all models into model folder

app/Models/XmlCache.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use App\Models\Dataset;
+
+class XmlCache extends Model
+{
+    /**
+     * The database table used by the model.
+     *
+     * @var string
+     */
+    protected $table = 'document_xml_cache';
+    public $timestamps = false;
+
+
+    /**
+     * primaryKey
+     *
+     * @var integer
+     * @access protected
+     */
+    protected $primaryKey = null;
+    public $incrementing = false;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['document_id', 'xml_version', 'server_date_modified', 'xml_data'];
+
+    /**
+     * Get the dataset that owns the xml cache.
+     */
+    public function dataset()
+    {
+        return $this->belongsTo(Dataset::class, 'document_id', 'id');
+    }
+
+    /**
+     * Get dom document of 'xml_data' string
+     *
+     * @return \DOMDocument
+     */
+    public function getDomDocument()
+    {
+        $dom = new \DOMDocument('1.0', 'utf-8');
+        $xmlData = $this->xml_data;
+        $dom->loadXML($xmlData);
+        return $dom;
+    }
+
+    /**
+     * Check if a document in a specific xml version is already cached or not.
+     *
+     * @param mixed $datasetId
+     * @param mixed $xmlVersion
+     * @param mixed $serverDateModified
+     * @return bool Returns true on cached hit else false.
+     */
+    //public function scopeHasValidEntry($query, $datasetId, $xmlVersion, $serverDateModified)
+    //{
+    //    //$select = $this->_table->select()->from($this->_table);
+    //    $query->where('document_id = ?', $datasetId)
+    //        ->where('xml_version = ?', $xmlVersion)
+    //        ->where('server_date_modified = ?', $serverDateModified);
+
+    //    $row = $query->get();
+
+    //    if (null === $row)
+    //    {
+    //       return false;
+    //    }
+    //    else
+    //    {
+    //        return true;
+    //    }
+    //}
+}