Add oracle support #52
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| using Oracle.ManagedDataAccess.Client; | ||
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| using PhenX.EntityFrameworkCore.BulkInsert.Options; | ||
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| namespace PhenX.EntityFrameworkCore.BulkInsert.Oracle; | ||
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| /// <summary> | ||
| /// Options specific to Oracle bulk insert. | ||
| /// </summary> | ||
| public class OracleBulkInsertOptions : BulkInsertOptions | ||
| { | ||
| /// <inheritdoc cref="OracleBulkCopyOptions"/> | ||
| public OracleBulkCopyOptions CopyOptions { get; set; } = OracleBulkCopyOptions.Default; | ||
| } |
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| using JetBrains.Annotations; | ||
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| using Microsoft.EntityFrameworkCore; | ||
| using Microsoft.Extensions.Logging; | ||
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| using Oracle.ManagedDataAccess.Client; | ||
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| using PhenX.EntityFrameworkCore.BulkInsert.Metadata; | ||
| using PhenX.EntityFrameworkCore.BulkInsert.Options; | ||
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| namespace PhenX.EntityFrameworkCore.BulkInsert.Oracle; | ||
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| [UsedImplicitly] | ||
| internal class OracleBulkInsertProvider(ILogger<OracleBulkInsertProvider>? logger) : BulkInsertProviderBase<OracleDialectBuilder, OracleBulkInsertOptions>(logger) | ||
| { | ||
| /// <inheritdoc /> | ||
| protected override string BulkInsertId => "ROWID"; | ||
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| /// <inheritdoc /> | ||
| protected override string AddTableCopyBulkInsertId => ""; // No need to add an ID column in Oracle | ||
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| /// <inheritdoc /> | ||
| /// <summary> | ||
| /// The temporary table name is generated with a GUID to ensure uniqueness, but limited to less than 30 characters, | ||
| /// because Oracle prior 12.2 has a limit of 30 characters for identifiers. | ||
| /// </summary> | ||
| protected override string GetTempTableName(string tableName) => $"#temp_bulk_insert_{Guid.NewGuid().ToString("N")[..8]}"; | ||
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| protected override OracleBulkInsertOptions CreateDefaultOptions() => new() | ||
| { | ||
| BatchSize = 50_000, | ||
| }; | ||
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| /// <inheritdoc /> | ||
| protected override IAsyncEnumerable<T> BulkInsertReturnEntities<T>( | ||
| bool sync, | ||
| DbContext context, | ||
| TableMetadata tableInfo, | ||
| IEnumerable<T> entities, | ||
| OracleBulkInsertOptions options, | ||
| OnConflictOptions<T>? onConflict, | ||
| CancellationToken ctk) | ||
| { | ||
| throw new NotSupportedException("Provider does not support returning entities."); | ||
| } | ||
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| /// <inheritdoc /> | ||
| protected override Task BulkInsert<T>( | ||
| bool sync, | ||
| DbContext context, | ||
| TableMetadata tableInfo, | ||
| IEnumerable<T> entities, | ||
| string tableName, | ||
| IReadOnlyList<ColumnMetadata> columns, | ||
| OracleBulkInsertOptions options, | ||
| CancellationToken ctk) | ||
| { | ||
| var connection = (OracleConnection) context.Database.GetDbConnection(); | ||
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| using var bulkCopy = new OracleBulkCopy(connection, options.CopyOptions); | ||
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| bulkCopy.DestinationTableName = tableInfo.QuotedTableName; | ||
| bulkCopy.BatchSize = options.BatchSize; | ||
| bulkCopy.BulkCopyTimeout = options.GetCopyTimeoutInSeconds(); | ||
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| foreach (var column in columns) | ||
| { | ||
| bulkCopy.ColumnMappings.Add(column.PropertyName, column.QuotedColumName); | ||
| } | ||
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| var dataReader = new EnumerableDataReader<T>(entities, columns, options); | ||
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| bulkCopy.WriteToServer(dataReader); | ||
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| return Task.CompletedTask; | ||
| } | ||
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| /// <inheritdoc /> | ||
| protected override async Task DropTempTableAsync(bool sync, DbContext dbContext, string tableName) | ||
| { | ||
| var commandText = $""" | ||
| BEGIN | ||
| EXECUTE IMMEDIATE 'DROP TABLE {tableName}'; | ||
| EXCEPTION | ||
| WHEN OTHERS THEN | ||
| IF SQLCODE != -942 THEN -- ORA-00942: table or view does not exist | ||
| RAISE; | ||
| END IF; | ||
| END; | ||
| """; | ||
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| await ExecuteAsync(sync, dbContext, commandText, CancellationToken.None); | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,19 @@ | ||
| using Microsoft.EntityFrameworkCore; | ||
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| using PhenX.EntityFrameworkCore.BulkInsert.Extensions; | ||
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| namespace PhenX.EntityFrameworkCore.BulkInsert.Oracle; | ||
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| /// <summary> | ||
| /// DbContext options extension for Oracle. | ||
| /// </summary> | ||
| public static class OracleDbContextOptionsExtensions | ||
| { | ||
| /// <summary> | ||
| /// Configures the DbContext to use the Oracle bulk insert provider. | ||
| /// </summary> | ||
| public static DbContextOptionsBuilder UseBulkInsertOracle(this DbContextOptionsBuilder optionsBuilder) | ||
| { | ||
| return optionsBuilder.UseProvider<OracleBulkInsertProvider>(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,115 @@ | ||
| using System.Text; | ||
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| using Microsoft.EntityFrameworkCore; | ||
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| using PhenX.EntityFrameworkCore.BulkInsert.Dialect; | ||
| using PhenX.EntityFrameworkCore.BulkInsert.Metadata; | ||
| using PhenX.EntityFrameworkCore.BulkInsert.Options; | ||
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| namespace PhenX.EntityFrameworkCore.BulkInsert.Oracle; | ||
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| internal class OracleDialectBuilder : SqlDialectBuilder | ||
| { | ||
| protected override string OpenDelimiter => "\""; | ||
| protected override string CloseDelimiter => "\""; | ||
| protected override string ConcatOperator => "||"; | ||
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| protected override bool SupportsMoveRows => false; | ||
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| public override string CreateTableCopySql(string tempTableName, TableMetadata tableInfo, IReadOnlyList<ColumnMetadata> columns) | ||
| { | ||
| return CreateTableCopySqlBase(tempTableName, columns); | ||
| } | ||
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| public override string BuildMoveDataSql<T>( | ||
| DbContext context, | ||
| TableMetadata target, | ||
| string source, | ||
| IReadOnlyList<ColumnMetadata> insertedColumns, | ||
| IReadOnlyList<ColumnMetadata> returnedColumns, | ||
| BulkInsertOptions options, | ||
| OnConflictOptions? onConflict = null) | ||
| { | ||
| var q = new StringBuilder(); | ||
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| // Merge handling | ||
| if (onConflict is OnConflictOptions<T> onConflictTyped) | ||
| { | ||
| IEnumerable<string> matchColumns; | ||
| if (onConflictTyped.Match != null) | ||
| { | ||
| matchColumns = GetColumns(target, onConflictTyped.Match); | ||
| } | ||
| else if (target.PrimaryKey.Count > 0) | ||
| { | ||
| matchColumns = target.PrimaryKey.Select(x => x.QuotedColumName); | ||
| } | ||
| else | ||
| { | ||
| throw new InvalidOperationException("Table has no primary key that can be used for conflict detection."); | ||
| } | ||
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| q.AppendLine($"MERGE INTO {target.QuotedTableName} AS {PseudoTableInserted}"); | ||
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| q.Append("USING (SELECT "); | ||
| q.AppendColumns(insertedColumns); | ||
| q.Append($" FROM {source}) AS {PseudoTableExcluded} ("); | ||
| q.AppendColumns(insertedColumns); | ||
| q.AppendLine(")"); | ||
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| q.Append("ON "); | ||
| q.AppendJoin(" AND ", matchColumns, (b, col) => b.Append($"{PseudoTableInserted}.{col} = {PseudoTableExcluded}.{col}")); | ||
| q.AppendLine(); | ||
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| if (onConflictTyped.Update != null) | ||
| { | ||
| var columns = target.GetColumns(false); | ||
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| q.AppendLine("WHEN MATCHED THEN UPDATE SET "); | ||
| q.AppendJoin(", ", GetUpdates(context, target, columns, onConflictTyped.Update)); | ||
| q.AppendLine(); | ||
| } | ||
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| q.Append("WHEN NOT MATCHED THEN INSERT ("); | ||
| q.AppendColumns(insertedColumns); | ||
| q.AppendLine(")"); | ||
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| q.Append("VALUES ("); | ||
| q.AppendJoin(", ", insertedColumns, (b, col) => b.Append($"{PseudoTableExcluded}.{col.QuotedColumName}")); | ||
| q.AppendLine(")"); | ||
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| if (returnedColumns.Count != 0) | ||
| { | ||
| q.Append("OUTPUT "); | ||
| q.AppendJoin(", ", returnedColumns, (b, col) => b.Append($"{PseudoTableInserted}.{col.QuotedColumName} AS {col.QuotedColumName}")); | ||
| q.AppendLine(); | ||
| } | ||
| } | ||
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| // No conflict handling | ||
|
Collaborator
There was a problem hiding this comment. Perhaps two methods so that the comments are not necessary? |
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| else | ||
| { | ||
| q.Append($"INSERT INTO {target.QuotedTableName} ("); | ||
| q.AppendColumns(insertedColumns); | ||
| q.AppendLine(")"); | ||
| q.Append("SELECT "); | ||
| q.AppendColumns(insertedColumns); | ||
| q.AppendLine(); | ||
| q.Append($"FROM {source}"); | ||
| q.AppendLine(); | ||
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| if (returnedColumns.Count != 0) | ||
| { | ||
| q.Append("RETURNING "); | ||
| q.AppendJoin(", ", returnedColumns, (b, col) => b.Append(col.QuotedColumName)); | ||
| q.Append(" INTO "); | ||
| q.AppendJoin(", ", returnedColumns, (b, col) => b.Append($":{col.ColumnName}")); | ||
| q.AppendLine(); | ||
| } | ||
| } | ||
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| q.AppendLine(";"); | ||
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| return q.ToString(); | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,12 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="..\PhenX.EntityFrameworkCore.BulkInsert\PhenX.EntityFrameworkCore.BulkInsert.csproj" /> | ||
| </ItemGroup> | ||
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| <ItemGroup> | ||
| <PackageReference Include="Oracle.EntityFrameworkCore" Condition="'$(TargetFramework)' == 'net8.0'" Version="8.23.80" /> | ||
| <PackageReference Include="Oracle.EntityFrameworkCore" Condition="'$(TargetFramework)' == 'net9.0'" Version="9.23.80" /> | ||
| </ItemGroup> | ||
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| </Project> |
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Why do you not take the whole guid?
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oracle under a certain version (12 I think) does not allow indentifiers longer than 30, yay
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I would probably comment that, because I would have forgotten that next week.
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oh I will remember 😅 but yeah I'll add a comment
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I ahve said this very often to myself :D