| /* |
| * 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.Dml |
| { |
| using System; |
| using System.Collections.Generic; |
| using System.Diagnostics.CodeAnalysis; |
| using System.Linq; |
| using System.Linq.Expressions; |
| using System.Reflection; |
| using Remotion.Linq.Clauses; |
| using Remotion.Linq.Clauses.Expressions; |
| using Remotion.Linq.Parsing.ExpressionVisitors; |
| using Remotion.Linq.Parsing.Structure.IntermediateModel; |
| |
| /// <summary> |
| /// Represents a <see cref="MethodCallExpression" /> for |
| /// <see cref="CacheLinqExtensions.UpdateAll{TKey,TValue}" />. |
| /// When user calls UpdateAll, this node is generated. |
| /// </summary> |
| internal sealed class UpdateAllExpressionNode : ResultOperatorExpressionNodeBase |
| { |
| /// <summary> |
| /// The UpdateAll method. |
| /// </summary> |
| public static readonly MethodInfo UpdateAllMethodInfo = typeof(CacheLinqExtensions) |
| .GetMethods() |
| .Single(x => x.Name == "UpdateAll"); |
| |
| //** */ |
| private static readonly MethodInfo[] SupportedMethods = {UpdateAllMethodInfo}; |
| |
| //** */ |
| private readonly LambdaExpression _updateDescription; |
| |
| /// <summary> |
| /// Initializes a new instance of the <see cref="UpdateAllExpressionNode" /> class. |
| /// </summary> |
| /// <param name="parseInfo">The parse information.</param> |
| /// <param name="updateDescription">Expression with update description info</param> |
| public UpdateAllExpressionNode(MethodCallExpressionParseInfo parseInfo, |
| LambdaExpression updateDescription) |
| : base(parseInfo, null, null) |
| { |
| _updateDescription = updateDescription; |
| } |
| |
| /** <inheritdoc /> */ |
| [ExcludeFromCodeCoverage] |
| public override Expression Resolve(ParameterExpression inputParameter, Expression expressionToBeResolved, |
| ClauseGenerationContext clauseGenerationContext) |
| { |
| throw CreateResolveNotSupportedException(); |
| } |
| |
| /** <inheritdoc /> */ |
| protected override ResultOperatorBase CreateResultOperator(ClauseGenerationContext clauseGenerationContext) |
| { |
| if (_updateDescription.Parameters.Count != 1) |
| throw new NotSupportedException("Expression is not supported for UpdateAll: " + |
| _updateDescription); |
| |
| var querySourceRefExpression = (QuerySourceReferenceExpression) Source.Resolve( |
| _updateDescription.Parameters[0], |
| _updateDescription.Parameters[0], |
| clauseGenerationContext); |
| |
| var cacheEntryType = querySourceRefExpression.Type; |
| var querySourceAccessValue = |
| Expression.MakeMemberAccess(querySourceRefExpression, cacheEntryType.GetMember("Value").First()); |
| |
| var methodCall = _updateDescription.Body as MethodCallExpression; |
| |
| if (methodCall == null) |
| throw new NotSupportedException("Expression is not supported for UpdateAll: " + |
| _updateDescription.Body); |
| |
| var updates = new List<MemberUpdateContainer>(); |
| |
| while (methodCall != null) |
| { |
| if (methodCall.Arguments.Count != 2) |
| throw new NotSupportedException("Method is not supported for UpdateAll: " + methodCall); |
| |
| var selectorLambda = (LambdaExpression) methodCall.Arguments[0]; |
| var selector = ReplacingExpressionVisitor.Replace(selectorLambda.Parameters[0], querySourceAccessValue, |
| selectorLambda.Body); |
| |
| var newValue = methodCall.Arguments[1]; |
| switch (newValue.NodeType) |
| { |
| case ExpressionType.Constant: |
| break; |
| case ExpressionType.Lambda: |
| var newValueLambda = (LambdaExpression) newValue; |
| newValue = ReplacingExpressionVisitor.Replace(newValueLambda.Parameters[0], |
| querySourceRefExpression, newValueLambda.Body); |
| break; |
| default: |
| throw new NotSupportedException("Value expression is not supported for UpdateAll: " |
| + newValue); |
| } |
| |
| updates.Add(new MemberUpdateContainer |
| { |
| Selector = selector, |
| Value = newValue |
| }); |
| |
| methodCall = methodCall.Object as MethodCallExpression; |
| } |
| |
| return new UpdateAllResultOperator(updates); |
| } |
| |
| /// <summary> |
| /// Gets the supported methods. |
| /// </summary> |
| public static IEnumerable<MethodInfo> GetSupportedMethods() |
| { |
| return SupportedMethods; |
| } |
| } |
| } |