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package com.sun.jersey.api.core;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
/**
* A mutable implementation of {@link DefaultResourceConfig} that explicitly
* declares for root resource and provider classes.
*
* @author [email protected]
*/
public class ClassNamesResourceConfig extends DefaultResourceConfig {
/**
* The property value MUST be an instance String or String[]. Each String
* instance represents one or more class names that MUST be separated by ';',
* ',' or ' ' (space).
*/
public static final String PROPERTY_CLASSNAMES = "com.sun.jersey.config.property.classnames";
/**
* Declare an array of root resource and provider classes.
*
* @param classes the array of classes.
*/
public ClassNamesResourceConfig(Class... classes) {
super();
for (Class c : classes)
getClasses().add(c);
}
/**
* Declare root resource and provider class as an array of class names.
*
* @param classNames the array of classes.
*/
public ClassNamesResourceConfig(String... classNames) {
super(getClasses(classNames));
}
/**
* Declare root resource and provider classes declaring the class names as a
* property of {@link ResourceConfig}.
*
* @param props the property bag that contains the property
* {@link #PROPERTY_CLASSNAMES}.
*/
public ClassNamesResourceConfig(Map props) {
super(getClasses(props));
setPropertiesAndFeatures(props);
}
private static Set> getClasses(Map props) {
Object v = props.get(PROPERTY_CLASSNAMES);
if (v == null) {
throw new IllegalArgumentException(PROPERTY_CLASSNAMES + " property is missing");
}
Set> s = getClasses(v);
if (s.isEmpty()) {
throw new IllegalArgumentException(PROPERTY_CLASSNAMES + " contains no classes");
}
return s;
}
private static Set> getClasses(Object param) {
return convertToSet(_getClasses(param));
}
private static Set> getClasses(String[] elements) {
return convertToSet(getElements(elements, ResourceConfig.COMMON_DELIMITERS));
}
private static Set> convertToSet(String[] classes) {
Set> s = new LinkedHashSet>();
for (String c : classes) {
try {
s.add(getClassLoader().loadClass(c));
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
return s;
}
private static String[] _getClasses(Object param) {
if (param instanceof String) {
return getElements(new String[] { (String)param }, ResourceConfig.COMMON_DELIMITERS);
} else if (param instanceof String[]) {
return getElements((String[])param, ResourceConfig.COMMON_DELIMITERS);
} else {
throw new IllegalArgumentException(PROPERTY_CLASSNAMES + " must " +
"have a property value of type String or String[]");
}
}
private static ClassLoader getClassLoader() {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
return (classLoader == null) ? ClassNamesResourceConfig.class.getClassLoader() : classLoader;
}
}