Examples of jfun.yan.Component

jfun.yan.Component
Responsible for component instance creation and verification.
Component is immutable. All update functions such as the ones started with "with" are functional-update, which means a new Component object is created to reflect the change, while the state of the old object remains the same.

Component is the core of Yan in the sense that most customizations of instance creation strategy can be done by combining existing Component objects.

This is called a "combinator" approach where complex components can be constructed by combining simpler components who may be combinations of yet simpler components.

Common combinators are included in this class to make the syntax simpler for combining components. For example:
comp1.withArguments(args) rather than Components.withArguments(comp1, args)
Codehaus.org. @author Ben Yu @see Components @see jfun.yan.Monad

  public ApplicationContext getApplicationContext() {
    return spring.getApplicationContext();
  }


  public Component eval(){
    final Component r = super.eval();
    return SpringAdapter.adapt(r, this, tx, transaction_attrs, interfaces);
  }

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  public Component eval(){
    if(super.getName()==null){
      super.setName("aspectOf");
    }
    
    final Component result = super.eval();
    this.registerEagerInstantiation(result);
    return result;
  }

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    if(ind<0){
      raise("invalid subscript: "+ind);
    }
  }
  public Component eval(){
    final Component cc = getComponent();
    checkMandatory("component", cc);
    checkIndex(ind);
    final Class type = cc.getType();
    if(type!=null && !type.isArray() && 
        !jfun.yan.util.Utils.isCompatible(List.class, cc)
    ){
      throw raise("cannot apply subscript against " +
          Misc.getTypeName(type));

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  public ApplicationContext getApplicationContext() {
    return spring.getApplicationContext();
  }


  public Component eval(){
    final Component r = super.eval();
    return SpringAdapter.adapt(r, this, tx, transaction_attrs, interfaces);
  }

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  public ApplicationContext getApplicationContext() {
    return spring.getApplicationContext();
  }


  public Component eval(){
    final Component r = super.eval();
    return SpringAdapter.adapt(r, this, tx, transaction_attrs, interfaces);
  }

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          if(args!=null && ind < args.length){
            return toComponent(type, args[ind]);
          }
          final Arg a = (Arg)indmap.get(new Integer(ind));
          if(a!=null){
            Component val = a.getVal(type);
            if(val == null){
              val = Components.value(null);//Components.useArgument(src, ind, type);
            }
            final Component def = a.getDefault(type);
            if(def!=null){
              return Monad.mplus(val, def);
            }
            else return val;
          }

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    if(!prop_elements.isEmpty()){
      component = component.bindProperties(new PropertyBinder(){
        public Creator bind(Class component_type, Object key, Class type) {
          final Prop prop = (Prop)valnames.get(key);
          if(prop!=null){
            Component result = prop.getVal(type);
            if(result==null){
              result = Components.value(null);//Components.useProperty(component_type, key, type);
            }
            final Component def = prop.getDefault(type);
            if(def!=null){
              result = Monad.mplus(result, def);
            }
            else if(prop.isOptional()){
              result = result.optional();

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  public void setProps(Component props) {
    this.props = props;
  }


  public Component eval(){
    final Component p = getProps();
    final Component cc = getMandatory();
    Component result = p.bind(new Binder(){
      public Creator bind(Object v) throws Throwable {
        if(v==null) return cc;
        if(v instanceof java.util.Map){
          final java.util.Map m = (java.util.Map)v;
          final int sz = m.size();

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  public void setArgs(Component args) {
    this.args = args;
  }


  public Component eval(){
    final Component a = getArgs();
    final Component cc = getMandatory();
    
    Component result = a.bind(new Binder(){
      public Creator bind(Object v) throws Throwable {
        if(v==null) return cc;
        if(v.getClass().isArray()){
          final int sz = Array.getLength(v);
          final Component[] cargs = new Component[sz];

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    this.reentrant_set = true;
  }


  public Component eval(){
    checkMandatory("name", name);
    final Component target = getMandatory();
    final String phase = name.toLowerCase(Locale.US)
      .trim();
    if(DefaultLifecycleDescriptor
        .DEFAULT_INITIALIZER_NAME.equals(phase)){
      //initializer runs right away.
      return target;
    }
    else{
      //The object identity of the factory determines if this factory
      //can be called multiple times by the lifecycle manager.
      //so cannot use singleton even if it carries no state.
      final Component factory = 
        target.factory();
      final LifecycleManager man = super.getNutEnvironment()
      .getLifecycleManager();
      final Lifecycle lifecycle = new Lifecycle();
      lifecycle.put(phase, FactoryProcedure.instance(), isReentrant(phase));

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