TypeResolveContext.cs

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// 
//  Copyright 2010-2015 Deveel
// 
//    Licensed 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 System.Linq;

namespace Deveel.Data.Types {
    public sealed class TypeResolveContext {
        private Dictionary<string, DataTypeMeta> meta;

        public TypeResolveContext(SqlTypeCode typeCode) 
            : this(typeCode, typeCode.ToString().ToUpperInvariant()) {
        }

        public TypeResolveContext(SqlTypeCode typeCode, string typeName) 
            : this(typeCode, typeName, new DataTypeMeta[0]) {
        }

        public TypeResolveContext(SqlTypeCode typeCode, string typeName, DataTypeMeta[] meta) {
            TypeCode = typeCode;
            TypeName = typeName;

            this.meta = new Dictionary<string, DataTypeMeta>(StringComparer.OrdinalIgnoreCase);

            if (meta != null) {
                foreach (var typeMeta in meta) {
                    this.meta[typeMeta.Name] = typeMeta;
                }
            }
        }

        public SqlTypeCode TypeCode { get; private set; }

        public string TypeName { get; private set; }

        public bool IsPrimitive {
            get { return PrimitiveTypes.IsPrimitive(TypeCode); }
        }

        public bool HasAnyMeta {
            get { return meta.Count > 0; }
        }

        public bool HasMeta(string name) {
            return meta.ContainsKey(name);
        }

        public DataTypeMeta GetMeta(string name) {
            DataTypeMeta typeMeta;
            if (!meta.TryGetValue(name, out typeMeta))
                return null;

            return typeMeta;
        }

        public DataTypeMeta[] GetMeta() {
            return meta.Values.ToArray();
        }
    }
}