runtime/org.argeo.slc.specs/src/main/java/org/argeo/slc/execution/ExecutionSpecAttribute.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   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
  17 package org.argeo.slc.execution;
  18
  19 /**
  20  * This interface stands for one attribute of a given flow.
  21  *
  22  * We mainly have two implementations :
  23  *
  24  * + Primitive attributes (no predefined choice, the end user must compute a
  25  * String, a Float, an Integer...)
  26  *
  27  * + RefSpecAttribute which enable two things + a reference to another object of
  28  * the application context + the display of some choices among which the end
  29  * user can choose.
  30  *
  31  * @see org.argeo.slc.core.execution.PrimitiveSpecAttribute
  32  * @see org.argeo.slc.core.execution.RefSpecAttribute
  33  * @see org.argeo.slc.core.execution.PrimitiveUtils : this class offers some
  34  *      helper, among others to cast the various type of primitive attribute.
  35  */
  36 public interface ExecutionSpecAttribute {
  37         public Object getValue();
  38
  39         public Boolean getIsParameter();
  40
  41         public Boolean getIsFrozen();
  42
  43         public Boolean getIsHidden();
  44
  45 }