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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
						//omit student id attribute
277
						+ "<attribute index=\"3\"/>"
278
						+ "<attribute index=\"4\"/>"
279
					+ "</entity>"
280
				+ "</datapackage>";
281
				
282
			//select the demographic data
283
			if (containsDemographicData) {
284
				tempQuery +=
285
					"<datapackage id=\"" + docId + "\">"
286
						+ "<entity index=\"1\">"
287
							//omit student id attribute
288
							+ "<attribute index=\"1\"/>"
289
							+ "<attribute index=\"2\"/>"
290
							+ "<attribute index=\"3\"/>"
291
						+ "</entity>"
292
					+ "</datapackage>";	
293
			}
294
			else {
295
				tempQuery +=
296
					"<staticItem name=\"demographic_1\" value=\"\" />"
297
					+ "<staticItem name=\"demographic_2\" value=\"\" />"
298
					+ "<staticItem name=\"demographic_3\" value=\"\" />";
299
			}
300
				
301
			//select the metadata
302
			tempQuery += metadataAttributeSelection;
303
	
304
			//select the question metadata						
305
			if (questionId.length > 0) {
306
				tempQuery +=
307
				"<datapackage id=\"" + questionId + "\">"
308
					+ "<entity id=\"" + questionId + "\">"
309
						+ "<attribute index=\"0\">"
310
							+ "<pathexpr label=\"qId\">//assessment/section/item/@ident</pathexpr>"
311
						+ "</attribute>"
312
						+ "<attribute index=\"1\">"
313
							+ "<pathexpr label=\"qTitle\">//assessment/section/item/@title</pathexpr>"
314
						+ "</attribute>"
315
						+ "<attribute index=\"2\">"
316
							+ "<pathexpr label=\"qLabel\">//assessment/section/item/presentation/@label</pathexpr>"
317
						+ "</attribute>"
318
					+ "</entity>"
319
				+ "</datapackage>";
320
			}
321
				
322
			tempQuery += "</selection>";
323
			
324
			//join to the question "table"
325
			if (questionId.length > 0) {
326
				tempQuery +=
327
					"<where>"
328
						+ "<condition type=\"join\">"
329
							+ "<left>"
330
								+ "<datapackage id=\"" + docId + "\">"
331
									+ "<entity index=\"0\">"
332
										+ "<attribute index=\"1\"/>"
333
									+ "</entity>"
334
								+ "</datapackage>"
335
							+ "</left>"
336
							+ "<operator>=</operator>"
337
							+ "<right>"
338
								+ "<datapackage id=\"" + questionId + "\">"
339
									+ "<entity id=\"" + questionId + "\">"
340
										+ "<attribute index=\"0\">"
341
											+ "<pathexpr label=\"qId\">//assessment/section/item/@ident</pathexpr>"
342
										+ "</attribute>"
343
									+ "</entity>"
344
								+ "</datapackage>"
345
							+ "</right>"
346
						+ "</condition>"
347
					+ "</where>";
348
			}
349
			
350
			tempQuery += "</query>";
351
		
352
		} // for questionId loop
353
		
354
	
355
	} //for docObjs loop
356
				 
357
	tempQuery +=
358
		 "</union>"	
359
		 + "</dataquery>";
360
	
361
	//alert(tempQuery);
362
             
363
    return tempQuery;
364
}
365

    
366
/**
367
*	@param searchTerms - and object (hashtable) with, pay attention now:
368
	keys are search values
369
*   values are pathexprs
370
**/
371
function generateSearchString(searchTerms, operator, searchAssessments, searchAssessmentItems) {
372
	var queryString = 
373
		"<pathquery version=\"1.2\">"
374
			+"<querytitle>Web-Search</querytitle>";
375
		
376
	/** assessments **/
377
	if (searchAssessments) {
378
	
379
		queryString +=
380
			"<returndoctype>edml://ecoinformatics.org/edml</returndoctype>"
381
			
382
			//assessment fields
383
               +"<returnfield>assessment/duration</returnfield>"
384
               +"<returnfield>assessment/title</returnfield>"
385
               +"<returnfield>assessment/@id</returnfield>"
386
               +"<returnfield>dataset/dataTable/entityName</returnfield>"
387
               +"<returnfield>lom/general/title/string</returnfield>"
388
               +"<returnfield>lom/general/keyword/string</returnfield>"
389
               +"<returnfield>individualName/surName</returnfield>"
390
               +"<returnfield>organizationName</returnfield>"
391
               
392
               +"<returnfield>assessmentItems/assessmentItem/assessmentItemId</returnfield>";
393
               
394
	}
395
						
396
	/** questions **/
397
	if (searchAssessmentItems) {
398
		queryString +=
399
			"<returndoctype>http://www.imsglobal.org/xsd/ims_qtiasiv1p2</returndoctype>"
400
			
401
			//question (qti) fields
402
			+"<returnfield>item/@title</returnfield>"
403
			+"<returnfield>item/@ident</returnfield>"
404
               +"<returnfield>qtimetadata/qtimetadatafield/fieldlabel</returnfield>"
405
               +"<returnfield>qtimetadata/qtimetadatafield/fieldentry</returnfield>"
406
			//classification
407
			+"<returnfield>fieldlabel</returnfield>"
408
			+"<returnfield>fieldentry</returnfield>"
409
			+"<returnfield>objectives/material/mattext</returnfield>"
410
			//question content
411
			+"<returnfield>presentation/flow/material/mattext</returnfield>"
412
			+"<returnfield>response_label/@ident</returnfield>"
413
			+"<returnfield>response_label/material/mattext</returnfield>";
414
	}		
415
    
416
    queryString +=
417
    	"<querygroup operator=\"" + operator + "\">";
418
                         
419
    for (var i in searchTerms) {
420
    	var key = i;
421
    	var value = searchTerms[i];
422
    	//only if we have a value  
423
    	if (value.length > 0) {                   
424
			queryString +=
425
				"<queryterm searchmode=\"contains\" casesensitive=\"false\">";
426
				if (key != "anyValue") {
427
					queryString += "<pathexpr>" + key + "</pathexpr>";
428
				}	
429
		      	queryString += "<value>" + value + "</value>";
430
		    queryString +="</queryterm>";
431
		}
432
    }
433
    
434
	queryString +=
435
		"</querygroup>"
436
	+"</pathquery>";
437
	
438
	return queryString;
439
				
440
}
441

    
442

    
443
function generateAssessmentSearchString(assessmentItemId) {
444
	var query = 
445
		"<pathquery version='1.2'>"
446
		     +"<querytitle>Containing-Assessment-Search</querytitle>"
447
		     
448
		     +"<returndoctype>edml://ecoinformatics.org/edml</returndoctype>"
449
		                           
450
                      +"<returnfield>assessment/title</returnfield>"
451
                      +"<returnfield>assessment/@id</returnfield>"
452
                      +"<returnfield>assessment/duration</returnfield>"
453
                      +"<returnfield>dataset/dataTable/entityName</returnfield>"
454
                      +"<returnfield>lom/general/title/string</returnfield>"
455
                      +"<returnfield>lom/general/keyword/string</returnfield>"
456
                      +"<returnfield>individualName/surName</returnfield>"
457
                      +"<returnfield>organizationName</returnfield>"
458
                      
459
                      +"<returnfield>assessmentItems/assessmentItem/assessmentItemId</returnfield>";
460
                      
461
		    if (assessmentItemId.length > 0) {
462
			    query += "<querygroup operator='UNION'>";
463
			    
464
			    //add the assessmentId if included
465
			    query +=
466
			     		"<queryterm searchmode='contains' casesensitive='false'>"
467
			                  +"<value>"
468
			                  + assessmentItemId
469
			                  +"</value>"
470
			                  +"<pathexpr>assessmentItemId</pathexpr>"
471
			          +"</queryterm>";
472
				
473
			    //close the query group      
474
			     query +=
475
			     "</querygroup>";
476
			}
477
			     
478
		query += "</pathquery>";
479
		
480
	return query;	
481
}
482

    
483
function generateAssessmentListString(assessmentIds) {
484
	var query = 
485
		"<pathquery version='1.2'>"
486
		     +"<querytitle>Assessment-List</querytitle>"
487
		     
488
		     +"<returndoctype>edml://ecoinformatics.org/edml</returndoctype>"
489
		                           
490
                      +"<returnfield>assessment/title</returnfield>"
491
                      +"<returnfield>assessment/@id</returnfield>"
492
                      +"<returnfield>assessment/duration</returnfield>"
493
           			  +"<returnfield>dataset/dataTable/entityName</returnfield>"
494
                      +"<returnfield>lom/general/title/string</returnfield>"
495
                      +"<returnfield>lom/general/keyword/string</returnfield>"
496
                      +"<returnfield>individualName/surName</returnfield>"
497
                      +"<returnfield>organizationName</returnfield>"
498
                      
499
                      +"<returnfield>assessmentItems/assessmentItem/assessmentItemId</returnfield>";
500
                      
501
		    if (assessmentIds.length > 0) {
502
			    query += "<querygroup operator='UNION'>";
503
			    
504
			    //add the assessmentId if included
505
			    for (var i=0; i < assessmentIds.length; i++) {
506
				    query +=
507
				     		"<queryterm searchmode='equals' casesensitive='false'>"
508
				                  +"<value>"
509
				                  + assessmentIds[i]
510
				                  +"</value>"
511
				                  +"<pathexpr>@packageId</pathexpr>"
512
				          +"</queryterm>";
513
				}
514
			    //close the query group      
515
			     query +=
516
			     "</querygroup>";
517
			}
518
			     
519
		query += "</pathquery>";
520
		
521
	return query;	
522
}
523

    
524
function callAjax(metacatURL, myQuery, qfmt, divId) {
525
														
526
	//alert("calling ajax: " + metacatURL);
527
	//alert("myQuery: " + myQuery);
528
	
529
	//var myRequest = new Ajax.Request(
530
	var myUpdate = new Ajax.Updater(
531
		divId,
532
		metacatURL,
533
		{	method: 'post',
534
			parameters: { action: 'squery', qformat: qfmt, query: myQuery},
535
			evalScripts: true, 
536
			//onSuccess: function(transport) {alert('success: ' + transport.status);},
537
			onFailure: function(transport) {alert('failure making ajax call');}
538
		 });
539
		 
540
	 //alert("done calling ajax");
541
}
542
function getIframeDocument(iframeId) {
543
	//look up the document
544
	var iframe = window.document.getElementById(iframeId);
545
	var doc = null;
546
	if (iframe.contentDocument) {
547
		doc = iframe.contentDocument;
548
	}
549
	else {
550
		doc = iframe.contentWindow.document;
551
	}
552
	return doc;
553
}
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