-function indent(n) {
+var EXPORTED_SYMBOLS = ["CQLParser"];
+
+var DEFAULT_SERVER_CHOICE_FIELD = 'cql.serverChoice';
+var DEFAULT_SERVER_CHOICE_RELATION = 'scr';
+
+function indent(n, c) {
var s = "";
for (var i = 0; i < n; i++)
- s = s + " ";
+ s = s + c;
return s;
}
-
// CQLModifier
var CQLModifier = function () {
this.name = null;
}
CQLModifier.prototype = {
- toXCQL: function (n) {
- var s = indent(n+1) + "<modifier>\n";
- s = s + indent(n+2) + "<name>" + this.name + "</name>\n";
+ toString: function () {
+ return this.name + this.relation + this.value;
+ },
+
+ toXCQL: function (n, c) {
+ var s = indent(n+1, c) + "<modifier>\n";
+ s = s + indent(n+2, c) + "<name>" + this.name + "</name>\n";
if (this.relation != null)
- s = s + indent(n+2)
+ s = s + indent(n+2, c)
+ "<relation>" + this.relation + "</relation>\n";
if (this.value != null)
- s = s + indent(n+2)
+ s = s + indent(n+2, c)
+ "<value>" + this.value +"</value>\n";
- s = s + indent(n+1) + "</modifier>\n";
+ s = s + indent(n+1, c) + "</modifier>\n";
+ return s;
+ },
+
+ toFQ: function () {
+ //we ignore modifier relation symbol, for value-less modifiers
+ //we assume 'true'
+ var value = this.value.length > 0 ? this.value : "true";
+ var s = '"'+this.name+'": "'+value+'"';
return s;
}
}
+
// CQLSearchClause
var CQLSearchClause = function (field, fielduri, relation, relationuri,
- modifiers, term) {
+ modifiers, term, scf, scr) {
this.field = field;
this.fielduri = fielduri;
this.relation = relation;
this.relationuri = relationuri;
this.modifiers = modifiers;
this.term = term;
+ this.scf = scf || DEFAULT_SERVER_CHOICE_FIELD;
+ this.scr = scr || DEFAULT_SERVER_CHOICE_RELATION;
}
CQLSearchClause.prototype = {
- toXCQL: function (n) {
- var s = indent(n) + "<searchClause>\n";
+ toString: function () {
+ var field = this.field;
+ var relation = this.relation;
+ if (field == this.scf && relation == this.scr) {
+ //avoid redundant field/relation
+ field = null;
+ relation = null;
+ }
+ return (field ? field + ' ' : '') +
+ (relation ? relation : '') +
+ (this.modifiers.length > 0 ? '/' + this.modifiers.join('/') : '') +
+ (relation || this.modifiers.length ? ' ' : '') +
+ '"' + this.term + '"';
+ },
+
+ toXCQL: function (n, c) {
+ var s = indent(n, c) + "<searchClause>\n";
if (this.fielduri.length > 0)
{
- s = s + indent(n+1) + "<prefixes>\n" +
- indent(n+2) + "<prefix>\n" +
- indent(n+3) + "<identifier>" + this.fielduri +
+ s = s + indent(n+1, c) + "<prefixes>\n" +
+ indent(n+2, c) + "<prefix>\n" +
+ indent(n+3, c) + "<identifier>" + this.fielduri +
"</identifier>\n" +
- indent(n+2) + "</prefix>\n" +
- indent(n+1) + "</prefixes>\n";
+ indent(n+2, c) + "</prefix>\n" +
+ indent(n+1, c) + "</prefixes>\n";
}
- s = s + indent(n+1) + "<index>" + this.field + "</index>\n";
- s = s + indent(n+1) + "<relation>\n";
+ s = s + indent(n+1, c) + "<index>" + this.field + "</index>\n";
+ s = s + indent(n+1, c) + "<relation>\n";
if (this.relationuri.length > 0) {
- s = s + indent(n+2) +
+ s = s + indent(n+2, c) +
"<identifier>" + this.relationuri + "</identifier>\n";
}
- s = s + indent(n+2) + "<value>" + this.relation + "</value>\n";
+ s = s + indent(n+2, c) + "<value>" + this.relation + "</value>\n";
if (this.modifiers.length > 0) {
- s = s + indent(n+2) + "<modifiers>\n";
+ s = s + indent(n+2, c) + "<modifiers>\n";
for (var i = 0; i < this.modifiers.length; i++)
- s = s + this.modifiers[i].toXCQL(n+2);
- s = s + indent(n+2) + "</modifiers>\n";
+ s = s + this.modifiers[i].toXCQL(n+2, c);
+ s = s + indent(n+2, c) + "</modifiers>\n";
+ }
+ s = s + indent(n+1, c) + "</relation>\n";
+ s = s + indent(n+1, c) + "<term>" + this.term + "</term>\n";
+ s = s + indent(n, c) + "</searchClause>\n";
+ return s;
+ },
+
+ toFQ: function () {
+ var s = '{"term": "'+this.term+'"';
+ if (this.field.length > 0 && this.field != this.scf)
+ s+= ', "field": "'+this.field+'"';
+ if (this.relation.length > 0 && this.relation != this.scr)
+ s+= ', "relation": "'+this._mapRelation(this.relation)+'"';
+ for (var i = 0; i < this.modifiers.length; i++) {
+ //since modifiers are mapped to keys, ignore the reserved ones
+ if (this.modifiers[i].name == "term"
+ ||this.modifiers[i].name == "field"
+ ||this.modifiers[i].name == "relation")
+ continue;
+ s += ', ' + this.modifiers[i].toFQ();
}
- s = s + indent(n+1) + "</relation>\n";
- s = s + indent(n+1) + "<term>" + this.term + "</term>\n";
- s = s + indent(n) + "</searchClause>\n";
+ s += '}';
return s;
+ },
+
+ _mapRelation: function (rel) {
+ switch(rel) {
+ case "<" : return "lt";
+ case ">" : return "gt";
+ case "=" : return "eq";
+ case "<>" : return "ne";
+ case ">=" : return "ge";
+ case "<=" : return "le";
+ default: return rel;
+ }
+ },
+
+ _remapRelation: function (rel) {
+ switch(rel) {
+ case "lt" : return "<";
+ case "gt" : return ">";
+ case "eq" : return "=";
+ case "ne" : return "<>";
+ case "ge" : return ">=";
+ case "le" : return "<=";
+ default: return rel;
+ }
}
+
}
// CQLBoolean
var CQLBoolean = function() {
}
CQLBoolean.prototype = {
- toXCQL: function (n) {
- var s = indent(n) + "<triple>\n";
- s = s + indent(n+1) + "<boolean>\n" +
- indent(n+2) + "<value>" + this.op + "</value>\n";
+ toString: function () {
+ return (this.left.op ? '(' + this.left + ')' : this.left) + ' ' +
+ this.op.toUpperCase() +
+ (this.modifiers.length > 0 ? '/' + this.modifiers.join('/') : '') +
+ ' ' + (this.right.op ? '(' + this.right + ')' : this.right);;
+ },
+ toXCQL: function (n, c) {
+ var s = indent(n, c) + "<triple>\n";
+ s = s + indent(n+1, c) + "<boolean>\n" +
+ indent(n+2, c) + "<value>" + this.op + "</value>\n";
if (this.modifiers.length > 0) {
- s = s + indent(n+2) + "<modifiers>\n";
+ s = s + indent(n+2, c) + "<modifiers>\n";
for (var i = 0; i < this.modifiers.length; i++)
- s = s + this.modifiers[i].toXCQL(n+2);
- s = s + indent(n+2) + "</modifiers>\n";
+ s = s + this.modifiers[i].toXCQL(n+2, c);
+ s = s + indent(n+2, c) + "</modifiers>\n";
}
- s = s + indent(n+1) + "</boolean>\n";
- s = s + indent(n+1) + "<leftOperand>\n" +
- this.left.toXCQL(n+2) + indent(n+1) + "</leftOperand>\n";
+ s = s + indent(n+1, c) + "</boolean>\n";
+ s = s + indent(n+1, c) + "<leftOperand>\n" +
+ this.left.toXCQL(n+2, c) + indent(n+1, c) + "</leftOperand>\n";
- s = s + indent(n+1) + "<rightOperand>\n" +
- this.right.toXCQL(n+2) + indent(n+1) + "</rightOperand>\n";
- s = s + indent(n) + "</triple>\n";
+ s = s + indent(n+1, c) + "<rightOperand>\n" +
+ this.right.toXCQL(n+2, c) + indent(n+1, c) + "</rightOperand>\n";
+ s = s + indent(n, c) + "</triple>\n";
return s;
+ },
+
+ toFQ: function (n, c, nl) {
+ var s = '{"op": "'+this.op+'"';
+ //proximity modifiers
+ for (var i = 0; i < this.modifiers.length; i++)
+ s += ', ' + this.modifiers[i].toFQ();
+ s += ','+nl+indent(n, c)+' "s1": '+this.left.toFQ(n+1, c, nl);
+ s += ','+nl+indent(n, c)+' "s2": '+this.right.toFQ(n+1, c, nl);
+ var fill = n && c ? ' ' : '';
+ s += nl+indent(n-1, c)+fill+'}';
+ return s;
}
+
}
// CQLParser
var CQLParser = function () {
this.val = null;
this.prefixes = new Object();
this.tree = null;
+ this.scf = null;
+ this.scr = null;
}
CQLParser.prototype = {
- parse: function (query) {
+ parse: function (query, scf, scr) {
if (!query)
throw new Error("The query to be parsed cannot be empty");
-
+ this.scf = typeof scf != 'string'
+ ? DEFAULT_SERVER_CHOICE_FIELD : scf;
+ this.scr = typeof scr != 'string'
+ ? DEFAULT_SERVER_CHOICE_RELATION : scr;
this.qs = query;
this.ql = this.qs.length;
this.qi = 0;
this._move();
- this.tree = this._parseQuery("cql.serverChoice", "scr", new Array());
+ this.tree = this._parseQuery(this.scf, this.scr, new Array());
if (this.look != "")
throw new Error("EOF expected");
},
- toXCQL: function () {
- return this.tree.toXCQL();
+ parseFromFQ: function (query, scf, scr) {
+ if (!query)
+ throw new Error("The query to be parsed cannot be empty");
+ if (typeof query == 'string')
+ query = JSON.parse(query);
+ this.scf = typeof scf != 'string'
+ ? DEFAULT_SERVER_CHOICE_FIELD : scf;
+ this.scr = typeof scr != 'string'
+ ? DEFAULT_SERVER_CHOICE_RELATION : scr;
+ this.tree = this._parseFromFQ(query);
+ },
+ _parseFromFQ: function (fq) {
+ //op-node
+ if (fq.hasOwnProperty('op')
+ && fq.hasOwnProperty('s1')
+ && fq.hasOwnProperty('s2')) {
+ var node = new CQLBoolean();
+ node.op = fq.op;
+ node.left = this._parseFromFQ(fq.s1);
+ node.right = this._parseFromFQ(fq.s2);
+ //include all other members as modifiers
+ node.modifiers = [];
+ for (var key in fq) {
+ if (key == 'op' || key == 's1' || key == 's2')
+ continue;
+ var mod = new CQLModifier();
+ mod.name = key;
+ mod.relation = '=';
+ mod.value = fq[key];
+ node.modifiers.push(mod);
+ }
+ return node;
+ }
+ //search-clause node
+ if (fq.hasOwnProperty('term')) {
+ var node = new CQLSearchClause();
+ node.term = fq.term;
+ node.scf = this.scf;
+ node.scr = this.scr;
+ node.field = fq.hasOwnProperty('field')
+ ? fq.field : this.scf;
+ node.relation = fq.hasOwnProperty('relation')
+ ? node._remapRelation(fq.relation) : this.scr;
+ //include all other members as modifiers
+ node.relationuri = '';
+ node.fielduri = '';
+ node.modifiers = [];
+ for (var key in fq) {
+ if (key == 'term' || key == 'field' || key == 'relation')
+ continue;
+ var mod = new CQLModifier();
+ mod.name = key;
+ mod.relation = '=';
+ mod.value = fq[key];
+ node.modifiers.push(mod);
+ }
+ return node;
+ }
+ throw new Error('Unknow node type; '+JSON.stringify(fq));
+ },
+ toXCQL: function (c) {
+ c = typeof c == "undefined" ? ' ' : c;
+ return this.tree.toXCQL(0, c);
+ },
+ toFQ: function (c, nl) {
+ c = typeof c == "undefined" ? ' ' : c;
+ nl = typeof nl == "undefined" ? '\n' : c;
+ return this.tree.toFQ(0, c, nl);
+ },
+ toString: function () {
+ return this.tree.toString();
},
_parseQuery: function(field, relation, modifiers) {
var left = this._parseSearchClause(field, relation, modifiers);
relation,
reluri,
modifiers,
- first);
+ first,
+ this.scf,
+ this.scr);
return sc;
}
// prefixes
},
_move: function () {
+ //eat whitespace
while (this.qi < this.ql
&& this._strchr(" \t\r\n", this.qs.charAt(this.qi)))
this.qi++;
+ //eof
if (this.qi == this.ql) {
this.look = "";
return;
}
+ //current char
var c = this.qs.charAt(this.qi);
+ //separators
if (this._strchr("()/", c)) {
this.look = c;
this.qi++;
+ //comparitor
} else if (this._strchr("<>=", c)) {
this.look = c;
this.qi++;
+ //comparitors can repeat, could be if
while (this.qi < this.ql
&& this._strchr("<>=", this.qs.charAt(this.qi))) {
this.look = this.look + this.qs.charAt(this.qi);
this.qi++;
}
+ //quoted string
} else if (this._strchr("\"'", c)) {
this.look = "q";
+ //remember quote char
var mark = c;
this.qi++;
this.val = "";
- while (this.qi < this.ql
- && this.qs.charAt(this.qi) != mark) {
- if (this.qs.charAt(this.qi) == '\\'
- && this.qi < this.ql-1)
- this.qi++;
- this.val = this.val + this.qs.charAt(this.qi);
- this.qi++;
+ var escaped = false;
+ while (this.qi < this.ql) {
+ if (!escaped && this.qs.charAt(this.qi) == mark)
+ break;
+ if (!escaped && this.qs.charAt(this.qi) == '\\')
+ escaped = true;
+ else
+ escaped = false;
+ this.val += this.qs.charAt(this.qi);
+ this.qi++;
}
this.lval = this.val.toLowerCase();
if (this.qi < this.ql)
this.qi++;
+ else //unterminated
+ this.look = ""; //notify error
+ //unquoted string
} else {
this.look = "s";
this.val = "";
projects / cql-js-moved-to-github.git / blobdiff