diff options
Diffstat (limited to 'src/main/java/com/c2kernel/process/resource/Resource.java')
| -rw-r--r-- | src/main/java/com/c2kernel/process/resource/Resource.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/main/java/com/c2kernel/process/resource/Resource.java b/src/main/java/com/c2kernel/process/resource/Resource.java new file mode 100644 index 0000000..4d07f35 --- /dev/null +++ b/src/main/java/com/c2kernel/process/resource/Resource.java @@ -0,0 +1,163 @@ +package com.c2kernel.process.resource;
+
+//Java
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Hashtable;
+
+import com.c2kernel.common.InvalidDataException;
+import com.c2kernel.common.ObjectNotFoundException;
+import com.c2kernel.utils.FileStringUtility;
+import com.c2kernel.utils.Logger;
+
+/**************************************************************************
+ *
+ * @author $Author: abranson $ $Date: 2005/10/05 07:39:36 $
+ * @version $Revision: 1.71 $
+ **************************************************************************/
+public class Resource implements ResourceLoader {
+ private final Hashtable<String, String> txtCache = new Hashtable<String, String>();
+ private final URL baseURL;
+ private final HashMap<String, URL> moduleBaseURLs = new HashMap<String, URL>();
+ private final HashMap<String, URL> allBaseURLs = new HashMap<String, URL>();
+
+ public Resource() throws InvalidDataException {
+ baseURL = getURLorResURL("com/c2kernel/utils/resources/");
+ allBaseURLs.put(null, baseURL);
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#getKernelBaseURL()
+ */
+ @Override
+ public URL getKernelBaseURL() {
+ return baseURL;
+ }
+
+ @Override
+ public Class<?> getClassForName(String name) throws ClassNotFoundException {
+ return Class.forName(name);
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#getKernelResourceURL(java.lang.String)
+ */
+ @Override
+ public URL getKernelResourceURL(String resName) throws MalformedURLException {
+ return new URL(baseURL, resName);
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#addModuleBaseURL(java.lang.String, java.net.URL)
+ */
+ @Override
+ public void addModuleBaseURL(String ns, URL newBaseURL) {
+ moduleBaseURLs.put(ns, newBaseURL);
+ allBaseURLs.put(ns, newBaseURL);
+ Logger.msg("Adding resource URL for "+ns+": "+newBaseURL.toString());
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#addModuleBaseURL(java.lang.String, java.lang.String)
+ */
+ @Override
+ public void addModuleBaseURL(String ns, String newBaseURL) throws InvalidDataException {
+ addModuleBaseURL(ns, getURLorResURL(newBaseURL));
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#getModuleBaseURLs()
+ */
+ @Override
+ public HashMap<String, URL> getModuleBaseURLs() {
+ return moduleBaseURLs;
+ }
+
+ private HashMap<String, URL> getAllBaseURLs() {
+ return allBaseURLs;
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#getModuleResourceURL(java.lang.String, java.lang.String)
+ */
+ @Override
+ public URL getModuleResourceURL(String ns, String resName) throws MalformedURLException {
+ return new URL(moduleBaseURLs.get(ns), resName);
+ }
+
+ static private URL getURLorResURL(String newURL) throws InvalidDataException {
+ URL result;
+ try {
+ result = new URL(newURL);
+ } catch (java.net.MalformedURLException ex) {
+ //it is assumed that a 'wrong' URL denotes a directory
+ //of files resolvable from the CLASSPATH
+ result = Resource.class.getClassLoader().getResource(newURL);
+ }
+ if (result == null) {
+ Logger.error("URL "+newURL+" could not be found");
+ throw new InvalidDataException();
+ }
+ return result;
+ }
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#findTextResource(java.lang.String)
+ */
+
+ @Override
+ public String findTextResource(String resName) {
+ for (String ns : getAllBaseURLs().keySet()) {
+ try {
+ return getTextResource(ns, resName);
+ } catch (ObjectNotFoundException ex) { }
+ }
+ Logger.warning("Text resource '"+resName+"' not found.");
+ return null;
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#getAllTextResources(java.lang.String)
+ */
+ @Override
+ public HashMap<String, String> getAllTextResources(String resName) {
+ HashMap<String, String> results = new HashMap<String, String>();
+ for (String ns : getAllBaseURLs().keySet()) {
+ try {
+ results.put(ns, getTextResource(ns, resName));
+ } catch (ObjectNotFoundException ex) { }
+ }
+ return results;
+ }
+
+ /* (non-Javadoc)
+ * @see com.c2kernel.utils.ResourceLoader#getTextResource(java.lang.String, java.lang.String)
+ */
+ @Override
+ public String getTextResource(String ns, String resName) throws ObjectNotFoundException
+ // throws IOException
+ {
+ Logger.msg(8, "Resource::getTextResource() - Getting resource from "+ns+": " + resName);
+
+ if (txtCache.containsKey(ns+'/'+resName)) {
+ return txtCache.get(ns+'/'+resName);
+ }
+
+ try {
+
+ String newRes = null;
+ URL loc;
+
+ if (ns == null) // kernel
+ loc = getKernelResourceURL(resName);
+ else
+ loc = getModuleResourceURL(ns, resName);
+ Logger.msg(5, "Loading resource: "+loc.toString());
+ newRes = FileStringUtility.url2String(loc);
+ txtCache.put(ns+'/'+resName, newRes);
+ return newRes;
+ } catch (Exception e) {
+ throw new ObjectNotFoundException(e.getMessage(),null);
+ }
+ }
+}
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