Clarify overall project structure.

[gpl/argeo-slc.git] / legacy / org.argeo.slc.spring / src / org / argeo / slc / core / execution / xml / AsFlowDecorator.java

diff --git a/legacy/org.argeo.slc.spring/src/org/argeo/slc/core/execution/xml/AsFlowDecorator.java b/legacy/org.argeo.slc.spring/src/org/argeo/slc/core/execution/xml/AsFlowDecorator.java
new file mode 100644 (file)
index 0000000..b68d9c7
--- /dev/null
+++ b/legacy/org.argeo.slc.spring/src/org/argeo/slc/core/execution/xml/AsFlowDecorator.java
@@ -0,0 +1,56 @@
+package org.argeo.slc.core.execution.xml;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.slc.SlcException;
+import org.argeo.slc.core.execution.DefaultExecutionFlow;
+import org.argeo.slc.execution.ExecutionFlow;
+import org.springframework.beans.BeanMetadataElement;
+import org.springframework.beans.factory.config.BeanDefinitionHolder;
+import org.springframework.beans.factory.config.RuntimeBeanReference;
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.support.ManagedList;
+import org.springframework.beans.factory.xml.BeanDefinitionDecorator;
+import org.springframework.beans.factory.xml.ParserContext;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Node;
+
+/** Publishes a {@link Runnable} as an {@link ExecutionFlow} */
+public class AsFlowDecorator implements BeanDefinitionDecorator {
+       private Log log = LogFactory.getLog(AsFlowDecorator.class);
+
+       public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder bean,
+                       ParserContext ctx) {
+               String attrValue = ((Attr) node).getValue();
+               if (attrValue.charAt(attrValue.length() - 1) == '/')
+                       throw new SlcException(attrValue + " cannot end with a path");
+               final String flowBeanName = attrValue;
+
+               if (log.isTraceEnabled())
+                       log.trace("flowBeanName=" + flowBeanName);
+
+               if (ctx.getRegistry().containsBeanDefinition(flowBeanName))
+                       throw new SlcException("A bean named " + flowBeanName
+                                       + " is already defined.");
+               BeanDefinitionBuilder flow = BeanDefinitionBuilder
+                               .rootBeanDefinition(DefaultExecutionFlow.class);
+               ManagedList<BeanMetadataElement> executables = new ManagedList<BeanMetadataElement>(
+                               1);
+
+               String beanName = bean.getBeanName();
+               if (beanName == null)
+                       executables.add(bean.getBeanDefinition());
+               else
+                       executables.add(new RuntimeBeanReference(beanName));
+
+               // if (path != null)
+               // flow.addPropertyValue("path", path);
+               flow.addPropertyValue("executables", executables);
+
+               if (beanName != null)
+                       ctx.getRegistry().registerBeanDefinition(flowBeanName,
+                                       flow.getBeanDefinition());
+               return bean;
+       }
+
+}