class Product {

    // the static url to the product
    String url

    // the product's data or path to product
    // NOTE: data is being written to the file system
	String data

	// arbitrary name for product
	String name

	// subview that this product belongs to
	Subview subview

    excludedProps = ['data']

    /**
     * Called when this obj is loaded from the DB.
     * Loads the data field based on the URL field
     */
    def onLoad = {
        File file = new File(id)
        data = file.read
    }

    /**
     * Called before the model is stored to the DB.  Writes the data contents to
     * the file system and updates the URL field
     */
    def beforeInsert = {
        File file = new File(id)
        file.write data
        data = ""
        url = "product/$id"
    }

    def beforeUpdate = {
        File file = new File(id)
        file.write data
        data = ""
        url = "product/$id"
    }

    def beforeDelete = {
        File file = new File(id)
        file.delete
    }


	// orm mapping to Subview
	static belongsTo = [Subview]

	static constraints = {
		data(blank:true, maxSize:5000)
		url(nullable:true)
	}
}