Examples of org.apache.felix.dm.Dependency

org.apache.felix.dm.Dependency
Generic dependency for a component. A dependency can be required or not. A dependency will be activated by the component it belongs to. The component will call the start(Service service) and stop(Service service) methods. After it has been started, a dependency must callback the associated component's dependencyAvailable() and dependencyUnavailable() methods. State changes of the dependency itself may only be made as long as the dependency is not 'active', meaning it is associated with a running component. @author Felix Project Team

        System.out.println("destroy");
      }
      
      void changed(Component component) {
        m_ensure.step(2);
        Dependency oldDependency = null;
        
        for (Object dependency : component.getDependencies()) {
          if (dependency instanceof ServiceDependency) {
            // remove the dependency
            oldDependency = (Dependency) dependency;

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      }
      
      void changed(Component component) {
        m_ensure.step(2);
        System.out.println("Changing the dependencies");
        Dependency oldDependency = null;
        
        for (Object dependency : component.getDependencies()) {
          if (dependency instanceof ServiceDependency) {
            // remove the dependency
            oldDependency = (Dependency) dependency;
            System.out.println("Old dependency props: " + oldDependency.getProperties());
          }
        }
        
        // and add a new dependency
        component.add(component.getDependencyManager().createServiceDependency().setService(ServiceInterface.class, "(id=2)").setRequired(true).setInstanceBound(true));

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        // if we're inactive, don't do anything, otherwise we might want to start
        // the dependencies
        if (!oldState.isInactive()) {
            for (int i = 0; i < dependencies.size(); i++) {
                Dependency dependency = (Dependency) dependencies.get(i);
                // if the dependency is required, it should be started regardless of the state
                // we're in
                if (dependency.isRequired()) {
                    ((DependencyActivation) dependency).start(this);
                }
                else {
                    // if the dependency is optional, it should only be started if we're in
                    // bound state

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    }
    
    private void configureServiceWithExtraDependencies(State state) {
        Iterator i = state.getDependencies().iterator();
        while (i.hasNext()) {
            Dependency dependency = (Dependency) i.next();
            if (dependency.isAutoConfig() && dependency.isInstanceBound()) {
                configureImplementation(dependency.getAutoConfigType(), dependency.getAutoConfigInstance(), dependency.getAutoConfigName());
            }
        }
    }

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    }


    private void startTrackingOptional(State state) {
        Iterator i = state.getDependencies().iterator();
        while (i.hasNext()) {
            Dependency dependency = (Dependency) i.next();
            if (!dependency.isRequired()) {
                ((DependencyActivation) dependency).start(this);
            }
        }
    }

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    }
    
    private void stopTrackingOptional(State state) {
        Iterator i = state.getDependencies().iterator();
        while (i.hasNext()) {
            Dependency dependency = (Dependency) i.next();
            if (!dependency.isRequired()) {
                ((DependencyActivation) dependency).stop(this);
            }
        }
    }

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    }


    private void startTrackingRequired(State state) {
        Iterator i = state.getDependencies().iterator();
        while (i.hasNext()) {
            Dependency dependency = (Dependency) i.next();
            if (dependency.isRequired()) {
                ((DependencyActivation) dependency).start(this);
            }
        }
    }

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    }


    private void stopTrackingRequired(State state) {
        Iterator i = state.getDependencies().iterator();
        while (i.hasNext()) {
            Dependency dependency = (Dependency) i.next();
            if (dependency.isRequired()) {
                ((DependencyActivation) dependency).stop(this);
            }
        }
    }

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  private Dictionary calculateServiceProperties() {
    Dictionary properties = new Properties();
    addTo(properties, m_serviceProperties);
    for (int i = 0; i < m_dependencies.size(); i++) {
      Dependency d = (Dependency) m_dependencies.get(i);
      if (d.isPropagated() && d.isAvailable()) {
        Dictionary dict = d.getProperties();
        addTo(properties, dict);
      }
    }
    if (properties.size() == 0) {
      properties = null;

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    }


    private void configureServices(State state) {
        Iterator i = state.getDependencies().iterator();
        while (i.hasNext()) {
            Dependency dependency = (Dependency) i.next();
            if (dependency.isAutoConfig()) {
                configureImplementation(dependency.getAutoConfigType(), dependency.getAutoConfigInstance(), dependency.getAutoConfigName());
            }
            if (dependency.isRequired()) {
                dependency.invokeAdded(this);
            }
        }
    }

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Related Classes of org.apache.felix.dm.Dependency

org.apache.felix.dm.impl.ComponentImpl

org.apache.felix.dm.impl.State

org.apache.felix.dm.runtime.AbstractBuilder

org.apache.felix.dm.runtime.DependencyBuilder

org.apache.felix.dm.runtime.FactorySet

org.apache.felix.dm.runtime.ServiceLifecycleHandler

org.apache.felix.dm.test.integration.api.ResourceAdapterDependencyAddAndRemoveTest$CallbackInstance

org.apache.felix.dm.test.integration.api.ResourceAdapterDependencyAddAndRemoveTest2$CallbackInstance

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