133 lines
4.9 KiB
PHP
133 lines
4.9 KiB
PHP
<?php
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/**
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* Chart functions used to generate GIS visualizations
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* @package phpMyAdmin
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*/
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require_once './libraries/gis/pma_gis_visualization.php';
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require_once './libraries/gis/pma_gis_geometry.php';
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require_once './libraries/gis/pma_gis_polygon.php';
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require_once './libraries/gis/pma_gis_multipolygon.php';
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require_once './libraries/gis/pma_gis_linestring.php';
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require_once './libraries/gis/pma_gis_multilinestring.php';
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require_once './libraries/gis/pma_gis_point.php';
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require_once './libraries/gis/pma_gis_multipoint.php';
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require_once './libraries/gis/pma_gis_geometrycollection.php';
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/**
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* Returns a modified sql query with only the label column
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* and spatial column(wrapped with 'ASTEXT()' function).
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* @param string $sql_query original sql query
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* @param array $visualizationSettings settings for the visualization
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* @return the modified sql query.
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*/
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function PMA_GIS_modify_query($sql_query, $visualizationSettings) {
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$modified_query = 'SELECT ';
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/**
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* @todo here 0 is not good, resolve it.
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*/
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$analyzed_query = PMA_SQP_analyze(PMA_SQP_parse($sql_query));
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// If select clause is not *
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if (trim($analyzed_query[0]['select_expr_clause']) != '*') {
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// If label column is chosen add it to the query
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if (isset($visualizationSettings['labelColumn'])
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&& $visualizationSettings['labelColumn'] != '')
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{
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// Check to see whether an alias has been used on the label column
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$is_label_alias = false;
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foreach ($analyzed_query[0]['select_expr'] as $select) {
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if ($select['alias'] == $visualizationSettings['labelColumn']) {
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$modified_query .= sanitize($select['expr']) . ' AS `'
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. $select['alias'] . '`, ';
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$is_label_alias = true;
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break;
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}
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}
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// If no alias have been used on the label column
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if (! $is_label_alias) {
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foreach ($analyzed_query[0]['select_expr'] as $select) {
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if ($select['column'] == $visualizationSettings['labelColumn']) {
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$modified_query .= sanitize($select['expr']) . ', ';
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}
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}
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}
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}
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// Check to see whether an alias has been used on the spatial column
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$is_spatial_alias = false;
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foreach ($analyzed_query[0]['select_expr'] as $select) {
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if ($select['alias'] == $visualizationSettings['spatialColumn']) {
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$modified_query .= 'ASTEXT(' . sanitize($select['expr']) . ') AS `'
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. $select['alias'] . '` ';
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$is_spatial_alias = true;
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break;
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}
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}
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// If no alias have been used on the spatial column
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if (! $is_spatial_alias) {
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foreach ($analyzed_query[0]['select_expr'] as $select) {
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if ($select['column'] == $visualizationSettings['spatialColumn']) {
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$modified_query .= 'ASTEXT(' . sanitize($select['expr']) . ') AS `'
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. $select['column'] . '` ';
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}
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}
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}
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// If select cluase is *
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} else {
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// If label column is chosen add it to the query
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if ($visualizationSettings['labelColumn'] != '') {
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$modified_query .= '`' . $visualizationSettings['labelColumn'] .'`, ';
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}
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// Wrap the spacial column with 'ASTEXT()' function and add it
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$modified_query .= 'ASTEXT(`' . $visualizationSettings['spatialColumn'] . '`) AS `'
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. $visualizationSettings['spatialColumn'] . '` ';
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}
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// Append the rest of the query
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$from_pos = stripos($sql_query, 'FROM');
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$modified_query .= substr($sql_query, $from_pos);
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return $modified_query;
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}
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// Local function to sanitize the expression taken
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// from the results of PMA_SQP_analyze function.
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function sanitize($expr) {
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/**
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* @todo code to add missing backquotes
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*/
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return $expr;
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}
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/**
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* Formats a visualization for the GIS query results.
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* @param array $data data for the status chart
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* @param array $chartSettings settings used to generate the chart
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* @return string HTML and JS code for the GIS visualization
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*/
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function PMA_GIS_visualization_results($data, &$visualizationSettings) {
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$visualizationData = array();
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if (!isset($data[0])) {
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// empty data
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return __('No data found for GIS visualization.');
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} else {
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$visualization = new PMA_GIS_visualization($data, $visualizationSettings);
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if ($visualizationSettings != null) {
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foreach ($visualization->getSettings() as $setting => $val) {
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if (! isset($visualizationSettings[$setting])) {
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$visualizationSettings[$setting] = $val;
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}
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}
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}
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// Generate the visualization code
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$visualizationCode = $visualization->toString();
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return $visualizationCode;
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}
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}
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?>
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