Package com.vividsolutions.jts.io.oracle

Source Code of com.vividsolutions.jts.io.oracle.StaticLineStringTest

/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
* For more information, contact:
*
*     Vivid Solutions
*     Suite #1A
*     2328 Government Street
*     Victoria BC  V8T 5G5
*     Canada
*
*     (250)385-6040
*     www.vividsolutions.com
*/
package com.vividsolutions.jts.io.oracle;

import java.sql.SQLException;

import oracle.sql.STRUCT;

import com.vividsolutions.jts.generator.*;
import com.vividsolutions.jts.geom.*;

/**
*
* Does round trip testing by creating the oracle object, then decoding it.
*
* These tests do not include insert / delete / select operations.
*
* NOTE: This test does require a precision to be used during the comparison,
* as points are rounded somewhat when creating the oracle struct.
* (One less decimal than a java double).
*
* @author David Zwiers, Vivid Solutions.
*/
public class StaticLineStringTest extends ConnectedTestCase {

  /**
   * @param arg
   */
  public StaticLineStringTest(String arg) {
    super(arg);
  }

  /**
   * Round Trip test for a single line string
   * @throws SQLException
   */
  public void testSingleLineStringRoundTrip() throws SQLException{
    LineStringGenerator pg = new LineStringGenerator();
    pg.setGeometryFactory(geometryFactory);
    pg.setBoundingBox(new Envelope(0,10,0,10));
    pg.setNumberPoints(10);
   
    LineString pt = (LineString) pg.create();
   
    OraWriter ow = new OraWriter(getConnection());
    STRUCT st = ow.write(pt);
   
    OraReader or = new OraReader();
    LineString pt2 = (LineString) or.read(st);
   
//    System.out.println((pt==null?"NULL":pt.toString()));
//    System.out.println((pt2==null?"NULL":pt2.toString()));
    assertTrue("The input LineString is not the same as the output LineString",pt.equals(pt2));
  }

  /**
   * Round Trip test for a 100 non overlapping line strings
   * @throws SQLException
   */
  public void testGridLineStringsRoundTrip() throws SQLException{
    GridGenerator grid = new GridGenerator();
    grid.setGeometryFactory(geometryFactory);
    grid.setBoundingBox(new Envelope(0,10,0,10));
    grid.setNumberColumns(10);
    grid.setNumberRows(10);
   
    LineString[] pt = new LineString[100];
    STRUCT[] st = new STRUCT[100];

    LineStringGenerator pg = new LineStringGenerator();
    pg.setGeometryFactory(geometryFactory);
    pg.setNumberPoints(10);
    OraWriter ow = new OraWriter(getConnection());
   
    int i=0;
    while(grid.canCreate() && i<100){
      pg.setBoundingBox(grid.createEnv());
      pt[i] = (LineString) pg.create();
      st[i] = ow.write(pt[i]);
      i++;
    }
   
    OraReader or = new OraReader();
    i=0;
    while(i<100 && pt[i] != null){
      LineString pt2 = (LineString) or.read(st[i]);
//      System.out.println((pt[i]==null?"NULL":pt[i].toString()));
//      System.out.println((pt2==null?"NULL":pt2.toString()));
      assertTrue("The input LineString is not the same as the output LineString",pt[i].equals(pt2));
      i++;
    }
  }

  /**
   * Round Trip test for a 8 overlapping line strings (4 distinct line strings)
   * @throws SQLException
   */
  public void testOverlappingLineStringsRoundTrip() throws SQLException{
    GridGenerator grid = new GridGenerator();
    grid.setGeometryFactory(geometryFactory);
    grid.setBoundingBox(new Envelope(0,10,0,10));
    grid.setNumberColumns(2);
    grid.setNumberRows(2);
   
    LineString[] pt = new LineString[4];
    STRUCT[] st = new STRUCT[8];

    LineStringGenerator pg = new LineStringGenerator();
    pg.setGeometryFactory(geometryFactory);
    pg.setNumberPoints(10);
    OraWriter ow = new OraWriter(getConnection());
   
    int i=0;
    while(grid.canCreate() && i<8){
      pg.setBoundingBox(grid.createEnv());
      pt[i] = (LineString) pg.create();
      st[i] = ow.write(pt[i]);
      i++;
    }
    for(int j=0;j<4;j++){
      if(pt[j]!=null)
        st[i++] = ow.write(pt[j]);
    }
   
    OraReader or = new OraReader();
    i=0;
    while(i<8 && pt[i%4] != null){
      LineString pt2 = (LineString) or.read(st[i]);
//      System.out.println((pt==null?"NULL":pt[i%4].toString()));
//      System.out.println((pt2==null?"NULL":pt2.toString()));
      assertTrue("The input LineString is not the same as the output LineString",pt[i%4].equals(pt2));
      i++;
    }
  }

  /**
   * Round Trip test for a single line string with lotsa points
   * @throws SQLException
   */
  public void testSingleLineStringManyPointRoundTrip() throws SQLException{
    LineStringGenerator pg = new LineStringGenerator();
    pg.setGeometryFactory(geometryFactory);
    pg.setBoundingBox(new Envelope(0,10,0,10));
    pg.setGenerationAlgorithm(LineStringGenerator.HORZ);
    pg.setNumberPoints(1000);
   
    LineString pt = (LineString) pg.create();
//    System.out.println((pt==null?"NULL":pt.toString()));
   
    OraWriter ow = new OraWriter(getConnection());
    STRUCT st = ow.write(pt);
   
    OraReader or = new OraReader();
    LineString pt2 = (LineString) or.read(st);

//    System.out.println((pt==null?"NULL":pt.toString()));
//    System.out.println((pt2==null?"NULL":pt2.toString()));
    assertTrue("The input LineString is not the same as the output LineString",pt.equals(pt2));
  }
}
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