bundles/org.simantics.db.impl/src/org/simantics/db/impl/ResourceImpl.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.impl;
  13
  14 import org.simantics.db.DevelopmentKeys;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.impl.support.ResourceSupport;
  17 import org.simantics.db.service.ClusterUID;
  18
  19 final public class ResourceImpl implements Resource {
  20
  21     final public ResourceSupport support;
  22     final public int id;
  23
  24     public ResourceImpl(final ResourceSupport support, final int id) {
  25         assert(id != 0);
  26         this.support = support;
  27         this.id = id;
  28     }
  29
  30     @Override
  31     final public long getResourceId() {
  32         return support.getRandomAccessId(id);
  33     }
  34
  35     @Override
  36     public boolean isPersistent() {
  37         return id > 0;
  38     }
  39
  40     @Override
  41     public Resource get() {
  42         return this;
  43     }
  44
  45     @Override
  46     public int hashCode() {
  47         return id;
  48     }
  49
  50     @Override
  51     public int getThreadHash() {
  52         return id >>> 16;
  53     }
  54
  55     @Override
  56     public boolean equals(Object object) {
  57         if (this == object)
  58             return true;
  59         else if (object == null)
  60             return false;
  61         else if (!(object instanceof ResourceImpl))
  62             return false;
  63         ResourceImpl r = (ResourceImpl)object;
  64         return r.id == id;
  65     }
  66
  67     @Override
  68     public boolean equalsResource(Resource other) {
  69         ResourceImpl r = (ResourceImpl)other;
  70         return r.id == id;
  71     }
  72
  73     @Override
  74     public int compareTo(Resource o) {
  75         if(this==o)
  76             return 0;
  77         if(o instanceof ResourceImpl)
  78             return id - ((ResourceImpl)o).id;
  79         else
  80             return 1;
  81     }
  82
  83     @Override
  84     public String toString() {
  85         StringBuilder sb = new StringBuilder(32);
  86         try {
  87             long rid = getResourceId();
  88             if(DevelopmentKeys.VERBOSE) {
  89                 sb.append("[id=");
  90                 sb.append(id);
  91                 sb.append(" - rid=");
  92                 sb.append(rid);
  93                 sb.append(" i=");
  94                 short ri = ClusterTraitsBase.getResourceIndexFromResourceKeyNoThrow(id);
  95                 sb.append(ri);
  96                 int ck = ClusterTraitsBase.getClusterKeyFromResourceKeyNoThrow(id);
  97                 sb.append(" c=");
  98                 sb.append(ck);
  99                 sb.append("]");
 100             } else {
 101                 sb.append("[id=$");
 102                 sb.append(rid);
 103                 sb.append("]");
 104             }
 105         } catch (Exception e) {
 106             sb.append("[internal id=");
 107             sb.append(id);
 108             sb.append(", persistent resource id failed]");
 109         }
 110         return sb.toString();
 111     }
 112     public String toString(ClusterSupport support) {
 113         StringBuilder sb = new StringBuilder(32);
 114         long rid = getResourceId();
 115         if (DevelopmentKeys.VERBOSE) {
 116             sb.append("[id=");
 117             sb.append(id);
 118             sb.append(" - rid=");
 119             sb.append(rid);
 120             sb.append(" i=");
 121             short ri = ClusterTraitsBase.getResourceIndexFromResourceKeyNoThrow(id);
 122             sb.append(ri);
 123             int ck = ClusterTraitsBase.getClusterKeyFromResourceKeyNoThrow(id);
 124             sb.append(" ck=");
 125             sb.append(ck);
 126             ClusterBase cb = support.getClusterByClusterKey(ck);
 127             if (null != cb) {
 128                 ClusterUID clusterUID = cb.getClusterUID();
 129                 sb.append(" c=");
 130                 sb.append(clusterUID.toString());
 131             }
 132             sb.append("]");
 133         } else {
 134             sb.append("[id=$");
 135             sb.append(rid);
 136             sb.append("]");
 137         }
 138         return sb.toString();
 139     }
 140 }