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This module contains rice's internal integration testing tools. This module is internal to rice and should not used outside of the rice project. It should only be depended on by rice integration test code. This module can depend on any part of rice.
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/**
 * Copyright 2005-2014 The Kuali Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.opensource.org/licenses/ecl2.php
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.kuali.rice.test;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.kuali.rice.core.framework.resourceloader.SpringResourceLoader;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.core.ResolvableType;

import java.util.ArrayList;
import java.util.Collection;

/** 
 * Wraps a collection of bean factories delegating to the inner bean factories.
 * 
 * The first bean factory that returns a non-null/true result is the value that is returned/
 */
public final class CompositeBeanFactory implements BeanFactory {

	private static final Log LOG = LogFactory.getLog(CompositeBeanFactory.class);
	
	private final Collection factories;
	
	public static BeanFactory createBeanFactory(Collection rls) {
		if (rls == null || rls.isEmpty()) {
			throw new IllegalArgumentException("rls is null or empty");
		}
		
		final Collection bfs = new ArrayList();
		for (SpringResourceLoader rl : rls) {
			bfs.add(rl.getContext());
		}
		return new CompositeBeanFactory(bfs);
	}
	
	public CompositeBeanFactory(Collection factories) {
		if (factories == null || factories.isEmpty()) {
			throw new IllegalArgumentException("factories is null or empty");
		}
		
		this.factories = new ArrayList(factories);
	}

	@Override
	public Object getBean(String name) throws BeansException {
		for (BeanFactory f : factories) {
			try {
				Object o = f.getBean(name);
				if (o != null) {
					return o;
				}	
			} catch (BeansException e) {
				LOG.debug("bean exception", e);
			}
		}
		return null;
	}

	@Override
	public  T getBean(String name, Class requiredType) throws BeansException {
		for (BeanFactory f : factories) {
			try {
				T t = f.getBean(name, requiredType);
				if (t != null) {
					return t;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return null;
	}

	@Override
	public  T getBean(Class requiredType) throws BeansException {
		for (BeanFactory f : factories) {
			try {
				T t = f.getBean(requiredType);
				if (t != null) {
					return t;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return null;
	}

	@Override
	public Object getBean(String name, Object... args) throws BeansException {
		for (BeanFactory f : factories) {
			try {
				Object o = f.getBean(name, args);
				if (o != null) {
					return o;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return null;
	}

    @Override
    public  T getBean(Class tClass, Object... objects) throws BeansException {
        // Does not currently support creating a bean instance using explicit arguments
        return getBean(tClass);
    }

    @Override
	public boolean containsBean(String name) {
		for (BeanFactory f : factories) {
			try {
				boolean b = f.containsBean(name);
				if (b) {
					return b;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return false;
	}

	@Override
	public boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
		for (BeanFactory f : factories) {
			try {
				boolean b = f.isSingleton(name);
				if (b) {
					return b;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return false;
	}

	@Override
	public boolean isPrototype(String name) throws NoSuchBeanDefinitionException {
		for (BeanFactory f : factories) {
			try {
				boolean b = f.isPrototype(name);
				if (b) {
					return b;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return false;
	}

	@Override
	public boolean isTypeMatch(String name, Class targetType) throws NoSuchBeanDefinitionException {
		for (BeanFactory f : factories) {
			try {
				boolean b = f.isTypeMatch(name, targetType);
				if (b) {
					return b;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return false;
	}

	@Override
	public boolean isTypeMatch(String name, ResolvableType typeToMatch) throws NoSuchBeanDefinitionException {
		for (BeanFactory f : factories) {
			try {
				boolean b = f.isTypeMatch(name, typeToMatch);
				if (b) {
					return b;
				}
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return false;
	}

	@Override
	public Class getType(String name) throws NoSuchBeanDefinitionException {
		for (BeanFactory f : factories) {
			try {
				Class c = f.getType(name);
				if (c != null) {
					return c;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return null;
	}

	@Override
	public String[] getAliases(String name) {
		for (BeanFactory f : factories) {
			try {
				String[] s = f.getAliases(name);
				if (s != null) {
					return s;
				}	
			} catch (BeansException e) {
				LOG.info("bean exception", e);
			}
		}
		return null;
	}
}