| /* |
| * 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. |
| */ |
| |
| namespace Apache.Ignite.Linq.Impl |
| { |
| using System.Threading; |
| using Apache.Ignite.Linq.Impl.Dml; |
| using Remotion.Linq.Parsing.ExpressionVisitors.Transformation; |
| using Remotion.Linq.Parsing.ExpressionVisitors.TreeEvaluation; |
| using Remotion.Linq.Parsing.Structure; |
| using Remotion.Linq.Parsing.Structure.ExpressionTreeProcessors; |
| using Remotion.Linq.Parsing.Structure.NodeTypeProviders; |
| |
| /// <summary> |
| /// Cache query parser. |
| /// </summary> |
| internal static class CacheQueryParser |
| { |
| /** */ |
| private static readonly ThreadLocal<QueryParser> ThreadLocalInstance = |
| new ThreadLocal<QueryParser>(CreateParser); |
| |
| /// <summary> |
| /// Gets the default instance for current thread. |
| /// </summary> |
| public static QueryParser Instance |
| { |
| get { return ThreadLocalInstance.Value; } |
| } |
| |
| /// <summary> |
| /// Creates the parser. |
| /// </summary> |
| private static QueryParser CreateParser() |
| { |
| var transformerRegistry = ExpressionTransformerRegistry.CreateDefault(); |
| |
| var proc = CreateCompoundProcessor(transformerRegistry); |
| |
| var parser = new ExpressionTreeParser(CreateNodeTypeProvider(), proc); |
| |
| return new QueryParser(parser); |
| } |
| |
| /// <summary> |
| /// Creates the node type provider. |
| /// </summary> |
| private static INodeTypeProvider CreateNodeTypeProvider() |
| { |
| var methodInfoRegistry = MethodInfoBasedNodeTypeRegistry.CreateFromRelinqAssembly(); |
| |
| methodInfoRegistry.Register(RemoveAllExpressionNode.GetSupportedMethods(), |
| typeof(RemoveAllExpressionNode)); |
| |
| methodInfoRegistry.Register(UpdateAllExpressionNode.GetSupportedMethods(), |
| typeof(UpdateAllExpressionNode)); |
| |
| return new CompoundNodeTypeProvider(new INodeTypeProvider[] |
| { |
| methodInfoRegistry, |
| MethodNameBasedNodeTypeRegistry.CreateFromRelinqAssembly() |
| }); |
| } |
| |
| /// <summary> |
| /// Creates CompoundExpressionTreeProcessor. |
| /// </summary> |
| private static CompoundExpressionTreeProcessor CreateCompoundProcessor( |
| IExpressionTranformationProvider tranformationProvider) |
| { |
| return new CompoundExpressionTreeProcessor( |
| new IExpressionTreeProcessor[] |
| { |
| new PartialEvaluatingExpressionTreeProcessor(new NullEvaluatableExpressionFilter()), |
| new TransformingExpressionTreeProcessor(tranformationProvider) |
| }); |
| } |
| |
| /// <summary> |
| /// Empty implementation of IEvaluatableExpressionFilter. |
| /// </summary> |
| private sealed class NullEvaluatableExpressionFilter : EvaluatableExpressionFilterBase |
| { |
| // No-op. |
| } |
| } |
| } |