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1
/****************************************************************************
2
* Multiple Assessment download
3
* @param form containing the neceassary input items
4
* @return true/false for form submission
5
*****************************************************************************/
6
function multipleAssessmentSearch(submitFormObj, fieldFormObj) {
7
	
8
	//alert("submitFormObj=" + submitFormObj);
9
	//harvest the metadata fields we want to include
10
	var metadataObjs = new Array();
11
	var index = 0;
12
	for (var i=0; i < fieldFormObj.length; i++) {
13
		var formElement = fieldFormObj.elements[i];
14
		var metadataObj = new Object();
15
		metadataObj.name = formElement.name;
16
		metadataObj.value = formElement.value;
17
		metadataObjs[index] = metadataObj;
18
		index++;
19
	}
20
	
21
	//TODO option for all questions vs. just one
22
	//var questionId = submitFormObj.questionId.value;
23
	//alert("questionId=" + questionId);
24
	
25
	var documentObjects = new Array();
26
	var index = 0;
27
	if (submitFormObj.docid.length > 1) {
28
		for (var i=0; i < submitFormObj.docid.length; i++) {
29
			if (submitFormObj.docid[i].value != "") {
30
				var documentObject = new Object();
31
				documentObject.docid = submitFormObj.docid[i].value;
32
				documentObject.demographicData = submitFormObj[documentObject.docid + "demographicData"].value;
33
				
34
				var questionIds = new Array();
35
				for (var z = 0; z < submitFormObj[documentObject.docid].length; z++) {
36
					questionIds[z] = submitFormObj[documentObject.docid][z].value;
37
				}
38
			
39
				documentObject.questionIds = questionIds;
40
				documentObjects[index] = documentObject;
41
				index++;
42
			}
43
		}
44
	}
45
	else {
46
		//alert("submitFormObj.docid=" + submitFormObj.docid);
47
		if (submitFormObj.docid.value != "") {
48
			var documentObject = new Object();
49
			documentObject.docid = submitFormObj.docid.value;
50
			documentObject.demographicData = submitFormObj[documentObject.docid + "demographicData"].value;
51
				
52
			var questionIds = new Array();
53
			if (submitFormObj[documentObject.docid].length > 1) {
54
				for (var z = 0; z < submitFormObj[documentObject.docid].length; z++) {
55
					questionIds[z] = submitFormObj[documentObject.docid][z].value;
56
				}
57
			}
58
			else {
59
				questionIds[0] = submitFormObj[documentObject.docid].value;
60
			}
61
			
62
			documentObject.questionIds = questionIds;
63
			documentObjects[0] = documentObject;
64
		}
65
	}
66
		
67
	var query = generateQuery(documentObjects, metadataObjs);
68
	
69
	submitFormObj.dataquery.value = query;
70
	
71
	return true;
72
		
73
}
74

    
75
/****************************************************************************
76
* Single Assessment download
77
* @param form containing the neceassary input items
78
* @return true/false for form submission
79
*****************************************************************************/
80
function assessmentSearch(submitFormObj) {
81

    
82
	//harvest the metadata fields we want to include
83
	var metadataObjs = new Array();
84
	var index = 0;
85
	for (var i=0; i < submitFormObj.length; i++) {
86
		var formElement = submitFormObj.elements[i];
87
		if (formElement.type == "checkbox" && formElement.checked) {
88
			//ignore certain other checkboxes, kind of a hack 
89
			if (formElement.name == "includeQuestions") {
90
				continue;
91
			}
92
			var metadataObj = new Object();
93
			metadataObj.name = formElement.name;
94
			metadataObj.value = formElement.value;
95
			metadataObjs[index] = metadataObj;
96
			index++;
97
		}
98
	}
99
	
100
	//var checkBox = document.getElementById("searchAll");
101
	var docId = submitFormObj.docid.value;
102
	//alert("docId=" + docId);
103
	
104
	//do we want question metadata?
105
	var includeQuestions = submitFormObj.includeQuestions.checked;
106
	var questionIds = new Array();
107
	questionIds[0] = "";
108
	
109
	if (includeQuestions) {
110
		if (submitFormObj.assessmentItemId.length > 1) {
111
			for (var i=0; i < submitFormObj.assessmentItemId.length; i++) {
112
				questionIds[i] = submitFormObj.assessmentItemId[i].value;
113
			}
114
		}
115
		else {
116
			questionIds[0] = submitFormObj.assessmentItemId.value;
117
		}
118
	}
119
	
120
	//set up the list of objects to pass to the query assembler, just one document
121
	var documentObjects = new Array();
122
	var documentObject = new Object();
123
	documentObject.docid = docId;
124
	documentObject.questionIds = questionIds;
125
	documentObjects[0] = documentObject;
126
	
127
	var query = generateQuery(documentObjects, metadataObjs);
128
	
129
	submitFormObj.dataquery.value = query;
130
	
131
	return true;
132
		
133
}
134

    
135
/****************************************************************************
136
* Save fields for the attribute maping
137
* @param formId containing the neceassary input items
138
* @return true/false for form submission
139
*****************************************************************************/
140
function saveFields(formId, metacatURL) {
141

    
142
	var submitFormObj = document.getElementById(formId);
143
	
144
	//send the request to clear
145
	var myRequest = new Ajax.Request(
146
	metacatURL,
147
	{	method: 'post',
148
		parameters: { 
149
			action: 'editcart', 
150
			operation: 'clearfields'},
151
		evalScripts: true, 
152
		//onSuccess: function(transport) {alert('success: ' + transport.status);},
153
		onFailure: function(transport) {alert('failure clearing fields');}
154
	 });
155
	
156
	//go through the check boxes and set the ones we want
157
	var count = 0;
158
	for (var i=0; i < submitFormObj.length; i++) {
159
		var formElement = submitFormObj.elements[i];
160
		if (formElement.type == "checkbox" && formElement.checked) {
161
			//ignore certain other checkboxes, kind of a hack, but it's javascript...
162
			if (formElement.name == "includeQuestions") {
163
				continue;
164
			}
165
			if (formElement.name == "docid") {
166
				continue;
167
			}
168
			
169
			//send the request
170
			var myRequest = new Ajax.Request(
171
			metacatURL,
172
			{	method: 'post',
173
				parameters: { 
174
					action: 'editcart', 
175
					operation: 'addfield', 
176
					field: formElement.name, 
177
					path: formElement.value},
178
				evalScripts: true, 
179
				onSuccess: function(transport) {
180
					//alert('Selections saved: ' + operation); 
181
					//refresh after the save
182
					if (document.getElementById("ajaxCartResults")) {
183
						window.location.reload();
184
					}
185
					else {
186
						window.document.getElementById("iframeheaderclass").src=window.document.getElementById("iframeheaderclass").src;
187
					}
188
				}, 
189
				onFailure: function(transport) {alert('failure saving field: ' + formElement.name);}
190
			 });
191
		 	count++;
192
		}
193
	}
194
	
195
	//window.document.getElementById("iframeheaderclass").src = window.document.getElementById("iframeheaderclass").src;
196
	
197
	//alert(count + ' Field selections saved.'); 
198
	
199
	return true;
200
		
201
}
202

    
203
/****************************************************************************
204
* Query Generation function
205
* @param docObjs is an Array of Objects with "docid" (String) and "questionIds" (Array) properties
206
* @param metadataObjs is an Array of Objects with "name" and "value" properties (both String)
207
* @return generated query string
208
*****************************************************************************/
209
function generateQuery(docObjs, metadataObjs) {
210
	//alert("calling method");
211
	
212
	//construct the assessment metadata attribute selection snippet
213
	var metadataAttributes = "";
214
	var index = 0;
215
	for (var j=0; j < metadataObjs.length; j++) {
216
		var metadataObj = metadataObjs[j];
217
		
218
		metadataAttributes += "<attribute index=\"";
219
		metadataAttributes += index;
220
		metadataAttributes += "\">";
221
		
222
		metadataAttributes += "<pathexpr label=\"";
223
		metadataAttributes += metadataObj.name;
224
		metadataAttributes += "\">";
225
		metadataAttributes += metadataObj.value;
226
		metadataAttributes += "</pathexpr>";
227
		
228
		metadataAttributes += "</attribute>";
229
		
230
		index++;
231
	}//metadataObjs loop
232
	
233
	
234
	//construct the begining of the query
235
	var tempQuery = 
236
        "<?xml version=\"1.0\"?>"
237
        + "<dataquery>"
238
			+ "<union>";
239
			
240
	for (var i=0; i < docObjs.length; i++) {
241

    
242
		var docId = docObjs[i].docid;
243
		var containsDemographicData = docObjs[i].demographicData;
244
		//alert("containsDemographicData=" + containsDemographicData);
245
		
246
		//get the question ids for this question
247
		var questionIds = docObjs[i].questionIds;
248
	
249
		//alert("questionIds=" + questionIds);
250
		
251
		//assemble the assessment metadata
252
		var metadataAttributeSelection = "";
253
		if (metadataAttributes.length > 0) {
254
			metadataAttributeSelection =
255
				"<datapackage id=\"" + docId + "\">"
256
					+ "<entity id=\"" + docId + "\">"
257
						+ metadataAttributes
258
					+ "</entity>"
259
				+ "</datapackage>";
260
		}
261
				
262
		//loop for each question item
263
		for (var k=0; k < questionIds.length; k++) {
264
			var questionId = questionIds[k];
265
		
266
			tempQuery +=
267
			"<query>"
268
			+ "<selection>";
269
			
270
			//select the data
271
			tempQuery +=
272
				"<datapackage id=\"" + docId + "\">"
273
					+ "<entity index=\"0\">"
274
						+ "<attribute index=\"0\"/>"
275
						+ "<attribute index=\"1\"/>"
276
						//DO NOT omit student id attribute - used for transpose
277
						+ "<attribute index=\"2\"/>"
278
						+ "<attribute index=\"3\"/>"
279
						+ "<attribute index=\"4\"/>"
280
					+ "</entity>"
281
				+ "</datapackage>";
282
				
283
			//select the demographic data
284
			if (containsDemographicData) {
285
				tempQuery +=
286
					"<datapackage id=\"" + docId + "\">"
287
						+ "<entity index=\"1\">"
288
							//omit student id attribute
289
							+ "<attribute index=\"1\"/>"
290
							+ "<attribute index=\"2\"/>"
291
							+ "<attribute index=\"3\"/>"
292
						+ "</entity>"
293
					+ "</datapackage>";	
294
			}
295
			else {
296
				tempQuery +=
297
					"<staticItem name=\"demographic_1\" value=\"\" />"
298
					+ "<staticItem name=\"demographic_2\" value=\"\" />"
299
					+ "<staticItem name=\"demographic_3\" value=\"\" />";
300
			}
301
				
302
			//select the metadata
303
			tempQuery += metadataAttributeSelection;
304
	
305
			//select the question metadata						
306
			if (questionId.length > 0) {
307
				tempQuery +=
308
				"<datapackage id=\"" + questionId + "\">"
309
					+ "<entity id=\"" + questionId + "\">"
310
						+ "<attribute index=\"0\">"
311
							+ "<pathexpr label=\"qId\">//assessment/section/item/@ident</pathexpr>"
312
						+ "</attribute>"
313
						+ "<attribute index=\"1\">"
314
							+ "<pathexpr label=\"qTitle\">//assessment/section/item/@title</pathexpr>"
315
						+ "</attribute>"
316
						+ "<attribute index=\"2\">"
317
							+ "<pathexpr label=\"qLabel\">//assessment/section/item/presentation/@label</pathexpr>"
318
						+ "</attribute>"
319
					+ "</entity>"
320
				+ "</datapackage>";
321
			}
322
				
323
			tempQuery += "</selection>";
324
			
325
			//join to the question "table"
326
			if (questionId.length > 0) {
327
				tempQuery +=
328
					"<where>"
329
						+ "<condition type=\"join\">"
330
							+ "<left>"
331
								+ "<datapackage id=\"" + docId + "\">"
332
									+ "<entity index=\"0\">"
333
										+ "<attribute index=\"1\"/>"
334
									+ "</entity>"
335
								+ "</datapackage>"
336
							+ "</left>"
337
							+ "<operator>=</operator>"
338
							+ "<right>"
339
								+ "<datapackage id=\"" + questionId + "\">"
340
									+ "<entity id=\"" + questionId + "\">"
341
										+ "<attribute index=\"0\">"
342
											+ "<pathexpr label=\"qId\">//assessment/section/item/@ident</pathexpr>"
343
										+ "</attribute>"
344
									+ "</entity>"
345
								+ "</datapackage>"
346
							+ "</right>"
347
						+ "</condition>"
348
					+ "</where>";
349
			}
350
			
351
			tempQuery += "</query>";
352
		
353
		} // for questionId loop
354
		
355
	
356
	} //for docObjs loop
357
				 
358
	tempQuery +=
359
		 "</union>"	
360
		 + "</dataquery>";
361
	
362
	//alert(tempQuery);
363
             
364
    return tempQuery;
365
}
366

    
367
/**
368
*	@param searchTerms - and object (hashtable) with, pay attention now:
369
	keys are search values
370
*   values are pathexprs
371
**/
372
function generateSearchString(searchTerms, operator, searchAssessments, searchAssessmentItems) {
373
	var queryString = 
374
		"<pathquery version=\"1.2\">"
375
			+"<querytitle>Web-Search</querytitle>";
376
		
377
	/** assessments **/
378
	if (searchAssessments) {
379
	
380
		queryString +=
381
			"<returndoctype>edml://ecoinformatics.org/edml</returndoctype>"
382
			
383
			//assessment fields
384
               +"<returnfield>assessment/duration</returnfield>"
385
               +"<returnfield>assessment/title</returnfield>"
386
               +"<returnfield>assessment/@id</returnfield>"
387
               +"<returnfield>dataset/dataTable/entityName</returnfield>"
388
               +"<returnfield>lom/general/title/string</returnfield>"
389
               +"<returnfield>lom/general/keyword/string</returnfield>"
390
               +"<returnfield>individualName/surName</returnfield>"
391
               +"<returnfield>organizationName</returnfield>"
392
               
393
               +"<returnfield>assessmentItems/assessmentItem/assessmentItemId</returnfield>";
394
               
395
	}
396
						
397
	/** questions **/
398
	if (searchAssessmentItems) {
399
		queryString +=
400
			"<returndoctype>http://www.imsglobal.org/xsd/ims_qtiasiv1p2</returndoctype>"
401
			
402
			//question (qti) fields
403
			+"<returnfield>item/@title</returnfield>"
404
			+"<returnfield>item/@ident</returnfield>"
405
               +"<returnfield>qtimetadata/qtimetadatafield/fieldlabel</returnfield>"
406
               +"<returnfield>qtimetadata/qtimetadatafield/fieldentry</returnfield>"
407
			//classification
408
			+"<returnfield>fieldlabel</returnfield>"
409
			+"<returnfield>fieldentry</returnfield>"
410
			+"<returnfield>objectives/material/mattext</returnfield>"
411
			//question content
412
			+"<returnfield>presentation/flow/response_lid/render_choice/material/mattext</returnfield>"
413
			+"<returnfield>response_label/@ident</returnfield>"
414
			+"<returnfield>response_label/material/mattext</returnfield>";
415
	}		
416
    
417
    queryString +=
418
    	"<querygroup operator=\"" + operator + "\">";
419
                         
420
    for (var i in searchTerms) {
421
    	var key = i;
422
    	var value = searchTerms[i];
423
    	//only if we have a value  
424
    	if (value.length > 0) {                   
425
			queryString +=
426
				"<queryterm searchmode=\"contains\" casesensitive=\"false\">";
427
				if (key != "anyValue") {
428
					queryString += "<pathexpr>" + key + "</pathexpr>";
429
				}	
430
		      	queryString += "<value>" + value + "</value>";
431
		    queryString +="</queryterm>";
432
		}
433
    }
434
    
435
	queryString +=
436
		"</querygroup>"
437
	+"</pathquery>";
438
	
439
	return queryString;
440
				
441
}
442

    
443

    
444
function generateAssessmentSearchString(assessmentItemId) {
445
	var query = 
446
		"<pathquery version='1.2'>"
447
		     +"<querytitle>Containing-Assessment-Search</querytitle>"
448
		     
449
		     +"<returndoctype>edml://ecoinformatics.org/edml</returndoctype>"
450
		                           
451
                      +"<returnfield>assessment/title</returnfield>"
452
                      +"<returnfield>assessment/@id</returnfield>"
453
                      +"<returnfield>assessment/duration</returnfield>"
454
                      +"<returnfield>dataset/dataTable/entityName</returnfield>"
455
                      +"<returnfield>lom/general/title/string</returnfield>"
456
                      +"<returnfield>lom/general/keyword/string</returnfield>"
457
                      +"<returnfield>individualName/surName</returnfield>"
458
                      +"<returnfield>organizationName</returnfield>"
459
                      
460
                      +"<returnfield>assessmentItems/assessmentItem/assessmentItemId</returnfield>";
461
                      
462
		    if (assessmentItemId.length > 0) {
463
			    query += "<querygroup operator='UNION'>";
464
			    
465
			    //add the assessmentId if included
466
			    query +=
467
			     		"<queryterm searchmode='contains' casesensitive='false'>"
468
			                  +"<value>"
469
			                  + assessmentItemId
470
			                  +"</value>"
471
			                  +"<pathexpr>assessmentItemId</pathexpr>"
472
			          +"</queryterm>";
473
				
474
			    //close the query group      
475
			     query +=
476
			     "</querygroup>";
477
			}
478
			     
479
		query += "</pathquery>";
480
		
481
	return query;	
482
}
483

    
484
function generateAssessmentListString(assessmentIds) {
485
	var query = 
486
		"<pathquery version='1.2'>"
487
		     +"<querytitle>Assessment-List</querytitle>"
488
		     
489
		     +"<returndoctype>edml://ecoinformatics.org/edml</returndoctype>"
490
		                           
491
                      +"<returnfield>assessment/title</returnfield>"
492
                      +"<returnfield>assessment/@id</returnfield>"
493
                      +"<returnfield>assessment/duration</returnfield>"
494
           			  +"<returnfield>dataset/dataTable/entityName</returnfield>"
495
                      +"<returnfield>lom/general/title/string</returnfield>"
496
                      +"<returnfield>lom/general/keyword/string</returnfield>"
497
                      +"<returnfield>individualName/surName</returnfield>"
498
                      +"<returnfield>organizationName</returnfield>"
499
                      
500
                      +"<returnfield>assessmentItems/assessmentItem/assessmentItemId</returnfield>";
501
                      
502
		    if (assessmentIds.length > 0) {
503
			    query += "<querygroup operator='UNION'>";
504
			    
505
			    //add the assessmentId if included
506
			    for (var i=0; i < assessmentIds.length; i++) {
507
				    query +=
508
				     		"<queryterm searchmode='equals' casesensitive='false'>"
509
				                  +"<value>"
510
				                  + assessmentIds[i]
511
				                  +"</value>"
512
				                  +"<pathexpr>@packageId</pathexpr>"
513
				          +"</queryterm>";
514
				}
515
			    //close the query group      
516
			     query +=
517
			     "</querygroup>";
518
			}
519
			     
520
		query += "</pathquery>";
521
		
522
	return query;	
523
}
524

    
525
function callAjax(metacatURL, myQuery, qfmt, divId) {
526
														
527
	//alert("calling ajax: " + metacatURL);
528
	//alert("myQuery: " + myQuery);
529
	
530
	//var myRequest = new Ajax.Request(
531
	var myUpdate = new Ajax.Updater(
532
		divId,
533
		metacatURL,
534
		{	method: 'post',
535
			parameters: { action: 'squery', qformat: qfmt, query: myQuery},
536
			evalScripts: true, 
537
			//onSuccess: function(transport) {alert('success: ' + transport.status);},
538
			onFailure: function(transport) {alert('failure making ajax call');}
539
		 });
540
		 
541
	 //alert("done calling ajax");
542
}
543
function getIframeDocument(iframeId) {
544
	//look up the document
545
	var iframe = window.document.getElementById(iframeId);
546
	var doc = null;
547
	if (iframe.contentDocument) {
548
		doc = iframe.contentDocument;
549
	}
550
	else {
551
		doc = iframe.contentWindow.document;
552
	}
553
	return doc;
554
}
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