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<?php |
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/** |
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*-------------------------------------------------------- |
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* This file contains the DataListSource class |
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* that gets the data as an hash. |
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* |
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* |
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* |
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* $Id: MemoryDataListSource.inc,v 1.1 2003/02/28 17:17:59 jonen Exp $ |
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*-------------------------------------------------------- |
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* $Log: MemoryDataListSource.inc,v $ |
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* Revision 1.1 2003/02/28 17:17:59 jonen |
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* + renamed from flibRPCDataListSource.inc |
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* |
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* |
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* |
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*-------------------------------------------------------- |
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*/ |
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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 DataListSource child class gets the date from an hash, |
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* eg an hashed remote object |
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* |
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* |
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*/ |
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class MemoryDataListSource extends DataListSource { |
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|
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|
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/** |
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* given data hash |
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* |
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*/ |
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var $_data_list = array(); |
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|
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|
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|
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/** |
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* this holds the headers read |
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* array keys |
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*/ |
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var $_data_keys = array(); |
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|
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|
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/** |
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* The constructor. |
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* |
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* @param hash - a hashed data object |
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* |
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*/ |
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function MemoryDataListSource( $data_list ) { |
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$this->_data_list = $data_list; |
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//print_r($object_list); |
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} |
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|
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|
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/** |
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* The prequery. We use this to read the file |
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* into memory so we can do operations on the data |
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* (search, sort, etc.) |
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*/ |
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function do_prequery() { |
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$this->_get_header(); |
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} |
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|
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/** |
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* This function does the query |
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* and search/sort |
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*/ |
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function do_query() { |
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foreach ($this->_data_list as $value) { |
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if ($this->add_data_row( $value)) { |
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$count++; |
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} |
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} |
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|
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$this->set_total_rows( $count ); |
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$this->sort(); |
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} |
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|
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/** |
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* This function returns the next row of |
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* valid data. |
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* |
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*/ |
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function get_next_data_row() { |
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$index = $this->get_data_index(); |
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$limit = $this->get_limit(); |
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$offset = $this->get_offset(); |
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|
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if ($limit == -1) { |
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//don't limit the data |
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if ($index > $this->get_total_rows()) { |
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return NULL; |
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} else { |
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return $this->_data[$index]; |
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} |
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} else { |
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$left_to_show = $limit - ($index - $offset); |
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if ($left_to_show > 0) { |
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return $this->_data[$index]; |
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} else { |
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return NULL; |
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} |
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} |
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} |
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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 file trys to get the Object Hash Keys. |
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* |
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*/ |
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function _get_header() { |
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foreach($this->_data_list[0] as $key => $value) { |
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array_push($this->_data_keys, $key); |
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} |
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} |
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|
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|
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function get_header() { |
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$this->_get_header(); |
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return $this->_data_keys; |
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} |
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|
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|
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function get_data_source() { |
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|
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} |
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|
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|
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/** |
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* This function adds a row of data |
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* if necesarry to the data array |
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* |
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*/ |
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function add_data_row($row) { |
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if ($row != NULL) { |
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if ($this->get_searchby_value()) { |
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//user wants to search the data |
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if ($this->_find_data($row) ) { |
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$this->_data[] = $row; |
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return TRUE; |
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} else { |
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return FALSE; |
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} |
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} else { |
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$this->_data[] = $row; |
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return TRUE; |
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} |
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} else { |
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return FALSE; |
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} |
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} |
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|
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function sort() { |
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$sortby = $this->get_orderby(); |
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//ok we need to sort the data by the |
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//column in the table |
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if ($this->_is_column_sortable($sortby)) { |
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//looks like we can sort this column |
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usort($this->_data, array($this, "cmp")); |
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} |
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} |
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|
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function cmp($data1, $data2) { |
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$sortby = $this->get_orderby(); |
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$ret = strnatcmp( $data1[$sortby], $data2[$sortby]); |
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if ($this->get_reverseorder() == "true") { |
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$ret *= -1; |
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} |
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return $ret; |
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} |
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|
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function _find_data( $row_data ) { |
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//look for the 'needle' in the 'haystack' |
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|
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$needle = $this->get_searchby_value(); |
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$haystack = $row_data[$this->get_searchby()]; |
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|
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switch ($this->get_simplesearch_modifier()) { |
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case "BEGINS": |
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if (strncasecmp($needle, $haystack, strlen($needle)) == 0) { |
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return TRUE; |
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} else { |
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return FALSE; |
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} |
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break; |
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|
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case "CONTAINS": |
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if (stristr($haystack, $needle)) { |
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return TRUE; |
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} else { |
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return FALSE; |
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} |
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break; |
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case "EXACT": |
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if (strcasecmp($needle, $haystack) == 0) { |
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return TRUE; |
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} else { |
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return FALSE; |
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} |
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break; |
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case "ENDS": |
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$needle_len = strlen( $needle ); |
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$haystack_len = strlen( $haystack ); |
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if ($needle_len > $haystack_len) { |
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return FALSE; |
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} else if ($needle_len == $haystack_len) { |
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$tmp = $haystack; |
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} else { |
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$tmp = substr($haystack, $haystack_len - $needle_len); |
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} |
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if (strncasecmp($needle, $tmp, $needle_len) == 0) { |
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return TRUE; |
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} else { |
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return FALSE; |
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} |
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break; |
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} |
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} |
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|
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} |
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?> |
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