/**
* cr-U-d
*
* @param key
* @param value
* @param docId
* @return success or failure
*/
public boolean update(final String key, final Object value, String docId) {
if (database == null) {
Log.e("DatabaseWrapper", "database is null : DatabaseWrapper.update");
return false;
}
// update the document
try {
Document doc = database.getDocument(docId);
// this alternative way is better for handling write conflicts
doc.update(
new Document.DocumentUpdater() {
@Override
public boolean update(UnsavedRevision newRevision) {
Map<String, Object> properties = newRevision.getUserProperties();
properties.put(key, value);
newRevision.setUserProperties(properties);
return true;
}
});
/* Map<String, Object> docContent = doc.getProperties();
//Working on a copy
Map<String, Object> updatedContent = new HashMap<String, Object>();
updatedContent.putAll(docContent);
updatedContent.put(key, value);
doc.putProperties(updatedContent);*/
} catch (CouchbaseLiteException e) {
e.printStackTrace();
return false;
}
return true;
}
public DatabaseWrapper(String dbname, Context context) {
this.context = context;
/* Manages access to databases */
try {
manager = new Manager(new AndroidContext(context), Manager.DEFAULT_OPTIONS);
} catch (IOException e) {
e.printStackTrace();
return;
}
// create a name for the database and make sure the name is legal
// Only the following characters are valid:
// abcdefghijklmnopqrstuvwxyz0123456789_$()+-/
if (!Manager.isValidDatabaseName(dbname)) {
Log.e("DatabaseWrapper", "Invalid database name: '" + dbname + "'");
return;
}
// get existing db with that name
// or create a new one if it doesn't exist
try {
database = manager.getDatabase(dbname);
} catch (CouchbaseLiteException e) {
e.printStackTrace();
return;
}
}
/**
* Write an Attachment for a given Document
*
* @param docId
* @param attachName
* @param mimeType e.g. "image/jpeg"
* @param in
*/
public void writeAttachment(String docId, String attachName, String mimeType, InputStream in) {
try {
Document doc = database.getDocument(docId);
UnsavedRevision newRev = doc.getCurrentRevision().createRevision();
newRev.setAttachment(attachName, mimeType, in);
newRev.save();
} catch (CouchbaseLiteException e) {
e.printStackTrace();
}
}
@Kroll.method
public SavedRevisionProxy save(@Kroll.argument(optional = true) boolean allowConflict) {
lastError = null;
try {
SavedRevision saved = ((UnsavedRevision) revision).save(allowConflict);
return new SavedRevisionProxy(documentProxy, saved);
} catch (CouchbaseLiteException e) {
lastError = TitouchdbModule.convertStatusToErrorDict(e.getCBLStatus());
}
return null;
}
public FeedAdapter(Context context, final LiveQuery query) {
this.context = context;
this.query = query;
try {
enumerator = query.run();
} catch (CouchbaseLiteException e) {
e.printStackTrace();
}
query
.getDatabase()
.addChangeListener(
new Database.ChangeListener() {
@Override
public void changed(final Database.ChangeEvent event) {
((Activity) FeedAdapter.this.context)
.runOnUiThread(
new Runnable() {
@Override
public void run() {
if (event.isExternal() == true) {
try {
enumerator = query.run();
} catch (CouchbaseLiteException e) {
e.printStackTrace();
}
for (DocumentChange change : event.getChanges()) {
int i = 0;
while (enumerator.hasNext()) {
QueryRow row = enumerator.next();
if (row.getDocumentId().equals(change.getDocumentId())) {
notifyItemChanged(i);
}
i++;
}
}
}
}
});
}
});
// query.addChangeListener(new LiveQuery.ChangeListener() {
// @Override
// public void changed(final LiveQuery.ChangeEvent event) {
// ((Activity) FeedAdapter.this.context).runOnUiThread(new Runnable() {
// @Override
// public void run() {
// if (event)
// enumerator = event.getRows();
// notifyDataSetChanged();
// }
// });
// }
// });
}
/**
* Remove an Attachment from a Document
*
* @param docId
* @param attachName
*/
public void deleteAttachment(String docId, String attachName) {
try {
Document doc = database.getDocument(docId);
UnsavedRevision newRev = doc.getCurrentRevision().createRevision();
newRev.removeAttachment(attachName);
// (You could also update newRev.properties while you're here)
newRev.save();
} catch (CouchbaseLiteException e) {
e.printStackTrace();
}
}
/**
* C-rud
*
* @param docContent
* @return docId
*/
public String create(Map<String, Object> docContent, String docId) {
if (database == null) {
Log.e("DatabaseWrapper", "database is null : DatabaseWrapper.create(" + ")");
return "";
}
// create an empty document
Document doc = database.getDocument(docId);
// .createDocument();
// add content to document and write the document to the database
try {
doc.putProperties(docContent);
} catch (CouchbaseLiteException e) {
e.printStackTrace();
return "";
}
return doc.getId();
}
/**
* cru-D
*
* @param docId
* @return
*/
public boolean delete(String docId) {
if (database == null) {
Log.e("DatabaseWrapper", "database is null : DatabaseWrapper.delete(" + docId + ")");
return false;
}
Document doc = null;
// delete the document
try {
if (!database.isOpen()) {
database.open();
}
doc = database.getExistingDocument(docId);
if (doc != null) {
doc.delete();
}
} catch (CouchbaseLiteException e) {
e.printStackTrace();
}
if (doc != null) {
return doc.isDeleted();
}
return false;
}
