iProvider.cs
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- // Copyright 2005, 2006 - Morten Nielsen (www.iter.dk)
- //
- // This file is part of SharpMap.
- // SharpMap 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 of the License, or
- // (at your option) any later version.
- //
- // SharpMap 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 SharpMap; if not, write to the Free Software
- // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- using System;
- using System.Collections.Generic;
- using System.Collections.ObjectModel;
- using System.Text;
- namespace SharpMap.Data.Providers
- {
- /// <summary>
- /// Interface for data providers
- /// </summary>
- public interface IProvider : IDisposable
- {
- /// <summary>
- /// Gets the features within the specified <see cref="SharpMap.Geometries.BoundingBox"/>
- /// </summary>
- /// <param name="bbox"></param>
- /// <returns>Features within the specified <see cref="SharpMap.Geometries.BoundingBox"/></returns>
- System.Collections.ObjectModel.Collection<SharpMap.Geometries.Geometry> GetGeometriesInView(SharpMap.Geometries.BoundingBox bbox);
- /// <summary>
- /// Returns all objects whose <see cref="SharpMap.Geometries.BoundingBox"/> intersects 'bbox'.
- /// </summary>
- /// <remarks>
- /// This method is usually much faster than the QueryFeatures method, because intersection tests
- /// are performed on objects simplifed by their <see cref="SharpMap.Geometries.BoundingBox"/>, and using the Spatial Index
- /// </remarks>
- /// <param name="bbox">Box that objects should intersect</param>
- /// <returns></returns>
- System.Collections.ObjectModel.Collection<uint> GetObjectIDsInView(SharpMap.Geometries.BoundingBox bbox);
- /// <summary>
- /// Returns the geometry corresponding to the Object ID
- /// </summary>
- /// <param name="oid">Object ID</param>
- /// <returns>geometry</returns>
- SharpMap.Geometries.Geometry GetGeometryByID(uint oid);
-
- /// <summary>
- /// Returns the data associated with all the geometries that are intersected by 'geom'
- /// </summary>
- /// <param name="geom">Geometry to intersect with</param>
- /// <param name="ds">FeatureDataSet to fill data into</param>
- void ExecuteIntersectionQuery(SharpMap.Geometries.Geometry geom, FeatureDataSet ds);
- /// <summary>
- /// Returns the data associated with all the geometries that are intersected by 'geom'
- /// </summary>
- /// <param name="box">Geometry to intersect with</param>
- /// <param name="ds">FeatureDataSet to fill data into</param>
- void ExecuteIntersectionQuery(SharpMap.Geometries.BoundingBox box, FeatureDataSet ds);
- /// <summary>
- /// Returns the number of features in the dataset
- /// </summary>
- /// <returns>number of features</returns>
- int GetFeatureCount();
- /// <summary>
- /// Returns a <see cref="SharpMap.Data.FeatureDataRow"/> based on a RowID
- /// </summary>
- /// <param name="RowID"></param>
- /// <returns>datarow</returns>
- SharpMap.Data.FeatureDataRow GetFeature(uint RowID);
-
- /// <summary>
- /// <see cref="SharpMap.Geometries.BoundingBox"/> of dataset
- /// </summary>
- /// <returns>boundingbox</returns>
- SharpMap.Geometries.BoundingBox GetExtents();
- /// <summary>
- /// Gets the connection ID of the datasource
- /// </summary>
- /// <remarks>
- /// <para>The ConnectionID should be unique to the datasource (for instance the filename or the
- /// connectionstring), and is meant to be used for connection pooling.</para>
- /// <para>If connection pooling doesn't apply to this datasource, the ConnectionID should return String.Empty</para>
- /// </remarks>
- string ConnectionID { get; }
- /// <summary>
- /// Opens the datasource
- /// </summary>
- void Open();
- /// <summary>
- /// Closes the datasource
- /// </summary>
- void Close();
- /// <summary>
- /// Returns true if the datasource is currently open
- /// </summary>
- bool IsOpen { get; }
- /// <summary>
- /// The spatial reference ID (CRS)
- /// </summary>
- int SRID { get; set;}
- }
- }