Fix typo in the property call

[cql-js-moved-to-github.git] / cql.js

diff --git a/cql.js b/cql.js
index 3e4f6d1..1f9b126 100644 (file)
--- a/cql.js
+++ b/cql.js
@@ -12,6 +12,10 @@ var CQLModifier = function () {
 }
 
 CQLModifier.prototype = {
+    toString: function () {
+      return this.name + this.relation + this.value;
+    },
+
     toXCQL: function (n) {
         var s = indent(n+1) + "<modifier>\n";
         s = s + indent(n+2) + "<name>" + this.name + "</name>\n";
@@ -23,8 +27,17 @@ CQLModifier.prototype = {
                 + "<value>" + this.value +"</value>\n";
         s = s + indent(n+1) + "</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) {
@@ -37,6 +50,14 @@ var CQLSearchClause = function (field, fielduri, relation, relationuri,
 }
 
 CQLSearchClause.prototype = {
+    toString: function () {
+      return (this.field ? this.field + ' ' : '') + 
+        (this.relation ? this.relation : '') +
+        (this.modifiers.length > 0 ? '/' + this.modifiers.join('/') : '') +
+        (this.relation || this.modifiers.length ? ' ' : '') +
+        '"' + this.term + '"';
+    },
+
     toXCQL: function (n) {
         var s = indent(n) + "<searchClause>\n";
         if (this.fielduri.length > 0)
@@ -65,7 +86,50 @@ CQLSearchClause.prototype = {
         s = s + indent(n+1) + "<term>" + this.term + "</term>\n";
         s = s + indent(n) + "</searchClause>\n";
         return s;
+    },
+
+    toFQ: function () {
+        var s = '{ "term": "'+this.term+'"';
+        if (this.field.length > 0 && this.field != 'cql.serverChoice')
+          s+= ', "field": "'+this.field+'"';
+        if (this.relation.length > 0 && this.relation != '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 += ' }';
+        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() {
@@ -76,6 +140,12 @@ var CQLBoolean = function() {
 }
 
 CQLBoolean.prototype = {
+    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) {
         var s = indent(n) + "<triple>\n";
         s = s + indent(n+1) + "<boolean>\n" +
@@ -94,7 +164,19 @@ CQLBoolean.prototype = {
             this.right.toXCQL(n+2) + indent(n+1) + "</rightOperand>\n";
         s = s + indent(n) + "</triple>\n";
         return s;
+    },
+
+    toFQ: function () {
+      var s = ' { "op": "'+this.op+'"';
+      //proximity modifiers
+      for (var i = 0; i < this.modifiers.length; i++)
+        s += ', ' + this.modifiers[i].toFQ();
+      s += ', "s1": '+this.left.toFQ();
+      s += ', "s2": '+this.right.toFQ();
+      s += ' }'
+      return s;
     }
+
 }
 // CQLParser
 var CQLParser = function () {
@@ -121,9 +203,69 @@ CQLParser.prototype = {
         if (this.look != "")
             throw new Error("EOF expected");
     },
+    parseFromFQ: function (query) {
+       if (!query)
+          throw new Error("The query to be parsed cannot be empty");
+       if (typeof query == 'string')
+         query = JSON.parse(query);
+       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.field = fq.hasOwnProperty('field') 
+            ? fq.field : 'cql.serverChoice';
+          node.relation = fq.hasOwnProperty('relation')
+            ? node._remapRelation(fq.relation) : '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 () {
         return this.tree.toXCQL();
     },
+    toFQ: function () {
+        return this.tree.toFQ();
+    },
+    toString: function () {
+        return this.tree.toString();
+    },
     _parseQuery: function(field, relation, modifiers) {
         var left = this._parseSearchClause(field, relation, modifiers);
         while (this.look == "s" && (