runtime/org.argeo.slc.support.simple/src/main/java/org/argeo/slc/core/execution/AbstractSpringExecutionModule.java

   1 package org.argeo.slc.core.execution;
   2
   3 import java.util.Map;
   4 import java.util.TreeMap;
   5
   6 import org.argeo.slc.SlcException;
   7 import org.argeo.slc.execution.ExecutionContext;
   8 import org.argeo.slc.execution.ExecutionFlow;
   9 import org.argeo.slc.execution.ExecutionFlowDescriptor;
  10 import org.argeo.slc.execution.ExecutionFlowDescriptorConverter;
  11 import org.argeo.slc.execution.ExecutionModule;
  12 import org.argeo.slc.execution.ExecutionModuleDescriptor;
  13 import org.argeo.slc.execution.ExecutionSpec;
  14 import org.argeo.slc.execution.ExecutionSpecAttribute;
  15 import org.springframework.aop.scope.ScopedObject;
  16 import org.springframework.beans.BeansException;
  17 import org.springframework.beans.factory.generic.GenericBeanFactoryAccessor;
  18 import org.springframework.context.ApplicationContext;
  19 import org.springframework.context.ApplicationContextAware;
  20 import org.springframework.util.Assert;
  21
  22 public abstract class AbstractSpringExecutionModule implements ExecutionModule,
  23                 ApplicationContextAware {
  24
  25         private ApplicationContext applicationContext;
  26
  27         private ExecutionContext executionContext;
  28
  29         private ExecutionFlowDescriptorConverter descriptorConverter = new DefaultDescriptorConverter();
  30
  31         public ExecutionModuleDescriptor getDescriptor() {
  32                 ExecutionModuleDescriptor md = new ExecutionModuleDescriptor();
  33                 md.setName(getName());
  34                 md.setVersion(getVersion());
  35
  36                 GenericBeanFactoryAccessor accessor = new GenericBeanFactoryAccessor(
  37                                 applicationContext);
  38                 Map<String, ExecutionFlow> executionFlows = accessor
  39                                 .getBeansOfType(ExecutionFlow.class);
  40
  41                 for (String name : executionFlows.keySet()) {
  42                         ExecutionFlow executionFlow = executionFlows.get(name);
  43
  44                         Assert.notNull(executionFlow.getName());
  45                         Assert.state(name.equals(executionFlow.getName()));
  46
  47                         ExecutionSpec executionSpec = executionFlow.getExecutionSpec();
  48                         Assert.notNull(executionSpec);
  49                         Assert.notNull(executionSpec.getName());
  50
  51                         Map<String, Object> values = new TreeMap<String, Object>();
  52                         for (String key : executionSpec.getAttributes().keySet()) {
  53                                 ExecutionSpecAttribute attribute = executionSpec
  54                                                 .getAttributes().get(key);
  55
  56                                 if (executionFlow.isSetAsParameter(key)) {
  57                                         Object value = executionFlow.getParameter(key);
  58                                         if (attribute instanceof PrimitiveSpecAttribute) {
  59                                                 PrimitiveValue primitiveValue = new PrimitiveValue();
  60                                                 primitiveValue
  61                                                                 .setType(((PrimitiveSpecAttribute) attribute)
  62                                                                                 .getType());
  63                                                 primitiveValue.setValue(value);
  64                                                 values.put(key, primitiveValue);
  65                                         } else if (attribute instanceof RefSpecAttribute) {
  66                                                 RefValue refValue = new RefValue();
  67                                                 if (value instanceof ScopedObject) {
  68                                                         refValue.setLabel("RUNTIME "
  69                                                                         + value.getClass().getName());
  70                                                 } else {
  71                                                         refValue.setLabel("STATIC "
  72                                                                         + value.getClass().getName());
  73                                                 }
  74                                                 values.put(key, refValue);
  75                                         } else {
  76                                                 throw new SlcException("Unkown spec attribute type "
  77                                                                 + attribute.getClass());
  78                                         }
  79                                 }
  80
  81                         }
  82
  83                         ExecutionFlowDescriptor efd = new ExecutionFlowDescriptor(name,
  84                                         values, executionSpec);
  85                         if (executionFlow.getPath() != null)
  86                                 efd.setPath(executionFlow.getPath());
  87
  88                         // Add execution spec if necessary
  89                         if (!md.getExecutionSpecs().contains(executionSpec))
  90                                 md.getExecutionSpecs().add(executionSpec);
  91
  92                         // Add execution flow
  93                         md.getExecutionFlows().add(efd);
  94                 }
  95
  96                 return md;
  97         }
  98
  99         public void execute(ExecutionFlowDescriptor executionFlowDescriptor) {
 100                 if (descriptorConverter != null)
 101                         executionContext.addVariables(descriptorConverter
 102                                         .convertValues(executionFlowDescriptor));
 103                 ExecutionFlow flow = (ExecutionFlow) applicationContext.getBean(
 104                                 executionFlowDescriptor.getName(), ExecutionFlow.class);
 105                 flow.execute();
 106         }
 107
 108         public void setApplicationContext(ApplicationContext applicationContext)
 109                         throws BeansException {
 110                 this.applicationContext = applicationContext;
 111         }
 112
 113         public void setExecutionContext(ExecutionContext executionContext) {
 114                 this.executionContext = executionContext;
 115         }
 116
 117         public void setDescriptorConverter(
 118                         ExecutionFlowDescriptorConverter descriptorConverter) {
 119                 this.descriptorConverter = descriptorConverter;
 120         }
 121
 122 }