Examples of nexj.core.persistence.Query.openCursor()

nexj.core.persistence.Query.openCursor()
Opens a cursor on the instances specified by the query. @return The cursor.


      AssertUtil.assertEquals(getURL("readAssocWhere2.xml"), list, attributes);


      query.setMaxCount(1000000);


      Cursor cursor = query.openCursor();


      try
      {
         int i = 0;

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      attributes = parse("((: c (* 2 (count (@)))))");
      query = Query.createAggregate(getMetadata().getMetaclass("Contact"), attributes, 
         parse("(= classCode \"CON\")"), parse("(addresses)"), null,
         parse("((addresses . #t))"), -1, 0, Query.SEC_NONE, m_context);
      cursor = query.openCursor();


      try
      {
         AssertUtil.assertEquals(getURL("readGroupByCursorCol.xml"), cursor.next(1024), attributes);
      }

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   public void testConcurrentResultSets()
   {
      Query query = Query.createRead(getMetadata().getMetaclass("Contact"), parse("(firstName)"),
                                     null, null, -1, 0, false, Query.SEC_NONE, m_context);
      Cursor cursor1 = query.openCursor();
      Cursor cursor2 = query.openCursor();


      assertTrue(cursor2.next(-1).size() > 0);
      assertTrue(cursor1.next(-1).size() > 0);
      cursor1.close();

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   public void testConcurrentResultSets()
   {
      Query query = Query.createRead(getMetadata().getMetaclass("Contact"), parse("(firstName)"),
                                     null, null, -1, 0, false, Query.SEC_NONE, m_context);
      Cursor cursor1 = query.openCursor();
      Cursor cursor2 = query.openCursor();


      assertTrue(cursor2.next(-1).size() > 0);
      assertTrue(cursor1.next(-1).size() > 0);
      cursor1.close();
      cursor2.close();

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