cdmlib-persistence/src/main/java/eu/etaxonomy/cdm/database/DataSourceBeanLoader.java

   1 package eu.etaxonomy.cdm.database;
   2
   3 import java.io.File;
   4 import java.util.HashMap;
   5 import java.util.Map;
   6
   7 import org.apache.log4j.Logger;
   8 import org.springframework.beans.factory.xml.XmlBeanFactory;
   9 import org.springframework.core.io.FileSystemResource;
  10 import org.springframework.stereotype.Component;
  11
  12 import eu.etaxonomy.cdm.common.CdmUtils;
  13
  14 @Component
  15 public class DataSourceBeanLoader {
  16
  17     private static final Logger logger = Logger.getLogger(DataSourceBeanLoader.class);
  18
  19     private static final String DATASOURCE_BEANDEF_FILE = "datasources.xml";
  20     private static final String DATASOURCE_BEANDEF_PATH = CdmUtils.getCdmHomeDir().getPath();
  21
  22     private static String userdefinedBeanDefinitionFile = null;
  23
  24     public void setBeanDefinitionFile(String filename){
  25         userdefinedBeanDefinitionFile = filename;
  26     }
  27
  28
  29     /**
  30      * @return
  31      */
  32     public static <T> Map<String, T> loadDataSources(final Class<T> requiredType) {
  33
  34         Map<String, T> dataSources = new HashMap<String, T>();
  35         String path = DATASOURCE_BEANDEF_PATH + (userdefinedBeanDefinitionFile == null ? DATASOURCE_BEANDEF_FILE : userdefinedBeanDefinitionFile);
  36
  37         logger.info("loading DataSourceBeans from: " + path);
  38         FileSystemResource file = new FileSystemResource(path);
  39         XmlBeanFactory beanFactory  = new XmlBeanFactory(file);
  40
  41         for(String beanName : beanFactory.getBeanDefinitionNames()){
  42             T datasource = beanFactory.getBean(beanName, requiredType);
  43             dataSources.put(beanName, datasource);
  44         }
  45         return (Map<String, T>) dataSources;
  46     }
  47
  48 }