runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/DefaultExecutionSpec.java

   1 package org.argeo.slc.core.execution;
   2
   3 import java.util.ArrayList;
   4 import java.util.HashMap;
   5 import java.util.List;
   6 import java.util.Map;
   7 import java.util.UUID;
   8
   9 import org.apache.commons.logging.Log;
  10 import org.apache.commons.logging.LogFactory;
  11 import org.argeo.slc.execution.ExecutionSpec;
  12 import org.argeo.slc.execution.ExecutionSpecAttribute;
  13 import org.springframework.beans.factory.BeanNameAware;
  14 import org.springframework.beans.factory.InitializingBean;
  15 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
  16 import org.springframework.beans.factory.config.BeanDefinition;
  17 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
  18 import org.springframework.context.ApplicationContext;
  19 import org.springframework.context.ApplicationContextAware;
  20 import org.springframework.context.ConfigurableApplicationContext;
  21
  22 public class DefaultExecutionSpec implements ExecutionSpec, BeanNameAware,
  23                 ApplicationContextAware, InitializingBean {
  24         private final static Log log = LogFactory
  25                         .getLog(DefaultExecutionSpec.class);
  26         private ApplicationContext applicationContext;
  27
  28         private String description;
  29         private Map<String, ExecutionSpecAttribute> attributes = new HashMap<String, ExecutionSpecAttribute>();
  30
  31         private String name = getClass().getName() + "#" + UUID.randomUUID();
  32
  33         public Map<String, ExecutionSpecAttribute> getAttributes() {
  34                 return attributes;
  35         }
  36
  37         public void setAttributes(Map<String, ExecutionSpecAttribute> attributes) {
  38                 this.attributes = attributes;
  39         }
  40
  41         public void setBeanName(String name) {
  42                 this.name = name;
  43         }
  44
  45         public String getName() {
  46                 return name;
  47         }
  48
  49         public boolean equals(Object obj) {
  50                 return ((ExecutionSpec) obj).getName().equals(name);
  51         }
  52
  53         public String getDescription() {
  54                 return description;
  55         }
  56
  57         private ConfigurableListableBeanFactory getBeanFactory() {
  58                 return ((ConfigurableApplicationContext) applicationContext)
  59                                 .getBeanFactory();
  60         }
  61
  62         public void setApplicationContext(ApplicationContext applicationContext) {
  63                 this.applicationContext = applicationContext;
  64         }
  65
  66         public void afterPropertiesSet() throws Exception {
  67                 if (description == null) {
  68                         try {
  69                                 description = getBeanFactory().getBeanDefinition(name)
  70                                                 .getDescription();
  71                         } catch (NoSuchBeanDefinitionException e) {
  72                                 // silent
  73                         }
  74                 }
  75
  76                 for (String key : attributes.keySet()) {
  77                         ExecutionSpecAttribute attr = attributes.get(key);
  78                         if (attr instanceof RefSpecAttribute) {
  79                                 RefSpecAttribute rsa = (RefSpecAttribute) attr;
  80                                 if (rsa.getChoices() == null) {
  81                                         List<RefValueChoice> choices = buildRefValueChoices(rsa);
  82                                         if (log.isTraceEnabled())
  83                                                 log.debug("Found " + choices.size() + " choices for "
  84                                                                 + rsa + " in spec " + name);
  85
  86                                         rsa.setChoices(choices);
  87                                 }
  88                         }
  89                 }
  90         }
  91
  92         protected List<RefValueChoice> buildRefValueChoices(RefSpecAttribute rsa) {
  93                 List<RefValueChoice> choices = new ArrayList<RefValueChoice>();
  94                 if (applicationContext == null) {
  95                         log.warn("No application context declared,"
  96                                         + " cannot scan ref value choices.");
  97                         return choices;
  98                 }
  99
 100                 for (String beanName : getBeanFactory().getBeanNamesForType(
 101                                 rsa.getTargetClass(), true, false)) {
 102                         BeanDefinition bd = getBeanFactory().getBeanDefinition(beanName);
 103                         RefValueChoice choice = new RefValueChoice();
 104                         choice.setName(beanName);
 105                         choice.setDescription(bd.getDescription());
 106                         if (log.isTraceEnabled())
 107                                 log.debug("Found choice " + beanName + " for " + rsa);
 108
 109                         choices.add(choice);
 110
 111                 }
 112                 return choices;
 113         }
 114
 115 }