Develop Reference

Retrieving list of Tags from file properties

I would like to retrieve the list of Tags attached to a file in Windows 7 programatically. I am trying to create a mapping of file->tags that I can move across different platforms.
Is anyone aware of a library, or a way to get the 'Tags' values from command line? So far I have only been able to find ways to get basic file attributes such as Author, Date Created, etc.
I am unable to load PowerShell scripts on the computer unfortunately so am not able to make use of those features.
I tried using 'UserDefinedFileAttributeView' but that did not return any values, like so:
private LinkedList<String> windowsGetAllFileTags(File file) {
UserDefinedFileAttributeView fileAttributeView = Files.getFileAttributeView(file.toPath().toAbsolutePath(), UserDefinedFileAttributeView.class);
List<String> allAttributes = null;
try {
allAttributes = fileAttributeView.list();
} catch (IOException e) {
e.printStackTrace();
}
for(String attribute : allAttributes) {
System.out.println("Attribute = " + attribute);
}
return null;
}
An image of the Windows 7 Properties View

There is a Java library written and called as PE/COFF 4J on Github.
import java.io.IOException;
import org.boris.pecoff4j.PE;
import org.boris.pecoff4j.ResourceDirectory;
import org.boris.pecoff4j.ResourceEntry;
import org.boris.pecoff4j.constant.ResourceType;
import org.boris.pecoff4j.io.PEParser;
import org.boris.pecoff4j.io.ResourceParser;
import org.boris.pecoff4j.resources.StringFileInfo;
import org.boris.pecoff4j.resources.StringTable;
import org.boris.pecoff4j.resources.VersionInfo;
import org.boris.pecoff4j.util.ResourceHelper;
public class Main {
public static void main(String[] args) throws IOException {
PE pe = PEParser.parse("C:/windows/system32/notepad.exe");
ResourceDirectory rd = pe.getImageData().getResourceTable();
ResourceEntry[] entries = ResourceHelper.findResources(rd, ResourceType.VERSION_INFO);
for (int i = 0; i < entries.length; i++) {
byte[] data = entries[i].getData();
VersionInfo version = ResourceParser.readVersionInfo(data);
StringFileInfo strings = version.getStringFileInfo();
StringTable table = strings.getTable(0);
for (int j = 0; j < table.getCount(); j++) {
String key = table.getString(j).getKey();
String value = table.getString(j).getValue();
System.out.println(key + " = " + value);
}
}
}
}
Will print:
CompanyName = Microsoft Corporation
FileDescription = Notepad
FileVersion = 6.1.7600.16385 (win7_rtm.090713-1255)
InternalName = Notepad
LegalCopyright = © Microsoft Corporation. All rights reserved.
OriginalFilename = NOTEPAD.EXE
ProductName = Microsoft® Windows® Operating System
ProductVersion = 6.1.7600.16385
If you mention of obtaining tags of images or videos, #Drew Noakes has written Java library called as metadata-extractor for it.
Metadata metadata = ImageMetadataReader.readMetadata(imagePath);
To iterate all values in the file:
for (Directory directory : metadata.getDirectories()) {
for (Tag tag : directory.getTags()) {
System.out.println(tag);
}
}
You can also read specific values from specific directories:
// obtain the Exif SubIFD directory
ExifSubIFDDirectory directory
= metadata.getFirstDirectoryOfType(ExifSubIFDDirectory.class);
// query the datetime tag's value
Date date = directory.getDate(ExifSubIFDDirectory.TAG_DATETIME_ORIGINAL);
The library is available for Maven users too.

In Windows PowerShell, you could grab it with a bit of help from PresentationCore.dll:
function Get-ImageTags {
param(
[string]$Path
)
Add-Type -AssemblyName PresentationCore
try {
$FileStream = (Get-Item $Path).Open('Open','Read')
$BitmapFrame = [System.Windows.Media.Imaging.BitmapFrame]::Create($FileStream)
$Tags = #($BitmapFrame.Metadata.Keywords |%{ $_ })
}
catch {
throw
return
}
finally {
if($FileStream){
$FileStream.Dispose()
}
}
return $Tags
}
Then use like:
$Tags = Get-ImageTags -Path path\to\file.jpeg
The $Tags variable will now contain an array of tags

what about Files.getAttribute
I didn't tried that but probably this could work:
Files.getAttribute(Paths.get("/some/dir","file.txt"), "description:tags")

My Folder Migration keeps on failing in Documentum using DFCs

I am working on a JavaFx project connected to Documentum data storage . And I am trying to configure how to move a folder (lets call it folder11) placed in a folder (lets call it Folder1) into another folder (lets call it Folder2) . It's worth mentioning that both of the Folders are in the same cabinet . I have implemented the following class :
package application;
import com.documentum.com.DfClientX;
import com.documentum.com.IDfClientX;
import com.documentum.fc.client.DfClient;
import com.documentum.fc.client.IDfDocument;
import com.documentum.fc.client.IDfFolder;
import com.documentum.fc.client.IDfSession;
import com.documentum.fc.common.DfException;
import com.documentum.fc.common.DfId;
import com.documentum.operations.IDfMoveNode;
import com.documentum.operations.IDfMoveOperation;
public class Migrate {
public Migrate(){}
public String move ( IDfSession mySession,String docId, String destination){
String str ="";
try{
IDfClientX clientx = new DfClientX();
IDfMoveOperation mo = clientx . getMoveOperation();
IDfFolder destinationDirectory = mySession . getFolderByPath(destination);
mo.setDestinationFolderId(destinationDirectory . getObjectId());
IDfFolder doc = (IDfFolder) mySession . getObject(new DfId(docId));
//System.out.println(doc); The output is : com.documentum.fc.client.DfFolder___PROXY#ec9178
//System.out.println(mo.execute); output is : true
IDfMoveNode node = (IDfMoveNode)mo.add(doc);
// System.out.println(node); the output : com.documentum.operations.nodes.impl.DfMoveNode#1ad8a67
//System.out.println(mo.execute); output is : false
if (!mo.execute()) {
str= "Move operation faild . ";
}
else {
str = "Move operation success . ";
}
}catch(DfException e){
System.out.println(e.getLocalizedMessage());
}catch(Exception e){
System.out.println(e.getLocalizedMessage());
}
return str;
}
}
And here is how I call it :
Migrate test = new Migrate();
System.out.println(test.move(_session, "0b01b66980028599" ,"Cabinet/LEXOPEDIA/Sateri/Hong Kong" ));
But the problem is no matter what mo.execute always return false and the migration always fails . Does any one know where my mistake is ? :)

Do you have correct / adequate permissions for that action?
It seems that you don't call setSourceFolderId(). Check it out.
Also, try to use this concept to check for errors:
private void doMoveOp(ArrayList objList, IDfFolder fromFolder, IDfFolder toFolder ) {
try {
// #1 - manufacture an operation
IDfMoveOperation moveOpObj = cx.getMoveOperation();
// #2 - add objects to the operation for processing
for (IDfSysObject sObj : objList) {
moveOpObj.add(sObj);
}
// #3 - set the source and target folder
moveOpObj.setDestinationFolderId(toFolder.getObjectId());
moveOpObj.setSourceFolderId(fromFolder.getObjectId());
// #4 - execute the operation
boolean result = moveOpObj.execute();
// #5 - check for errors
if (!result) {
IDfList errors = moveOpObj.getErrors();
for (int i=0; i<errors.getCount(); i++) {
IDfOperationError err = (IDfOperationError) errors.get(i);
System.out.println("Error in Move operation: " + err.getErrorCode() + " - " + err.getMessage());
}
} else {
// #6 - get new obj ids
IDfList newObjs = moveOpObj.getObjects();
for (int i=0; i<newObjs.getCount(); i++) {
IDfSysObject sObj = (IDfSysObject) newObjs.get(i);
System.out.println("\tmoved object " + sObj.getObjectId().toString());
}
}
} catch(Exception e) {
System.out.println("Exception in Move operation: " + e.getMessage());
e.printStackTrace();
}
}

Configuring analyzer in elastic search

I wrote below program to understand how elastic search could be used to do full text search. Here when I search for individual words it works right but I want to search for combinations of words and that is not working.
package in.blogspot.randomcompiler.elastic_search_demo;
import in.blogspot.randomcompiler.elastic_search_impl.Event;
import java.util.Date;
import org.elasticsearch.action.count.CountRequestBuilder;
import org.elasticsearch.action.count.CountResponse;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.index.query.FilterBuilder;
import org.elasticsearch.index.query.FilterBuilders;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import com.fasterxml.jackson.core.JsonProcessingException;
public class ElasticSearchDemo
{
public static void main( String[] args ) throws JsonProcessingException
{
Client client = new TransportClient()
.addTransportAddress(new InetSocketTransportAddress("localhost", 9301));
DeleteResponse deleteResponse1 = client.prepareDelete("chat-data", "event", "1").execute().actionGet();
DeleteResponse deleteResponse2 = client.prepareDelete("chat-data", "event", "2").execute().actionGet();
DeleteResponse deleteResponse3 = client.prepareDelete("chat-data", "event", "3").execute().actionGet();
Event e1 = new Event("LOGIN", new Date(), "Agent1 logged into chat");
String e1Json = e1.prepareJson();
System.out.println("JSON: " + e1Json);
IndexResponse indexResponse1 = client.prepareIndex("chat-data", "event", "1").setSource(e1Json).execute().actionGet();
printIndexResponse("e1", indexResponse1);
Event e2 = new Event("LOGOUT", new Date(), "Agent1 logged out of chat");
String e2Json = e2.prepareJson();
System.out.println("JSON: " + e2Json);
IndexResponse indexResponse2 = client.prepareIndex("chat-data", "event", "2").setSource(e2Json).execute().actionGet();
printIndexResponse("e2", indexResponse2);
Event e3 = new Event("BREAK", new Date(), "Agent1 went on break in the middle of a chat");
String e3Json = e3.prepareJson();
System.out.println("JSON: " + e3Json);
IndexResponse indexResponse3 = client.prepareIndex("chat-data", "event", "3").setSource(e3Json).execute().actionGet();
printIndexResponse("e3", indexResponse3);
FilterBuilder filterBuilder = FilterBuilders.termFilter("value", "break middle");
SearchRequestBuilder searchBuilder = client.prepareSearch();
searchBuilder.setPostFilter(filterBuilder);
CountRequestBuilder countBuilder = client.prepareCount();
countBuilder.setQuery(QueryBuilders.constantScoreQuery(filterBuilder));
CountResponse countResponse1 = countBuilder.execute().actionGet();
System.out.println("HITS: " + countResponse1.getCount());
SearchResponse searchResponse1 = searchBuilder.execute().actionGet();
SearchHits hits = searchResponse1.getHits();
for(int i=0; i<hits.hits().length; i++) {
SearchHit hit = hits.getAt(i);
System.out.println("[" + i + "] " + hit.getId() + " : " +hit.sourceAsString());
}
client.close();
}
private static void printIndexResponse(String description, IndexResponse response) {
System.out.println("Index response for: " + description);
System.out.println("Index name: " + response.getIndex());
System.out.println("Index type: " + response.getType());
System.out.println("Index id: " + response.getId());
System.out.println("Index version: " + response.getVersion());
}
}
The issue I am facing is that when I search for "break middle" it returns nothing, expectation is that it should return the 3rd event.
I understand that I need to configure a different analyzer rather the default one to make it index appropriately.
Could someone please help me in understanding how to do that. Some complete example would to great to have.

The problem is caused because you are using the Term filter:
FilterBuilder filterBuilder = FilterBuilders.termFilter("value", "break middle");
A Term filter doesn't analyse the data in the query string - so Elasticsearch is looking for the exact string "break middle".
However the third document will probably have been broken down by ES into individual terms as follows:
Agent1
went
on
break
in
the
middle
of
a
chat
to fix the issue, use a filter or query that analyses the string you're passing - for example use a Query_String query or Match query.
For example:
QueryBuilder qb = QueryBuilders.matchQuery("event", "break middle");
or:
QueryBuilder qb = QueryBuilders.queryString("break middle");
See the Java API documentation for Elasticsearch for more info.

I got error using MapReduce in MongoDB

first of all I using OS windows XP 32-bit, MongoDB as NoSQL DB and Eclipse as editor program. I got an assignment from my school about MapReduce, so I decided to find how many working-age and non-working population using mapreduce. I use this codes to input data and save as Insert.java :
package mongox;
import com.mongodb.BasicDBObject;
import com.mongodb.Mongo;
import com.mongodb.DB;
import com.mongodb.DBCollection;
public class Insert {
public static void main(String[] args) {
try{
Mongo mongox = new Mongo();
DB db = mongox.getDB("DBPublic");
DBCollection koleksi = db.getCollection("lancestorvalley");
BasicDBObject object = new BasicDBObject();
object = new BasicDBObject();
object.put("NIK", "7586930211");
object.put("Name", "Richard Bou");
object.put("Sex", "M");
object.put("Age", "31");
object.put("Blood", "A");
object.put("Status", "Married");
object.put("Education", "Bachelor degree");
object.put("Employment", "Labor");
koleksi.insert(object);
}
catch(Exception e){
System.out.println(e.toString());
}
}
}
I use this code for MapReduce and save as Mapreduce.java :
package mongox;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBObject;
import com.mongodb.MapReduceCommand;
import com.mongodb.MapReduceOutput;
import com.mongodb.Mongo;
public class Mapreduce {
public static void main(String[] args) {
try{
Mongo mongox = new Mongo("localhost", 27017);
DB db = mongox.getDB("DBPublic");
DBCollection koleksi = db.getCollection("lancestorvalley");
String map = "function() { "+
"var category; " +
"if ( this.Age >= 15 && this.Age <=59 ) "+
"category = 'Working-Age Population'; " +
"else " +
"category = 'Non-Working-Age Population'; "+
"emit(category, {Nama: this.Nama});}";
String reduce = "function(key, values) { " +
"var sum = 0; " +
"values.forEach(function(doc) { " +
"sum += 1; "+
"}); " +
"return {data: sum};} ";
MapReduceCommand cmd = new MapReduceCommand(koleksi, map, reduce,
null, MapReduceCommand.OutputType.INLINE, null);
MapReduceOutput out = koleksi.mapReduce(cmd);
for (DBObject o : out.results()) {
System.out.println(o.toString());
}
}
catch(Exception e){
e.printStackTrace();;
}
}
}
I already input 5000 data and when I run the Mapreduce.java the output is :
{ "_id" : "Non-Working-age population" , "value" : { "data" : 41.0}}
{ "_id" : "Working-age Population" , "value" : { "data" : 60.0}}
Is there something wrong with my code in Mapreduce.java? why the output is only like that while the data is about 5000?
Hopefully someone could help me, Thanks before guys

MongoDB docs explicity state the below , which might be cause of un-expected behavior:
Platform Support
Starting in version 2.2, MongoDB does not support Windows XP. Please use a more recent version of Windows to use more recent releases of MongoDB.
Moreover :
MongoDB for Windows 32-bit runs on any 32-bit version of Windows newer than Windows XP. 32-bit versions of MongoDB are only intended for older systems and for use in testing and development systems. 32-bit versions of MongoDB only support databases smaller than 2GB.

Android - getType(int) is undefined for the type Cursor

I am new on mobile development, so I decided to use Phonegap to develop my application. In my app I am using a SQLite plugin, because WebSQL is not attending my necessities. When I try to put one of the files required to use the plugin in my project, Eclipse return me errors in the following function:
public void processResults(Cursor cur, String query_id, String tx_id) {
String result = "[]";
// If query result has rows
if (cur.moveToFirst()) {
JSONArray fullresult = new JSONArray();
String key = "";
int colCount = cur.getColumnCount();
// Build up JSON result object for each row
do {
JSONObject row = new JSONObject();
try {
for (int i = 0; i < colCount; ++i) {
key = cur.getColumnName(i);
// for old Android SDK remove lines from HERE:
if(android.os.Build.VERSION.SDK_INT >= 11)
{
switch(cur.getType (i))
{
case Cursor.FIELD_TYPE_NULL:
row.put(key, null);
break;
case Cursor.FIELD_TYPE_INTEGER:
row.put(key, cur.getInt(i));
break;
case Cursor.FIELD_TYPE_FLOAT:
row.put(key, cur.getFloat(i));
break;
case Cursor.FIELD_TYPE_STRING:
row.put(key, cur.getString(i));
break;
case Cursor.FIELD_TYPE_BLOB:
row.put(key, cur.getBlob(i));
break;
}
}
else // to HERE.
{
row.put(key, cur.getString(i));
}
}
fullresult.put(row);
} catch (JSONException e) {
e.printStackTrace();
}
} while (cur.moveToNext());
result = fullresult.toString();
}
if(query_id.length() > 0)
this.sendJavascript(" SQLitePluginTransaction.queryCompleteCallback('" + tx_id + "','" + query_id + "', " + result + ");");
}
In the line 20 (when we have "switch(cur.getType (i))"), Eclipse returns the following error:
The method getType(int) is undefined for the type Cursor
When I saw this, I tried googling it, and on the Android's documentation says that getType is a Cursor's method.
Here is what this file imports:
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
import android.database.Cursor;
import android.database.sqlite.*;
import android.util.Log;
As don't know Java, I could not figure this out and I haven't found anything on my search, but I may be missing something. I hope someone can help me, thanks

Which version of Android are you targeting? The getType method was added in API 11 (Honeycomb).
You can see this on the right hand side of the header as ('Since: API Level 11') and you may find the 'Filter by API level' box at the top of the reference pages useful.