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<?php
/*
* PHP Base Library
*
* Copyright (c) 1998-2000 NetUSE AG
* Boris Erdmann, Kristian Koehntopp
*
* $Id: sqlquery.inc,v 1.2 2000/07/12 18:22:35 kk Exp $
*
*/
class Sql_Query {
var $classname = "Sql_Query"; ## Persistence Support
var $persistent_slots = array(
"conditions", "input_size", "input_max", "method", "lang", "translate", "container", "variable"
);
var $conditions = 1; ## Allow for that many Query Conditions
var $input_size = 20; ## Used in text input field creation
var $input_max = 80;
var $method = "post"; ## Generate get or post form...
var $lang = "en"; ## HTML Widget language
var $translate = "on"; ## If set, translate column names
var $container = "on"; ## If set, create a container table
var $variable = "on"; ## if set, create variable size buttons
## HTML Widget dictionary
var $dict = array(
"de" => array(
"searchfor" => "Suchen nach:",
"and" => "und",
"or" => "oder",
"like" => "enthlt",
"reset" => "Neu",
"submit" => "Ausfhren",
"less" => "Weniger",
"more" => "Mehr"
),
"en" => array(
"searchfor" => "Search for:",
"and" => "and",
"or" => "or",
"like" => "contains",
"reset" => "Reset Query",
"submit" => "Submit Query",
"less" => "Fewer",
"more" => "More"
)
);
## SQL comparision dictionary
var $compare = array(
"like" => "like",
">" => ">",
"<" => "<",
">=" => ">=",
"<=" => "<=",
"=" => "=",
"<>" => "<>"
);
function start($class = "") {
}
## selection:
##
## Create a <select> tag of the class $class with the name $name.
## The tag contains the options named in array $option. If $trans
## is true, $option is exspected to be a hash of
## "long name " => "sqlname" pairs. The option matching $old
## is created with the attribute "selected".
##
function selection($name, $option, $old = "", $trans = "", $class = "") {
$res = "";
$res .= sprintf("<select%s name=\"%s\">\n",
($class)?" class=$class":"",
$name);
reset($option);
while(list($k, $v) = each($option)) {
if (($trans == "" && $old == $v)
|| ($trans != "" && $old == $k)) {
$selected = " selected";
} else {
$selected = "";
}
$res .= sprintf("<option value=\"%s\"%s%s>%s\n",
($trans)?$k:$v,
($class)?" class=$class":"",
($selected)?" selected":"",
$v);
}
$res .= sprintf(" </select>");
return $res;
}
## fieldname:
##
## Given a basename $base, and attribute name $att and an attribute
## number $num, this functions returns an input field name
## $base[$name_$num].
##
## This construct can be imported into a function namespace with a
## single global instruction and the field name can be easily
## exploded into component names and numbers.
function makename($base, $att, $num) {
return sprintf("%s[%s_%d]", $base, $att, $num);
}
## form:
##
## Draw SQL Query selection form.
##
function form($base, $option, $class = "", $target = "") {
global $sess;
##
## load the HTML results of this function into $res.
##
$res = "";
## A hack. We cannot do language dependent initialisation of
## static values.
if (isset($this->compare["like"])) {
$this->compare["like"] = $this->dict[$this->lang]["like"];
}
## Prepare a self-directed container form
if ($this->container) {
$res .= sprintf("<table border=1%s><tr%s><td>\n",
($class)?" class=$class":"",
($class)?" class=$class":"",
($class)?" class=$class":"");
}
$res .= sprintf("<form method=\"%s\" action=\"%s\">\n",
$this->method,
($target)?$target:$sess->self_url());
## Prepare the inner table, laying out the selection elements
$res .= sprintf("<table%s>\n", ($class)?" class=$class":"");
## Build $this->conditions many selection elements
for ($i=1; $i<= $this->conditions; $i++) {
$res .= sprintf(" <tr%s>\n", ($class)?" class=$class":"");
## Build conjunction (first row does not have a conjunction)
if ($i == 1) {
$res .= sprintf(" <td%s>%s</td>\n",
($class)?" class=$class":"",
$this->dict[$this->lang]["searchfor"]);
} else {
$res .= sprintf(" <td%s>%s</td>\n",
($class)?" class=$class":"",
$this->selection($this->makename($base, "conj", $i),
array("and" => $this->dict[$this->lang]["and"], "or" => $this->dict[$this->lang]["or"]),
$GLOBALS[$base]["conj_".$i],
"on",
$class));
}
## Build field selection
$res .= sprintf(" <td%s>%s</td>\n",
($class)?" class=$class":"",
$this->selection(
$this->makename($base, "sel", $i),
$option,
$GLOBALS[$base]["sel_".$i],
$this->translate,
$class));
## Build comparison selection
$res .= sprintf(" <td%s>%s</td>\n",
($class)?" class=$class":"",
$this->selection(
$this->makename($base, "comp", $i),
$this->compare,
$GLOBALS[$base]["comp_".$i],
"on",
$class));
## Create text input field.
$res .= sprintf(" <td%s><input type=\"text\" name=\"%s\" value=\"%s\" size=%d maxlength=%d%s></td>\n",
($class)?" class=$class":"",
$this->makename($base, "input", $i),
$GLOBALS[$base]["input_".$i],
$this->input_size,
$this->input_max,
($class)?" class=$class":"");
$res .= sprintf(" </tr>\n");
}
## Create variable size buttons
$res .= sprintf(" <tr%s>\n", ($class)?" class=$class":"");
$res .= sprintf(" <td%s> </td>\n", ($class)?" class=$class":"");
if ($this->variable) {
$res .= sprintf(" <td%s><input type=\"submit\" name=\"%s\" value=\"%s\"> ",
($class)?" class=$class":"",
$this->makename($base, "more", 0),
$this->dict[$this->lang]["more"]);
$res .= sprintf("<input type=\"submit\" name=\"%s\"value=\"%s\"></td>\n",
$this->makename($base, "less", 0),
$this->dict[$this->lang]["less"]);
} else {
$res .= sprintf(" <td%s> </td>\n", ($class)?" class=$class":"");
}
$res .= sprintf(" <td%s> </td>\n", ($class)?" class=$class":"");
$res .= sprintf(" <td%s><input type=\"reset\" value=\"%s\"> ",
($class)?" class=$class":"",
$this->dict[$this->lang]["reset"]);
$res .= sprintf("<input type=\"submit\" name=\"%s\"value=\"%s\"></td>\n",
$this->makename($base, "submit", 0),
$this->dict[$this->lang]["submit"]);
$res .= sprintf(" </tr>\n");
$res .= sprintf("</table>\n");
$res .= sprintf("</form>\n");
if ($this->container) {
$res .= sprintf("</td></tr></table>\n");
}
$res .= sprintf("<!-- End %s generated query form -->\n", $this->classname);
return $res;
}
## plain_where:
##
## Given a base variable name, creates a condition suitable for
## the where clause of a SQL query.
##
function plain_where($base) {
for($i=1; $i<=$this->conditions; $i++) {
## Only create conditions for used input fields
if ($GLOBALS[$base]["input_".$i] == "")
continue;
## If necessary, add conjunction
if ($q != "")
$q .= sprintf(" %s ", $GLOBALS[$base]["conj_".$i]);
## Handle "like"
if ($GLOBALS[$base]["comp_".$i] == "like")
$v = "%".$GLOBALS[$base]["input_".$i]."%";
else
$v = $GLOBALS[$base]["input_".$i];
## Create subcondition
$q .= sprintf("%s %s '%s'",
$GLOBALS[$base]["sel_".$i],
$GLOBALS[$base]["comp_".$i],
$v);
}
if (!$q) {
$q = "1=0";
}
return "( $q )";
}
## translated_plain_where:
##
## Given a base variable name, creates a translated version of
## the where clause of a SQL query.
##
function translated_plain_where($base, $field) {
for($i=1; $i<=$this->conditions; $i++) {
## Only create conditions for used input fields
if ($GLOBALS[$base]["input_".$i] == "")
continue;
## If necessary, add conjunction
if ($q != "")
$q .= sprintf(" %s ", $this->dict[$this->lang][$GLOBALS[$base]["conj_".$i]]);
## Handle "like"
if ($GLOBALS[$base]["comp_".$i] == "like")
$c = $this->dict[$this->lang][$GLOBALS[$base]["comp_".$i]];
else
$c = $this->compare[$GLOBALS[$base]["comp_".$i]];
## Create subcondition
$q .= sprintf("%s %s '%s'",
$field[$GLOBALS[$base]["sel_".$i]],
$c,
$GLOBALS[$base]["input_".$i]);
}
if (!$q) {
$q = "1=0";
}
return "( $q )";
}
## where:
##
## Same as plain_where(), but also inspects the submit button
## used to submit the query. Changes $this->conditions appropriately.
function where($base, $incr = 1) {
if (isset($GLOBALS[$base]["less_0"]))
$this->conditions -= $incr;
if (isset($GLOBALS[$base]["more_0"]))
$this->conditions += $incr;
if ($this->conditions < 1)
$this->conditions = 1;
return $this->plain_where($base);
}
}
?>
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