public DbaseFileEnumerator(DbaseFileReader parent)
{
_parent = parent;
FileStream stream = new FileStream(parent._filename, FileMode.Open, FileAccess.Read, FileShare.Read);
_dbfStream = new BinaryReader(stream);
ReadHeader();
}
public void Test_TestProperties()
{
DbaseFileReader dbfReader = new DbaseFileReader(Global.GetUnitTestRootDirectory()+@"\IO\Shapefile\Testfiles\statepop.dbf");
DbaseFileHeader dbfHeader = dbfReader.GetHeader();
Assertion.AssertEquals("Dbase header: Num records", 49, dbfHeader.NumRecords);
Assertion.AssertEquals("Dbase header: Num fields", 252, dbfHeader.NumFields);
Assertion.AssertEquals("Field 0: name", "STATE_NAME", dbfHeader.Fields[0].Name);
Assertion.AssertEquals("Field 0: name", 'C', dbfHeader.Fields[0].DbaseType);
Assertion.AssertEquals("Field 0: name", typeof(string), dbfHeader.Fields[0].Type);
Assertion.AssertEquals("Field 0: name", 25, dbfHeader.Fields[0].Length);
Assertion.AssertEquals("Field 251: name", "SAMP_POP", dbfHeader.Fields[251].Name);
Assertion.AssertEquals("Field 251: name", 'N', dbfHeader.Fields[251].DbaseType);
Assertion.AssertEquals("Field 251: name", typeof(double), dbfHeader.Fields[251].Type);
Assertion.AssertEquals("Field 251: name", 19, dbfHeader.Fields[251].Length);
// note alaska and hawaii are missing - hence 48 states not 50.
int i=0;
foreach(ArrayList columnValues in dbfReader)
{
if (i==0)
{
Assertion.AssertEquals("Row1: STATE_NAME:","Illinois", columnValues[0]);
Assertion.AssertEquals("Row1: STATE_FIPS:","17", columnValues[1].ToString());
Assertion.AssertEquals("Row1: SAMP_POP", 1747776.0, columnValues[251]);
}
if (i==48)
{
Assertion.AssertEquals("Row1: STATE_NAME:","Washington", columnValues[0]);
Assertion.AssertEquals("Row1: STATE_FIPS:","53", columnValues[1].ToString());
Assertion.AssertEquals("Row1: SAMP_POP", 736744.0, columnValues[251]);
}
i++;
}
Assertion.AssertEquals("48 Records",48,i-1);
DbaseFileReader dbfReader2 = new DbaseFileReader(Global.GetUnitTestRootDirectory()+@"\IO\Shapefile\Testfiles\statepop.dbf");
i=0;
foreach(ArrayList columnValues in dbfReader2)
{
if (i==0)
{
Assertion.AssertEquals("Row1: STATE_NAME:","Illinois", columnValues[0]);
Assertion.AssertEquals("Row1: STATE_FIPS:","17", columnValues[1].ToString());
Assertion.AssertEquals("Row1: SAMP_POP", 1747776.0, columnValues[251]);
}
if (i==48)
{
Assertion.AssertEquals("Row1: STATE_NAME:","Washington", columnValues[0]);
Assertion.AssertEquals("Row1: STATE_FIPS:","53", columnValues[1].ToString());
Assertion.AssertEquals("Row1: SAMP_POP", 736744.0, columnValues[251]);
}
i++;
}
Assertion.AssertEquals("48 Records",48,i-1);
}
/// <summary>
/// Tests the constructor
/// </summary>
public void Test_Constructor()
{
try
{
DbaseFileReader dbfReader = new DbaseFileReader(null);
}
catch (ArgumentNullException)
{
}
}
public DataTable Query(Envelope extents)
{
DataTable table = this.GetDataTable();
ArrayList indexes = new ArrayList(_spatialIndex.query(extents).toArray());
// Sort the results so we can go through the files sequentially
indexes.Sort();
ShapeHandler handler = null;
switch (_type)
{
case ShapeType.Point:
handler = new PointHandler();
break;
case ShapeType.Arc:
handler = new MultiLineHandler();
break;
case ShapeType.Polygon:
handler = new PolygonHandler();
break;
}
using (BinaryReader dbfReader = new BinaryReader(File.OpenRead(Path.Combine(Path.GetDirectoryName(_path), Path.GetFileNameWithoutExtension(_path) + ".dbf"))))
using (BigEndianBinaryReader shpReader = new BigEndianBinaryReader(File.OpenRead(_path)))
{
foreach (ShapefileRecordPointer pointer in indexes)
{
ArrayList record = new ArrayList();
// Step 1: Get the geometry
// NOTE: We add 8 here to skip the content length and record numer - we
// already have that information in the pointer object.
shpReader.BaseStream.Position = pointer.GeometryOffset + 8;
record.Add(handler.Read(shpReader, _factory));
// Step 2: Get the attributes
dbfReader.BaseStream.Position = pointer.AttributesOffset;
record.AddRange(DbaseFileReader.ReadRecord(dbfReader, _dbfHeader));
table.Rows.Add(record.ToArray());
}
}
return(table);
}
//byte[] _wkb;
// GeometryWKBWriter _wkbWriter;
#region Constructors
/// <summary>
/// Initializes a new instance of the ShapefileDataReader class.
/// </summary>
/// <param name="filename">The shapefile to read (minus the .shp extension)</param>
///<param name="geometryFactory">The GeometryFactory to use.</param>
public ShapefileDataReader(string filename, GeometryFactory geometryFactory)
{
if (filename == null)
{
throw new ArgumentNullException("filename");
}
if (geometryFactory == null)
{
throw new ArgumentNullException("geometryFactory");
}
_geometryFactory = geometryFactory;
_open = true;
if (filename.ToLower().EndsWith(".shp"))
{
filename = filename.ToLower().Replace(".shp", "");
}
_dbfReader = new DbaseFileReader(filename + ".dbf");
_shpReader = new ShapefileReader(filename + ".shp", geometryFactory);
_dbfHeader = _dbfReader.GetHeader();
_recordCount = _dbfHeader.NumRecords;
// _wkbWriter = new GeometryWKBWriter(_geometryFactory);
// copy dbase fields to our own array. Insert into the first position, the shape column
_dbaseFields = new DbaseFieldDescriptor[_dbfHeader.Fields.Length + 1];
_dbaseFields[0] = DbaseFieldDescriptor.ShapeField();
//_dbaseFields[1] = DbaseFieldDescriptor.IdField();
for (int i = 0; i < _dbfHeader.Fields.Length; i++)
{
_dbaseFields[i + 1] = _dbfHeader.Fields[i];
}
_shpHeader = _shpReader.Header;
_dbfEnumerator = _dbfReader.GetEnumerator();
_shpEnumerator = _shpReader.GetEnumerator();
_moreRecords = true;
}
public void Test_Constructor()
{
DbaseFileReader dbfReader = new DbaseFileReader(null);
}
/// <summary>
/// Read a single dbase record
/// </summary>
/// <returns>return the read shapefile record or null if there are no more records</returns>
private ArrayList Read()
{
return(DbaseFileReader.ReadRecord(_dbfStream, _header));
}
public DbaseFileEnumerator(DbaseFileReader parent)
{
_parent = parent;
_dbfStream = new BinaryReader(File.OpenRead(parent._filename));
ReadHeader();
}
public DbaseFileEnumerator(DbaseFileReader parent)
{
_parent = parent;
_dbfStream = new BinaryReader(File.OpenRead(parent._filename));
ReadHeader();
}
/// <summary>
/// Initializes a new instance of the ShapefileDataReader class.
/// </summary>
/// <param name="filename">The shapefile to read (minus the .shp extension)</param>
///<param name="geometryFactory">The GeometryFactory to use.</param>
public ShapefileDataReader(string filename, GeometryFactory geometryFactory)
{
if (filename==null)
{
throw new ArgumentNullException("filename");
}
if (geometryFactory==null)
{
throw new ArgumentNullException("geometryFactory");
}
_geometryFactory = geometryFactory;
_open=true;
if (filename.ToLower().EndsWith(".shp"))
{
filename = filename.ToLower().Replace(".shp","");
}
_dbfReader = new DbaseFileReader(filename+".dbf");
_shpReader = new ShapefileReader(filename+".shp", geometryFactory);
_dbfHeader = _dbfReader.GetHeader();
_recordCount = _dbfHeader.NumRecords;
// _wkbWriter = new GeometryWKBWriter(_geometryFactory);
// copy dbase fields to our own array. Insert into the first position, the shape column
_dbaseFields = new DbaseFieldDescriptor[_dbfHeader.Fields.Length + 1];
_dbaseFields[0] = DbaseFieldDescriptor.ShapeField();
//_dbaseFields[1] = DbaseFieldDescriptor.IdField();
for(int i=0; i < _dbfHeader.Fields.Length; i++)
{
_dbaseFields[i+1] = _dbfHeader.Fields[i];
}
_shpHeader = _shpReader.Header;
_dbfEnumerator = _dbfReader.GetEnumerator();
_shpEnumerator = _shpReader.GetEnumerator();
_moreRecords = true;
}
