added multi-configurer support

src/main/java/com/inteligr8/activiti/ext/MultiProcessEngineConfigurer.java

@@ -0,0 +1,57 @@
+package com.inteligr8.activiti.ext;
+
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.activiti.engine.cfg.ProcessEngineConfigurator;
+import org.activiti.spring.SpringProcessEngineConfiguration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Component;
+
+import com.activiti.api.engine.ProcessEngineConfigurationConfigurer;
+
+@Component(MultiProcessEngineConfigurer.BEAN_NAME)
+@Primary
+public class MultiProcessEngineConfigurer implements ProcessEngineConfigurationConfigurer {
+	
+	public static final String BEAN_NAME = "inteligr8.multiext.processEngineConfigurer";
+    
+    private final Logger logger = LoggerFactory.getLogger(this.getClass());
+    
+    @Autowired
+    private ApplicationContext applicationContext;
+    
+    @Override
+    public void processEngineConfigurationInitialized(SpringProcessEngineConfiguration springProcessEngineConfiguration) {
+    	this.logger.info("Multi-Ext enabled for ProcessEngineConfigurationConfigurer");
+    	
+    	this.wrapSpringProcessEngineConfigurationConfigurers(springProcessEngineConfiguration);
+    	this.wrapProcessEngineConfigurators(springProcessEngineConfiguration);
+    }
+    
+    private void wrapSpringProcessEngineConfigurationConfigurers(SpringProcessEngineConfiguration springProcessEngineConfiguration) {
+        Map<String, ProcessEngineConfigurationConfigurer> beans = this.applicationContext.getBeansOfType(ProcessEngineConfigurationConfigurer.class);
+        beans.remove(BEAN_NAME);
+        
+        this.logger.debug("Executing {} spring process engine configurers", beans.size());
+        for (Entry<String, ProcessEngineConfigurationConfigurer> configurer : beans.entrySet()) {
+            this.logger.trace("Executing spring process engine configurer: {}: {}", configurer.getKey(), configurer.getValue().getClass());
+            configurer.getValue().processEngineConfigurationInitialized(springProcessEngineConfiguration);
+        }
+    }
+    
+    private void wrapProcessEngineConfigurators(SpringProcessEngineConfiguration springProcessEngineConfiguration) {
+        Map<String, ProcessEngineConfigurator> beans = this.applicationContext.getBeansOfType(ProcessEngineConfigurator.class);
+        
+        this.logger.debug("Executing {} process engine configurators", beans.size());
+        for (Entry<String, ProcessEngineConfigurator> configurator : beans.entrySet()) {
+            this.logger.trace("Executing process engine configurator: {}: {}", configurator.getKey(), configurator.getValue().getClass());
+            springProcessEngineConfiguration.addConfigurator(configurator.getValue());
+        }
+    }
+
+}