How to bind mock of final class in Jukito ?
For example :
public final class SomeFinalClass(){
public SomeFinalClass(String someString){
}
}
//Testing class
#Runwith(JukitoRunner.class)
public class TestingClass(){
#Inject
private SomeFinalClass someFinalClassMock;
public static class TestModule extends JukitoModule {
#Override
protected void configureTest() {
// bind(SomeClient.class).in(TestSingleton.class);
}
#Provides
public SomeFinalClass getSomkeFinalClass() {
return Mokito.mock(SomeFinalClass.class); //throws error
}
}
}
Is there a way i can use PowerMockito with JukitoRunner ?
You can mock a final class if you're using Mockito 2. From Mockito 2 Wiki:
Mocking of final classes and methods is an incubating, opt-in feature. It uses a combination of Java agent instrumentation and subclassing in order to enable mockability of these types. As this works differently to our current mechanism and this one has different limitations and as we want to gather experience and user feedback, this feature had to be explicitly activated to be available ; it can be done via the mockito extension mechanism by creating the file src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker containing a single line: mock-maker-inline.
After you created this file, Mockito will automatically use this new engine and one can do :
final class FinalClass {
final String finalMethod() { return "something"; }
}
FinalClass concrete = new FinalClass();
FinalClass mock = mock(FinalClass.class);
given(mock.finalMethod()).willReturn("not anymore");
assertThat(mock.finalMethod()).isNotEqualTo(concrete.finalMethod());
I am trying to override a class DefaultScreenNameValidator that implements ScreenNameValidator interface. For this , I copied the class and put it into another module. One change that I made is in annotation that is as follows:-
#Component(
property = {
"service.ranking:Integer=500"
}
)
I got a successful build using this. But when I tried to deploy the project, I got error as java.lang.NoClassDefFoundError: com/liferay/portal/kernel/security/auth/ScreenNameValidator.Can you suggest me how to eradicate this error. Thanx in advance..
I'm wondering, wouldn't it be better to instead create a module that also implements the ScreenNameValidator interface, and define your custom logic in there? Then you can just simply tell Liferay to use that validator instead of the DefaultScreenNameValidator.
For example, a minimalistic implementation:
import com.liferay.portal.kernel.security.auth.ScreenNameValidator;
import org.osgi.service.component.annotations.Component;
#Component(
immediate = true,
service = ScreenNameValidator.class
)
public class CustomScreenNameValidator implements ScreenNameValidator {
#Override
public boolean validate(long companyId, String screenName) {
// Your custom logic
}
}
make sure you have the dependency to portal-kernel in the build.gradle
dependencies {
compile 'com.liferay.portal:com.liferay.portal.kernel:2.0.0'
I made a screenNameValidator using blade-cli you can see the projet at https://github.com/bruinen/liferay-blade-samples/tree/master/liferay-workspace/modules/blade.screenname.validator
import com.liferay.portal.kernel.security.auth.ScreenNameValidator;
import org.osgi.service.component.annotations.Component;
import java.util.Locale;
#Component(
immediate = true,
property = {"service.ranking:Integer=100"},
service = ScreenNameValidator.class
)
public class CustomScreenNameValidator implements ScreenNameValidator {
#Override
public String getAUIValidatorJS() {
return "function(val) {return !(val.indexOf(\"admin\") !==-1)}";
}
#Override
public String getDescription(Locale locale) {
return "The screenName contains reserved words";
}
#Override
public boolean validate(long companyId, String screenName) {
return !screenName.contains("admin");
}
}
I want to add custom property in WPF DataGridTextColumn,
How i can add custom property, and Bind it from C# code and retrieve it by C# code.
I just got answer for it
First Create
public static class dataGridTag
{
public static readonly DependencyProperty TagProperty = DependencyProperty.RegisterAttached(
"Tag",
typeof(object),
typeof(dataGridTag),
new FrameworkPropertyMetadata(null));
public static object GetTag(DependencyObject dependencyObject)
{
return dependencyObject.GetValue(TagProperty);
}
public static void SetTag(DependencyObject dependencyObject, object value)
{
dependencyObject.SetValue(TagProperty, value);
}
}
For Binding tag property by C#
DataGridTextColumn clm = new DataGridTextColumn();
dataGridTag.SetTag(clm, "TagValue");
For Retrieving tag property by C#
DataGridColumn clm1 = dgQuestionTemplate.CurrentCell.Column as DataGridColumn;
string strQType= dataGridTag.GetTag(clm1).ToString();
How do you reference an constants with EL on a JSP page?
I have an interface Addresses with a constant named URL. I know I can reference it with a scriplet by going: <%=Addresses.URL%>, but how do I do this using EL?
EL 3.0 or newer
If you're already on Java EE 7 / EL 3.0, then the #page import will also import class constants in EL scope.
<%# page import="com.example.YourConstants" %>
This will under the covers be imported via ImportHandler#importClass() and be available as ${YourConstants.FOO}.
Note that all java.lang.* classes are already implicitly imported and available like so ${Boolean.TRUE} and ${Integer.MAX_VALUE}. This only requires a more recent Java EE 7 container server as early versions had bugs in this. E.g. GlassFish 4.0 and Tomcat 8.0.0-1x fails, but GlassFish 4.1+ and Tomcat 8.0.2x+ works. And you need to make absolutely sure that your web.xml is declared conform the latest servlet version supported by the server. Thus with a web.xml which is declared conform Servlet 2.5 or older, none of the Servlet 3.0+ features will work.
Also note that this facility is only available in JSP and not in Facelets. In case of JSF+Facelets, your best bet is using OmniFaces <o:importConstants> as below:
<o:importConstants type="com.example.YourConstants" />
Or adding an EL context listener which calls ImportHandler#importClass() as below:
#ManagedBean(eager=true)
#ApplicationScoped
public class Config {
#PostConstruct
public void init() {
FacesContext.getCurrentInstance().getApplication().addELContextListener(new ELContextListener() {
#Override
public void contextCreated(ELContextEvent event) {
event.getELContext().getImportHandler().importClass("com.example.YourConstants");
}
});
}
}
EL 2.2 or older
This is not possible in EL 2.2 and older. There are several alternatives:
Put them in a Map<String, Object> which you put in the application scope. In EL, map values are accessible the usual Javabean way by ${map.key} or ${map['key.with.dots']}.
Use <un:useConstants> of the Unstandard taglib (maven2 repo here):
<%# taglib uri="http://jakarta.apache.org/taglibs/unstandard-1.0" prefix="un" %>
<un:useConstants className="com.example.YourConstants" var="constants" />
This way they are accessible the usual Javabean way by ${constants.FOO}.
Use Javaranch's CCC <ccc:constantsMap> as desribed somewhere at the bottom of this article.
<%# taglib uri="http://bibeault.org/tld/ccc" prefix="ccc" %>
<ccc:constantsMap className="com.example.YourConstants" var="constants" />
This way they are accessible the usual Javabean way by ${constants.FOO} as well.
If you're using JSF2, then you could use <o:importConstants> of OmniFaces.
<html ... xmlns:o="http://omnifaces.org/ui">
<o:importConstants type="com.example.YourConstants" />
This way they are accessible the usual Javabean way by #{YourConstants.FOO} as well.
Create a wrapper class which returns them through Javabean-style getter methods.
Create a custom EL resolver which first scans the presence of a constant and if absent, then delegate to the default resolver, otherwise returns the constant value instead.
The following does not apply to EL in general, but instead to SpEL (Spring EL) only (tested with 3.2.2.RELEASE on Tomcat 7).
I think it is worth mentioning it here in case someone searches for JSP and EL (but uses JSP with Spring).
<%# taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<spring:eval var="constant" expression="T(com.example.Constants).CONSTANT"/>
You usually place these kinds of constants in a Configuration object (which has getters and setters) in the servlet context, and access them with ${applicationScope.config.url}
You can't. It follows the Java Bean convention. So you must have a getter for it.
I'm defining a constant in my jsp right at the beginning:
<%final String URI = "http://www.example.com/";%>
I include the core taglib in my JSP:
<%#taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
Then, I make the constant available to EL by following statement:
<c:set var="URI" value="<%=URI%>"></c:set>
Now, I can use it later. Here an example, where the value is just written as HTML comment for debugging purposes:
<!-- ${URI} -->
With your constant class, you can just import your class and assign the constants to local variables. I know that my answer is a sort of quick hack, but the question also bumps up when one wants to define constants directly in the JSP.
I implemented like:
public interface Constants{
Integer PAGE_SIZE = 20;
}
-
public class JspConstants extends HashMap<String, String> {
public JspConstants() {
Class c = Constants.class;
Field[] fields = c.getDeclaredFields();
for(Field field : fields) {
int modifier = field.getModifiers();
if(Modifier.isPublic(modifier) && Modifier.isStatic(modifier) && Modifier.isFinal(modifier)) {
try {
Object o = field.get(null);
put(field.getName(), o != null ? o.toString() : null);
} catch(IllegalAccessException ignored) {
}
}
}
}
#Override
public String get(Object key) {
String result = super.get(key);
if(StringUtils.isEmpty(result)) {
throw new IllegalArgumentException("Check key! The key is wrong, no such constant!");
}
return result;
}
}
Next step put instance of this class into servlerContext
public class ApplicationInitializer implements ServletContextListener {
#Override
public void contextInitialized(ServletContextEvent sce) {
sce.getServletContext().setAttribute("Constants", new JspConstants());
}
#Override
public void contextDestroyed(ServletContextEvent sce) {
}
}
add listener to web.xml
<listener>
<listener-class>com.example.ApplicationInitializer</listener-class>
</listener>
access in jsp
${Constants.PAGE_SIZE}
Static properties aren't accessible in EL. The workaround I use is to create a non-static variable which assigns itself to the static value.
public final static String MANAGER_ROLE = 'manager';
public String manager_role = MANAGER_ROLE;
I use lombok to generate the getter and setter so that's pretty well it. Your EL looks like this:
${bean.manager_role}
Full code at https://rogerkeays.com/access-java-static-methods-and-constants-from-el
Yes, you can. You need a custom tag (if you can't find it somewhere else). I've done this:
package something;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Map;
import java.util.TreeMap;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import org.apache.taglibs.standard.tag.el.core.ExpressionUtil;
/**
* Get all class constants (statics) and place into Map so they can be accessed
* from EL.
* #author Tim.sabin
*/
public class ConstMapTag extends TagSupport {
public static final long serialVersionUID = 0x2ed23c0f306L;
private String path = "";
private String var = "";
public void setPath (String path) throws JspException {
this.path = (String)ExpressionUtil.evalNotNull ("constMap", "path",
path, String.class, this, pageContext);
}
public void setVar (String var) throws JspException {
this.var = (String)ExpressionUtil.evalNotNull ("constMap", "var",
var, String.class, this, pageContext);
}
public int doStartTag () throws JspException {
// Use Reflection to look up the desired field.
try {
Class<?> clazz = null;
try {
clazz = Class.forName (path);
} catch (ClassNotFoundException ex) {
throw new JspException ("Class " + path + " not found.");
}
Field [] flds = clazz.getDeclaredFields ();
// Go through all the fields, and put static ones in a Map.
Map<String, Object> constMap = new TreeMap<String, Object> ();
for (int i = 0; i < flds.length; i++) {
// Check to see if this is public static final. If not, it's not a constant.
int mods = flds [i].getModifiers ();
if (!Modifier.isFinal (mods) || !Modifier.isStatic (mods) ||
!Modifier.isPublic (mods)) {
continue;
}
Object val = null;
try {
val = flds [i].get (null); // null for static fields.
} catch (Exception ex) {
System.out.println ("Problem getting value of " + flds [i].getName ());
continue;
}
// flds [i].get () automatically wraps primitives.
// Place the constant into the Map.
constMap.put (flds [i].getName (), val);
}
// Export the Map as a Page variable.
pageContext.setAttribute (var, constMap);
} catch (Exception ex) {
if (!(ex instanceof JspException)) {
throw new JspException ("Could not process constants from class " + path);
} else {
throw (JspException)ex;
}
}
return SKIP_BODY;
}
}
and the tag is called:
<yourLib:constMap path="path.to.your.constantClass" var="consts" />
All public static final variables will be put into a Map indexed by their Java name, so if
public static final int MY_FIFTEEN = 15;
then the tag will wrap this in an Integer and you can reference it in a JSP:
<c:if test="${consts['MY_FIFTEEN'] eq 15}">
and you don't have to write getters!
You can. Try in follow way
#{T(com.example.Addresses).URL}
Tested on TomCat 7 and java6
Even knowing its a little late, and even knowing this is a little hack - i used the following solution to achieve the desired result. If you are a lover of Java-Naming-Conventions, my advice is to stop reading here...
Having a class like this, defining Constants, grouped by empty classes to create kind of a hierarchy:
public class PERMISSION{
public static class PAGE{
public static final Long SEE = 1L;
public static final Long EDIT = 2L;
public static final Long DELETE = 4L;
...
}
}
can be used from within java as PERMISSION.PAGE.SEE to retrieve the value 1L
To achieve a simliar access-possibility from within EL-Expressions, I did this:
(If there is a coding-god - he hopefully might forgive me :D )
#Named(value="PERMISSION")
public class PERMISSION{
public static class PAGE{
public static final Long SEE = 1L;
public static final Long EDIT = 2L;
public static final Long DELETE = 4L;
...
//EL Wrapper
public Long getSEE(){
return PAGE.SEE;
}
public Long getEDIT(){
return PAGE.EDIT;
}
public Long getDELETE(){
return PAGE.DELETE;
}
}
//EL-Wrapper
public PAGE getPAGE() {
return new PAGE();
}
}
finally, the EL-Expression to access the very same Long becomes: #{PERMISSION.PAGE.SEE} - equality for Java and EL-Access. I know this is out of any convention, but it works perfectly fine.
#Bozho already provided a great answer
You usually place these kinds of constants in a Configuration object (which has getters and setters) in the servlet context, and access them with ${applicationScope.config.url}
However, I feel an example is needed so it brings a bit more clarity and spare someone's time
#Component
public Configuration implements ServletContextAware {
private String addressURL = Addresses.URL;
// Declare other properties if you need as also add corresponding
// getters and setters
public String getAddressURL() {
return addressURL;
}
public void setServletContext(ServletContext servletContext) {
servletContext.setAttribute("config", this);
}
}
There is a workaround that is not exactly what you want, but lets you active almost the same with touching scriptlets in a quite minimal way. You can use scriptlet to put value into a JSTL variable and use clean JSTL code later in the page.
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%# page import="com.whichever.namespace.Addresses" %>
<c:set var="ourUrl" value="<%=Addresses.URL%>"/>
<c:if test='${"http://www.google.com" eq ourUrl}'>
Google is our URL!
</c:if>
If I'm trying to serialize a normal CLR object, and I do not want a particular member variable to be serialized, I can tag it with the
[NonSerialized]
attribute. If I am creating a table services entity, is there an equivalent attribute I can use to tell Azure table services to ignore this property?
For Version 2.1 there is a new Microsoft.WindowsAzure.Storage.Table.IgnoreProperty attribute. See the 2.1 release notes for more information: http://blogs.msdn.com/b/windowsazurestorage/archive/2013/09/07/announcing-storage-client-library-2-1-rtm.aspx.
There's no equivalent I know of.
This post says how you can achieve the desired effect - http://blogs.msdn.com/b/phaniraj/archive/2008/12/11/customizing-serialization-of-entities-in-the-ado-net-data-services-client-library.aspx
Alternatively, if you can get away with using "internal" rather than "public" on your property then it will not get persisted with the current SDK (but this might change in the future).
For version 2.0 of the Table Storage SDK there is a new way to achieve this.
You can now override the WriteEntity method on TableEntity and remove any entity properties that have an attribute on them. I derive from a class that does this for all my entities, like:
public class CustomSerializationTableEntity : TableEntity
{
public CustomSerializationTableEntity()
{
}
public CustomSerializationTableEntity(string partitionKey, string rowKey)
: base(partitionKey, rowKey)
{
}
public override IDictionary<string, EntityProperty> WriteEntity(Microsoft.WindowsAzure.Storage.OperationContext operationContext)
{
var entityProperties = base.WriteEntity(operationContext);
var objectProperties = this.GetType().GetProperties();
foreach (PropertyInfo property in objectProperties)
{
// see if the property has the attribute to not serialization, and if it does remove it from the entities to send to write
object[] notSerializedAttributes = property.GetCustomAttributes(typeof(NotSerializedAttribute), false);
if (notSerializedAttributes.Length > 0)
{
entityProperties.Remove(property.Name);
}
}
return entityProperties;
}
}
[AttributeUsage(AttributeTargets.Property)]
public class NotSerializedAttribute : Attribute
{
}
Then you can make use of this class for your entities like
public class MyEntity : CustomSerializationTableEntity
{
public MyEntity()
{
}
public string MySerializedProperty { get; set; }
[NotSerialized]
public List<string> MyNotSerializedProperty { get; set; }
}