+/*\r
+ * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>\r
+ *\r
+ * Licensed under the Apache License, Version 2.0 (the "License");\r
+ * you may not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS,\r
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ */\r
+\r
package org.argeo.slc.core.execution;\r
\r
import java.util.Stack;\r
import org.apache.commons.logging.LogFactory;\r
import org.argeo.slc.SlcException;\r
import org.argeo.slc.execution.ExecutionFlow;\r
+import org.argeo.slc.execution.ExecutionSpecAttribute;\r
\r
+/** Manage parameters that need to be set during the instantiation of a flow */\r
public class InstantiationManager {\r
\r
- private final static Log log = LogFactory.getLog(InstantiationManager.class);\r
- \r
- private ThreadLocal<Stack<ExecutionFlow> > flowStack = new ThreadLocal<Stack<ExecutionFlow> >();\r
- \r
+ private final static Log log = LogFactory\r
+ .getLog(InstantiationManager.class);\r
+\r
+ private ThreadLocal<Stack<ExecutionFlow>> flowStack = new ThreadLocal<Stack<ExecutionFlow>>();\r
+\r
public Object createRef(String name) {\r
- \r
- if((flowStack.get() == null) || flowStack.get().empty()) {\r
+\r
+ if ((flowStack.get() == null) || flowStack.get().empty()) {\r
throw new SlcException("No flow is currently initializing."\r
+ " Declare ParameterRef as inner beans or prototypes.");\r
}\r
- \r
+\r
return getInitializingFlowParameter(name);\r
- } \r
- \r
+ }\r
+\r
public void flowInitializationStarted(ExecutionFlow flow, String flowName) {\r
- if (log.isTraceEnabled())\r
- log.trace("Start initialization of " + flow.hashCode() + " ("\r
- + flow + " - " + flow.getClass() + ")");\r
- \r
// set the flow name if it is DefaultExecutionFlow\r
- if(flow instanceof DefaultExecutionFlow) {\r
+ if (flow instanceof DefaultExecutionFlow) {\r
((DefaultExecutionFlow) flow).setBeanName(flowName);\r
}\r
- \r
-// log.info("# flowInitializationStarted " + flowName);\r
+\r
+ if (log.isTraceEnabled())\r
+ log.trace("Start initialization of " + flow.hashCode() + " ("\r
+ + flow + " - " + flow.getClass() + ")");\r
+\r
+ // log.info("# flowInitializationStarted " + flowName);\r
// create a stack for this thread if there is none\r
- if(flowStack.get() == null) {\r
+ if (flowStack.get() == null) {\r
flowStack.set(new Stack<ExecutionFlow>());\r
}\r
flowStack.get().push(flow);\r
if (log.isTraceEnabled())\r
log.trace("Finish initialization of " + flow.hashCode() + " ("\r
+ flow + " - " + flow.getClass() + ")");\r
- ExecutionFlow registeredFlow = flowStack.get().pop();\r
- if (registeredFlow != null) {\r
- if (!flow.getName().equals(registeredFlow.getName()))\r
- throw new SlcException("Current flow is " + flow);\r
-// log.info("# flowInitializationFinished " + flowName);\r
-// initializingFlow.set(null);\r
+\r
+ if (flowStack.get() != null) {\r
+ ExecutionFlow registeredFlow = flowStack.get().pop();\r
+ if (registeredFlow != null) {\r
+ if (!flow.getName().equals(registeredFlow.getName()))\r
+ throw new SlcException("Current flow is " + flow);\r
+ // log.info("# flowInitializationFinished " + flowName);\r
+ // initializingFlow.set(null);\r
+ }\r
+ } else {\r
+ // happens for flows imported as services\r
+ log.warn("flowInitializationFinished - Flow Stack is null");\r
}\r
- } \r
- \r
- public Object getInitializingFlowParameter(String key) {\r
+ }\r
+\r
+ protected ExecutionFlow findInitializingFlowWithParameter(String key) {\r
if ((flowStack.get() == null) || flowStack.get().empty())\r
throw new SlcException("No initializing flow available.");\r
- \r
+\r
// first look in the outer flow (that may override parameters)\r
- for(int i = 0; i < flowStack.get().size(); i++) {\r
- if(flowStack.get().elementAt(i).isSetAsParameter(key)) {\r
- return flowStack.get().elementAt(i).getParameter(key);\r
+ for (int i = 0; i < flowStack.get().size(); i++) {\r
+ if (flowStack.get().elementAt(i).isSetAsParameter(key)) {\r
+ return flowStack.get().elementAt(i);\r
}\r
}\r
throw new SlcException("Key " + key + " is not set as parameter in "\r
- + flowStack.get().firstElement().toString() + " (stack size="+flowStack.get().size()+")"); \r
+ + flowStack.get().firstElement().toString() + " (stack size="\r
+ + flowStack.get().size() + ")");\r
+\r
+ }\r
+\r
+ public Object getInitializingFlowParameter(String key) {\r
+ return findInitializingFlowWithParameter(key).getParameter(key);\r
+ }\r
+\r
+ public Class<?> getInitializingFlowParameterClass(String key) {\r
+ ExecutionSpecAttribute attr = findInitializingFlowWithParameter(key)\r
+ .getExecutionSpec().getAttributes().get(key);\r
+ if (attr instanceof RefSpecAttribute)\r
+ return ((RefSpecAttribute) attr).getTargetClass();\r
+ else if (attr instanceof PrimitiveSpecAttribute) {\r
+ String type = ((PrimitiveSpecAttribute) attr).getType();\r
+ Class<?> clss = PrimitiveUtils.typeAsClass(type);\r
+ if (clss == null)\r
+ throw new SlcException("Cannot convert type " + type\r
+ + " to class.");\r
+ return clss;\r
+ } else\r
+ return null;\r
}\r
\r
public Boolean isInFlowInitialization() {\r
return (flowStack.get() != null) && !flowStack.get().empty();\r
- } \r
+ }\r
}\r
projects / gpl / argeo-slc.git / blobdiff