/**
* Create a new ProjectionClass from the class
*
* @param pc projection class
* @throws ClassNotFoundException couldn't find the class
* @throws IntrospectionException problem with introspection
*/
ProjectionClass(Class pc) throws ClassNotFoundException, IntrospectionException {
projClass = pc;
// eliminate common properties with "stop class" for getBeanInfo()
Class stopClass;
try {
stopClass = Misc.findClass("ucar.unidata.geoloc.ProjectionImpl");
} catch (Exception ee) {
System.err.println("constructParamInput failed ");
stopClass = null;
}
// analyze current projection class as a bean; may throw IntrospectionException
BeanInfo info = java.beans.Introspector.getBeanInfo(projClass, stopClass);
// find read/write methods
PropertyDescriptor[] props = info.getPropertyDescriptors();
if (debugBeans) {
System.out.print("Bean Properties for class " + projClass);
if ((props == null) || (props.length == 0)) {
System.out.println("none");
return;
}
System.out.println("");
}
for (int i = 0; i < props.length; i++) {
PropertyDescriptor pd = props[i];
Method reader = pd.getReadMethod();
Method writer = pd.getWriteMethod();
// only interesetd in read/write properties
if ((reader == null) || (writer == null)) {
continue;
}
// A hack to exclude some attributes
if (pd.getName().equals("name") || pd.getName().equals("defaultMapArea")) {
continue;
}
ProjectionParam p = new ProjectionParam(pd.getName(), reader, writer, pd.getPropertyType());
paramList.add(p);
if (debugBeans) {
System.out.println(" -->" + p);
}
}
// get an instance of this class so we can call toClassName()
Projection project;
if (null == (project = makeDefaultProjection())) {
name = "none";
return;
}
// invoke the toClassName method
try {
Method m = projClass.getMethod("getProjectionTypeLabel", VOIDCLASSARG);
name = (String) m.invoke(project, VOIDOBJECTARG);
} catch (NoSuchMethodException ee) {
System.err.println(
"ProjectionManager: class "
+ projClass
+ " does not have method getProjectionTypeLabel()");
throw new ClassNotFoundException();
} catch (SecurityException ee) {
System.err.println(
"ProjectionManager: class "
+ projClass
+ " got SecurityException on getProjectionTypeLabel()"
+ ee);
throw new ClassNotFoundException();
} catch (Exception ee) {
System.err.println(
"ProjectionManager: class "
+ projClass
+ " Exception when invoking getProjectionTypeLabel()"
+ ee);
throw new ClassNotFoundException();
}
}
