visualizer / classes / Visualizer / Source.php

Source.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 1.5.3, at classes/Visualizer/Source.php

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1	<?php
2
3	// +----------------------------------------------------------------------+
4	// \| Copyright 2013 Madpixels (email : visualizer@madpixels.net) \|
5	// +----------------------------------------------------------------------+
6	// \| This program is free software; you can redistribute it and/or modify \|
7	// \| it under the terms of the GNU General Public License, version 2, as \|
8	// \| published by the Free Software Foundation. \|
9	// \| \|
10	// \| This program is distributed in the hope that it will be useful, \|
11	// \| but WITHOUT ANY WARRANTY; without even the implied warranty of \|
12	// \| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the \|
13	// \| GNU General Public License for more details. \|
14	// \| \|
15	// \| You should have received a copy of the GNU General Public License \|
16	// \| along with this program; if not, write to the Free Software \|
17	// \| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, \|
18	// \| MA 02110-1301 USA \|
19	// +----------------------------------------------------------------------+
20	// \| Author: Eugene Manuilov <eugene@manuilov.org> \|
21	// +----------------------------------------------------------------------+
22
23	/**
24	* The abstract class for source managers.
25	*
26	* @category Visualizer
27	* @package Source
28	*
29	* @since 1.0.0
30	* @abstract
31	*/
32	abstract class Visualizer_Source {
33
34	/**
35	* The array of data.
36	*
37	* @since 1.0.0
38	*
39	* @access protected
40	* @var array
41	*/
42	protected $_data = array();
43
44	/**
45	* The array of series.
46	*
47	* @since 1.0.0
48	*
49	* @access protected
50	* @var array
51	*/
52	protected $_series = array();
53
54	/**
55	* Returns source name.
56	*
57	* @since 1.0.0
58	*
59	* @abstract
60	* @access public
61	* @return string The name of source.
62	*/
63	public abstract function getSourceName();
64
65	/**
66	* Fetches information from source, parses it and builds series and data arrays.
67	*
68	* @since 1.0.0
69	*
70	* @abstract
71	* @access public
72	*/
73	public abstract function fetch();
74
75	/**
76	* Returns series parsed from source.
77	*
78	* @since 1.0.0
79	*
80	* @access public
81	* @return array The array of series.
82	*/
83	public function getSeries() {
84	return $this->_series;
85	}
86
87	/**
88	* Returns data parsed from source.
89	*
90	* @since 1.0.0
91	*
92	* @access public
93	* @return string The serialized array of data.
94	*/
95	public function getData() {
96	return serialize( $this->_data );
97	}
98
99	/**
100	* Returns raw data array.
101	*
102	* @since 1.1.0
103	*
104	* @access public
105	* @return array
106	*/
107	public function getRawData() {
108	return $this->_data;
109	}
110
111	/**
112	* Normalizes values according to series' type.
113	*
114	* @since 1.0.0
115	*
116	* @access protected
117	* @param array $data The row of data.
118	* @return array Normalized row of data.
119	*/
120	protected function _normalizeData( $data ) {
121	// normalize values
122	//print_r($data);
123	foreach ( $this->_series as $i => $series ) {
124	// if no value exists for the seires, then add null
125	if ( !isset( $data[$i] ) ) {
126	$data[$i] = null;
127	}
128
129	if ( is_null( $data[$i] ) && !is_numeric($data[$i])) {
130	continue;
131	}
132
133	switch ( $series['type'] ) {
134	case 'number':
135	$data[$i] = ( is_numeric($data[$i]) ) ? floatval( $data[$i] ) : null;
136	break;
137	case 'boolean':
138	$data[$i] = !empty( $data[$i] ) ? filter_validate( $data[$i], FILTER_VALIDATE_BOOLEAN ) : null;
139	break;
140	case 'timeofday':
141	$date = new DateTime( '1984-03-16T' . $data[$i] );
142	if ( $date ) {
143	$data[$i] = array(
144	intval( $date->format( 'H' ) ),
145	intval( $date->format( 'i' ) ),
146	intval( $date->format( 's' ) ),
147	0,
148	);
149	}
150	break;
151	}
152	}
153	return $data;
154	}
155
156	/**
157	* Validates series tyeps.
158	*
159	* @since 1.0.1
160	*
161	* @static
162	* @access protected
163	* @param array $types The icoming series types.
164	* @return boolean TRUE if sereis types are valid, otherwise FALSE.
165	*/
166	protected static function _validateTypes( $types ) {
167	$allowed_types = array( 'string', 'number', 'boolean', 'date', 'datetime', 'timeofday' );
168	foreach ( $types as $type ) {
169	if ( !in_array( $type, $allowed_types ) ) {
170	return false;
171	}
172	}
173
174	return true;
175	}
176
177	/**
178	* Re populates series if the source is dynamic.
179	*
180	* @since 1.1.0
181	*
182	* @access public
183	* @param array $series The actual array of series.
184	* @param int $chart_id The chart id.
185	* @return array The re populated array of series or old one.
186	*/
187	public function repopulateSeries( $series, $chart_id ) {
188	return $series;
189	}
190
191	/**
192	* Re populates data if the source is dynamic.
193	*
194	* @since 1.1.0
195	*
196	* @access public
197	* @param array $data The actual array of data.
198	* @param int $chart_id The chart id.
199	* @return array The re populated array of data or old one.
200	*/
201	public function repopulateData( $data, $chart_id ) {
202	return $data;
203	}
204
205	}