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

   1 package org.simantics.db.layer0.variable;\r
   2 \r
   3 import java.util.Collection;\r
   4 import java.util.Collections;\r
   5 import java.util.HashMap;\r
   6 import java.util.Map;\r
   7 import java.util.Set;\r
   8 \r
   9 import org.simantics.databoard.binding.Binding;\r
  10 import org.simantics.databoard.type.Datatype;\r
  11 import org.simantics.db.ReadGraph;\r
  12 import org.simantics.db.Resource;\r
  13 import org.simantics.db.WriteGraph;\r
  14 import org.simantics.db.exception.DatabaseException;\r
  15 import org.simantics.utils.ObjectUtils;\r
  16 \r
  17 abstract public class LazyPropertyVariable extends AbstractPropertyVariable {\r
  18 \r
  19     final protected Variable parent;\r
  20     final String name;\r
  21     final Binding binding;\r
  22     final Map<String, Variable> properties;\r
  23 \r
  24     public LazyPropertyVariable(Variable parent, String name, Binding binding, Collection<ConstantPropertyVariableBuilder> propertyBuilders, Set<String> classifications) {\r
  25         assert parent != null;\r
  26         assert name != null;\r
  27         this.parent = parent;\r
  28         this.name = name;\r
  29         this.binding = binding;\r
  30         this.properties = new HashMap<String, Variable>(propertyBuilders.size());\r
  31         for(ConstantPropertyVariableBuilder builder : propertyBuilders) {\r
  32                 properties.put(builder.getName(), builder.build(this));\r
  33         }\r
  34         if(!classifications.isEmpty())\r
  35                 properties.put(Variables.CLASSIFICATIONS, new ConstantPropertyVariable(this, Variables.CLASSIFICATIONS, classifications, null));\r
  36     }\r
  37 \r
  38     public LazyPropertyVariable(Variable parent, String name, Binding binding) {\r
  39         this(parent, name,  binding, Collections.<ConstantPropertyVariableBuilder>emptyList(), Collections.<String>emptySet());\r
  40     }\r
  41 \r
  42     @Override\r
  43     public void setValue(WriteGraph graph, Object value, Binding binding)\r
  44             throws DatabaseException {\r
  45         throw new DatabaseException("Value is constant.");\r
  46     }\r
  47 \r
  48     @Override\r
  49     public String getName(ReadGraph graph) throws DatabaseException {\r
  50         return name;\r
  51     }\r
  52 \r
  53     @Override\r
  54     public Resource getType(ReadGraph graph) throws DatabaseException {\r
  55         return null;\r
  56     }\r
  57 \r
  58     @Override\r
  59     public Resource getPossibleType(ReadGraph graph) throws DatabaseException {\r
  60         return null;\r
  61     }\r
  62 \r
  63     @Override\r
  64     public Resource getType(ReadGraph graph, Resource baseType) throws DatabaseException {\r
  65         return null;\r
  66     }\r
  67 \r
  68     @Override\r
  69     public Resource getPossibleType(ReadGraph graph, Resource baseType) throws DatabaseException {\r
  70         return null;\r
  71     }\r
  72 \r
  73 //    @Override\r
  74 //    public Object getSerialized(ReadGraph graph) throws DatabaseException {\r
  75 //        return name;\r
  76 //    }\r
  77 \r
  78     @Override\r
  79     public Variable getParent(ReadGraph graph) throws DatabaseException {\r
  80         return parent;\r
  81     }\r
  82 \r
  83     @Override\r
  84     public Resource getRepresents(ReadGraph graph) throws DatabaseException {\r
  85         return null;\r
  86     }\r
  87     \r
  88     @Override\r
  89     public Datatype getDatatype(ReadGraph graph) throws DatabaseException {\r
  90         return binding != null ? binding.type() : null;\r
  91     }\r
  92     \r
  93     @Override\r
  94     public Resource getPropertyResource(ReadGraph graph) throws DatabaseException {\r
  95         return null;\r
  96     }\r
  97 \r
  98     @Override\r
  99     public Resource getContainerResource(ReadGraph graph) throws DatabaseException {\r
 100         return null;\r
 101     }\r
 102     \r
 103     @Override\r
 104     public Variable getPredicate(ReadGraph graph) throws DatabaseException {\r
 105         return null;\r
 106     }\r
 107     \r
 108     @Override\r
 109     protected Variable getPossibleDomainProperty(ReadGraph graph, String name)\r
 110                 throws DatabaseException {\r
 111         return properties.get(name);\r
 112     }\r
 113 \r
 114     @Override\r
 115     public Map<String, Variable> collectDomainProperties(ReadGraph graph,\r
 116                 Map<String, Variable> properties) throws DatabaseException {\r
 117         if(!this.properties.isEmpty()) {\r
 118                 if(properties == null) properties = new HashMap<String,Variable>(this.properties.size());\r
 119                 properties.putAll(this.properties);\r
 120         }\r
 121         return properties;\r
 122     }\r
 123     \r
 124     @Override\r
 125     public Set<String> getClassifications(ReadGraph graph) throws DatabaseException {\r
 126         Variable property = getPossibleDomainProperty(graph, Variables.CLASSIFICATIONS);\r
 127         if(property != null) return property.getValue(graph);\r
 128         else return Collections.emptySet();\r
 129     }\r
 130     \r
 131     @Override\r
 132     public int hashCode() {\r
 133         final int prime = 31;\r
 134         int result = 1;\r
 135         result = prime * result + name.hashCode();\r
 136         result = prime * result + parent.hashCode();\r
 137         result = prime * result + ((binding == null) ? 0 : binding.hashCode());\r
 138         return result;\r
 139     }\r
 140 \r
 141     @Override\r
 142     public boolean equals(Object obj) {\r
 143         if (this == obj)\r
 144             return true;\r
 145         if (obj == null)\r
 146             return false;\r
 147         if (getClass() != obj.getClass())\r
 148             return false;\r
 149         LazyPropertyVariable other = (LazyPropertyVariable) obj;\r
 150         if (!name.equals(other.name))\r
 151             return false;\r
 152         if (!parent.equals(other.parent))\r
 153             return false;\r
 154         return ObjectUtils.objectEquals(binding, other.binding);\r
 155     }\r
 156 \r
 157 }\r