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package com.sun.jersey.api.core.servlet;
import com.sun.jersey.api.core.ClasspathResourceConfig;
import com.sun.jersey.api.core.ScanningResourceConfig;
import com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner;
import javax.servlet.ServletContext;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A mutable implementation of {@link DefaultResourceConfig} that dynamically
* searches for root resource and provider classes in the Web application
* resource paths declared by the property
* {@link ClasspathResourceConfig#PROPERTY_CLASSPATH}.
* If that property is not included in the map of initial properties passed to
* the constructor then the Web application paths "WEB-INF/lib" and
* "WEB-INF/classes" are utlized.
*
* @author Paul.Sandoz@Sun.Com
*/
public class WebAppResourceConfig extends ScanningResourceConfig {
private static final Logger LOGGER =
Logger.getLogger(WebAppResourceConfig.class.getName());
/**
* @param props the property bag that contains the property
* {@link ClasspathResourceConfig#PROPERTY_CLASSPATH}.
* @param sc the servlet context.
*/
public WebAppResourceConfig(Map<String, Object> props, ServletContext sc) {
this(getPaths(props), sc);
setPropertiesAndFeatures(props);
}
/**
* @param paths the array paths consisting of either jar files or
* directories containing jar files for class files.
* @param sc the servlet context.
*/
public WebAppResourceConfig(String[] paths, ServletContext sc) {
if (paths == null || paths.length == 0)
throw new IllegalArgumentException(
"Array of paths must not be null or empty");
init(paths, sc);
}
private void init(String[] paths, ServletContext sc) {
if (LOGGER.isLoggable(Level.INFO)) {
StringBuilder b = new StringBuilder();
b.append("Scanning for root resource and provider classes in the Web app resource paths:");
for (String p : paths)
b.append('\n').append(" ").append(p);
LOGGER.log(Level.INFO, b.toString());
}
init(new WebAppResourcesScanner(paths, sc));
}
private static String[] getPaths(Map<String, Object> props) {
Object v = props.get(ClasspathResourceConfig.PROPERTY_CLASSPATH);
if (v == null) {
return new String[]{ "/WEB-INF/lib", "/WEB-INF/classes" };
}
String[] paths = getPaths(v);
if (paths.length == 0)
throw new IllegalArgumentException(
ClasspathResourceConfig.PROPERTY_CLASSPATH +
" contains no paths");
return paths;
}
private static String[] getPaths(Object param) {
if (param instanceof String) {
return getElements(new String[] { (String)param });
} else if (param instanceof String[]) {
return getElements((String[])param);
} else {
throw new IllegalArgumentException(
ClasspathResourceConfig.PROPERTY_CLASSPATH + " must " +
"have a property value of type String or String[]");
}
}
}