bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableSpaceManipulator.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.db.layer0.variable;\r
  13 \r
  14 import java.util.Collection;\r
  15 import java.util.Collections;\r
  16 \r
  17 import org.simantics.databoard.binding.mutable.Variant;\r
  18 import org.simantics.db.WriteGraph;\r
  19 import org.simantics.db.exception.DatabaseException;\r
  20 \r
  21 /**\r
  22  * Obtained with Variable.adapt\r
  23  */\r
  24 public interface VariableSpaceManipulator {\r
  25 \r
  26     public class PropertyCreationData {\r
  27         public String name;\r
  28         public Variant value;\r
  29         public PropertyCreationData(String name, Variant value) {\r
  30             this.name = name;\r
  31             this.value = value;\r
  32         }\r
  33         \r
  34                 public static PropertyCreationData build(String name, Object value) {\r
  35                         return new PropertyCreationData(name, Variant.ofInstance(value));\r
  36                 }\r
  37         \r
  38     }\r
  39         \r
  40     public class ChildCreationData {\r
  41         public String type;\r
  42         public String name;\r
  43         public PropertyCreationData[] properties;\r
  44         public ChildCreationData(String name, String type, PropertyCreationData[] properties) {\r
  45             this.name = name;\r
  46             this.type = type;\r
  47             this.properties = properties;\r
  48         }\r
  49         \r
  50                 public static ChildCreationData build(String name, String type, PropertyCreationData ... properties) {\r
  51                         return new ChildCreationData(name, type, properties);\r
  52                 }\r
  53         \r
  54     }\r
  55 \r
  56     public class Modification {\r
  57 \r
  58                 public String[] removedProperties;\r
  59                 public String[] removedChildren;\r
  60                 public PropertyCreationData[] newProperties;\r
  61                 public ChildCreationData[] newChildren;\r
  62                 \r
  63                 public Modification(String[] removedProperties, String[] removedChildren, PropertyCreationData[] newProperties, ChildCreationData[] newChildren) {\r
  64                         this.removedProperties = removedProperties;\r
  65                         this.removedChildren = removedChildren;\r
  66                         this.newProperties = newProperties;\r
  67                         this.newChildren = newChildren;\r
  68                 }\r
  69                 \r
  70                 public static Modification build(Collection<String> removedProperties, Collection<String> removedChildren, Collection<PropertyCreationData> newProperties, Collection<ChildCreationData> newChildren) {\r
  71                         return new Modification(\r
  72                                         removedProperties.toArray(new String[removedProperties.size()]),\r
  73                                         removedChildren.toArray(new String[removedChildren.size()]),\r
  74                                         newProperties.toArray(new PropertyCreationData[newProperties.size()]),\r
  75                                         newChildren.toArray(new ChildCreationData[newChildren.size()]));\r
  76                 }\r
  77 \r
  78                 public static Modification buildChildren(Collection<String> removedChildren, Collection<ChildCreationData> newChildren) {\r
  79                         return new Modification(\r
  80                                         new String[0], removedChildren.toArray(new String[removedChildren.size()]),\r
  81                                         new PropertyCreationData[0], newChildren.toArray(new ChildCreationData[newChildren.size()]));\r
  82                 }\r
  83                 \r
  84                 public static Modification addChildren(Collection<ChildCreationData> newChildren) {\r
  85                         return new Modification(\r
  86                                         new String[0], new String[0],\r
  87                                         new PropertyCreationData[0], newChildren.toArray(new ChildCreationData[newChildren.size()]));\r
  88                 }\r
  89 \r
  90                 public static Modification addChild(ChildCreationData child) {\r
  91                         return addChildren(Collections.singletonList(child));\r
  92                 }\r
  93 \r
  94                 public static Modification removeChildren(Collection<String> removedChildren) {\r
  95                         return new Modification(\r
  96                                         new String[0], removedChildren.toArray(new String[removedChildren.size()]),\r
  97                                         new PropertyCreationData[0], new ChildCreationData[0]);\r
  98                 }\r
  99 \r
 100                 public static Modification removeChild(String child) {\r
 101                         return removeChildren(Collections.singletonList(child));\r
 102                 }\r
 103                 \r
 104                 public static Modification addProperties(Collection<PropertyCreationData> newProperties) {\r
 105                         return new Modification(\r
 106                                         new String[0], new String[0],\r
 107                                         newProperties.toArray(new PropertyCreationData[newProperties.size()]), new ChildCreationData[0]);\r
 108                 }\r
 109                 \r
 110                 public static Modification addProperty(PropertyCreationData property) {\r
 111                         return addProperties(Collections.singletonList(property));\r
 112                 }\r
 113                 \r
 114         }\r
 115         \r
 116     void apply(WriteGraph graph, Modification modification) throws DatabaseException;\r
 117         \r
 118 //      Variable createChild(WriteGraph graph, String name, Object content) throws DatabaseException;\r
 119 //      Variable createProperty(WriteGraph graph, String name) throws DatabaseException;\r
 120 //      Variable createVariable(WriteGraph graph, String rvi) throws DatabaseException;\r
 121 //      \r
 122 //      Variable removeChild(WriteGraph graph, String name) throws DatabaseException;\r
 123         \r
 124 }\r