1 /* 2 * Copyright (C) 2007-2012 Argeo GmbH 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.argeo.slc.execution; 17 18 /** Deal with nested level of executions using different variables. */ 19 public interface ExecutionStack { 20 /** 21 * @param name 22 * @return null if no object is found 23 */ 24 public Object findScopedObject(String name); 25 26 public void addScopedObject(String name, Object obj); 27 28 public void enterFlow(ExecutionFlow executionFlow); 29 30 /** @return internal stack level UUID. */ 31 public String getCurrentStackLevelUuid(); 32 33 public Integer getStackSize(); 34 35 public void leaveFlow(ExecutionFlow executionFlow); 36 37 Object findLocalVariable(String key); 38 }