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/* --------------------- db index ------------ */
SQL.Key = function(owner, type, name) {
this.owner = owner;
this.rows = [];
this.type = type || "INDEX";
this.name = name || "";
SQL.Visual.apply(this);
}
SQL.Key.prototype = Object.create(SQL.Visual.prototype);
SQL.Key.prototype.setName = function(n) {
this.name = n;
}
SQL.Key.prototype.getName = function() {
return this.name;
}
SQL.Key.prototype.setType = function(t) {
if (!t) { return; }
this.type = t;
for (var i=0;i<this.rows.length;i++) { this.rows[i].redraw(); }
}
SQL.Key.prototype.getType = function() {
return this.type;
}
SQL.Key.prototype.addRow = function(r) {
if (r.owner != this.owner) { return; }
this.rows.push(r);
r.addKey(this);
}
SQL.Key.prototype.removeRow = function(r) {
var idx = this.rows.indexOf(r);
if (idx == -1) { return; }
r.removeKey(this);
this.rows.splice(idx,1);
}
SQL.Key.prototype.destroy = function() {
for (var i=0;i<this.rows.length;i++) {
this.rows[i].removeKey(this);
}
}
SQL.Key.prototype.getLabel = function() {
return this.name || this.type;
}
SQL.Key.prototype.toXML = function() {
var xml = "";
xml += '<key type="'+this.getType()+'" name="'+this.getName()+'">\n';
for (var i=0;i<this.rows.length;i++) {
var r = this.rows[i];
xml += '<part>'+r.getTitle()+'</part>\n';
}
xml += '</key>\n';
return xml;
}
SQL.Key.prototype.fromXML = function(node) {
this.setType(node.getAttribute("type"));
this.setName(node.getAttribute("name"));
var parts = node.getElementsByTagName("part");
for (var i=0;i<parts.length;i++) {
var name = parts[i].firstChild.nodeValue;
var row = this.owner.findNamedRow(name);
this.addRow(row);
}
}
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