTableId = $foreign_table->tableId;
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}
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/**
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* Each Table object have connection points
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* which is used to connect to other objects in Dia
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* we detect the position of key in fields and
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* then determines its left and right connection
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* points.
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*
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* @param TableStatsDia $table The current table name
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* @param string $column The relation column name
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*
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* @return array Table right,left connection points and key position
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*/
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private function getXy($table, $column)
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{
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$pos = array_search($column, $table->fields);
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// left, right, position
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$value = 12;
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if ($pos != 0) {
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return [
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$pos + $value + $pos,
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$pos + $value + $pos + 1,
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$pos,
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];
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}
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return [
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$pos + $value,
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$pos + $value + 1,
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$pos,
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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 foreign table's
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* foreign field using Dia object type Database - Reference
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* Dia object is used to generate the XML of Dia Document.
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* Database reference Object and their attributes are involved
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* in the combination of displaying Database - reference on Dia Document.
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*
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* @see PDF
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*
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* @param bool $showColor Whether to use one color per relation or not
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* if showColor is true then an array of $listOfColors
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* will be used to choose the random colors for
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* references lines. we can change/add more colors to
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* this
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*
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* @return bool|void
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*/
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public function relationDraw($showColor)
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{
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++DiaRelationSchema::$objectId;
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/*
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* if source connection points and destination connection
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* points are same then return it false and don't draw that
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* relation
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*/
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if ($this->srcConnPointsRight == $this->destConnPointsRight) {
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if ($this->srcConnPointsLeft == $this->destConnPointsLeft) {
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return false;
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}
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}
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if ($showColor) {
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$listOfColors = [
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'FF0000',
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'000099',
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'00FF00',
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];
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shuffle($listOfColors);
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$this->referenceColor = '#' . $listOfColors[0] . '';
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} else {
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$this->referenceColor = '#000000';
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}
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$this->diagram->writeRaw(
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'<dia:object type="Database - Reference" version="0" id="'
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. DiaRelationSchema::$objectId . '">
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<dia:attribute name="obj_pos">
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<dia:point val="3.27,18.9198"/>
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</dia:attribute>
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<dia:attribute name="obj_bb">
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<dia:rectangle val="2.27,8.7175;17.7679,18.9198"/>
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</dia:attribute>
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<dia:attribute name="meta">
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<dia:composite type="dict"/>
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</dia:attribute>
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<dia:attribute name="orth_points">
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<dia:point val="3.27,18.9198"/>
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<dia:point val="2.27,18.9198"/>
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<dia:point val="2.27,14.1286"/>
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<dia:point val="17.7679,14.1286"/>
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<dia:point val="17.7679,9.3375"/>
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<dia:point val="16.7679,9.3375"/>
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</dia:attribute>
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<dia:attribute name="orth_orient">
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<dia:enum val="0"/>
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<dia:enum val="1"/>
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<dia:enum val="0"/>
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<dia:enum val="1"/>
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<dia:enum val="0"/>
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</dia:attribute>
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<dia:attribute name="orth_autoroute">
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<dia:boolean val="true"/>
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</dia:attribute>
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<dia:attribute name="text_colour">
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<dia:color val="#000000"/>
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</dia:attribute>
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<dia:attribute name="line_colour">
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<dia:color val="' . $this->referenceColor . '"/>
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</dia:attribute>
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<dia:attribute name="line_width">
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<dia:real val="0.10000000000000001"/>
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</dia:attribute>
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<dia:attribute name="line_style">
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<dia:enum val="0"/>
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<dia:real val="1"/>
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</dia:attribute>
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<dia:attribute name="corner_radius">
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<dia:real val="0"/>
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</dia:attribute>
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<dia:attribute name="end_arrow">
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<dia:enum val="22"/>
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</dia:attribute>
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<dia:attribute name="end_arrow_length">
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<dia:real val="0.5"/>
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</dia:attribute>
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<dia:attribute name="end_arrow_width">
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<dia:real val="0.5"/>
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</dia:attribute>
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<dia:attribute name="start_point_desc">
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<dia:string>#1#</dia:string>
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</dia:attribute>
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<dia:attribute name="end_point_desc">
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<dia:string>#n#</dia:string>
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</dia:attribute>
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<dia:attribute name="normal_font">
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<dia:font family="monospace" style="0" name="Courier"/>
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</dia:attribute>
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<dia:attribute name="normal_font_height">
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<dia:real val="0.59999999999999998"/>
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</dia:attribute>
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<dia:connections>
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<dia:connection handle="0" to="'
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. $this->masterTableId . '" connection="'
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. $this->srcConnPointsRight . '"/>
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<dia:connection handle="1" to="'
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. $this->foreignTableId . '" connection="'
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. $this->destConnPointsRight . '"/>
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</dia:connections>
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</dia:object>'
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);
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}
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}
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