1. Mark the &quot;target&quot; folders as &quot;derived&quot; resource from the properties screen of those folders (this option is next to read only and archive property). 

2. In the quick search (&lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;Shift&lt;/kbd&gt;+&lt;kbd&gt;R&lt;/kbd&gt;) screen press the arrow in the top right corner and untick &quot;Show derived resources&quot;.

Then those target-files will not be considered in the quick search anymore.

# Go to _Add Resource Filter_ preferences dialog: #
Go to `Project` → `Properties` → `Resource` → `Resource Filters`

Click `Add Filter...`

# Then fill the options: #

### Filter type: ###
`(`**`•`**`)`_Exclude all_

### Applies to: ###

`(`**`•`**`)`_Folders_

`[`**`X`**`]` _All children (recursive)_ 

### Filter and Folder Attributes: ###

`Name` - `Matches` - `[`_target_`]`

You can install **AutoDeriv plugin** from Eclipse Marketplace or http://nodj.github.io/AutoDeriv/. It allows you to create either global(workspace) or per-project `.derived` files in which you can specify which files/folders should be marked as derived.

Here&#39;s a sample config file (taken from plugin&#39;s homepage):

    # set the &#39;target&#39; and &#39;ext&#39; folders as derived
    target
    ext
    # but don&#39;t affect the &#39;keep&#39; sub-folder
    !target/keep
    # all files with a &#39;.dep&#39; extension are generated
    *.dep
    src/include/version.h # this specific file is also generated.

New to TeamCity.  I have multiple build steps.  Step 3 generates an id that is needed in step 4.  What is the best way to pass the id (a string) between step 3 and step 4?  The build steps are written in Ruby.  Can I set an environment variable?

TeamCity, passing an id generated in one build step to a later build step

    import matplotlib.pyplot as plt
    from mpl_toolkits.mplot3d import Axes3D

Setting the aspect ratio works for 2d plots:

    ax = plt.axes()
    ax.plot([0,1],[0,10])
    ax.set_aspect(&#39;equal&#39;,&#39;box&#39;)

But does not for 3d:

    ax = plt.axes(projection=&#39;3d&#39;)
    ax.plot([0,1],[0,1],[0,10])
    ax.set_aspect(&#39;equal&#39;,&#39;box&#39;)

Is there a different syntax for the 3d case, or it&#39;s not implemented?



set matplotlib 3d plot aspect ratio

I was wondering if it&#39;s possible to **exclude target** folder from **eclipse quick search** :

&lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;Shift&lt;/kbd&gt;+&lt;kbd&gt;R&lt;/kbd&gt; 


If anyone knows how to do that, please advise.

Update: I am using **Maven 2**, and **M2E** , **WTP** Eclipse plug-ins.

Exclude target folder from search results in Eclipse

I was wondering if it's possible to exclude target folder from eclipse quick search :
<kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>R</kbd>
If anyone knows how to do that, please advise.
Update: I am using Maven 2, and M2E , WTP Eclipse plug-ins.

I have created a new android project. I want to have a action bar at the top so I downloaded the [**Action Bar for Android Library**][1] because I want to support devices from android 2.1.

The description says

&gt; The action bar component is an Library Project. This means that there&#39;s no need to 
copy-paste resources into your own project, simply
&gt; add the action bar component as a reference to any project.

I am new to android so what does this mean? How can I add the library to my existing project?

Import the library into your eclipse workspace:

    

 - File-&gt;Import-&gt;General-&gt;Existing Projects into Workspace, Next
 
 - Select root directory: /path/to/project

 - Projects-&gt;Select All

At this point it fails because there is nothing to select and the next button is deactivated.

Any ideas?

  [1]: https://github.com/johannilsson/android-actionbar

How to add a Library Project to a android project?

I am trying to map my Visual Studio experience onto Eclipse. Right now, I wish to add a file existing somewhere on the file system into a project in Eclipse. I expect it to be copied to the project source folder.

Currently, I see only one way - switch to the windows explorer (total commander, in my case) and copy the file myself, after which to refresh the project.

Can I do the same without leaving the Eclipse IDE?

Thanks.

Is there an equivalent of &quot;Add existing file&quot; (to project) in Eclipse?

How to debug EL in the JSF page? I&#39;d like to watch variable values, function calls an so on. The best solution would be an eclipse plugin, but any other possibility is better than guessing &quot;Why this expression failed to render correctly?&quot;.

how to debug JSF/EL

So I will be using Java Web Start to deploy the java application. When exporting to a Runnable Jar, there are three options in eclipse Helios.

 - Extract required libraries into JAR
 - Package required libraries into JAR
 - Copy required libraries into sub folder next to JAR.

What are differences, and how will they affect my .jnlp file?

If it&#39;s a single jar, isn&#39;t it easier because I wouldn&#39;t have to write all the different paths to all the libraries it uses?

If there are changes in both the library and the application, a single jar would be a better solution? Or would I need `&lt;jar href=&#39;&#39;&gt;` for each individual libraries?

Also note that I need to make use of native libraries like .dll and .so files.

What is the difference between runnable jar library handling options?

I&#39;m setting up a new dev machine with Eclipse 3.7 Indigo.  After pulling a my code down from SVN, the source tree in the Package Explorer is intermittently littered with a &gt; to the left of the file name  The parent package names have them too.  *(Note that this is an AspectJ project, but I don&#39;t think that matters.)*

![Package Explorer][1]

**What does the &gt; indicate in the Eclipse Package Manager?**


  [1]: http://i.stack.imgur.com/xUqdD.png

What does the &gt; (greater than bracket) mean beside file names in Eclipse&#39;s Package Explorer?

I have the following in a Question entity:

    @NamedQuery(name = &quot;Question.allApproved&quot;,
        query = &quot;SELECT q FROM Question q WHERE q.status = &#39;APPROVED&#39;&quot;)

and

	@Enumerated(EnumType.STRING)
	private Status status;

	// usual accessors

I am getting this exception:


&gt; Exception Description: Error compiling the query
&gt; [Question.countApproved: `SELECT COUNT(q) FROM Question q WHERE q.status = &#39;APPROVED&#39;`], line 1, column 47: invalid enum equal
&gt; expression, cannot compare enum value of type
&gt; `[myCompnay.application.Status]` with a non enum value
&gt; of type `[java.lang.String]`. 	at
&gt; org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:501)

How do I fix this?



Problems with making a query when using Enum in entity

I am using JDK 1.7, Apache Tomcat 7.0.23 and I have placed JSTL core library(1.2) and STANDARD jar in WEB_INF lib folder it is not giving me any warning but when I will try to run the code 

&lt;!-- language: lang-html --&gt;

    &lt;%@ taglib uri=&quot;http://java.sun.com/jsp/jstl/core&quot; prefix=&quot;c&quot; %&gt;
    &lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD HTML 4.01 Transitional//EN&quot; &quot;http://www.w3.org/TR/html4/loose.dtd&quot;&gt;
    &lt;!-- Create Bean Instance--&gt;
    &lt;jsp:useBean id=&quot;listdomain&quot; class=&quot;bean.PopulateMultiDomain&quot; scope=&quot;session&quot;&gt;&lt;/jsp:useBean&gt;
    
    &lt;jsp:setProperty property=&quot;*&quot; name=&quot;listdomain&quot;/&gt;
    
    &lt;c:forEach var=&quot;item&quot; items=&quot;${listdomain.status}&quot;&gt;
        &lt;option&gt;
            &lt;c:out value=&quot;${item}&quot; /&gt;
        &lt;/option&gt;
    &lt;/c:forEach&gt; 

it gives me the following error:

&lt;!-- language: none --&gt;

    org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
    	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:56)
    	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:410)
    	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:117)
    	org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:311)
    	org.apache.jasper.compiler.TagLibraryInfoImpl.&lt;init&gt;(TagLibraryInfoImpl.java:152)
    	org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:410)
    	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:475)
    	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1425)
    	org.apache.jasper.compiler.Parser.parse(Parser.java:138)
    	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242)
    	org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)
    	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)
    	org.apache.jasper.compiler.Compiler.compile(Compiler.java:373)
    	org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
    	org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
    	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
    	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
    	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

Can anyone suggest me what mistake I am making?

The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

i was wondering if it&#39;s possible to configure run as maven install in eclipse to skip unit tests, if such thing is doable, then please tell me how to do it, thanks in advance.

How to configure maven install to skip tests in eclipse?

I am new to hibernate and need to use one-to-many and many-to-one relations. It is a bi-directional relationship in my objects, so that I can traverse from either direction. `mappedBy` is the recommended way to go about it, however, I couldn&#39;t understand it. Can someone explain:

- what is the recommended way to use it?
- what purpose does it solve?

For the sake of my example, here are my classes with annotations:

- `Airline` **OWNS many** `AirlineFlights`
- **Many** `AirlineFlights` belong to **ONE** `Airline`

**Airline**:

    @Entity 
    @Table(name=&quot;Airline&quot;)
    public class Airline {
    	private Integer idAirline;
    	private String name;

    	private String code;
    	
    	private String aliasName;
    	private Set&lt;AirlineFlight&gt; airlineFlights = new HashSet&lt;AirlineFlight&gt;(0);
    	
    	public Airline(){}
    	
    	public Airline(String name, String code, String aliasName, Set&lt;AirlineFlight&gt; flights) {
    		setName(name);
    		setCode(code);
    		setAliasName(aliasName);
    		setAirlineFlights(flights);
    	}
    
    	@Id
    	@GeneratedValue(strategy=GenerationType.IDENTITY)
    	@Column(name=&quot;IDAIRLINE&quot;, nullable=false)
    	public Integer getIdAirline() {
    		return idAirline;
    	}
    	
    	private void setIdAirline(Integer idAirline) {
    		this.idAirline = idAirline;
    	}
    	
    	@Column(name=&quot;NAME&quot;, nullable=false)
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = DAOUtil.convertToDBString(name);
    	}
    	
    	@Column(name=&quot;CODE&quot;, nullable=false, length=3)
    	public String getCode() {
    		return code;
    	}
    	public void setCode(String code) {
    		this.code = DAOUtil.convertToDBString(code);
    	}
    	
    	@Column(name=&quot;ALIAS&quot;, nullable=true)
    	public String getAliasName() {
    		return aliasName;
    	}
    	public void setAliasName(String aliasName) {
    		if(aliasName != null)
    			this.aliasName = DAOUtil.convertToDBString(aliasName);
    	}
    
    	@OneToMany(fetch=FetchType.LAZY, cascade = {CascadeType.ALL})
    	@JoinColumn(name=&quot;IDAIRLINE&quot;)
    	public Set&lt;AirlineFlight&gt; getAirlineFlights() {
    		return airlineFlights;
    	}
    
    	public void setAirlineFlights(Set&lt;AirlineFlight&gt; flights) {
    		this.airlineFlights = flights;
    	}
    }

**AirlineFlights:**

    @Entity
    @Table(name=&quot;AirlineFlight&quot;)
    public class AirlineFlight {
    	private Integer idAirlineFlight;
    	private Airline airline;
    	private String flightNumber;
    	
    	public AirlineFlight(){}
    	
    	public AirlineFlight(Airline airline, String flightNumber) {
    		setAirline(airline);
    		setFlightNumber(flightNumber);
    	}
    
    	@Id
    	@GeneratedValue(generator=&quot;identity&quot;)
    	@GenericGenerator(name=&quot;identity&quot;, strategy=&quot;identity&quot;)
    	@Column(name=&quot;IDAIRLINEFLIGHT&quot;, nullable=false)
    	public Integer getIdAirlineFlight() {
    		return idAirlineFlight;
    	}
    	private void setIdAirlineFlight(Integer idAirlineFlight) {
    		this.idAirlineFlight = idAirlineFlight;
    	}
    	
    	@ManyToOne(fetch=FetchType.LAZY)
    	@JoinColumn(name=&quot;IDAIRLINE&quot;, nullable=false)
    	public Airline getAirline() {
    		return airline;
    	}
    	public void setAirline(Airline airline) {
    		this.airline = airline;
    	}
    	
    	@Column(name=&quot;FLIGHTNUMBER&quot;, nullable=false)
    	public String getFlightNumber() {
    		return flightNumber;
    	}
    	public void setFlightNumber(String flightNumber) {
    		this.flightNumber = DAOUtil.convertToDBString(flightNumber);
    	}
    }

**EDIT:**

Database schema:

AirlineFlights has the idAirline as ForeignKey and Airline has no idAirlineFlights. This makes, AirlineFlights as the owner/identifying entity ?

Theoretically, I would like airline to be the owner of airlineFlights.

![enter image description here][1]


  [1]: https://i.stack.imgur.com/gQvDs.png

Can someone explain mappedBy in JPA and Hibernate?

Is it possible to set up a JAX-RS application using annotations only? (using Servlet 3.0 and JAX-RS Jersey 1.1.0)

I tried and had no luck. Using some `web.xml` seems required.

----------

**Configuration A (working, but has web.xml configuration)**

web.xml

&lt;!-- language: xml --&gt;

       ...
       &lt;servlet&gt;
          &lt;servlet-name&gt;org.foo.rest.MyApplication&lt;/servlet-name&gt;
       &lt;/servlet&gt;
       &lt;servlet-mapping&gt;
           &lt;servlet-name&gt;org.foo.rest.MyApplication&lt;/servlet-name&gt;
           &lt;url-pattern&gt;/*&lt;/url-pattern&gt;
       &lt;/servlet-mapping&gt;
       ...

Java

    @ApplicationPath(&quot;/&quot;)
    public class MyApplication extends Application {
    	...
    }


----------


**Configuration B (not working, exception thrown)**

    @ApplicationPath(&quot;/&quot;)
    @WebServlet(&quot;/*&quot;) // &lt;-- 
    public class MyApplication extends Application {
    	...
    }

The latter seems to insist that the Application will be a subclass of Servlet (the exception leaves no guesswork)

    java.lang.ClassCastException: org.foo.rest.MyApplication cannot be cast to javax.servlet.Servlet


----------


**Questions**

 1. Why the web.xml definition worked but the annotation didn&#39;t? What&#39;s the difference?

 2. Is there a way to have it worked, e.g. have a JAX-RS Application with no web.xml?

How to set up JAX-RS Application using annotations only (no web.xml)?

I&#39;ve added a new dependency to my POM.

Is there a simple command I can run to download this dependency to my repository?

Maven: Command to update repository after adding dependency to POM

Currently we specify the location of local repository in the settings.xml. Is it possible to override this setting via command line or env variable, such that I can use an alternative location sometimes?

maven: Is it possible to override location of local repository via the use of command line option or env variable?

In my maven project I have a number of modules. Is it possible to turn off running unit test for some modules via command line options? 

My project takes about 15 mins to run through all unit tests. I would like to speed up the overall build by running just the unit tests in the module I am working on. I do not want to go in and edit each individual pom.xml to achieve this.

I have tried a solution outlined here: [https://stackoverflow.com/questions/2922581/can-i-run-a-specific-testng-test-group-via-maven][1] However the result is a lot of test failures in modules that I want to skip. I suppose &#39;group&#39; is not the same concept of module?


  [1]: https://stackoverflow.com/questions/2922581/can-i-run-a-specific-testng-test-group-via-maven

maven: How can I skip test in some projects via command line options?

I have a parent POM in a Maven project, with this structure:

                 parent
                   |
            ---------------
            |             |
          child1       child2


I want to install the POM of the *&quot;parent&quot;* in the local REPO to allow *child1* take some changes that I did in the dependencyManagement, but **I cannot do a regular &quot;clean install&quot;** because *&quot;child2&quot;* is broken and will not build.

Which is the proper way to do this with maven (other than going to the parent pom and commenting the *&quot;child2&quot;* module).



Install parent POM without building Child modules

In addition to the src/main/java, I am adding a src/bootstrap directory that I want to include in my build process, in other words, I want maven to compile and include the sources there in my build. How!?

Content Type	Original Author	Original Content on Stackoverflow
Question	Mahmoud Saleh	View Question on Stackoverflow
Solution 1 - Eclipse	Chris	View Answer on Stackoverflow
Solution 2 - Eclipse	nilan59	View Answer on Stackoverflow
Solution 3 - Eclipse	Dariusz	View Answer on Stackoverflow

Exclude target folder from search results in Eclipse

Eclipse Problem Overview

Eclipse Solutions

Solution 1 - Eclipse

Solution 2 - Eclipse

Go to Add Resource Filter preferences dialog:

Then fill the options:

Filter type:

Applies to:

Filter and Folder Attributes:

Solution 3 - Eclipse

set matplotlib 3d plot aspect ratio

TeamCity, passing an id generated in one build step to a later build step

Attributions