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| package org.qedeq.kernel.bo.load; |
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| import java.io.IOException; |
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| import java.util.ArrayList; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import java.util.Map; |
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| |
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| import org.qedeq.kernel.bo.module.LoadingState; |
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| import org.qedeq.kernel.bo.module.ModuleAddress; |
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| import org.qedeq.kernel.bo.module.ModuleProperties; |
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| import org.qedeq.kernel.log.ModuleEventLog; |
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| import org.qedeq.kernel.trace.Trace; |
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| class Modules { |
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| private final Map moduleProperties = new HashMap(); |
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| final ModuleProperties getModuleProperties(final String url) throws IOException {
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| synchronized (moduleProperties) {
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| final ModuleAddress address = new DefaultModuleAddress(url);
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| if (moduleProperties.containsKey(address)) {
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| return (ModuleProperties) moduleProperties.get(address);
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| } else { |
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| final ModuleProperties prop = new DefaultModuleProperties(address);
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| moduleProperties.put(address, prop);
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| return prop;
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| } |
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| } |
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| } |
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| final ModuleProperties getModuleProperties(final ModuleAddress address) {
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| synchronized (moduleProperties) {
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| if (moduleProperties.containsKey(address)) {
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| return (ModuleProperties) moduleProperties.get(address);
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| } else { |
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| final ModuleProperties prop = new DefaultModuleProperties(address);
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| moduleProperties.put(address, prop);
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| return prop;
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| } |
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| } |
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| } |
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| final void removeAllModules() {
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| final String method = "removeAllModules";
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| Trace.begin(this, method);
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| try {
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| synchronized (moduleProperties) {
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| for (final Iterator iterator
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| = moduleProperties.entrySet().iterator(); |
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| iterator.hasNext(); ) {
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| Map.Entry entry = (Map.Entry) iterator.next();
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| final ModuleProperties prop = (ModuleProperties) entry.getValue();
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| Trace.trace(this, method, "remove " + prop);
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| ModuleEventLog.getInstance().removeModule(prop);
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| } |
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| moduleProperties.clear();
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| } |
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| } catch (RuntimeException e) { |
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| Trace.trace(this, method, e);
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| } finally { |
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| Trace.end(this, method);
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| } |
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| } |
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| final void removeModuleAndDependents(final ModuleProperties prop) {
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| final String method = "removeModuleAndDependents";
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| Trace.begin(this, method);
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| try {
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| synchronized (moduleProperties) {
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| Trace.trace(this, method, "remove module and dependents of "
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| + prop.getAddress()); |
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| if (!prop.isLoaded()) {
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| Trace.trace(this, method, "removing " + prop.getAddress());
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| ModuleEventLog.getInstance().removeModule(prop);
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| moduleProperties.remove(prop.getModuleAddress());
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| } else { |
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| Trace.trace(this, method, "module number=" + moduleProperties.size());
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| Trace.trace(this, method, "removing module itself: " + prop.getAddress());
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| ModuleEventLog.getInstance().removeModule(prop);
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| moduleProperties.remove(prop.getModuleAddress());
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| Trace.trace(this, method, "module number=" + moduleProperties.size());
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| } |
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| } |
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| } catch (RuntimeException e) { |
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| Trace.trace(this, method, e);
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| } finally { |
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| Trace.end(this, method);
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| } |
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| } |
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| final String[] getAllLoadedModules() {
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| final String method = "getAllModules";
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| Trace.begin(this, method);
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| try {
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| final List list = new ArrayList();
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| synchronized (moduleProperties) {
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| for (final Iterator iterator
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| = moduleProperties.entrySet().iterator(); |
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| iterator.hasNext(); ) {
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| Map.Entry entry = (Map.Entry) iterator.next();
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| final ModuleProperties prop = (ModuleProperties) entry.getValue();
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| if (prop.getLoadingState() == LoadingState.STATE_LOADED) {
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| list.add(prop.getAddress());
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| } |
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| } |
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| } |
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| return (String[]) list.toArray(new String[] {});
|
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| } finally { |
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| Trace.end(this, method);
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| } |
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| } |
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| final int getNumberOfLoadedModules() {
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| return getAllLoadedModules().length;
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| } |
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| } |