| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| using System.Collections.Generic; |
| |
| namespace Avro.Util |
| { |
| /// <summary> |
| /// A factory for logical type implementations. |
| /// </summary> |
| public class LogicalTypeFactory |
| { |
| private readonly IDictionary<string, LogicalType> _logicalTypes; |
| |
| /// <summary> |
| /// Returns the <see cref="LogicalTypeFactory" /> singleton. |
| /// </summary> |
| /// <returns>The <see cref="LogicalTypeFactory" /> singleton. </returns> |
| public static LogicalTypeFactory Instance { get; } = new LogicalTypeFactory(); |
| |
| private LogicalTypeFactory() |
| { |
| _logicalTypes = new Dictionary<string, LogicalType>() |
| { |
| { Decimal.LogicalTypeName, new Decimal() }, |
| { Date.LogicalTypeName, new Date() }, |
| { LocalTimestampMillisecond.LogicalTypeName, new LocalTimestampMillisecond() }, |
| { LocalTimestampMicrosecond.LogicalTypeName, new LocalTimestampMicrosecond() }, |
| { TimeMillisecond.LogicalTypeName, new TimeMillisecond() }, |
| { TimeMicrosecond.LogicalTypeName, new TimeMicrosecond() }, |
| { TimestampMillisecond.LogicalTypeName, new TimestampMillisecond() }, |
| { TimestampMicrosecond.LogicalTypeName, new TimestampMicrosecond() }, |
| { Uuid.LogicalTypeName, new Uuid() } |
| }; |
| } |
| |
| /// <summary> |
| /// Registers or replaces a logical type implementation. |
| /// </summary> |
| /// <param name="logicalType">The <see cref="LogicalType"/> implementation that should be registered.</param> |
| public void Register(LogicalType logicalType) |
| { |
| _logicalTypes[logicalType.Name] = logicalType; |
| } |
| |
| /// <summary> |
| /// Retrieves a logical type implementation for a given logical schema. |
| /// </summary> |
| /// <param name="schema">The schema.</param> |
| /// <param name="ignoreInvalidOrUnknown">A flag to indicate if an exception should be thrown for invalid |
| /// or unknown logical types.</param> |
| /// <returns>A <see cref="LogicalType" />.</returns> |
| public LogicalType GetFromLogicalSchema(LogicalSchema schema, bool ignoreInvalidOrUnknown = false) |
| { |
| try |
| { |
| if (!_logicalTypes.TryGetValue(schema.LogicalTypeName, out LogicalType logicalType)) |
| throw new AvroTypeException("Logical type '" + schema.LogicalTypeName + "' is not supported."); |
| |
| logicalType.ValidateSchema(schema); |
| |
| return logicalType; |
| } |
| catch (AvroTypeException) |
| { |
| if (!ignoreInvalidOrUnknown) |
| throw; |
| } |
| |
| return null; |
| } |
| } |
| } |