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/* Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 * 
 * 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.activiti.engine.test.mock;

import org.activiti.engine.delegate.VariableScope;
import org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.activiti.engine.impl.scripting.Resolver;
import org.activiti.engine.impl.scripting.ResolverFactory;

/**
 * This is a bridge resolver, making available any objects registered through {@link org.activiti.engine.test.mock.Mocks#register} inside scripts supported by Activiti. 

 * 

 * In order to use it, you need to declare it as ResolverFactory, for example by using activiti.cfg.xml like this: 

 * 

 * 
 * <?xml version="1.0" encoding="UTF-8"?>

 * <beans xmlns="http://www.springframework.org/schema/beans"

 * xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

 * xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

 * 

 * <bean id="processEngineConfiguration"

 * class="org.activiti.engine.impl.cfg. StandaloneInMemProcessEngineConfiguration">

 * <property name="jobExecutorActivate" value="false" />

 * <property name="expressionManager">

 * <bean class="org.activiti.engine.test.mock.MockExpressionManager" />

 * </property>

 * <property name="resolverFactories">

 * <list>

 * <bean class="org.activiti.engine.impl.scripting.VariableScopeResolverFactory " />

 * <bean class="org.activiti.engine.impl.scripting.BeansResolverFactory" />

 * <bean class="com.deenero.activiti.MockResolverFactory" />

 * </list>

 * </property>

 * </bean>

 * 

 * </beans> 

 * 

 * or by any other means of creating configuration.
 * 

 * 
 */
public class MockResolverFactory implements ResolverFactory {
  @Override
  public Resolver createResolver(ProcessEngineConfigurationImpl processEngineConfiguration, VariableScope variableScope) {
    return new Resolver() {

      @Override
      public Object get(Object key) {
        return Mocks.get(key);
      }

      @Override
      public boolean containsKey(Object key) {
        return Mocks.get(key) != null;
      }
    };
  }
}