protected override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter = null)
{
var v = (NpgsqlPoint)value;
buf.WriteDouble(v.X);
buf.WriteDouble(v.Y);
}
public override bool Write(ref DirectBuffer directBuf)
{
if (_index == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(_value.Count);
_index = 0;
}
for (; _index < _value.Count; _index++)
{
if (_writeBuf.WriteSpaceLeft < 16)
{
return(false);
}
var p = _value[_index];
_writeBuf.WriteDouble(p.X);
_writeBuf.WriteDouble(p.Y);
}
_writeBuf = null;
_value = default(NpgsqlPolygon);
return(true);
}
public override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter)
{
var v = (NpgsqlCircle)value;
buf.WriteDouble(v.X);
buf.WriteDouble(v.Y);
buf.WriteDouble(v.Radius);
}
protected override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter = null)
{
var v = (NpgsqlLine)value;
buf.WriteDouble(v.A);
buf.WriteDouble(v.B);
buf.WriteDouble(v.C);
}
protected override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter = null)
{
var v = (NpgsqlBox)value;
buf.WriteDouble(v.Right);
buf.WriteDouble(v.Top);
buf.WriteDouble(v.Left);
buf.WriteDouble(v.Bottom);
}
protected override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter = null)
{
var v = (NpgsqlLSeg)value;
buf.WriteDouble(v.Start.X);
buf.WriteDouble(v.Start.Y);
buf.WriteDouble(v.End.X);
buf.WriteDouble(v.End.Y);
}
public override void Write(object value, WriteBuffer buf, NpgsqlParameter parameter)
{
if (parameter?.ConvertedValue != null)
{
value = parameter.ConvertedValue;
}
buf.WriteDouble((double)value);
}
protected override async Task Write(object value, WriteBuffer buf, LengthCache lengthCache, NpgsqlParameter parameter,
bool async, CancellationToken cancellationToken)
{
var polygon = (NpgsqlPolygon)value;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(polygon.Count);
foreach (var p in polygon)
{
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteDouble(p.X);
buf.WriteDouble(p.Y);
}
}
protected override async Task Write(object value, WriteBuffer buf, LengthCache lengthCache, NpgsqlParameter parameter,
bool async, CancellationToken cancellationToken)
{
var path = (NpgsqlPath)value;
if (buf.WriteSpaceLeft < 5)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte((byte)(path.Open ? 0 : 1));
buf.WriteInt32(path.Count);
foreach (var p in path)
{
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteDouble(p.X);
buf.WriteDouble(p.Y);
}
}
bool Write(PostgisGeometry geom)
{
if (_newGeom & _icol.Count == 0)
{
if (geom.SRID == 0)
{
if (_writeBuf.WriteSpaceLeft < 5)
{
return(false);
}
_writeBuf.WriteByte(0); // We choose to ouput only XDR structure
_writeBuf.WriteInt32((int)geom.Identifier);
}
else
{
if (_writeBuf.WriteSpaceLeft < 9)
{
return(false);
}
_writeBuf.WriteByte(0);
_writeBuf.WriteInt32((int)((uint)geom.Identifier | (uint)EwkbModifier.HasSRID));
_writeBuf.WriteInt32((int)geom.SRID);
}
_newGeom = false;
}
switch (geom.Identifier)
{
case WkbIdentifier.Point:
if (_writeBuf.WriteSpaceLeft < 16)
{
return(false);
}
var p = (PostgisPoint)geom;
_writeBuf.WriteDouble(p.X);
_writeBuf.WriteDouble(p.Y);
return(true);
case WkbIdentifier.LineString:
var l = (PostgisLineString)geom;
if (_ipts == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(l.PointCount);
_ipts = 0;
}
for (; _ipts < l.PointCount; _ipts++)
{
if (_writeBuf.WriteSpaceLeft < 16)
{
return(false);
}
_writeBuf.WriteDouble(l[_ipts].X);
_writeBuf.WriteDouble(l[_ipts].Y);
}
return(true);
case WkbIdentifier.Polygon:
var pol = (PostgisPolygon)geom;
if (_irng == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(pol.RingCount);
_irng = 0;
}
for (; _irng < pol.RingCount; _irng++)
{
if (_ipts == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(pol[_irng].Length);
_ipts = 0;
}
for (; _ipts < pol[_irng].Length; _ipts++)
{
if (_writeBuf.WriteSpaceLeft < 16)
{
return(false);
}
_writeBuf.WriteDouble(pol[_irng][_ipts].X);
_writeBuf.WriteDouble(pol[_irng][_ipts].Y);
}
_ipts = -1;
}
return(true);
case WkbIdentifier.MultiPoint:
var mp = (PostgisMultiPoint)geom;
if (_ipts == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(mp.PointCount);
_ipts = 0;
}
for (; _ipts < mp.PointCount; _ipts++)
{
if (_writeBuf.WriteSpaceLeft < 21)
{
return(false);
}
_writeBuf.WriteByte(0);
_writeBuf.WriteInt32((int)WkbIdentifier.Point);
_writeBuf.WriteDouble(mp[_ipts].X);
_writeBuf.WriteDouble(mp[_ipts].Y);
}
return(true);
case WkbIdentifier.MultiLineString:
var ml = (PostgisMultiLineString)geom;
if (_irng == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(ml.LineCount);
_irng = 0;
}
for (; _irng < ml.LineCount; _irng++)
{
if (_ipts == -1)
{
if (_writeBuf.WriteSpaceLeft < 9)
{
return(false);
}
_writeBuf.WriteByte(0);
_writeBuf.WriteInt32((int)WkbIdentifier.LineString);
_writeBuf.WriteInt32(ml[_irng].PointCount);
_ipts = 0;
}
for (; _ipts < ml[_irng].PointCount; _ipts++)
{
if (_writeBuf.WriteSpaceLeft < 16)
{
return(false);
}
_writeBuf.WriteDouble(ml[_irng][_ipts].X);
_writeBuf.WriteDouble(ml[_irng][_ipts].Y);
}
_ipts = -1;
}
return(true);
case WkbIdentifier.MultiPolygon:
var mpl = (PostgisMultiPolygon)geom;
if (_ipol == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(mpl.PolygonCount);
_ipol = 0;
}
for (; _ipol < mpl.PolygonCount; _ipol++)
{
if (_irng == -1)
{
if (_writeBuf.WriteSpaceLeft < 9)
{
return(false);
}
_writeBuf.WriteByte(0);
_writeBuf.WriteInt32((int)WkbIdentifier.Polygon);
_writeBuf.WriteInt32(mpl[_ipol].RingCount);
_irng = 0;
}
for (; _irng < mpl[_ipol].RingCount; _irng++)
{
if (_ipts == -1)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(mpl[_ipol][_irng].Length);
_ipts = 0;
}
for (; _ipts < mpl[_ipol][_irng].Length; _ipts++)
{
if (_writeBuf.WriteSpaceLeft < 16)
{
return(false);
}
_writeBuf.WriteDouble(mpl[_ipol][_irng][_ipts].X);
_writeBuf.WriteDouble(mpl[_ipol][_irng][_ipts].Y);
}
_ipts = -1;
}
_irng = -1;
}
_ipol = -1;
return(true);
case WkbIdentifier.GeometryCollection:
var coll = (PostgisGeometryCollection)geom;
if (_icol.Count == 0)
{
if (_writeBuf.WriteSpaceLeft < 4)
{
return(false);
}
_writeBuf.WriteInt32(coll.GeometryCount);
_newGeom = true;
}
for (var i = _icol.Count > 0 ? _icol.Pop() : 0; i < coll.GeometryCount; i++)
{
if (!Write(coll[i]))
{
_icol.Push(i);
return(false);
}
Reset();
}
return(true);
default:
throw new InvalidOperationException("Unknown Postgis identifier.");
}
}
async Task Write(PostgisGeometry geom, WriteBuffer buf, LengthCache lengthCache, NpgsqlParameter parameter,
bool async, CancellationToken cancellationToken)
{
// Common header
if (geom.SRID == 0)
{
if (buf.WriteSpaceLeft < 5)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte(0); // We choose to ouput only XDR structure
buf.WriteInt32((int)geom.Identifier);
}
else
{
if (buf.WriteSpaceLeft < 9)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte(0);
buf.WriteInt32((int)((uint)geom.Identifier | (uint)EwkbModifiers.HasSRID));
buf.WriteInt32((int)geom.SRID);
}
switch (geom.Identifier)
{
case WkbIdentifier.Point:
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
var p = (PostgisPoint)geom;
buf.WriteDouble(p.X);
buf.WriteDouble(p.Y);
return;
case WkbIdentifier.LineString:
var l = (PostgisLineString)geom;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(l.PointCount);
for (var ipts = 0; ipts < l.PointCount; ipts++)
{
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteDouble(l[ipts].X);
buf.WriteDouble(l[ipts].Y);
}
return;
case WkbIdentifier.Polygon:
var pol = (PostgisPolygon)geom;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(pol.RingCount);
for (var irng = 0; irng < pol.RingCount; irng++)
{
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(pol[irng].Length);
for (var ipts = 0; ipts < pol[irng].Length; ipts++)
{
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteDouble(pol[irng][ipts].X);
buf.WriteDouble(pol[irng][ipts].Y);
}
}
return;
case WkbIdentifier.MultiPoint:
var mp = (PostgisMultiPoint)geom;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(mp.PointCount);
for (var ipts = 0; ipts < mp.PointCount; ipts++)
{
if (buf.WriteSpaceLeft < 21)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte(0);
buf.WriteInt32((int)WkbIdentifier.Point);
buf.WriteDouble(mp[ipts].X);
buf.WriteDouble(mp[ipts].Y);
}
return;
case WkbIdentifier.MultiLineString:
var ml = (PostgisMultiLineString)geom;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(ml.LineCount);
for (var irng = 0; irng < ml.LineCount; irng++)
{
if (buf.WriteSpaceLeft < 9)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte(0);
buf.WriteInt32((int)WkbIdentifier.LineString);
buf.WriteInt32(ml[irng].PointCount);
for (var ipts = 0; ipts < ml[irng].PointCount; ipts++)
{
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteDouble(ml[irng][ipts].X);
buf.WriteDouble(ml[irng][ipts].Y);
}
}
return;
case WkbIdentifier.MultiPolygon:
var mpl = (PostgisMultiPolygon)geom;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(mpl.PolygonCount);
for (var ipol = 0; ipol < mpl.PolygonCount; ipol++)
{
if (buf.WriteSpaceLeft < 9)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteByte(0);
buf.WriteInt32((int)WkbIdentifier.Polygon);
buf.WriteInt32(mpl[ipol].RingCount);
for (var irng = 0; irng < mpl[ipol].RingCount; irng++)
{
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(mpl[ipol][irng].Length);
for (var ipts = 0; ipts < mpl[ipol][irng].Length; ipts++)
{
if (buf.WriteSpaceLeft < 16)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteDouble(mpl[ipol][irng][ipts].X);
buf.WriteDouble(mpl[ipol][irng][ipts].Y);
}
}
}
return;
case WkbIdentifier.GeometryCollection:
var coll = (PostgisGeometryCollection)geom;
if (buf.WriteSpaceLeft < 4)
{
await buf.Flush(async, cancellationToken);
}
buf.WriteInt32(coll.GeometryCount);
foreach (var x in coll)
{
await Write(x, buf, lengthCache, null, async, cancellationToken);
}
return;
default:
throw new InvalidOperationException("Unknown Postgis identifier.");
}
}
