| /** |
| * 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 |
| * |
| * http://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; |
| using System.Collections.Generic; |
| using Newtonsoft.Json.Linq; |
| |
| namespace Avro |
| { |
| /// <summary> |
| /// Class for array type schemas |
| /// </summary> |
| public class ArraySchema : UnnamedSchema |
| { |
| /// <summary> |
| /// Schema for the array 'type' attribute |
| /// </summary> |
| public Schema ItemSchema { get; set; } |
| |
| /// <summary> |
| /// Static class to return a new instance of ArraySchema |
| /// </summary> |
| /// <param name="jtok">JSON object for the array schema</param> |
| /// <param name="names">list of named schemas already parsed</param> |
| /// <param name="encspace">enclosing namespace for the array schema</param> |
| /// <returns></returns> |
| internal static ArraySchema NewInstance(JToken jtok, PropertyMap props, SchemaNames names, string encspace) |
| { |
| JToken jitem = jtok["items"]; |
| if (null == jitem) throw new AvroTypeException("Array does not have 'items'"); |
| |
| return new ArraySchema(Schema.ParseJson(jitem, names, encspace), props); |
| } |
| |
| /// <summary> |
| /// Constructor |
| /// </summary> |
| /// <param name="items">schema for the array items type</param> |
| private ArraySchema(Schema items, PropertyMap props) : base(Type.Array, props) |
| { |
| if (null == items) throw new ArgumentNullException("items"); |
| this.ItemSchema = items; |
| } |
| |
| /// <summary> |
| /// Writes the array schema in JSON format |
| /// </summary> |
| /// <param name="writer">JSON writer</param> |
| /// <param name="names">list of named schemas already written</param> |
| /// <param name="encspace">enclosing namespace</param> |
| protected internal override void WriteJsonFields(Newtonsoft.Json.JsonTextWriter writer, SchemaNames names, string encspace) |
| { |
| writer.WritePropertyName("items"); |
| ItemSchema.WriteJson(writer, names, encspace); |
| } |
| |
| /// <summary> |
| /// Checks if this schema can read data written by the given schema. Used for decoding data. |
| /// </summary> |
| /// <param name="writerSchema">writer schema</param> |
| /// <returns>true if this and writer schema are compatible based on the AVRO specification, false otherwise</returns> |
| public override bool CanRead(Schema writerSchema) |
| { |
| if (writerSchema.Tag != Tag) return false; |
| |
| ArraySchema that = writerSchema as ArraySchema; |
| return ItemSchema.CanRead(that.ItemSchema); |
| } |
| |
| /// <summary> |
| /// Function to compare equality of two array schemas |
| /// </summary> |
| /// <param name="obj">other array schema</param> |
| /// <returns>true two schemas are equal, false otherwise</returns> |
| public override bool Equals(object obj) |
| { |
| if (this == obj) return true; |
| |
| if (obj != null && obj is ArraySchema) |
| { |
| ArraySchema that = obj as ArraySchema; |
| if (ItemSchema.Equals(that.ItemSchema)) |
| return areEqual(that.Props, this.Props); |
| } |
| return false; |
| } |
| |
| /// <summary> |
| /// Hashcode function |
| /// </summary> |
| /// <returns></returns> |
| public override int GetHashCode() |
| { |
| return 29 * ItemSchema.GetHashCode() + getHashCode(Props); |
| } |
| } |
| } |