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An aggregation of 1.4, 1.5 modules into an ROP client jar.
There is a newer version: 4.2.1
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 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.di.spi;

import java.util.HashMap;
import java.util.Map;

import org.apache.cayenne.ConfigurationException;
import org.apache.cayenne.di.Injector;
import org.apache.cayenne.di.Key;
import org.apache.cayenne.di.Module;
import org.apache.cayenne.di.Provider;
import org.apache.cayenne.di.Scope;

/**
 * A default Cayenne implementations of a DI injector.
 * 
 * @since 3.1
 */
public class DefaultInjector implements Injector {

    private DefaultScope singletonScope;
    private Scope noScope;

    private Map, Binding> bindings;
    private InjectionStack injectionStack;
    private Scope defaultScope;

    public DefaultInjector(Module... modules) throws ConfigurationException {

        this.singletonScope = new DefaultScope();
        this.noScope = NoScope.INSTANCE;

        // this is intentionally hardcoded and is not configurable
        this.defaultScope = singletonScope;

        this.bindings = new HashMap, Binding>();
        this.injectionStack = new InjectionStack();

        DefaultBinder binder = new DefaultBinder(this);

        // bind self for injector injection...
        binder.bind(Injector.class).toInstance(this);

        // bind modules
        if (modules != null && modules.length > 0) {

            for (Module module : modules) {
                module.configure(binder);
            }
        }
    }

    InjectionStack getInjectionStack() {
        return injectionStack;
    }

     Binding getBinding(Key key) throws ConfigurationException {

        if (key == null) {
            throw new NullPointerException("Null key");
        }

        // may return null - this is intentionally allowed in this non-public method
        return (Binding) bindings.get(key);
    }

     void putBinding(Key bindingKey, Provider provider) {
        // TODO: andrus 11/15/2009 - report overriding existing binding??
        bindings.put(bindingKey, new Binding(provider, defaultScope));
    }

     void changeBindingScope(Key bindingKey, Scope scope) {
        if (scope == null) {
            scope = noScope;
        }

        Binding binding = bindings.get(bindingKey);
        if (binding == null) {
            throw new ConfigurationException("No existing binding for key " + bindingKey);
        }

        binding.changeScope(scope);
    }

    public  T getInstance(Class type) throws ConfigurationException {
        return getProvider(type).get();
    }

    public  T getInstance(Key key) throws ConfigurationException {
        return getProvider(key).get();
    }

    public  Provider getProvider(Class type) throws ConfigurationException {
        return getProvider(Key.get(type));
    }

    public  Provider getProvider(Key key) throws ConfigurationException {

        if (key == null) {
            throw new NullPointerException("Null key");
        }

        Binding binding = (Binding) bindings.get(key);

        if (binding == null) {
            throw new ConfigurationException(
                    "DI container has no binding for key %s",
                    key);
        }

        return binding.getScoped();
    }

    public void injectMembers(Object object) {
        Provider