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21 package org.apache.directory.mavibot.btree;
22
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24 import static org.junit.Assert.assertEquals;
25
26 import java.io.File;
27 import java.util.ArrayList;
28 import java.util.List;
29
30 import org.apache.directory.mavibot.btree.BTree;
31 import org.apache.directory.mavibot.btree.PersistedBTreeBuilder;
32 import org.apache.directory.mavibot.btree.RecordManager;
33 import org.apache.directory.mavibot.btree.Tuple;
34 import org.apache.directory.mavibot.btree.TupleCursor;
35 import org.apache.directory.mavibot.btree.serializer.IntSerializer;
36 import org.junit.Test;
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44 public class PersistedBTreeBuilderTest
45 {
46
47 @Test
48 public void testManagedBTreeBuilding() throws Exception
49 {
50 List<Tuple<Integer, Integer>> sortedTuple = new ArrayList<Tuple<Integer, Integer>>();
51
52 for ( int i = 1; i < 8; i++ )
53 {
54 Tuple<Integer, Integer> t = new Tuple<Integer, Integer>( i, i );
55 sortedTuple.add( t );
56 }
57
58 File file = File.createTempFile( "managedbtreebuilder", ".data" );
59 file.deleteOnExit();
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61 RecordManager rm = new RecordManager( file.getAbsolutePath() );
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63 IntSerializer ser = new IntSerializer();
64 PersistedBTreeBuilder<Integer, Integer> bb = new PersistedBTreeBuilder<Integer, Integer>( rm, "master", 4, ser,
65 ser );
66
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68 BTree<Integer, Integer> btree = bb.build( sortedTuple.iterator() );
69
70 rm.close();
71
72 rm = new RecordManager( file.getAbsolutePath() );
73 btree = rm.getManagedTree( "master" );
74
75 assertEquals( 1, btree.getRootPage().getNbElems() );
76
77 assertEquals( 7, btree.getRootPage().findRightMost().getKey().intValue() );
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79 assertEquals( 1, btree.getRootPage().findLeftMost().getKey().intValue() );
80
81 TupleCursor<Integer, Integer> cursor = btree.browse();
82 int i = 0;
83
84 while ( cursor.hasNext() )
85 {
86 Tuple<Integer, Integer> expected = sortedTuple.get( i++ );
87 Tuple<Integer, Integer> actual = cursor.next();
88 assertEquals( expected.getKey(), actual.getKey() );
89 assertEquals( expected.getValue(), actual.getValue() );
90 }
91
92 cursor.close();
93 btree.close();
94 }
95 }