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InsertCommand.cs
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/
InsertCommand.cs
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/*
// <copyright>
// dotNetRDF is free and open source software licensed under the MIT License
// -------------------------------------------------------------------------
//
// Copyright (c) 2009-2023 dotNetRDF Project (http://dotnetrdf.org/)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is furnished
// to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using VDS.RDF.Query.Optimisation;
using VDS.RDF.Query.Patterns;
using VDS.RDF.Writing.Formatting;
namespace VDS.RDF.Update.Commands
{
/// <summary>
/// Represents a SPARQL Update INSERT command.
/// </summary>
public class InsertCommand
: BaseModificationCommand
{
/// <summary>
/// Creates a new INSERT command.
/// </summary>
/// <param name="insertions">Pattern to construct Triples to insert.</param>
/// <param name="where">Pattern to select data which is then used in evaluating the insertions.</param>
/// <param name="graphName">Name of the affected Graph.</param>
public InsertCommand(GraphPattern insertions, GraphPattern where, IRefNode graphName) : base(
SparqlUpdateCommandType.Insert)
{
InsertPattern = insertions;
WherePattern = where;
WithGraphName = graphName;
}
/// <summary>
/// Creates a new INSERT command.
/// </summary>
/// <param name="insertions">Pattern to construct Triples to insert.</param>
/// <param name="where">Pattern to select data which is then used in evaluating the insertions.</param>
/// <param name="graphUri">URI of the affected Graph.</param>
[Obsolete("Replaced by InsertCommand(GraphPattern, GraphPattern, IRefNode)")]
public InsertCommand(GraphPattern insertions, GraphPattern where, Uri graphUri)
: this(insertions, where, graphUri == null ? null : new UriNode(graphUri))
{
}
/// <summary>
/// Creates a new INSERT command which operates on the Default Graph.
/// </summary>
/// <param name="insertions">Pattern to construct Triples to insert.</param>
/// <param name="where">Pattern to select data which is then used in evaluating the insertions.</param>
public InsertCommand(GraphPattern insertions, GraphPattern where)
: this(insertions, where, (IRefNode)null) { }
/// <summary>
/// Gets whether the Command affects a single Graph.
/// </summary>
public override bool AffectsSingleGraph
{
get
{
var affectedUris = new List<string>();
if (TargetGraph != null)
{
affectedUris.Add(TargetGraph.ToSafeString());
}
if (InsertPattern.IsGraph) affectedUris.Add(InsertPattern.GraphSpecifier.Value);
if (InsertPattern.HasChildGraphPatterns)
{
affectedUris.AddRange(from p in InsertPattern.ChildGraphPatterns
where p.IsGraph
select p.GraphSpecifier.Value);
}
return affectedUris.Distinct().Count() <= 1;
}
}
/// <summary>
/// Gets whether the Command affects a given Graph.
/// </summary>
/// <param name="graphUri">Graph URI.</param>
/// <returns></returns>
[Obsolete("Replaced by AffectsGraph(IRefNode)")]
public override bool AffectsGraph(Uri graphUri)
{
var affectedUris = new List<string>();
if (TargetUri != null)
{
affectedUris.Add(TargetUri.AbsoluteUri);
}
else
{
affectedUris.Add(string.Empty);
}
if (InsertPattern.IsGraph) affectedUris.Add(InsertPattern.GraphSpecifier.Value);
if (InsertPattern.HasChildGraphPatterns)
{
affectedUris.AddRange(from p in InsertPattern.ChildGraphPatterns
where p.IsGraph
select p.GraphSpecifier.Value);
}
if (affectedUris.Any(u => u != null)) affectedUris.Add(string.Empty);
return affectedUris.Contains(graphUri.ToSafeString());
}
/// <summary>
/// Gets whether the Command will potentially affect the given Graph.
/// </summary>
/// <param name="graphName">Graph name.</param>
/// <returns></returns>
public override bool AffectsGraph(IRefNode graphName)
{
var affectedUris = new List<string> {TargetGraph.ToSafeString()};
if (InsertPattern.IsGraph) affectedUris.Add(InsertPattern.GraphSpecifier.Value);
if (InsertPattern.HasChildGraphPatterns)
{
affectedUris.AddRange(from p in InsertPattern.ChildGraphPatterns
where p.IsGraph
select p.GraphSpecifier.Value);
}
if (affectedUris.Any(u => u != null)) affectedUris.Add(string.Empty);
return affectedUris.Contains(graphName.ToSafeString());
}
/// <summary>
/// Gets the URI of the Graph the insertions are made to.
/// </summary>
[Obsolete("Replaced by TargetGraph")]
public Uri TargetUri
{
get
{
return (WithGraphName as IUriNode)?.Uri;
}
}
/// <summary>
/// Gets the name of the graph insertions are applied to.
/// </summary>
public IRefNode TargetGraph => WithGraphName;
/// <summary>
/// Gets the pattern used for insertions.
/// </summary>
public GraphPattern InsertPattern { get; }
/// <summary>
/// Gets the pattern used for the WHERE clause.
/// </summary>
public GraphPattern WherePattern { get; }
/// <summary>
/// Optimises the Commands WHERE pattern.
/// </summary>
public override void Optimise(IQueryOptimiser optimiser)
{
WherePattern.Optimise(optimiser);
}
/// <summary>
/// Processes the Command using the given Update Processor.
/// </summary>
/// <param name="processor">SPARQL Update Processor.</param>
public override void Process(ISparqlUpdateProcessor processor)
{
processor.ProcessInsertCommand(this);
}
/// <summary>
/// Gets the String representation of the Command.
/// </summary>
/// <returns></returns>
public override string ToString()
{
var output = new StringBuilder();
var formatter = new SparqlFormatter();
if (WithGraphName != null)
{
output.Append("WITH ");
output.AppendLine(formatter.Format(WithGraphName));
}
output.AppendLine("INSERT");
output.AppendLine(InsertPattern.ToString());
if (_usingUris != null)
{
foreach (Uri u in _usingUris)
{
output.AppendLine("USING <" + u.AbsoluteUri.Replace(">", "\\>") + ">");
}
}
if (_usingNamedUris != null)
{
foreach (Uri u in _usingNamedUris)
{
output.AppendLine("USING NAMED <" + u.AbsoluteUri.Replace(">", "\\>") + ">");
}
}
output.AppendLine("WHERE");
output.AppendLine(WherePattern.ToString());
return output.ToString();
}
}
}