|
1
|
/*
|
|
2
|
* ClientViewHelper.java
|
|
3
|
*
|
|
4
|
* Created on June 25, 2007, 9:57 AM
|
|
5
|
*
|
|
6
|
* To change this template, choose Tools | Template Manager
|
|
7
|
* and open the template in the editor.
|
|
8
|
*/
|
|
9
|
|
|
10
|
package edu.ucsb.nceas.metacat.clientview;
|
|
11
|
|
|
12
|
import com.oreilly.servlet.multipart.FilePart;
|
|
13
|
import com.oreilly.servlet.multipart.MultipartParser;
|
|
14
|
import com.oreilly.servlet.multipart.ParamPart;
|
|
15
|
import com.oreilly.servlet.multipart.Part;
|
|
16
|
import edu.ucsb.nceas.metacat.MetaCatUtil;
|
|
17
|
import edu.ucsb.nceas.metacat.client.InsufficientKarmaException;
|
|
18
|
import edu.ucsb.nceas.metacat.client.MetacatClient;
|
|
19
|
import edu.ucsb.nceas.metacat.client.MetacatException;
|
|
20
|
import edu.ucsb.nceas.metacat.client.MetacatFactory;
|
|
21
|
import edu.ucsb.nceas.metacat.client.MetacatInaccessibleException;
|
|
22
|
import edu.ucsb.nceas.utilities.XMLUtilities;
|
|
23
|
import java.io.BufferedReader;
|
|
24
|
import java.io.ByteArrayOutputStream;
|
|
25
|
import java.io.IOException;
|
|
26
|
import java.io.InputStream;
|
|
27
|
import java.io.InputStreamReader;
|
|
28
|
import java.io.Reader;
|
|
29
|
import java.io.StringReader;
|
|
30
|
import java.util.HashMap;
|
|
31
|
import java.util.Iterator;
|
|
32
|
import java.util.Properties;
|
|
33
|
import java.util.Stack;
|
|
34
|
import java.util.TreeMap;
|
|
35
|
import java.util.Vector;
|
|
36
|
import javax.servlet.http.HttpServletRequest;
|
|
37
|
import javax.servlet.http.HttpServletResponse;
|
|
38
|
import javax.servlet.http.HttpSession;
|
|
39
|
import javax.xml.xpath.XPath;
|
|
40
|
import javax.xml.xpath.XPathConstants;
|
|
41
|
import javax.xml.xpath.XPathExpressionException;
|
|
42
|
import javax.xml.xpath.XPathFactory;
|
|
43
|
import org.w3c.dom.DOMException;
|
|
44
|
import org.w3c.dom.Document;
|
|
45
|
import org.w3c.dom.Node;
|
|
46
|
import org.w3c.dom.NodeList;
|
|
47
|
import org.w3c.dom.Text;
|
|
48
|
|
|
49
|
/**
|
|
50
|
*
|
|
51
|
* @author barteau
|
|
52
|
*/
|
|
53
|
public class ClientViewHelper {
|
|
54
|
private XPath xpath = XPathFactory.newInstance().newXPath();
|
|
55
|
private HttpSession clientSession;
|
|
56
|
private ClientView clientViewBean = null;
|
|
57
|
private MetacatClient metacatClient = null;
|
|
58
|
private boolean loggedIn = false;
|
|
59
|
private Document metadataDoc = null;
|
|
60
|
private int sizeLimit;
|
|
61
|
private String contactName = "";
|
|
62
|
|
|
63
|
private static final String LDAP_TEMPLATE = "uid=%1s,o=%2s,dc=ecoinformatics,dc=org";
|
|
64
|
|
|
65
|
public static final String DOWNLOAD_ACTION = "Download";
|
|
66
|
|
|
67
|
public static final String PERMISSION_TYPE_ALLOW = "allow";
|
|
68
|
|
|
69
|
public static final String PERMISSION_TYPE_DISALLOW = "deny";
|
|
70
|
|
|
71
|
/**
|
|
72
|
* Creates a new instance of ClientViewHelper, using info in an HttpServletRequest
|
|
73
|
* for initializing.
|
|
74
|
* @param request HttpServletRequest, sent from the client browser.
|
|
75
|
* @throws edu.ucsb.nceas.metacat.client.MetacatInaccessibleException Thrown
|
|
76
|
*/
|
|
77
|
public ClientViewHelper(HttpServletRequest request) throws MetacatInaccessibleException {
|
|
78
|
String host, context;
|
|
79
|
|
|
80
|
clientSession = request.getSession();
|
|
81
|
host = request.getHeader("host");
|
|
82
|
context = request.getContextPath();
|
|
83
|
init(host, context);
|
|
84
|
}
|
|
85
|
|
|
86
|
/**
|
|
87
|
* Creates a new instance of ClientViewHelper, using parameter values
|
|
88
|
* for initializing. This constructor is plain java code so it's the portal of
|
|
89
|
* choice for JUnit testing.
|
|
90
|
* @param host The host with port (if needed), such as "localhost:8084".
|
|
91
|
* @param context The application root context.
|
|
92
|
* @param bean ClientView instance, with pre-populated values.
|
|
93
|
* @throws edu.ucsb.nceas.metacat.client.MetacatInaccessibleException thrown
|
|
94
|
*/
|
|
95
|
public ClientViewHelper(String host, String context, ClientView bean) throws MetacatInaccessibleException {
|
|
96
|
clientViewBean = bean;
|
|
97
|
init(host, context);
|
|
98
|
}
|
|
99
|
|
|
100
|
private void init(String host, String context) throws MetacatInaccessibleException {
|
|
101
|
String metacatPath = "http://%1s%2s/metacat";
|
|
102
|
String tmp;
|
|
103
|
|
|
104
|
tmp = metacatPath.replaceFirst("%1s", host);
|
|
105
|
metacatPath = tmp.replaceFirst("%2s", context);
|
|
106
|
metacatClient = (MetacatClient) MetacatFactory.createMetacatConnection(metacatPath);
|
|
107
|
sizeLimit = (new Integer(MetaCatUtil.getOption("datafilesizelimit"))).intValue();
|
|
108
|
}
|
|
109
|
|
|
110
|
/**
|
|
111
|
* Main web API method for handling various actions.
|
|
112
|
* @param request HttpServletRequest
|
|
113
|
* @param response HttpServletResponse
|
|
114
|
* @return String message
|
|
115
|
*/
|
|
116
|
public String clientRequest(HttpServletRequest request, HttpServletResponse response) {
|
|
117
|
String result = null, action, contentType;
|
|
118
|
MultipartParser multipartParser;
|
|
119
|
HashMap responseMap;
|
|
120
|
|
|
121
|
if (clientViewBean == null) {
|
|
122
|
clientViewBean = (ClientView) clientSession.getAttribute(ClientView.CLIENT_VIEW_BEAN);
|
|
123
|
|
|
124
|
if (clientViewBean == null) {
|
|
125
|
//make a new one and shove it in the session
|
|
126
|
clientViewBean = new ClientView();
|
|
127
|
clientSession.setAttribute(ClientView.CLIENT_VIEW_BEAN, clientViewBean);
|
|
128
|
}
|
|
129
|
}
|
|
130
|
|
|
131
|
if (clientViewBean != null) {
|
|
132
|
action = clientViewBean.getAction();
|
|
133
|
contentType = request.getContentType();
|
|
134
|
|
|
135
|
//*** BEGIN: manual bind params to bean (if we arrived here via the ClientViewHelper.jspx).
|
|
136
|
if (action == null || action.equals("")) {
|
|
137
|
if (contentType != null && contentType.indexOf("multipart/form-data") > -1) {
|
|
138
|
action = "Upload";
|
|
139
|
} else {
|
|
140
|
action = request.getParameter("action");
|
|
141
|
clientViewBean.setDocId(request.getParameter("docid"));
|
|
142
|
clientViewBean.setMetaFileDocId(request.getParameter("metadataDocId"));
|
|
143
|
clientViewBean.setQformat(request.getParameter("qformat"));
|
|
144
|
clientViewBean.setPublicAccess(request.getParameter("publicAccess") != null);
|
|
145
|
clientViewBean.setContentStandard(request.getParameter("contentStandard"));
|
|
146
|
}
|
|
147
|
clientViewBean.setAction(action);
|
|
148
|
}
|
|
149
|
//*** END: manual bind params to bean.
|
|
150
|
|
|
151
|
if (action != null) {
|
|
152
|
if (action.equals("Login")) {
|
|
153
|
responseMap = handleClientRequest(null);
|
|
154
|
//*** Now that the action has been processed, clear it.
|
|
155
|
clientViewBean.setAction("");
|
|
156
|
} else if (action.equals("Logout")) {
|
|
157
|
responseMap = handleClientRequest(null);
|
|
158
|
clientViewBean.setAction("");
|
|
159
|
} else if (action.equals("Upload")) {
|
|
160
|
try {
|
|
161
|
//*** Init the MultipartParser.
|
|
162
|
multipartParser = new MultipartParser(request, sizeLimit * 1024 * 1024);
|
|
163
|
responseMap = handleClientRequest(multipartParser);
|
|
164
|
} catch (IOException ex) {
|
|
165
|
responseMap = new HashMap();
|
|
166
|
responseMap.put("message", ex.getMessage());
|
|
167
|
}
|
|
168
|
clientViewBean.setAction("");
|
|
169
|
} else if (action.equals("Download")) {
|
|
170
|
responseMap = handleClientRequest(null);
|
|
171
|
try {
|
|
172
|
handleDownloadResponse(responseMap, response);
|
|
173
|
} catch (IOException ex) {
|
|
174
|
responseMap = new HashMap();
|
|
175
|
responseMap.put("message", ex.getMessage());
|
|
176
|
}
|
|
177
|
|
|
178
|
} else if (action.equals("Set Access")) {
|
|
179
|
responseMap = handleClientRequest(null);
|
|
180
|
clientViewBean.setAction("");
|
|
181
|
} else {
|
|
182
|
responseMap = handleClientRequest(null);
|
|
183
|
}
|
|
184
|
result = (String) responseMap.get("message");
|
|
185
|
}
|
|
186
|
} else {
|
|
187
|
result = "ClientViewHelper.clientRequest: ClientView bean is not instantiated.";
|
|
188
|
}
|
|
189
|
return(result);
|
|
190
|
}
|
|
191
|
|
|
192
|
/**
|
|
193
|
* Main method for handling various actions.
|
|
194
|
*
|
|
195
|
* Note: This is mostly plain java code so it is JUnit friendly
|
|
196
|
* (pass null as the MulipartParser).
|
|
197
|
*
|
|
198
|
* @param multipartParser Only needed if the action is "Upload".
|
|
199
|
* @return HashMap containing "message", and possibly several other values. If
|
|
200
|
* the action is Download, than this will contain all needed values
|
|
201
|
* to pass to handleDownloadResponse.
|
|
202
|
*/
|
|
203
|
public HashMap handleClientRequest(MultipartParser multipartParser) {
|
|
204
|
String result = "", serverResponse;
|
|
205
|
String button, posted_ldapUserName, tmp, action;
|
|
206
|
HashMap responseMap = new HashMap();
|
|
207
|
int fileIdx;
|
|
208
|
|
|
209
|
|
|
210
|
if (clientViewBean != null) {
|
|
211
|
action = clientViewBean.getAction();
|
|
212
|
if (action != null) {
|
|
213
|
try {
|
|
214
|
if (action.equals("Login")) {
|
|
215
|
tmp = LDAP_TEMPLATE.replaceFirst("%1s", clientViewBean.getUsername());
|
|
216
|
posted_ldapUserName = tmp.replaceFirst("%2s", clientViewBean.getOrganization());
|
|
217
|
|
|
218
|
serverResponse = metacatClient.login(posted_ldapUserName, clientViewBean.getPassword());
|
|
219
|
setLoggedIn(serverResponse);
|
|
220
|
result = parseXml("message", serverResponse);
|
|
221
|
contactName = parseXml("name", serverResponse);
|
|
222
|
clientViewBean.setMessage(ClientView.LOGIN_MESSAGE, result);
|
|
223
|
clientViewBean.setMessage(ClientView.UPLOAD_MESSAGE, "");
|
|
224
|
if (isLoggedIn()) {
|
|
225
|
clientViewBean.setSessionid(metacatClient.getSessionId());
|
|
226
|
}
|
|
227
|
} else if (action.equals("Logout")) {
|
|
228
|
result = metacatClient.logout();
|
|
229
|
setLoggedIn(result);
|
|
230
|
result = parseXml("message", result);
|
|
231
|
clientViewBean.setMessage(ClientView.LOGIN_MESSAGE, result);
|
|
232
|
clientViewBean.setMessage(ClientView.UPLOAD_MESSAGE, "");
|
|
233
|
if (!isLoggedIn()) {
|
|
234
|
clientViewBean.setUsername("");
|
|
235
|
clientViewBean.setPassword("");
|
|
236
|
clientViewBean.setOrganization("");
|
|
237
|
clientViewBean.setSessionid(null);
|
|
238
|
}
|
|
239
|
} else if (action.equals("Delete")) {
|
|
240
|
ClientFgdcHelper.clientDeleteRequest(clientViewBean, this);
|
|
241
|
clientViewBean.setAction("read"); //*** Set for re-query.
|
|
242
|
//*** Note: the clientViewBean will already have the updated Meta Doc Id.
|
|
243
|
|
|
244
|
} else if (action.equals("Upload")) {
|
|
245
|
//*** Only process request if logged in.
|
|
246
|
if (isLoggedIn()) {
|
|
247
|
if (multipartParser == null)
|
|
248
|
result = "ClientViewHelper.handleClientRequest: MultipartParser is not instantiated.";
|
|
249
|
else
|
|
250
|
result = handlePackageUpload(clientViewBean, multipartParser);
|
|
251
|
} else {
|
|
252
|
result = "You must be logged in to perform an upload.";
|
|
253
|
}
|
|
254
|
clientViewBean.setMessage(ClientView.UPLOAD_MESSAGE, result);
|
|
255
|
} else if (action.equals("Update")) {
|
|
256
|
result = "This is not implemented here. Call ClientViewHelper.jspx";
|
|
257
|
} else if (action.equals("Scope")) {
|
|
258
|
result = handleDocIdSelect();
|
|
259
|
clientViewBean.setMessage(ClientView.SELECT_MESSAGE, result);
|
|
260
|
} else if (action.equals("Download")) {
|
|
261
|
responseMap = download(clientViewBean);
|
|
262
|
} else if (action.equals("Set Access")) {
|
|
263
|
result = handleChangeAccess(clientViewBean.getMetaFileDocId(),
|
|
264
|
(clientViewBean.isPublicAccess()? PERMISSION_TYPE_ALLOW: PERMISSION_TYPE_DISALLOW));
|
|
265
|
clientViewBean.setMessage(ClientView.UPDATE_MESSAGE, result);
|
|
266
|
} else {
|
|
267
|
result = action + " action not recognized.";
|
|
268
|
}
|
|
269
|
} catch (Exception ex) {
|
|
270
|
result = ex.getMessage();
|
|
271
|
clientViewBean.setMessage(ClientView.ERROR_MESSAGE, result);
|
|
272
|
ex.printStackTrace();
|
|
273
|
}
|
|
274
|
}
|
|
275
|
} else {
|
|
276
|
result = "ClientViewHelper.clientRequest: ClientView bean is not instantiated.";
|
|
277
|
}
|
|
278
|
responseMap.put("message", result);
|
|
279
|
return(responseMap);
|
|
280
|
}
|
|
281
|
|
|
282
|
/**
|
|
283
|
* This is a convenience method to reduce the amount of code in a Metacat Client.
|
|
284
|
* It handles creating/reusing (per session) an instance of a ClientViewHelper.
|
|
285
|
* @param request Since this is intended to be used by an Http client, it is passed the
|
|
286
|
* available "request" variable (the HttpServletRequest).
|
|
287
|
* @throws edu.ucsb.nceas.metacat.client.MetacatInaccessibleException Received by MetacatFactory.
|
|
288
|
* @return ClientViewHelper instance.
|
|
289
|
*/
|
|
290
|
public static ClientViewHelper clientViewHelperInstance(HttpServletRequest request) {
|
|
291
|
ClientViewHelper result;
|
|
292
|
|
|
293
|
result = (ClientViewHelper) request.getSession().getAttribute("ClientViewHelper");
|
|
294
|
if (result == null) {
|
|
295
|
try {
|
|
296
|
result = new ClientViewHelper(request);
|
|
297
|
request.getSession().setAttribute("ClientViewHelper", result);
|
|
298
|
} catch (MetacatInaccessibleException ex) {
|
|
299
|
ex.printStackTrace();
|
|
300
|
}
|
|
301
|
}
|
|
302
|
|
|
303
|
return(result);
|
|
304
|
}
|
|
305
|
|
|
306
|
/**
|
|
307
|
* A convenience method to be used by client code that requires
|
|
308
|
* the user to be logged in. NOTE: setUser() must have been called first,
|
|
309
|
* otherwise it will always return false.
|
|
310
|
* @return boolean true if user has logged in for this session, false otherwise.
|
|
311
|
*/
|
|
312
|
public boolean isLoggedIn() {
|
|
313
|
return(loggedIn);
|
|
314
|
}
|
|
315
|
|
|
316
|
/**
|
|
317
|
* After calling "login(ldapUserName, pwd)", call this with the username
|
|
318
|
* and servers response message. You can than use isLoggedIn() to determine if
|
|
319
|
* the user is logged in, getLoginResponseElement(), etc. The user name will also
|
|
320
|
* used by calls to doMetadataUpload() for Document Id creation (scope).
|
|
321
|
* @param userName User name
|
|
322
|
* @param serverResponse XML login response sent from Metacat.
|
|
323
|
*/
|
|
324
|
public void setLoggedIn(String serverResponse) {
|
|
325
|
loggedIn = (serverResponse != null && serverResponse.indexOf("login") > -1);
|
|
326
|
}
|
|
327
|
|
|
328
|
public String parseXml(String elementName, String xml) {
|
|
329
|
String result = null;
|
|
330
|
Document doc;
|
|
331
|
|
|
332
|
try {
|
|
333
|
doc = XMLUtilities.getXMLReaderAsDOMDocument(new StringReader(xml));
|
|
334
|
result = (String) xpath.evaluate(elementName, doc.getDocumentElement(), XPathConstants.STRING);
|
|
335
|
if (result != null)
|
|
336
|
result = result.trim();
|
|
337
|
} catch (IOException ex) {
|
|
338
|
ex.printStackTrace();
|
|
339
|
} catch (XPathExpressionException ex) {
|
|
340
|
ex.printStackTrace();
|
|
341
|
}
|
|
342
|
return(result);
|
|
343
|
}
|
|
344
|
|
|
345
|
public String handleDocIdSelect() {
|
|
346
|
String result = "";
|
|
347
|
TreeMap allDocIds;
|
|
348
|
|
|
349
|
if (!clientViewBean.getPathValue().equals("")) {
|
|
350
|
allDocIds = getSelectQueryMap();
|
|
351
|
result = ClientHtmlHelper.mapToHtmlSelect(allDocIds, "docId", "width: 240", 10);
|
|
352
|
}
|
|
353
|
return(result);
|
|
354
|
}
|
|
355
|
|
|
356
|
/**
|
|
357
|
* Handles metadata file and data file uploads for inserting new
|
|
358
|
* Metacat data packages. Note: if content type is not "multipart/form-data",
|
|
359
|
* nothing will happen.
|
|
360
|
* @param request HTTP request.
|
|
361
|
* @return A 1-line status message for the user.
|
|
362
|
*/
|
|
363
|
public String handlePackageUpload(ClientView clientViewBean, MultipartParser multipartParser) throws Exception {
|
|
364
|
String result = "", contentType, formatType;
|
|
365
|
String lastDocId, nextDocId, metaDocId, metaFileName;
|
|
366
|
String fileInfo[];
|
|
367
|
Reader reader;
|
|
368
|
int sizeLimit, idx;
|
|
369
|
InputStream inputStream;
|
|
370
|
HashMap paramsMap, dataDocIDs;
|
|
371
|
StringBuffer fileName;
|
|
372
|
boolean sendIt;
|
|
373
|
Iterator iterIt;
|
|
374
|
Stack docIdStack;
|
|
375
|
|
|
376
|
//*** Get the First file, which should be the metadata file.
|
|
377
|
paramsMap = new HashMap();
|
|
378
|
fileName = new StringBuffer();
|
|
379
|
inputStream = getNextInputStream(multipartParser, fileName, paramsMap);
|
|
380
|
metaFileName = fileName.toString();
|
|
381
|
if (metaFileName.toLowerCase().endsWith(".xml")) {
|
|
382
|
//*** Keep it here for updating.
|
|
383
|
setMetadataDoc(inputStream);
|
|
384
|
//*** Get the Metadata File's DOC ID.
|
|
385
|
lastDocId = getMetacatClient().getLastDocid(clientViewBean.getUsername());
|
|
386
|
metaDocId = lastDocId = nextDocId(lastDocId, clientViewBean.getUsername());
|
|
387
|
|
|
388
|
//*** Loop thru all of the data files, get fileName and inputStream.
|
|
389
|
dataDocIDs = new HashMap();
|
|
390
|
fileName = new StringBuffer();
|
|
391
|
while ((inputStream = getNextInputStream(multipartParser, fileName, paramsMap)) != null) {
|
|
392
|
//*** Get the data file's DOC ID.
|
|
393
|
nextDocId = nextDocId(lastDocId, clientViewBean.getUsername());
|
|
394
|
|
|
395
|
fileInfo = parseFileInfo(fileName.toString());
|
|
396
|
dataDocIDs.put(nextDocId, fileInfo);
|
|
397
|
|
|
398
|
//*** Upload the data file to metacat.
|
|
399
|
getMetacatClient().upload(nextDocId, fileName.toString(), inputStream, Integer.MAX_VALUE);
|
|
400
|
|
|
401
|
lastDocId = nextDocId;
|
|
402
|
fileName = new StringBuffer();
|
|
403
|
}
|
|
404
|
|
|
405
|
if (ClientFgdcHelper.isFGDC(getMetadataDoc())) {
|
|
406
|
sendIt = ClientFgdcHelper.handlePackageUpload(metaDocId, dataDocIDs, contactName, metaFileName, getMetadataDoc());
|
|
407
|
} else {
|
|
408
|
//TODO add other types of metadata grammars here...
|
|
409
|
System.out.println("ClientViewHelper.handlePackageUpload: not an FGDC file = " + fileName);
|
|
410
|
result = fileName + " is not an FGDC file. Files not uploaded.";
|
|
411
|
sendIt = false;
|
|
412
|
}
|
|
413
|
|
|
414
|
if (sendIt) {
|
|
415
|
//*** Upload the metadata file to metacat.
|
|
416
|
reader = XMLUtilities.getDOMTreeAsReader(metadataDoc.getDocumentElement(), false);
|
|
417
|
getMetacatClient().insert(metaDocId, reader, null);
|
|
418
|
|
|
419
|
result = "MetaCat Package Inserted: the Document Identifier is " + metaDocId;
|
|
420
|
reader.close();
|
|
421
|
//*** Grant the public read access to the meta file.
|
|
422
|
if (paramsMap.containsKey("publicAccess")) {
|
|
423
|
docIdStack = new Stack();
|
|
424
|
docIdStack.addAll(dataDocIDs.keySet());
|
|
425
|
setPublicAccess(this.PERMISSION_TYPE_ALLOW, metaDocId, docIdStack);
|
|
426
|
}
|
|
427
|
}
|
|
428
|
} else {
|
|
429
|
result = "The first file must be an XML Metadata file. Files not uploaded.";
|
|
430
|
}
|
|
431
|
if (inputStream != null)
|
|
432
|
inputStream.close();
|
|
433
|
return(result);
|
|
434
|
}
|
|
435
|
|
|
436
|
private String setPublicAccess(String permissionType, String metaDocId, Stack docIdStack)
|
|
437
|
throws InsufficientKarmaException, MetacatException, MetacatInaccessibleException {
|
|
438
|
String result = " for Documents ";
|
|
439
|
String docId, lst = metaDocId, permOrder;
|
|
440
|
|
|
441
|
if (permissionType.equals("allow"))
|
|
442
|
permOrder = "denyFirst";
|
|
443
|
else
|
|
444
|
permOrder = "allowFirst";
|
|
445
|
|
|
446
|
getMetacatClient().setAccess(metaDocId, "public", "read", permissionType, permOrder);
|
|
447
|
//*** Grant the public read access to the data files.
|
|
448
|
while(!docIdStack.isEmpty()) {
|
|
449
|
docId = (String) docIdStack.pop();
|
|
450
|
getMetacatClient().setAccess(docId, "public", "read", permissionType, permOrder);
|
|
451
|
lst += ", " + docId;
|
|
452
|
}
|
|
453
|
result = "Changed public read access to '" + permissionType + "' for " + result + lst;
|
|
454
|
return(result);
|
|
455
|
}
|
|
456
|
|
|
457
|
private String handleChangeAccess(String metaDocId, String permissionType) throws Exception {
|
|
458
|
Stack dataDocIDs;
|
|
459
|
String result = "", xpathExpr = null;
|
|
460
|
|
|
461
|
setMetadataDoc(metaDocId);
|
|
462
|
//*** Build list of sub-documents.
|
|
463
|
if (clientViewBean.getContentStandard().equals(ClientView.FEDERAL_GEOGRAPHIC_DATA_COMMITTEE)) {
|
|
464
|
xpathExpr = ClientFgdcHelper.SUB_DOCS_PATH;
|
|
465
|
} else if (clientViewBean.getContentStandard().equals(ClientView.ECOLOGICAL_METADATA_LANGUAGE)) {
|
|
466
|
xpathExpr = null; //TODO - EML
|
|
467
|
}
|
|
468
|
if (xpathExpr != null) {
|
|
469
|
dataDocIDs = getNodeTextStack(xpath, xpathExpr, getMetadataDoc().getDocumentElement());
|
|
470
|
result = setPublicAccess(permissionType, metaDocId, dataDocIDs);
|
|
471
|
}
|
|
472
|
return(result);
|
|
473
|
}
|
|
474
|
|
|
475
|
public String handleFileUpdate(MultipartParser multipartParser) throws Exception {
|
|
476
|
String result = "", fNm, action, lastDocId, newDocId, xPathQuery, qFrmt;
|
|
477
|
InputStream inputStream;
|
|
478
|
HashMap paramsMap;
|
|
479
|
StringBuffer fileName;
|
|
480
|
Iterator iterIt;
|
|
481
|
boolean sendIt;
|
|
482
|
String metadataDocId, fileInfo[];
|
|
483
|
|
|
484
|
paramsMap = new HashMap();
|
|
485
|
fileName = new StringBuffer();
|
|
486
|
if ((inputStream = getNextInputStream(multipartParser, fileName, paramsMap)) != null) {
|
|
487
|
action = (String) paramsMap.get("action");
|
|
488
|
//*** Get the Doc Id.
|
|
489
|
lastDocId = (String) paramsMap.get("docid");
|
|
490
|
|
|
491
|
//*** Get the metadata Doc Id.
|
|
492
|
metadataDocId = (String) paramsMap.get("metadataDocId");
|
|
493
|
clientViewBean.setMetaFileDocId(metadataDocId);
|
|
494
|
|
|
495
|
//*** Get the qformat.
|
|
496
|
qFrmt = (String) paramsMap.get("qformat");
|
|
497
|
clientViewBean.setQformat(qFrmt);
|
|
498
|
|
|
499
|
fNm = fileName.toString();
|
|
500
|
|
|
501
|
try {
|
|
502
|
if (lastDocId.equals(metadataDocId)) { //*** This is the metadata file.
|
|
503
|
//*** Keep it here for updating.
|
|
504
|
setMetadataDoc(inputStream);
|
|
505
|
if (ClientFgdcHelper.isFGDC(getMetadataDoc())) {
|
|
506
|
clientViewBean.setContentStandard(ClientView.FEDERAL_GEOGRAPHIC_DATA_COMMITTEE);
|
|
507
|
if (!ClientFgdcHelper.hasMetacatInfo(lastDocId, getMetadataDoc())) {
|
|
508
|
|
|
509
|
//*** Save the Doc Id for re-query.
|
|
510
|
clientViewBean.setMetaFileDocId(lastDocId);
|
|
511
|
clientViewBean.setAction("read"); //*** Set for re-query.
|
|
512
|
result = "Update not performed: the Metadata file has no prior Metacat info in it.";
|
|
513
|
} else {
|
|
514
|
xPathQuery = ClientFgdcHelper.XPATH_QUERY_TEMPLATE.replaceFirst("%1s", lastDocId);
|
|
515
|
newDocId = updateMetadataDoc(lastDocId, xPathQuery, fNm);
|
|
516
|
|
|
517
|
//*** Save the Doc Id for re-query.
|
|
518
|
clientViewBean.setMetaFileDocId(newDocId);
|
|
519
|
clientViewBean.setAction("read"); //*** Set for re-query.
|
|
520
|
result = "Updated to new document (from " + lastDocId + " to " + newDocId + ")";
|
|
521
|
}
|
|
522
|
} else {
|
|
523
|
//***TODO This is EML.
|
|
524
|
clientViewBean.setContentStandard(ClientView.ECOLOGICAL_METADATA_LANGUAGE);
|
|
525
|
|
|
526
|
//*** Save the Doc Id for re-query.
|
|
527
|
clientViewBean.setMetaFileDocId(lastDocId);
|
|
528
|
clientViewBean.setAction("read"); //*** Set for re-query.
|
|
529
|
result = "Currently this functionality only supports FGDC metadata.";
|
|
530
|
}
|
|
531
|
} else {
|
|
532
|
//*** This is a data file.
|
|
533
|
//*** Query for the metadata, we need to update it with the new data file doc id.
|
|
534
|
setMetadataDoc(metadataDocId);
|
|
535
|
|
|
536
|
if (ClientFgdcHelper.isFGDC(getMetadataDoc())) {
|
|
537
|
clientViewBean.setContentStandard(ClientView.FEDERAL_GEOGRAPHIC_DATA_COMMITTEE);
|
|
538
|
fileInfo = parseFileInfo(fNm);
|
|
539
|
|
|
540
|
xPathQuery = ClientFgdcHelper.FGDC_DATA_FILE_QUERY_XPATH.replaceFirst("%1s", lastDocId);
|
|
541
|
newDocId = nextVersion(lastDocId, xPathQuery);
|
|
542
|
ClientFgdcHelper.updateFileNameAndType(getMetadataDoc().getDocumentElement(), newDocId, fileInfo);
|
|
543
|
//*** Upload the data file to metacat.
|
|
544
|
getMetacatClient().upload(newDocId, fNm, inputStream, Integer.MAX_VALUE);
|
|
545
|
result = "Updated to new document (from " + lastDocId + " to " + newDocId + ")";
|
|
546
|
|
|
547
|
//*** Upload the metadata file to metacat.
|
|
548
|
xPathQuery = ClientFgdcHelper.XPATH_QUERY_TEMPLATE.replaceFirst("%1s", metadataDocId);
|
|
549
|
newDocId = updateMetadataDoc(metadataDocId, xPathQuery, null);
|
|
550
|
|
|
551
|
//*** Save the new meta Doc Id for re-query.
|
|
552
|
clientViewBean.setMetaFileDocId(newDocId);
|
|
553
|
clientViewBean.setAction("read"); //*** Set for re-query.
|
|
554
|
|
|
555
|
} else {
|
|
556
|
//***TODO This is EML.
|
|
557
|
clientViewBean.setContentStandard(ClientView.ECOLOGICAL_METADATA_LANGUAGE);
|
|
558
|
|
|
559
|
//*** Save the old meta Doc Id for re-query.
|
|
560
|
clientViewBean.setMetaFileDocId(metadataDocId);
|
|
561
|
clientViewBean.setAction("read"); //*** Set for re-query.
|
|
562
|
result = "Currently this functionality only supports FGDC metadata.";
|
|
563
|
}
|
|
564
|
}
|
|
565
|
} catch (java.io.IOException ex) {
|
|
566
|
ex.printStackTrace();
|
|
567
|
}
|
|
568
|
} else {
|
|
569
|
result = "Please enter the updated file path/name.";
|
|
570
|
}
|
|
571
|
clientViewBean.setMessage(ClientView.UPDATE_MESSAGE, result);
|
|
572
|
return(result);
|
|
573
|
}
|
|
574
|
|
|
575
|
private String updateMetadataDoc(String lastDocId, String docIdPath, String origFileName) {
|
|
576
|
String newDocId = null;
|
|
577
|
Reader reader;
|
|
578
|
|
|
579
|
//*** Update the metadata with the new Doc Id version.
|
|
580
|
try {
|
|
581
|
newDocId = nextVersion(lastDocId, docIdPath);
|
|
582
|
if (origFileName != null) {
|
|
583
|
if (clientViewBean.getContentStandard().equals(ClientView.FEDERAL_GEOGRAPHIC_DATA_COMMITTEE))
|
|
584
|
ClientFgdcHelper.updateMetadataFileName(getMetadataDoc().getDocumentElement(), newDocId, origFileName);
|
|
585
|
else
|
|
586
|
; //TODO EML, etc.
|
|
587
|
}
|
|
588
|
//*** Upload the metadata file to metacat.
|
|
589
|
reader = XMLUtilities.getDOMTreeAsReader(getMetadataDoc().getDocumentElement(), false);
|
|
590
|
getMetacatClient().update(newDocId, reader, null);
|
|
591
|
reader.close();
|
|
592
|
} catch (Exception ex) {
|
|
593
|
ex.printStackTrace();
|
|
594
|
}
|
|
595
|
return(newDocId);
|
|
596
|
}
|
|
597
|
|
|
598
|
private InputStream getNextInputStream(MultipartParser multipartParser, StringBuffer fileName, HashMap paramsMap)
|
|
599
|
throws IOException {
|
|
600
|
InputStream result = null;
|
|
601
|
Part part;
|
|
602
|
String parmName = null, value = null, fnam;
|
|
603
|
|
|
604
|
while ((part = multipartParser.readNextPart()) != null) {
|
|
605
|
if (part.isParam()) {
|
|
606
|
parmName = part.getName();
|
|
607
|
value = ((ParamPart) part).getStringValue();
|
|
608
|
paramsMap.put(parmName, value);
|
|
609
|
|
|
610
|
} else if (part.isFile()) {
|
|
611
|
fnam = ((FilePart) part).getFileName();
|
|
612
|
if (fnam != null && !fnam.equals("")) {
|
|
613
|
//*** File name is passed back via StringBuffer fileName param.
|
|
614
|
fileName.append(fnam);
|
|
615
|
result = ((FilePart) part).getInputStream();
|
|
616
|
break;
|
|
617
|
}
|
|
618
|
}
|
|
619
|
}
|
|
620
|
return(result);
|
|
621
|
}
|
|
622
|
|
|
623
|
private void getRemainingParameters(MultipartParser multipartParser, HashMap paramsMap)
|
|
624
|
throws IOException {
|
|
625
|
InputStream result = null;
|
|
626
|
Part part;
|
|
627
|
String parmName = null, value = null, fnam;
|
|
628
|
|
|
629
|
while ((part = multipartParser.readNextPart()) != null) {
|
|
630
|
if (part.isParam()) {
|
|
631
|
parmName = part.getName();
|
|
632
|
value = ((ParamPart) part).getStringValue();
|
|
633
|
paramsMap.put(parmName, value);
|
|
634
|
}
|
|
635
|
}
|
|
636
|
}
|
|
637
|
|
|
638
|
/**
|
|
639
|
* Queries Metacat for document listings, and returns the results in a TreeMap,
|
|
640
|
* where the key is the Doc Id, and the value is the Create Date. If the document
|
|
641
|
* contains the specified 'returnfield', an addtional entry will be created with
|
|
642
|
* the value being a Vector of sub-DocId's. The key of this entry will be the
|
|
643
|
* original DocId with some addtional text added.
|
|
644
|
* Reads bean properties 'pathExpr' (String[]), 'pathValue' (String)
|
|
645
|
* and 'returnfield' (String).
|
|
646
|
* @return TreeMap
|
|
647
|
*/
|
|
648
|
public TreeMap getSelectQueryMap() {
|
|
649
|
TreeMap result;
|
|
650
|
Document doc;
|
|
651
|
NodeList nodeLst, subNodeLst;
|
|
652
|
Node node, subNode;
|
|
653
|
String key, val, paramExpr, paramVal;
|
|
654
|
String value, returnFld;
|
|
655
|
String path;
|
|
656
|
Vector optGroup;
|
|
657
|
final String DOCID_EXPR = "./docid";
|
|
658
|
final String DOCNAME_EXPR = "./createdate";
|
|
659
|
final String PARAM_EXPR = "./param[@name='%1s']";
|
|
660
|
|
|
661
|
path = clientViewBean.getPathExpr();
|
|
662
|
returnFld = clientViewBean.getReturnfield();
|
|
663
|
value = clientViewBean.getPathValue();
|
|
664
|
|
|
665
|
result = new TreeMap();
|
|
666
|
//paramExpr = String.format(PARAM_EXPR, returnFld);
|
|
667
|
paramExpr = PARAM_EXPR.replaceFirst("%1s", returnFld);
|
|
668
|
//*** Query the database ***
|
|
669
|
doc = query(path, value, returnFld);
|
|
670
|
//*** Build the TreeMap to return ***
|
|
671
|
try {
|
|
672
|
nodeLst = (NodeList) xpath.evaluate("/resultset/document", doc, XPathConstants.NODESET);
|
|
673
|
for (int i = 0; i < nodeLst.getLength(); i++) {
|
|
674
|
node = nodeLst.item(i);
|
|
675
|
key = xpath.evaluate(DOCID_EXPR, node);
|
|
676
|
val = xpath.evaluate(DOCNAME_EXPR, node);
|
|
677
|
result.put(key, key + " (" + val + ")");
|
|
678
|
|
|
679
|
//*** returnfield values ***
|
|
680
|
subNodeLst = (NodeList) xpath.evaluate(paramExpr, node, XPathConstants.NODESET);
|
|
681
|
if (subNodeLst.getLength() > 0) {
|
|
682
|
optGroup = new Vector();
|
|
683
|
for (int k = 0; k < subNodeLst.getLength(); k++) {
|
|
684
|
subNode = subNodeLst.item(k);
|
|
685
|
paramVal = xpath.evaluate("text()", subNode);
|
|
686
|
optGroup.add(paramVal);
|
|
687
|
}
|
|
688
|
result.put(key + " Data Files", optGroup);
|
|
689
|
}
|
|
690
|
|
|
691
|
}
|
|
692
|
} catch (XPathExpressionException ex) {
|
|
693
|
ex.printStackTrace();
|
|
694
|
}
|
|
695
|
return(result);
|
|
696
|
}
|
|
697
|
|
|
698
|
/**
|
|
699
|
* Query metacat for documents that 'CONTAINS' the value at the specified XPath
|
|
700
|
* expression. Additionally, returns another non-standard field value.
|
|
701
|
* Standard info contains: DocId, DocName, DocType, CreateDate, and UpdateDate.
|
|
702
|
* @param pathExpr String contianing an XPath expression.
|
|
703
|
* @param pathValue String containing a comparison value at the XPath expression.
|
|
704
|
* @param returnFld String containing an XPath expression to a field which will be returned
|
|
705
|
* in addition to the standard info.
|
|
706
|
* @return DOM Document containing the results.
|
|
707
|
*/
|
|
708
|
public Document query(String pathExpr, String pathValue, String returnFld) {
|
|
709
|
Document result = null;
|
|
710
|
InputStream response;
|
|
711
|
BufferedReader buffy;
|
|
712
|
Properties prop;
|
|
713
|
|
|
714
|
try {
|
|
715
|
prop = new Properties();
|
|
716
|
prop.put("action", "query");
|
|
717
|
prop.put("qformat", "xml");
|
|
718
|
prop.put(pathExpr, pathValue);
|
|
719
|
if (returnFld != null) {
|
|
720
|
prop.put("returnfield", returnFld);
|
|
721
|
}
|
|
722
|
|
|
723
|
response = metacatClient.sendData(prop, null, null, 0);
|
|
724
|
if (response != null) {
|
|
725
|
buffy = new BufferedReader(new InputStreamReader(response));
|
|
726
|
result = XMLUtilities.getXMLReaderAsDOMDocument(buffy);
|
|
727
|
}
|
|
728
|
} catch (IOException ex) {
|
|
729
|
ex.printStackTrace();
|
|
730
|
} catch (Exception ex) {
|
|
731
|
ex.printStackTrace();
|
|
732
|
}
|
|
733
|
return(result);
|
|
734
|
}
|
|
735
|
|
|
736
|
public void setMetadataDoc(Document doc) {
|
|
737
|
metadataDoc = doc;
|
|
738
|
}
|
|
739
|
|
|
740
|
public void setMetadataDoc(String docId) throws Exception {
|
|
741
|
Document doc = null;
|
|
742
|
BufferedReader buffy;
|
|
743
|
Properties prop;
|
|
744
|
InputStream response;
|
|
745
|
|
|
746
|
//*** MetaCatServlet Properties: action, qformat and docid. ***
|
|
747
|
prop = new Properties();
|
|
748
|
prop.put("action", "read");
|
|
749
|
prop.put("qformat", "xml");
|
|
750
|
prop.put("docid", docId);
|
|
751
|
response = metacatClient.sendData(prop, null, null, 0);
|
|
752
|
if (response != null) {
|
|
753
|
buffy = new BufferedReader(new InputStreamReader(response));
|
|
754
|
doc = XMLUtilities.getXMLReaderAsDOMDocument(buffy);
|
|
755
|
response.close();
|
|
756
|
}
|
|
757
|
setMetadataDoc(doc);
|
|
758
|
}
|
|
759
|
|
|
760
|
public void setMetadataDoc(InputStream ioStream) throws IOException {
|
|
761
|
BufferedReader buffy;
|
|
762
|
|
|
763
|
if (ioStream != null) {
|
|
764
|
buffy = new BufferedReader(new InputStreamReader(ioStream));
|
|
765
|
metadataDoc = XMLUtilities.getXMLReaderAsDOMDocument(buffy);
|
|
766
|
}
|
|
767
|
}
|
|
768
|
|
|
769
|
public Document getMetadataDoc() {
|
|
770
|
return(metadataDoc);
|
|
771
|
}
|
|
772
|
|
|
773
|
public String nextVersion(String lastDocId, String xPathQuery) throws XPathExpressionException {
|
|
774
|
String result = null, tokens[], scope, ready2Split, tmp;
|
|
775
|
int vers, docNum;
|
|
776
|
final int LAST_TOKEN = 2;
|
|
777
|
final String TEMPLATE = "%1s.%2d.%3d";
|
|
778
|
Node node;
|
|
779
|
|
|
780
|
//*** Parse the last Doc Id, and increment the version number.
|
|
781
|
if(lastDocId != null && lastDocId.indexOf(".") > -1) {
|
|
782
|
ready2Split = lastDocId.replace('.','~'); //*** This is necessary for the split to work.
|
|
783
|
tokens = ready2Split.split("~");
|
|
784
|
if(tokens.length > LAST_TOKEN && !tokens[LAST_TOKEN].equals("")) {
|
|
785
|
scope = tokens[LAST_TOKEN - 2];
|
|
786
|
docNum = Integer.parseInt(tokens[LAST_TOKEN - 1]);
|
|
787
|
try {
|
|
788
|
vers = Integer.parseInt(tokens[LAST_TOKEN]);
|
|
789
|
//result = String.format(TEMPLATE, scope, docNum, 1 + vers);
|
|
790
|
tmp = TEMPLATE.replaceFirst("%1s", scope);
|
|
791
|
tmp = tmp.replaceFirst("%2d", String.valueOf(docNum));
|
|
792
|
result = tmp.replaceFirst("%3d", String.valueOf(vers + 1));
|
|
793
|
|
|
794
|
} catch (NumberFormatException ex) {
|
|
795
|
//*** In case the lastDocId has something other than a number.
|
|
796
|
//result = String.format(TEMPLATE, scope, docNum, 1);
|
|
797
|
tmp = TEMPLATE.replaceFirst("%1s", scope);
|
|
798
|
tmp = tmp.replaceFirst("%2d", String.valueOf(docNum));
|
|
799
|
result = tmp.replaceFirst("%3d", "1");
|
|
800
|
}
|
|
801
|
} else {
|
|
802
|
//*** In case the lastDocId ends with a '.'
|
|
803
|
result = lastDocId + "1";
|
|
804
|
}
|
|
805
|
} else {
|
|
806
|
//*** In case of missing doc Id.
|
|
807
|
result = null;
|
|
808
|
}
|
|
809
|
//*** Update the Doc Id in the metadata file.
|
|
810
|
if (getMetadataDoc() != null) {
|
|
811
|
node = (Node) xpath.evaluate(xPathQuery, getMetadataDoc().getDocumentElement(), XPathConstants.NODE);
|
|
812
|
setTextContent(xpath, node, result);
|
|
813
|
}
|
|
814
|
return(result);
|
|
815
|
}
|
|
816
|
|
|
817
|
private String nextDocId(String lastDocId, String scope) {
|
|
818
|
String result = null, tokens[], tmp;
|
|
819
|
int vers;
|
|
820
|
String template = scope.toLowerCase() + ".%1d.%2d";
|
|
821
|
|
|
822
|
if(lastDocId != null && lastDocId.indexOf(".") > -1) {
|
|
823
|
lastDocId = lastDocId.replace('.','~'); //*** This is necessary for the split to work.
|
|
824
|
tokens = lastDocId.split("~");
|
|
825
|
if(tokens.length > 1 && !tokens[1].equals("")) {
|
|
826
|
try {
|
|
827
|
vers = Integer.parseInt(tokens[1]);
|
|
828
|
//result = String.format(template, 1 + vers, 1);
|
|
829
|
tmp = template.replaceFirst("%1d", String.valueOf(1 + vers));
|
|
830
|
result = tmp.replaceFirst("%2d", "1");
|
|
831
|
} catch (NumberFormatException ex) {
|
|
832
|
//*** In case the lastDocId has something other than a number.
|
|
833
|
//result = String.format(template, 1, 1);
|
|
834
|
tmp = template.replaceFirst("%1d", "1");
|
|
835
|
result = tmp.replaceFirst("%2d", "1");
|
|
836
|
}
|
|
837
|
} else {
|
|
838
|
//*** In case the lastDocId ends with a '.'
|
|
839
|
//result = String.format(template, 1, 1);
|
|
840
|
tmp = template.replaceFirst("%1d", "1");
|
|
841
|
result = tmp.replaceFirst("%2d", "1");
|
|
842
|
}
|
|
843
|
} else {
|
|
844
|
//*** In case there isn't any doc Id's with the user name.
|
|
845
|
//result = String.format(template, 1, 1);
|
|
846
|
tmp = template.replaceFirst("%1d", "1");
|
|
847
|
result = tmp.replaceFirst("%2d", "1");
|
|
848
|
}
|
|
849
|
return(result);
|
|
850
|
}
|
|
851
|
|
|
852
|
public MetacatClient getMetacatClient() {
|
|
853
|
return(metacatClient);
|
|
854
|
}
|
|
855
|
|
|
856
|
//*** BEGIN: Static utility methods ***
|
|
857
|
|
|
858
|
public static String[] parseFileInfo(String fileName) {
|
|
859
|
String[] result = new String[2];
|
|
860
|
int idx;
|
|
861
|
String formatType;
|
|
862
|
|
|
863
|
//*** Set the file format (just using file extension for now).
|
|
864
|
idx = fileName.lastIndexOf(".");
|
|
865
|
if (idx > 1)
|
|
866
|
formatType = fileName.substring(idx+1).toUpperCase();
|
|
867
|
else
|
|
868
|
formatType = "";
|
|
869
|
|
|
870
|
result[ClientView.FORMAT_TYPE] = formatType;
|
|
871
|
result[ClientView.FILE_NAME] = fileName.toString();
|
|
872
|
return(result);
|
|
873
|
}
|
|
874
|
|
|
875
|
public static void updateNodeText(Node root, XPath xPath, String expression, String text) {
|
|
876
|
Node targetNode;
|
|
877
|
|
|
878
|
if (text != null && !text.equals("")) {
|
|
879
|
try {
|
|
880
|
targetNode = (Node) xPath.evaluate(expression, root, XPathConstants.NODE);
|
|
881
|
setTextContent(xPath, targetNode, text);
|
|
882
|
//targetNode.setTextContent(text);
|
|
883
|
} catch (XPathExpressionException ex) {
|
|
884
|
ex.printStackTrace();
|
|
885
|
}
|
|
886
|
}
|
|
887
|
}
|
|
888
|
|
|
889
|
|
|
890
|
public static Node getNode(XPath xPath, String expression, Node root) {
|
|
891
|
Node result = null;
|
|
892
|
|
|
893
|
try {
|
|
894
|
result = (Node) xPath.evaluate(expression, root, XPathConstants.NODE);
|
|
895
|
} catch (XPathExpressionException ex) {
|
|
896
|
ex.printStackTrace();
|
|
897
|
}
|
|
898
|
return(result);
|
|
899
|
|
|
900
|
}
|
|
901
|
|
|
902
|
public static String getNodeText(XPath xPath, String expression, Node root) {
|
|
903
|
Node node;
|
|
904
|
String result = null;
|
|
905
|
|
|
906
|
node = getNode(xPath, expression, root);
|
|
907
|
if (node != null && !node.equals(""))
|
|
908
|
result = getTextContent(xPath, node);
|
|
909
|
//result = node.getTextContent(); Not in java 1.4
|
|
910
|
return(result);
|
|
911
|
}
|
|
912
|
|
|
913
|
public static String[] getNodeTextList(XPath xPath, String expression, Node root) {
|
|
914
|
NodeList nodes;
|
|
915
|
String result[] = new String[0];
|
|
916
|
int size;
|
|
917
|
|
|
918
|
try {
|
|
919
|
nodes = (NodeList) xPath.evaluate(expression, root, XPathConstants.NODESET);
|
|
920
|
if (nodes != null && (size = nodes.getLength()) > 0) {
|
|
921
|
result = new String[size];
|
|
922
|
for(int i = 0; i < size; i++)
|
|
923
|
result[i] = getTextContent(xPath, nodes.item(i));
|
|
924
|
//result[i] = nodes.item(i).getTextContent(); Not in java 1.4
|
|
925
|
}
|
|
926
|
} catch (XPathExpressionException ex) {
|
|
927
|
ex.printStackTrace();
|
|
928
|
}
|
|
929
|
return(result);
|
|
930
|
}
|
|
931
|
|
|
932
|
public static Stack getNodeTextStack(XPath xpathInstance, String xpathExpr, Node parentNode) {
|
|
933
|
String nodeLst[];
|
|
934
|
Stack result = new Stack();
|
|
935
|
|
|
936
|
nodeLst = getNodeTextList(xpathInstance, xpathExpr, parentNode);
|
|
937
|
for(int i = 0; i < nodeLst.length; i++)
|
|
938
|
result.push(nodeLst[i]);
|
|
939
|
return(result);
|
|
940
|
}
|
|
941
|
|
|
942
|
public static String getStringFromInputStream(InputStream input) {
|
|
943
|
StringBuffer result = new StringBuffer();
|
|
944
|
BufferedReader in = new BufferedReader(new InputStreamReader(input));
|
|
945
|
String line;
|
|
946
|
try {
|
|
947
|
while ((line = in.readLine()) != null) {
|
|
948
|
result.append(line);
|
|
949
|
}
|
|
950
|
} catch (IOException e) {
|
|
951
|
System.out.println("ClientViewHelper.getStringFromInputStream: " + e);
|
|
952
|
}
|
|
953
|
return result.toString();
|
|
954
|
}
|
|
955
|
|
|
956
|
//*** END: Static utility methods ***
|
|
957
|
|
|
958
|
public String makeRedirectUrl() {
|
|
959
|
String result, docId, message;
|
|
960
|
|
|
961
|
docId = clientViewBean.getMetaFileDocId();
|
|
962
|
if (clientViewBean.getAction().equals(DOWNLOAD_ACTION)) {
|
|
963
|
result = null;
|
|
964
|
} else if (docId != null && !docId.equals("")) {
|
|
965
|
message = clientViewBean.getMessage(ClientView.UPDATE_MESSAGE);
|
|
966
|
result = "metacat?action=read&qformat=" +clientViewBean.getQformat()
|
|
967
|
+ "&docid=" + docId + "&sessionid=" + clientViewBean.getSessionid() + "&message=" + message;
|
|
968
|
} else {
|
|
969
|
result = "style/skins/" + clientViewBean.getQformat() + "/confirm.jsp";
|
|
970
|
}
|
|
971
|
//*** Reset bean action property.
|
|
972
|
clientViewBean.setAction("");
|
|
973
|
return(result);
|
|
974
|
}
|
|
975
|
|
|
976
|
private HashMap download(ClientView bean) {
|
|
977
|
Properties args;
|
|
978
|
InputStream inStream;
|
|
979
|
String docId, metaId, fNm = null, pth, txtLst[];
|
|
980
|
String msg = "File '~' (~) downloaded";
|
|
981
|
Node branchRoot, metaRoot;
|
|
982
|
ByteArrayOutputStream outStream;
|
|
983
|
int intMe;
|
|
984
|
HashMap responseMap = new HashMap();
|
|
985
|
|
|
986
|
docId = bean.getDocId();
|
|
987
|
metaId = bean.getMetaFileDocId();
|
|
988
|
if (docId != null && metaId != null && !docId.equals("") && !metaId.equals("")) {
|
|
989
|
//*** Properties args: key=param_value, value=param_name.
|
|
990
|
args = new Properties();
|
|
991
|
args.put("read", "action");
|
|
992
|
try {
|
|
993
|
//*** First, retrieve the metadata and get the original filename.
|
|
994
|
//*** Also, if this is the metadata, get a list of docId's for the package.
|
|
995
|
setMetadataDoc(metaId);
|
|
996
|
metaRoot = getMetadataDoc().getDocumentElement();
|
|
997
|
if (ClientFgdcHelper.isFGDC(getMetadataDoc())) {
|
|
998
|
//*** FGDC
|
|
999
|
if (docId.equals(metaId)) { //*** This is the metadata file.
|
|
1000
|
pth = ClientFgdcHelper.FGDC_DOCID_ROOT_XPATH.replaceFirst("%1s", docId);
|
|
1001
|
branchRoot = getNode(xpath, pth, getMetadataDoc());
|
|
1002
|
fNm = getNodeText(xpath, ClientFgdcHelper.FGDC_FILE_NAME_XPATH, branchRoot);
|
|
1003
|
fNm = toZipFileName(fNm);
|
|
1004
|
responseMap.put("contentType", "application/zip");
|
|
1005
|
//*** Get the list of docId's for the entire package.
|
|
1006
|
args.put(metaId, "docid");
|
|
1007
|
txtLst = getNodeTextList(xpath, ClientFgdcHelper.FGDC_DATA_FILE_NODES_XPATH, branchRoot);
|
|
1008
|
for (int i = 0; i < txtLst.length; i++)
|
|
1009
|
args.put(txtLst[i], "docid");
|
|
1010
|
args.put("zip", "qformat");
|
|
1011
|
} else { //*** This is a data file.
|
|
1012
|
pth = ClientFgdcHelper.PATH4ANCESTOR.replaceFirst("%1s", docId);
|
|
1013
|
pth = pth.replaceFirst("%2s", "digform");
|
|
1014
|
branchRoot = getNode(xpath, pth, getMetadataDoc());
|
|
1015
|
fNm = getNodeText(xpath, ClientFgdcHelper.FGDC_DATA_FILE_NAME_XPATH, branchRoot);
|
|
1016
|
responseMap.put("contentType", "application/octet-stream");
|
|
1017
|
args.put(docId, "docid");
|
|
1018
|
args.put("xml", "qformat");
|
|
1019
|
}
|
|
1020
|
} else {
|
|
1021
|
//*** TODO: EML - this is just some basic code to start with.
|
|
1022
|
if (docId.equals(metaId)) {
|
|
1023
|
fNm = "emlMetadata.xml";
|
|
1024
|
txtLst = new String[] {docId};
|
|
1025
|
args.put(txtLst[0], "docid");
|
|
1026
|
args.put("zip", "qformat");
|
|
1027
|
responseMap.put("contentType", "application/zip");
|
|
1028
|
} else {
|
|
1029
|
fNm = "emlData.dat";
|
|
1030
|
args.put("xml", "qformat");
|
|
1031
|
args.put(docId, "docid");
|
|
1032
|
responseMap.put("contentType", "application/octet-stream");
|
|
1033
|
}
|
|
1034
|
}
|
|
1035
|
|
|
1036
|
//*** Set the filename in the response.
|
|
1037
|
responseMap.put("Content-Disposition", "attachment; filename=" + fNm);
|
|
1038
|
|
|
1039
|
//*** Next, read the file from metacat.
|
|
1040
|
inStream = metacatClient.sendParameters(args);
|
|
1041
|
|
|
1042
|
//*** Then, convert the input stream into an output stream.
|
|
1043
|
outStream = new ByteArrayOutputStream();
|
|
1044
|
while ((intMe = inStream.read()) != -1) {
|
|
1045
|
outStream.write(intMe);
|
|
1046
|
}
|
|
1047
|
|
|
1048
|
//*** Now, write the output stream to the response.
|
|
1049
|
responseMap.put("outputStream", outStream);
|
|
1050
|
|
|
1051
|
//*** Finally, set the message for the user interface to display.
|
|
1052
|
msg = msg.replaceFirst("~", fNm);
|
|
1053
|
msg = msg.replaceFirst("~", docId);
|
|
1054
|
bean.setMessage(ClientView.SELECT_MESSAGE, msg);
|
|
1055
|
} catch (Exception ex) {
|
|
1056
|
ex.printStackTrace();
|
|
1057
|
bean.setMessage(ClientView.SELECT_MESSAGE, ex.getMessage());
|
|
1058
|
}
|
|
1059
|
}
|
|
1060
|
responseMap.put("message", bean.getMessage(ClientView.SELECT_MESSAGE));
|
|
1061
|
return(responseMap);
|
|
1062
|
}
|
|
1063
|
|
|
1064
|
private void handleDownloadResponse(HashMap responseMap, HttpServletResponse response) throws IOException {
|
|
1065
|
ByteArrayOutputStream outStream;
|
|
1066
|
String contentDisposition, contentType;
|
|
1067
|
|
|
1068
|
contentType = (String) responseMap.get("contentType");
|
|
1069
|
contentDisposition = (String) responseMap.get("Content-Disposition");
|
|
1070
|
outStream = (ByteArrayOutputStream) responseMap.get("outputStream");
|
|
1071
|
|
|
1072
|
response.setContentType(contentType);
|
|
1073
|
response.setHeader("Content-Disposition", contentDisposition);
|
|
1074
|
response.setContentLength(outStream.size());
|
|
1075
|
outStream.writeTo(response.getOutputStream());
|
|
1076
|
response.flushBuffer();
|
|
1077
|
}
|
|
1078
|
|
|
1079
|
public static String toZipFileName(String fileName) {
|
|
1080
|
String result = "metacat";
|
|
1081
|
int idx;
|
|
1082
|
|
|
1083
|
if (fileName != null && !fileName.equals("") && !fileName.equals(".")) {
|
|
1084
|
idx = fileName.indexOf('.');
|
|
1085
|
if (idx > -1)
|
|
1086
|
result = fileName.substring(0, idx);
|
|
1087
|
else
|
|
1088
|
result = fileName;
|
|
1089
|
}
|
|
1090
|
result += ".zip";
|
|
1091
|
return(result);
|
|
1092
|
}
|
|
1093
|
|
|
1094
|
public static void setTextContent(XPath xPath, Node elementNode, String content) throws DOMException {
|
|
1095
|
Text textNode, newTxtNode;
|
|
1096
|
Document document;
|
|
1097
|
|
|
1098
|
textNode = (Text) getNode(xPath, "text()", elementNode);
|
|
1099
|
if (textNode != null) {
|
|
1100
|
if (isElementContentWhitespace(textNode)) {
|
|
1101
|
//*** If there is an existing text node, and it's whitespace,
|
|
1102
|
//*** create a new text node and insert it before whitespace.
|
|
1103
|
document = elementNode.getOwnerDocument();
|
|
1104
|
newTxtNode = document.createTextNode(content);
|
|
1105
|
elementNode.insertBefore(newTxtNode, textNode);
|
|
1106
|
} else {
|
|
1107
|
//*** If there is an existing text node, and it has content,
|
|
1108
|
//*** overwrite the existing text.
|
|
1109
|
textNode.setNodeValue(content);
|
|
1110
|
}
|
|
1111
|
} else {
|
|
1112
|
//*** If there isn't an existing text node,
|
|
1113
|
//*** create a new text node and append it to the elementNode.
|
|
1114
|
document = elementNode.getOwnerDocument();
|
|
1115
|
newTxtNode = document.createTextNode(content);
|
|
1116
|
elementNode.appendChild(newTxtNode);
|
|
1117
|
}
|
|
1118
|
}
|
|
1119
|
|
|
1120
|
public static String getTextContent(XPath xPath, Node elementNode) throws DOMException {
|
|
1121
|
String result = "";
|
|
1122
|
Text textNode;
|
|
1123
|
|
|
1124
|
if (elementNode.getNodeType() != Node.TEXT_NODE)
|
|
1125
|
textNode = (Text) getNode(xPath, "text()", elementNode);
|
|
1126
|
else
|
|
1127
|
textNode = (Text) elementNode;
|
|
1128
|
if (textNode != null)
|
|
1129
|
result = textNode.getNodeValue();
|
|
1130
|
return(result);
|
|
1131
|
}
|
|
1132
|
|
|
1133
|
public static boolean isElementContentWhitespace(Text textNode) {
|
|
1134
|
boolean result = false;
|
|
1135
|
String val;
|
|
1136
|
|
|
1137
|
if ((val = textNode.getNodeValue()) != null) {
|
|
1138
|
if (val != null) {
|
|
1139
|
val = val.trim();
|
|
1140
|
result = (val.length() == 0);
|
|
1141
|
}
|
|
1142
|
}
|
|
1143
|
return(result);
|
|
1144
|
}
|
|
1145
|
|
|
1146
|
}
|