bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/DirectStatementsImpl.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 fi.vtt.simantics.procore.internal;
  13
  14 import gnu.trove.list.array.TIntArrayList;
  15
  16 import java.util.Collection;
  17 import java.util.Iterator;
  18
  19 import org.simantics.db.DirectStatements;
  20 import org.simantics.db.Resource;
  21 import org.simantics.db.Statement;
  22 import org.simantics.db.impl.ResourceImpl;
  23 import org.simantics.db.impl.support.ResourceSupport;
  24
  25 final public class DirectStatementsImpl implements DirectStatements {
  26
  27         final ResourceSupport support;
  28         final int subject;
  29         final TIntArrayList statements = new TIntArrayList();
  30
  31         DirectStatementsImpl(ResourceSupport support, int subject) {
  32                 this.support = support;
  33                 this.subject = subject;
  34         }
  35
  36         void addStatement(int p, int o) {
  37                 statements.add(p);
  38                 statements.add(o);
  39         }
  40
  41         @Override
  42         public Resource getSubject() {
  43                 return new ResourceImpl(support, subject);
  44         }
  45
  46         @Override
  47         public boolean add(Statement arg0) {
  48                 throw new Error("Not supported");
  49         }
  50
  51         @Override
  52         public boolean addAll(Collection<? extends Statement> arg0) {
  53                 throw new Error("Not supported");
  54         }
  55
  56         @Override
  57         public void clear() {
  58                 throw new Error("Not supported");
  59         }
  60
  61         @Override
  62         public boolean contains(Object arg0) {
  63         Statement stm = (Statement)arg0;
  64         ResourceImpl p = (ResourceImpl)stm.getPredicate();
  65         ResourceImpl o = (ResourceImpl)stm.getObject();
  66         for(int i=0;i<statements.size();i+=2) {
  67             int pi = statements.getQuick(i);
  68             int oi = statements.getQuick(i+1);
  69             if(p.id == pi && o.id == oi) return true;
  70         }
  71         return false;
  72         }
  73
  74         @Override
  75         public boolean containsAll(Collection<?> arg0) {
  76                 throw new Error("Not supported");
  77         }
  78
  79         @Override
  80         public boolean isEmpty() {
  81                 throw new Error("Not supported");
  82         }
  83
  84         @Override
  85         public Iterator<Statement> iterator() {
  86                 return new Iterator<Statement>() {
  87
  88                         int index = 0;
  89                         int max = statements.size();
  90
  91                         @Override
  92                         public boolean hasNext() {
  93                                 return index < max;
  94                         }
  95
  96                         @Override
  97                         public Statement next() {
  98                                 return new DirectStatementImpl(support, subject, statements.getQuick(index++), statements.getQuick(index++));
  99                         }
 100
 101                         @Override
 102                         public void remove() {
 103                                 throw new Error("Not supported");
 104                         }
 105
 106                 };
 107         }
 108
 109         @Override
 110         public boolean remove(Object arg0) {
 111                 throw new Error("Not supported");
 112         }
 113
 114         @Override
 115         public boolean removeAll(Collection<?> arg0) {
 116                 throw new Error("Not supported");
 117         }
 118
 119         @Override
 120         public boolean retainAll(Collection<?> arg0) {
 121                 throw new Error("Not supported");
 122         }
 123
 124         @Override
 125         public int size() {
 126                 return statements.size() >> 1;
 127         }
 128
 129         @Override
 130         public Object[] toArray() {
 131                 throw new Error("Not supported");
 132         }
 133
 134         @Override
 135         public <T> T[] toArray(T[] arg0) {
 136                 throw new Error("Not supported");
 137         }
 138
 139 }