Examples of java.util.Map.clear()

java.util.Map.clear()
Removes all of the mappings from this map (optional operation). The map will be empty after this call returns. @throws UnsupportedOperationException if the clear operationis not supported by this map

        assertEquals( new Boolean( true ),
                      results.get( "fired" ) );


        /* clear the agenda and the result map */
        agenda.clearAgenda();
        results.clear();


        /*
         * False filter, activations should always be denied
         */
        AgendaFilter filterFalse = new AgendaFilter() {

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      try {
        roots = project.getAllPackageFragmentRoots(reverseMap);
      } catch (JavaModelException e) {
        // project does not exist: cannot happen since this is the info of the project
        roots = new IPackageFragmentRoot[0];
        reverseMap.clear();
      }
      
      HashMap rootInfos = JavaModelManager.getJavaModelManager().deltaState.roots;
      HashMap pkgFragmentsCaches = new HashMap();
      int length = roots.length;

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      boolean first = seen.isEmpty();
      try {
        seen.put(this, this);
        return super.computeHash() + fields.hashCode();
      } finally {
        if (first) seen.clear();
      }
    }
    void toJson(Names names, JsonGenerator gen) throws IOException {
      if (writeNameRef(names, gen)) return;
      String savedSpace = names.space;            // save namespace

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    //If we found both fields then try and clear the maps.
    if (this.recordMetricMapField != null && this.registryMetricMapField != null) {
      try {
        Map recordMap = (Map) this.recordMetricMapField.get(this.metricsRecord);
        recordMap.clear();
        Map registryMap = (Map) this.registryMetricMapField.get(this.registry);
        registryMap.clear();
      } catch (IllegalArgumentException e) {
        LOG.debug(UNABLE_TO_CLEAR);
      } catch (IllegalAccessException e) {

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    if (this.recordMetricMapField != null && this.registryMetricMapField != null) {
      try {
        Map recordMap = (Map) this.recordMetricMapField.get(this.metricsRecord);
        recordMap.clear();
        Map registryMap = (Map) this.registryMetricMapField.get(this.registry);
        registryMap.clear();
      } catch (IllegalArgumentException e) {
        LOG.debug(UNABLE_TO_CLEAR);
      } catch (IllegalAccessException e) {
        LOG.debug(UNABLE_TO_CLEAR);
      }

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            }
        }


        if (cache != null) {
            synchronized (cache) {
                cache.clear();
            }
        }
    }


    protected void finalize() throws Throwable {

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    if (map != null) {
            Iterator it = map.keySet ().iterator ();
            while (it.hasNext()) {
                ((EngineLOB)it.next()).free();
      }
      map.clear();
    }
        if (rootConnection.lobHashMap != null) {
            rootConnection.lobHashMap.clear ();
        }
  }

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    if (map != null) {
            Iterator it = map.keySet ().iterator ();
            while (it.hasNext()) {
                ((EngineLOB)it.next()).free();
      }
      map.clear();
    }
        if (rootConnection.lobHashMap != null) {
            rootConnection.lobHashMap.clear ();
        }

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            realm.setAttribute("initParams", initParams);
            start(realm);
        }


        //Default Host
        initParams.clear();
        initParams.put("workDir","work");
        initParams.put("name","localhost");
        initParams.put("appBase","");
        host = new GBeanData(hostName, HostGBean.GBEAN_INFO);
        host.setAttribute("className", "org.apache.catalina.core.StandardHost");

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        host.setAttribute("className", "org.apache.catalina.core.StandardHost");
        host.setAttribute("initParams", initParams);
        start(host);


        //Default Engine
        initParams.clear();
        initParams.put("name","Geronimo");
        initParams.put("defaultHost","localhost");
        engine = new GBeanData(engineName, EngineGBean.GBEAN_INFO);
        engine.setAttribute("className", "org.apache.geronimo.tomcat.TomcatEngine");
        engine.setAttribute("initParams", initParams);

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