Home

Contribute

Source code


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111

/***************************************************************************
 * Copyright (c) 2004 - 2008 Eike Stepper, Germany.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *    Simon McDuff - initial API and implementation
 **************************************************************************/
package org.eclipse.emf.cdo.internal.common.query;

import org.eclipse.emf.cdo.common.CDOProtocolView;
import org.eclipse.emf.cdo.common.query.CDOQueryInfo;
import org.eclipse.emf.cdo.common.query.CDOQueryQueue;
import org.eclipse.emf.cdo.common.util.CloseableBlockingIterator;
import org.eclipse.emf.cdo.common.util.StateConcurrentQueue;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Simon McDuff
 * @since 2.0
 */
public class AbstractQueryResult<T> implements CloseableBlockingIterator<T>
{
  private long queryID;

  private CDOProtocolView view;

  private CDOQueryInfo queryInfo;

  private StateConcurrentQueue<Object> linkQueue = new StateConcurrentQueue<Object>();

  private CloseableBlockingIterator<Object> queueItr = (CloseableBlockingIterator<Object>)linkQueue.iterator();

  public AbstractQueryResult(CDOProtocolView view, CDOQueryInfo queryInfo, long queryID)
  {
    this.queryID = queryID;
    this.view = view;
    this.queryInfo = queryInfo;
  }

  public CDOQueryInfo getQueryInfo()
  {
    return queryInfo;
  }

  public CDOQueryQueue<Object> getQueue()
  {
    return linkQueue;
  }

  public CDOProtocolView getView()
  {
    return view;
  }

  public long getQueryID()
  {
    return queryID;
  }

  public void setQueryID(long queryID)
  {
    this.queryID = queryID;
  }

  @SuppressWarnings("unchecked")
  public T peek()
  {
    return (T)queueItr.peek();
  }

  public boolean hasNext()
  {
    return queueItr.hasNext();
  }

  @SuppressWarnings("unchecked")
  public T next()
  {
    return (T)queueItr.next();
  }

  public void remove()
  {
    throw new UnsupportedOperationException();
  }

  public void close()
  {
    queueItr.close();
  }

  public boolean isClosed()
  {
    return queueItr.isClosed();
  }

  public List<T> getAsList()
  {
    ArrayList<T> result = new ArrayList<T>();
    while (hasNext())
    {
      result.add(next());
    }
    return result;
  }
}