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<? |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// |
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// WddxRecordset |
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// |
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/////////////////////////////////////////////////////////////////////////// |
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|
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class WddxRecordset { |
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|
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var $matrix = array(); |
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var $preserveFieldCase = '1'; |
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|
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|
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/* |
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/////////////////////////////////////////////////////////////////////////// |
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// isColumn(name) returns true/false based on whether this is a column name |
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function wddxRecordset_isColumn(name) |
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{ |
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// Columns must be objects |
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// WddxRecordset extensions might use properties prefixed with |
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// _private_ and these will not be treated as columns |
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return (typeof(this[name]) == "object" && |
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name.indexOf("_private_") == -1); |
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} |
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*/ |
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// getRowCount() returns the number of rows in the recordset |
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|
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function getRowCount() |
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{ |
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|
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$nRowCount = 0; |
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reset ($this->matrix); |
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while (list($key, $val) = each ($this->matrix)) { |
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|
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$nRowCount = count($this->matrix[$key]); |
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return $nRowCount; |
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|
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} |
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|
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} |
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// addColumn(name) adds a column with that name and length == getRowCount() |
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function addColumn($name) |
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{ |
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|
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$this->matrix["$name"]["0"] = ''; |
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$nLen = $this->getRowCount(); |
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|
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for ($i = 0; $i < $nLen; $i++) |
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{ |
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$this->matrix["$name"]["$i"] = ''; |
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} |
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// $this[$this->preserveFieldCase ? $name : lc($name)] = $colValue; |
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// $this->matrix[$name][0] = $colValue; |
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} |
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// addRows() adds n rows to all columns of the recordset |
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function addRows($n) |
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{ |
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|
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reset ($this->matrix); |
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while (list($key, $val) = each ($this->matrix)) { |
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|
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$nRowCount = count($this->matrix[$key]); |
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for ($i = $nRowCount; $i < $nRowCount + $n; ++$i) |
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{ |
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$this->matrix["$key"]["$i"] = ''; |
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} |
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|
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} |
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|
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/* |
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for (var col in this) |
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{ |
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if (this.isColumn(col)) |
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{ |
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var nLen = this[col].length; |
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for (var i = nLen; i < nLen + n; ++i) |
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{ |
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this[col][i] = ''; |
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} |
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} |
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} |
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*/ |
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} |
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// getField() returns the element in a given (row, col) position |
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function getField($row, $col) |
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{ |
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// return this[this.preserveFieldCase ? col : col.toLowerCase()][row]; |
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return $this->matrix[$col][$row]; |
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} |
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// setField() sets the element in a given (row, col) position to value |
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function setField($row, $col, $value) |
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{ |
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// this[this.preserveFieldCase ? col : col.toLowerCase()][row] = value; |
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$this->matrix[$col][$row] = $value; |
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} |
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|
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// wddxSerialize() serializes a recordset |
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// returns true/false |
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function wddxSerialize(&$serializer) |
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{ |
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// Create an array and a list of column names |
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$colNamesList = ""; |
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$colNames = array(); |
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$i = 0; |
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|
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reset ($this->matrix); |
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$priv_bool_isFirst = 1; |
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while (list($key, $val) = each ($this->matrix)) { |
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|
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$colNames[$i] = $key; |
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$i++; |
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|
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if (!$priv_bool_isFirst) |
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{ |
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$colNamesList .= ","; |
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} |
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$colNamesList .= $key; |
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|
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$priv_bool_isFirst = 0; |
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} |
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|
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|
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/* |
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for (var col in this) |
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{ |
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if (this.isColumn(col)) |
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{ |
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colNames[i++] = col; |
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|
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if (colNamesList.length > 0) |
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{ |
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colNamesList += ","; |
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} |
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colNamesList += col; |
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} |
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} |
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*/ |
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|
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$nRows = $this->getRowCount(); |
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|
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$serializer->write("<recordset rowCount='" . $nRows . "' fieldNames='" . $colNamesList . "'>"); |
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|
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$j = 0; |
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$bSuccess = true; |
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|
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for ($j = 0; $bSuccess && $j < count($colNames); $j++) |
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{ |
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$name = $colNames[$j]; |
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$serializer->write("<field name='" . $name . "'>"); |
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|
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for ($row = 0; $bSuccess && $row < $nRows; $row++) |
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{ |
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$bSuccess = $serializer->serializeValue($this->matrix[$name][$row]); |
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} |
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|
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$serializer->write("</field>"); |
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} |
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|
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$serializer->write("</recordset>"); |
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|
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return $bSuccess; |
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} |
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|
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|
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/* |
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/////////////////////////////////////////////////////////////////////////// |
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// dump(escapeStrings) returns an HTML table with the recordset data |
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// It is a convenient routine for debugging and testing recordsets |
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// The boolean parameter escapeStrings determines whether the <>& |
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// characters in string values are escaped as <>& |
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function wddxRecordset_dump(escapeStrings) |
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{ |
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// Get row count |
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var nRows = this.getRowCount(); |
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|
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// Determine column names |
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var colNames = new Array(); |
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var i = 0; |
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for (var col in this) |
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{ |
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if (typeof(this[col]) == "object") |
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{ |
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colNames[i++] = col; |
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} |
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} |
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|
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// Build table headers |
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var o = "<table border=1><tr><td><b>RowNumber</b></td>"; |
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for (i = 0; i < colNames.length; ++i) |
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{ |
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o += "<td><b>" + colNames[i] + "</b></td>"; |
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} |
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o += "</tr>"; |
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|
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// Build data cells |
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for (var row = 0; row < nRows; ++row) |
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{ |
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o += "<tr><td>" + row + "</td>"; |
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for (i = 0; i < colNames.length; ++i) |
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{ |
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var elem = this.getField(row, colNames[i]); |
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if (escapeStrings && typeof(elem) == "string") |
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{ |
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var str = ""; |
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for (var j = 0; j < elem.length; ++j) |
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{ |
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var ch = elem.charAt(j); |
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if (ch == '<') |
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{ |
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str += "<"; |
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} |
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else if (ch == '>') |
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{ |
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str += ">"; |
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} |
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else if (ch == '&') |
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{ |
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str += "&"; |
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} |
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else |
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{ |
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str += ch; |
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} |
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} |
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o += ("<td>" + str + "</td>"); |
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} |
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else |
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{ |
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o += ("<td>" + elem + "</td>"); |
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} |
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} |
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o += "</tr>"; |
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} |
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|
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// Close table |
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o += "</table>"; |
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|
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// Return HTML recordset dump |
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return o; |
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} |
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|
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|
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/////////////////////////////////////////////////////////////////////////// |
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// WddxRecordset([flagPreserveFieldCase]) creates an empty recordset. |
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// WddxRecordset(columns [, flagPreserveFieldCase]) creates a recordset |
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// with a given set of columns provided as an array of strings. |
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// WddxRecordset(columns, rows [, flagPreserveFieldCase]) creates a |
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// recordset with these columns and some number of rows. |
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// In all cases, flagPreserveFieldCase determines whether the exact case |
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// of field names is preserved. If omitted, the default value is false |
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// which means that all field names will be lowercased. |
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function WddxRecordset() |
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{ |
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// Add default properties |
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this.preserveFieldCase = false; |
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|
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// Add extensions |
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if (typeof(wddxRecordsetExtensions) == "object") |
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{ |
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for (var prop in wddxRecordsetExtensions) |
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{ |
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// Hook-up method to WddxRecordset object |
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this[prop] = wddxRecordsetExtensions[prop] |
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} |
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} |
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|
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// Add built-in methods |
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this.getRowCount = wddxRecordset_getRowCount; |
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this.addColumn = wddxRecordset_addColumn; |
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this.addRows = wddxRecordset_addRows; |
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this.isColumn = wddxRecordset_isColumn; |
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this.getField = wddxRecordset_getField; |
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this.setField = wddxRecordset_setField; |
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this.wddxSerialize = wddxRecordset_wddxSerialize; |
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this.dump = wddxRecordset_dump; |
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|
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// Perfom any needed initialization |
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if (WddxRecordset.arguments.length > 0) |
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{ |
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if (typeof(val = WddxRecordset.arguments[0].valueOf()) == "boolean") |
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{ |
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// Case preservation flag is provided as 1st argument |
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this.preserveFieldCase = WddxRecordset.arguments[0]; |
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} |
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else |
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{ |
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// First argument is the array of column names |
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var cols = WddxRecordset.arguments[0]; |
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|
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// Second argument could be the length or the preserve case flag |
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var nLen = 0; |
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if (WddxRecordset.arguments.length > 1) |
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{ |
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if (typeof(val = WddxRecordset.arguments[1].valueOf()) == "boolean") |
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{ |
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// Case preservation flag is provided as 2nd argument |
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this.preserveFieldCase = WddxRecordset.arguments[1]; |
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} |
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else |
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{ |
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// Explicitly specified recordset length |
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nLen = WddxRecordset.arguments[1]; |
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|
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if (WddxRecordset.arguments.length > 2) |
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{ |
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// Case preservation flag is provided as 3rd argument |
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this.preserveFieldCase = WddxRecordset.arguments[2]; |
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} |
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} |
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} |
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|
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for (var i = 0; i < cols.length; ++i) |
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{ |
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var colValue = new Array(nLen); |
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for (var j = 0; j < nLen; ++j) |
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{ |
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colValue[j] = null; |
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} |
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|
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this[this.preserveFieldCase ? cols[i] : cols[i].toLowerCase()] = colValue; |
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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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