org.apache.velocity.util.introspection.VelPropertyGet Java Examples

public VelPropertyGet getPropertyGet(Object obj, String identifier, Info i) throws Exception
{
  AbstractExecutor executor;
  if (obj == null)
  { throw new VelocityParsingError("tried " + getPropertyText("null", identifier), i); }
  Class<? extends Object> claz = obj.getClass();
  // trying getFoo()
  executor = new PropertyExecutor(log, introspectorWithLog, claz, identifier);
  if (!executor.isAlive())
  {
    // trying  get("foo")
    executor = new GetExecutor(log, introspectorWithLog, claz, identifier);
  }
  if (!executor.isAlive())
  {
    // trying  isFoo()
    executor = new BooleanPropertyExecutor(log, introspectorWithLog, claz, identifier);
  }
  if (!executor.isAlive())
  { throw new VelocityParsingError("Did not find " + getPropertyText(obj.getClass().getName(), identifier), i); }
  return new VelGetterImpl(executor);
}
 

/**
 * Property getter
 * @param obj target object
 * @param identifier property key
 * @param i tool info
 * @return A Velocity Getter Method.
 */
public VelPropertyGet getPropertyGet(Object obj, String identifier, Info i)
{
    if (obj == null)
    {
        return null;
    }
    VelPropertyGet ret = super.getPropertyGet(obj,identifier,i);

    if(ret == null)
    {
        Class claz = obj.getClass();
        if(obj instanceof HttpServletRequest
            || obj instanceof HttpSession
            || obj instanceof ServletContext)
        {
            AbstractExecutor executor = new GetAttributeExecutor(log, introspector, claz, identifier);
            ret = executor.isAlive() ? new VelGetterImpl(executor) : null;
        }
    }
    return ret;
}
 

public void testNullPropertyGetter()
    throws Exception
{
    Uberspect u = ri.getUberspect();
    GetPutObject gpo = new GetPutObject();
    Map map = new HashMap();

    VelPropertyGet getter = u.getPropertyGet(gpo, null, null);

    // Don't screw up on null properties. That should map to get() on the GPO.
    assertNotNull(getter);
    assertEquals("Found wrong method", "get", getter.getMethodName());

    // And should be null on a Map which does not have a get()
    getter = u.getPropertyGet(map, null, null);
    assertNull(getter);

}
 

public void testNullObjects()
        throws Exception
{
    // How about some null objects... Gee, I'm mean. ;-)
    Uberspect u = ri.getUberspect();

    VelPropertyGet getter = u.getPropertyGet(null, "foo", null);
    assertNull(getter);

    VelPropertySet setter = u.getPropertySet(null, "foo", Object.class, null);
    assertNull(setter);
}
 

public void testEmptyPropertyGetter()
        throws Exception
{
    Uberspect u = ri.getUberspect();
    Map map = new HashMap();

    VelPropertyGet getter = u.getPropertyGet(map, "", null);

    // Don't screw up on empty properties. That should map to get("")
    assertNotNull(getter);
    assertEquals("Found wrong method", "get", getter.getMethodName());
}
 

public void testRegularGetters()
        throws Exception
{
    VelPropertyGet getter;

    Uberspect u = ri.getUberspect();
    UberspectorTestObject uto = new UberspectorTestObject();

    // getRegular()
    getter = u.getPropertyGet(uto, "Regular", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "getRegular", getter.getMethodName());

    // Lowercase regular
    getter = u.getPropertyGet(uto, "regular", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "getRegular", getter.getMethodName());

    // lowercase: getpremium()
    getter = u.getPropertyGet(uto, "premium", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "getpremium", getter.getMethodName());

    // test uppercase: getpremium()
    getter = u.getPropertyGet(uto, "Premium", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "getpremium", getter.getMethodName());
}
 

public void testBooleanGetters()
        throws Exception
{
    VelPropertyGet getter;

    Uberspect u = ri.getUberspect();
    UberspectorTestObject uto = new UberspectorTestObject();

    // getRegular()
    getter = u.getPropertyGet(uto, "RegularBool", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "isRegularBool", getter.getMethodName());

    // Lowercase regular
    getter = u.getPropertyGet(uto, "regularBool", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "isRegularBool", getter.getMethodName());

    // lowercase: getpremiumBool()
    getter = u.getPropertyGet(uto, "premiumBool", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "ispremiumBool", getter.getMethodName());

    // test uppercase: ()
    getter = u.getPropertyGet(uto, "PremiumBool", null);
    assertNotNull(getter);
    assertEquals("Found wrong method", "ispremiumBool", getter.getMethodName());
}
 

public VelPropertyGet getPropertyGet(Object obj, String identifier, Info i)
{
    VelPropertyGet propertyGet = super.getPropertyGet(obj, identifier, i);

    if (propertyGet == null)
    {
        if (obj == null)
            throw new UberspectTestException("Can't call getter '" + identifier + "' on null object",i);
        else
            throw new UberspectTestException("Did not find "+ obj.getClass().getName()+"."+identifier, i);
    }

    return propertyGet;
}
 

@Override
public VelPropertyGet getPropertyGet(Object obj, String identifier, Info info) throws Exception {
	return uberspector.getPropertyGet( obj, identifier, info);
}
 

public VelPropertyGet getPropertyGet(Object obj, String identifier, Info info)
{
    identifier = identifier.replaceAll("foo","bar");
    return super.getPropertyGet(obj,identifier,info);
}