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

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