Rename SLC Core into SLC Spring.

[gpl/argeo-slc.git] / org.argeo.slc.core / src / org / argeo / slc / core / execution / DefaultExecutionStack.java

diff --git a/org.argeo.slc.core/src/org/argeo/slc/core/execution/DefaultExecutionStack.java b/org.argeo.slc.core/src/org/argeo/slc/core/execution/DefaultExecutionStack.java
deleted file mode 100644 (file)
index d1d06c6..0000000
--- a/org.argeo.slc.core/src/org/argeo/slc/core/execution/DefaultExecutionStack.java
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Copyright (C) 2007-2012 Argeo GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *         http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.argeo.slc.core.execution;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Stack;
-import java.util.UUID;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.argeo.slc.SlcException;
-import org.argeo.slc.execution.ExecutionFlow;
-import org.argeo.slc.execution.ExecutionSpecAttribute;
-import org.argeo.slc.execution.ExecutionStack;
-
-/** Canonical implementation of an execution stack. */
-public class DefaultExecutionStack implements ExecutionStack {
-
-       private final static Log log = LogFactory
-                       .getLog(DefaultExecutionStack.class);
-
-       private final Stack<ExecutionFlowRuntime> stack = new Stack<ExecutionFlowRuntime>();
-
-       public synchronized void enterFlow(ExecutionFlow executionFlow) {
-               ExecutionFlowRuntime runtime = new ExecutionFlowRuntime(executionFlow);
-               stack.push(runtime);
-
-               Map<String, ExecutionSpecAttribute> specAttrs = executionFlow
-                               .getExecutionSpec().getAttributes();
-               for (String key : specAttrs.keySet()) {
-                       if (executionFlow.isSetAsParameter(key)) {
-                               runtime.getLocalVariables().put(key,
-                                               executionFlow.getParameter(key));
-                       }
-               }
-       }
-
-       public synchronized String getCurrentStackLevelUuid() {
-               return stack.peek().getUuid();
-       }
-
-       public synchronized Integer getStackSize() {
-               return stack.size();
-       }
-
-       /**
-        * Looks for a set variable in the stack, starting at the upper flows
-        * 
-        * @return the variable or <code>null</code> if not found
-        */
-       public synchronized Object findLocalVariable(String key) {
-               Object obj = null;
-               for (int i = 0; i < stack.size(); i++) {
-                       if (stack.get(i).getLocalVariables().containsKey(key)) {
-                               obj = stack.get(i).getLocalVariables().get(key);
-                               break;
-                       }
-               }
-               return obj;
-       }
-
-       public synchronized void leaveFlow(ExecutionFlow executionFlow) {
-               ExecutionFlowRuntime leftEf = stack.pop();
-
-               if (!leftEf.getExecutionFlow().getName()
-                               .equals(executionFlow.getName()))
-                       throw new SlcException("Asked to leave " + executionFlow
-                                       + " but last is " + leftEf);
-
-               leftEf.getScopedObjects().clear();
-               leftEf.getLocalVariables().clear();
-       }
-
-       public synchronized void addScopedObject(String name, Object obj) {
-               ExecutionFlowRuntime runtime = stack.peek();
-               // TODO: check that the object is not set yet ?
-               if (log.isDebugEnabled()) {
-                       Object existing = findScopedObject(name);
-                       if (existing != null)
-                               log.warn("Scoped object " + name + " of type " + obj.getClass()
-                                               + " already registered in " + runtime);
-               }
-               runtime.getScopedObjects().put(name, obj);
-       }
-
-       /** @return </code>null<code> if not found */
-       public synchronized Object findScopedObject(String name) {
-               Object obj = null;
-               for (int i = stack.size() - 1; i >= 0; i--) {
-                       if (stack.get(i).getScopedObjects().containsKey(name)) {
-                               obj = stack.get(i).getScopedObjects().get(name);
-                               break;
-                       }
-               }
-               return obj;
-       }
-
-       protected static class ExecutionFlowRuntime {
-               private final ExecutionFlow executionFlow;
-               private final Map<String, Object> scopedObjects = new HashMap<String, Object>();
-               private final Map<String, Object> localVariables = new HashMap<String, Object>();
-               private final String uuid = UUID.randomUUID().toString();
-
-               public ExecutionFlowRuntime(ExecutionFlow executionFlow) {
-                       this.executionFlow = executionFlow;
-               }
-
-               public ExecutionFlow getExecutionFlow() {
-                       return executionFlow;
-               }
-
-               public Map<String, Object> getScopedObjects() {
-                       return scopedObjects;
-               }
-
-               public String getUuid() {
-                       return uuid;
-               }
-
-               public Map<String, Object> getLocalVariables() {
-                       return localVariables;
-               }
-
-               @Override
-               public String toString() {
-                       return "Stack Level #" + uuid;
-               }
-
-       }
-}