Hacked MDM startup configuration

src/main/java/ca/uhn/fhir/jpa/starter/Application.java

@@ -1,6 +1,6 @@
 package ca.uhn.fhir.jpa.starter;
 
-import ca.uhn.fhir.jpa.mdm.MdmConfig;
+import ca.uhn.fhir.jpa.starter.mdm.MdmConfig;
 import ca.uhn.fhir.jpa.starter.annotations.OnEitherVersion;
 import ca.uhn.fhir.jpa.subscription.channel.config.SubscriptionChannelConfig;
 import ca.uhn.fhir.jpa.subscription.match.config.SubscriptionProcessorConfig;
@@ -29,6 +29,15 @@ public class Application extends SpringBootServletInitializer {
 
   public static void main(String[] args) {
 
+  	 /*
+  	 * https://github.com/hapifhir/hapi-fhir-jpaserver-starter/issues/246
+  	 * This will be allowed for a short period until we know how MDM should be configured
+  	 * or don't have multiple equal bean instantiations.
+  	 *
+  	 * This will require changes in the main project as stated in the Github comment
+  	 * */
+  	 System.setProperty("spring.main.allow-bean-definition-overriding","true");
+
     System.setProperty("spring.batch.job.enabled", "false");
     SpringApplication.run(Application.class, args);
 

src/main/java/ca/uhn/fhir/jpa/starter/mdm/MdmConfig.java

@@ -0,0 +1,40 @@
+package ca.uhn.fhir.jpa.starter.mdm;
+
+import ca.uhn.fhir.context.FhirContext;
+import ca.uhn.fhir.jpa.mdm.config.MdmConsumerConfig;
+import ca.uhn.fhir.jpa.mdm.config.MdmSubmitterConfig;
+import ca.uhn.fhir.jpa.starter.AppProperties;
+import ca.uhn.fhir.mdm.api.IMdmSettings;
+import ca.uhn.fhir.mdm.rules.config.MdmRuleValidator;
+import ca.uhn.fhir.mdm.rules.config.MdmSettings;
+import ca.uhn.fhir.rest.server.util.ISearchParamRegistry;
+import com.google.common.base.Charsets;
+import java.io.IOException;
+import org.apache.commons.io.IOUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Conditional;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.core.io.DefaultResourceLoader;
+import org.springframework.core.io.Resource;
+
+@Configuration
+@Conditional(MdmConfigCondition.class)
+@Import({MdmConsumerConfig.class, MdmSubmitterConfig.class})
+public class MdmConfig {
+
+	@Bean
+	MdmRuleValidator mdmRuleValidator(FhirContext theFhirContext, ISearchParamRegistry theSearchParamRegistry) {
+		return new MdmRuleValidator(theFhirContext, theSearchParamRegistry);
+	}
+
+	@Bean
+	IMdmSettings mdmSettings(@Autowired MdmRuleValidator theMdmRuleValidator, AppProperties appProperties) throws IOException {
+		DefaultResourceLoader resourceLoader = new DefaultResourceLoader();
+		Resource resource = resourceLoader.getResource("mdm-rules.json");
+		String json = IOUtils.toString(resource.getInputStream(), Charsets.UTF_8);
+		return new MdmSettings(theMdmRuleValidator).setEnabled(appProperties.getMdm_enabled()).setScriptText(json);
+	}
+
+}

src/main/java/ca/uhn/fhir/jpa/starter/mdm/MdmConfigCondition.java

@@ -0,0 +1,13 @@
+package ca.uhn.fhir.jpa.starter.mdm;
+
+import org.springframework.context.annotation.Condition;
+import org.springframework.context.annotation.ConditionContext;
+import org.springframework.core.type.AnnotatedTypeMetadata;
+
+public class MdmConfigCondition implements Condition {
+  @Override
+  public boolean matches(ConditionContext conditionContext, AnnotatedTypeMetadata metadata) {
+    String property = conditionContext.getEnvironment().getProperty("hapi.fhir.mdm_enabled");
+    return Boolean.parseBoolean(property);
+  }
+}