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

    }


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

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    public ComponentDependencyDeclaration[] getComponentDependencies() {
        List deps = getDependencies();
        if (deps != null) {
            ComponentDependencyDeclaration[] result = new ComponentDependencyDeclaration[deps.size()];
            for (int i = 0; i < result.length; i++) {
                Dependency dep = (Dependency) deps.get(i);
                if (dep instanceof ComponentDependencyDeclaration) {
                    result[i] = (ComponentDependencyDeclaration) dep;
                }
                else {
                    result[i] = new SCDImpl(dep.toString(), (dep.isAvailable() ? 1 : 0) + (dep.isRequired() ? 2 : 0), dep.getClass().getName());
                }
            }
            return result;
        }
        return null;

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        // only bother calculating dependencies if we're active
        if (isActive) {
            boolean allRequiredAvailable = true;
            boolean keepInstanceAround = isInstantiated;
            for (int i = 0; i < deps.size(); i++) {
                Dependency dep = (Dependency) deps.get(i);
                if (dep.isRequired()) {
                    if (!dep.isAvailable()) {
                        allRequiredAvailable = false;
                        if (!dep.isInstanceBound()) {
                            keepInstanceAround = false;
                        }
                    }
                }
            }

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            List deps = m_deps;
            for (int i = 0; i < deps.size(); i++) {
                if (i == 0) {
                    buf.append("|");
                }
                Dependency dep = (Dependency) deps.get(i);
                buf.append("(" + (dep.isRequired() ? "Req " : "   ") + (dep.isAvailable() ? "Avl " : "    ") + (dep.isInstanceBound() ? "InB " : "    ") + (dep.isPropagated() ? "Prp " : "    ") + dep + ")");
            }
            buf.append("]");
            m_stringValue = buf.toString();
        }
        return m_stringValue;

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            String name = dependency.getString(Params.name, null);
            if (name == null) {
                DependencyBuilder depBuilder = new DependencyBuilder(dependency);
                Log.instance().info("adding dependency %s into service %s",
                                   dependency, srvMeta);
                Dependency d = depBuilder.build(b, dm, false);
                s.add(d);
            }
        }
    }

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    }


    public Dependency build(Bundle b, DependencyManager dm, boolean instanceBound)
        throws Exception
    {
        Dependency dp = null;
        DependencyType type;


        try
        {
            type = DependencyType.valueOf(m_metaData.getString(Params.type));

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        String removed = timeout != -1 ? null : m_metaData.getString(Params.removed, null);
        String autoConfigField = m_metaData.getString(Params.autoConfig, null);
        boolean required = "true".equals(m_metaData.getString(Params.required, "true"));
        boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false"));


        Dependency dp = createServiceDependency(dm, serviceClass,
            serviceFilter, defaultServiceImplClass, added, changed,
            removed, autoConfigField, timeout, required, instanceBound, propagate);
        return dp;
    }

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    private Dependency createConfigurationDependency(DependencyManager dm, boolean instanceBound)
    {
        String pid = m_metaData.getString(Params.pid);
        boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false"));
        String callback = m_metaData.getString(Params.updated, "updated");
        Dependency dp = createConfigurationDependency(dm, pid, callback, propagate, instanceBound);
        return dp;
    }

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        boolean required = "true".equals(m_metaData.getString(Params.required, "true"));
        String filter = m_metaData.getString(Params.filter, null);
        int stateMask = m_metaData.getInt(Params.stateMask, -1);
        boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false"));


        Dependency dp = createBundleDependency(dm, added, changed, removed, required, propagate, filter,
            stateMask, instanceBound);
        return dp;
    }

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        String filter = m_metaData.getString(Params.filter, null);
        boolean required = "true".equals(m_metaData.getString(Params.required, "true"));
        boolean propagate = "true".equals(m_metaData.getString(Params.propagate, "false"));
        String autoConfigField = m_metaData.getString(Params.autoConfig, null);


        Dependency dp = createResourceDependency(dm, added, changed, removed, required, filter, 
                                                 propagate, autoConfigField, instanceBound);
        return dp;
    }

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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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