Clarify SLC project structure.

[gpl/argeo-slc.git] / cms / org.argeo.slc.spring / src / org / argeo / slc / core / execution / DefaultExecutionSpec.java

diff --git a/cms/org.argeo.slc.spring/src/org/argeo/slc/core/execution/DefaultExecutionSpec.java b/cms/org.argeo.slc.spring/src/org/argeo/slc/core/execution/DefaultExecutionSpec.java
new file mode 100644 (file)
index 0000000..e603f71
--- /dev/null
+++ b/cms/org.argeo.slc.spring/src/org/argeo/slc/core/execution/DefaultExecutionSpec.java
@@ -0,0 +1,98 @@
+package org.argeo.slc.core.execution;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.slc.execution.ExecutionSpecAttribute;
+import org.argeo.slc.execution.RefSpecAttribute;
+import org.argeo.slc.execution.RefValueChoice;
+import org.springframework.beans.factory.BeanNameAware;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.context.ConfigurableApplicationContext;
+
+/** Spring based implementation of execution specifications. */
+@Deprecated
+public class DefaultExecutionSpec extends org.argeo.slc.runtime.DefaultExecutionSpec
+               implements BeanNameAware, ApplicationContextAware, InitializingBean {
+       private static final long serialVersionUID = 5159882223926926539L;
+       private final static Log log = LogFactory.getLog(DefaultExecutionSpec.class);
+       private transient ApplicationContext applicationContext;
+
+       public DefaultExecutionSpec() {
+               super();
+       }
+
+       public void setBeanName(String name) {
+               setName(name);
+       }
+
+       private ConfigurableListableBeanFactory getBeanFactory() {
+               return ((ConfigurableApplicationContext) applicationContext).getBeanFactory();
+       }
+
+       public void setApplicationContext(ApplicationContext applicationContext) {
+               this.applicationContext = applicationContext;
+       }
+
+       public void afterPropertiesSet() throws Exception {
+               if (getDescription() == null) {
+                       try {
+                               setDescription(getBeanFactory().getBeanDefinition(getName()).getDescription());
+                       } catch (NoSuchBeanDefinitionException e) {
+                               // silent
+                       }
+               }
+
+               for (String key : getAttributes().keySet()) {
+                       ExecutionSpecAttribute attr = getAttributes().get(key);
+                       if (attr instanceof RefSpecAttribute) {
+                               RefSpecAttribute rsa = (RefSpecAttribute) attr;
+                               if (rsa.getChoices() == null) {
+                                       List<RefValueChoice> choices = buildRefValueChoices(rsa);
+                                       rsa.setChoices(choices);
+                               }
+                               if (log.isTraceEnabled())
+                                       log.debug("Spec attr " + key + " has " + rsa.getChoices().size() + " choices");
+                       }
+               }
+       }
+
+       /**
+        * Generates a list of ref value choices based on the bean available in the
+        * application context.
+        */
+       protected List<RefValueChoice> buildRefValueChoices(RefSpecAttribute rsa) {
+               List<RefValueChoice> choices = new ArrayList<RefValueChoice>();
+               if (applicationContext == null) {
+                       log.warn("No application context declared," + " cannot scan ref value choices.");
+                       return choices;
+               }
+
+               beanNames: for (String beanName : getBeanFactory().getBeanNamesForType(rsa.getTargetClass(), true, false)) {
+
+                       // Since Spring 3, systemProperties is implicitly defined but has no
+                       // bean definition
+                       if (beanName.equals("systemProperties"))
+                               continue beanNames;
+
+                       BeanDefinition bd = getBeanFactory().getBeanDefinition(beanName);
+                       RefValueChoice choice = new RefValueChoice();
+                       choice.setName(beanName);
+                       choice.setDescription(bd.getDescription());
+                       if (log.isTraceEnabled())
+                               log.debug("Found choice " + beanName + " for " + rsa);
+
+                       choices.add(choice);
+
+               }
+               return choices;
+       }
+
+}