EntitySqlQueryCacheKey.cs source code in C# .NET

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Code:

                         / Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Common / QueryCache / EntitySqlQueryCacheKey.cs / 1 / EntitySqlQueryCacheKey.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner [....], [....]
//----------------------------------------------------------------------------- 
 
namespace System.Data.Common.QueryCache
{ 
    using System;
    using System.Data.Objects;
    using System.Diagnostics;
 
    /// 
    /// Represents an Entity-SQL-based ObjectQuery Cache key context 
    ///  
    internal sealed class EntitySqlQueryCacheKey : QueryCacheKey
    { 
        /// 
        /// Aggregate hashcode based the hashcode of the properties of this cache key
        /// 
        private readonly int _hashCode; 

        ///  
        /// The name of the default container in effect when the Entity-SQL text was parsed 
        /// (affects whether or not the text can be successfully parsed)
        ///  
        private string _defaultContainer;

        /// 
        /// Entity Sql statement 
        /// 
        private readonly string _eSqlStatement; 
 
        /// 
        /// Parameter collection token 
        /// 
        private readonly string _parametersToken;

        ///  
        /// Number of parameters
        ///  
        private readonly int _parameterCount; 

        ///  
        /// Concatenated representation of the Include span paths
        /// 
        private readonly string _includePathsToken;
 
        /// 
        /// The merge option in effect 
        ///  
        private readonly MergeOption _mergeOption;
 
        /// 
        /// Result type affects assembly plan.
        /// 
        private readonly Type _resultType; 

        ///  
        /// Creates a new instance of ObjectQueryCacheKey given a entityCommand instance 
        /// 
        /// The default container name in effect when parsing the query (may be null) 
        /// The Entity-SQL text of the query
        /// The number of parameters to the query
        /// A string representation of the parameters to the query (may be null)
        /// A string representation of the Include span paths in effect (may be null) 
        /// The merge option in effect. Required for result assembly.
        internal EntitySqlQueryCacheKey(string defaultContainerName, 
                                     string eSqlStatement, 
                                     int parameterCount,
                                     string parametersToken, 
                                     string includePathsToken,
                                     MergeOption mergeOption,
                                     Type resultType)
            : base() 
        {
            Debug.Assert(null != eSqlStatement, "eSqlStatement must not be null"); 
 
            _defaultContainer = defaultContainerName;
            _eSqlStatement = eSqlStatement; 
            _parameterCount = parameterCount;
            _parametersToken = parametersToken;
            _includePathsToken = includePathsToken;
            _mergeOption = mergeOption; 
            _resultType = resultType;
 
            int combinedHash = _eSqlStatement.GetHashCode() ^ 
                               _mergeOption.GetHashCode();
 
            if (_parametersToken != null)
            {
                combinedHash ^= _parametersToken.GetHashCode();
            } 

            if (_includePathsToken != null) 
            { 
                combinedHash ^= _includePathsToken.GetHashCode();
            } 

            if (_defaultContainer != null)
            {
                combinedHash ^= _defaultContainer.GetHashCode(); 
            }
 
            _hashCode = combinedHash; 
        }
 
        /// 
        /// Determines equality of two cache keys based on cache context values
        /// 
        ///  
        /// 
        public override bool Equals(object otherObject) 
        { 
            Debug.Assert(null != otherObject, "otherObject must not be null");
            if (typeof(EntitySqlQueryCacheKey) != otherObject.GetType()) 
            {
                return false;
            }
 
            EntitySqlQueryCacheKey otherObjectQueryCacheKey = (EntitySqlQueryCacheKey)otherObject;
 
            // also use result type... 
            return (_parameterCount == otherObjectQueryCacheKey._parameterCount) &&
                   (_mergeOption == otherObjectQueryCacheKey._mergeOption) && 
                    Equals(otherObjectQueryCacheKey._defaultContainer, _defaultContainer) &&
                    Equals(otherObjectQueryCacheKey._eSqlStatement, _eSqlStatement) &&
                    Equals(otherObjectQueryCacheKey._includePathsToken, _includePathsToken) &&
                    Equals(otherObjectQueryCacheKey._parametersToken, _parametersToken) && 
                    Equals(otherObjectQueryCacheKey._resultType, _resultType);
        } 
 
        /// 
        /// Returns the hashcode for this cache key 
        /// 
        /// 
        public override int GetHashCode()
        { 
            return _hashCode;
        } 
 
        /// 
        /// Returns a string representation of the state of this cache key 
        /// 
        /// 
        /// A string representation that includes query text, parameter information, include path information
        /// and merge option information about this cache key. 
        /// 
        public override string ToString() 
        { 
            return String.Join("|", new string[] { _defaultContainer, _eSqlStatement, _parametersToken, _includePathsToken, Enum.GetName(typeof(MergeOption), _mergeOption) });
        } 

    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner [....], [....]
//----------------------------------------------------------------------------- 
 
namespace System.Data.Common.QueryCache
{ 
    using System;
    using System.Data.Objects;
    using System.Diagnostics;
 
    /// 
    /// Represents an Entity-SQL-based ObjectQuery Cache key context 
    ///  
    internal sealed class EntitySqlQueryCacheKey : QueryCacheKey
    { 
        /// 
        /// Aggregate hashcode based the hashcode of the properties of this cache key
        /// 
        private readonly int _hashCode; 

        ///  
        /// The name of the default container in effect when the Entity-SQL text was parsed 
        /// (affects whether or not the text can be successfully parsed)
        ///  
        private string _defaultContainer;

        /// 
        /// Entity Sql statement 
        /// 
        private readonly string _eSqlStatement; 
 
        /// 
        /// Parameter collection token 
        /// 
        private readonly string _parametersToken;

        ///  
        /// Number of parameters
        ///  
        private readonly int _parameterCount; 

        ///  
        /// Concatenated representation of the Include span paths
        /// 
        private readonly string _includePathsToken;
 
        /// 
        /// The merge option in effect 
        ///  
        private readonly MergeOption _mergeOption;
 
        /// 
        /// Result type affects assembly plan.
        /// 
        private readonly Type _resultType; 

        ///  
        /// Creates a new instance of ObjectQueryCacheKey given a entityCommand instance 
        /// 
        /// The default container name in effect when parsing the query (may be null) 
        /// The Entity-SQL text of the query
        /// The number of parameters to the query
        /// A string representation of the parameters to the query (may be null)
        /// A string representation of the Include span paths in effect (may be null) 
        /// The merge option in effect. Required for result assembly.
        internal EntitySqlQueryCacheKey(string defaultContainerName, 
                                     string eSqlStatement, 
                                     int parameterCount,
                                     string parametersToken, 
                                     string includePathsToken,
                                     MergeOption mergeOption,
                                     Type resultType)
            : base() 
        {
            Debug.Assert(null != eSqlStatement, "eSqlStatement must not be null"); 
 
            _defaultContainer = defaultContainerName;
            _eSqlStatement = eSqlStatement; 
            _parameterCount = parameterCount;
            _parametersToken = parametersToken;
            _includePathsToken = includePathsToken;
            _mergeOption = mergeOption; 
            _resultType = resultType;
 
            int combinedHash = _eSqlStatement.GetHashCode() ^ 
                               _mergeOption.GetHashCode();
 
            if (_parametersToken != null)
            {
                combinedHash ^= _parametersToken.GetHashCode();
            } 

            if (_includePathsToken != null) 
            { 
                combinedHash ^= _includePathsToken.GetHashCode();
            } 

            if (_defaultContainer != null)
            {
                combinedHash ^= _defaultContainer.GetHashCode(); 
            }
 
            _hashCode = combinedHash; 
        }
 
        /// 
        /// Determines equality of two cache keys based on cache context values
        /// 
        ///  
        /// 
        public override bool Equals(object otherObject) 
        { 
            Debug.Assert(null != otherObject, "otherObject must not be null");
            if (typeof(EntitySqlQueryCacheKey) != otherObject.GetType()) 
            {
                return false;
            }
 
            EntitySqlQueryCacheKey otherObjectQueryCacheKey = (EntitySqlQueryCacheKey)otherObject;
 
            // also use result type... 
            return (_parameterCount == otherObjectQueryCacheKey._parameterCount) &&
                   (_mergeOption == otherObjectQueryCacheKey._mergeOption) && 
                    Equals(otherObjectQueryCacheKey._defaultContainer, _defaultContainer) &&
                    Equals(otherObjectQueryCacheKey._eSqlStatement, _eSqlStatement) &&
                    Equals(otherObjectQueryCacheKey._includePathsToken, _includePathsToken) &&
                    Equals(otherObjectQueryCacheKey._parametersToken, _parametersToken) && 
                    Equals(otherObjectQueryCacheKey._resultType, _resultType);
        } 
 
        /// 
        /// Returns the hashcode for this cache key 
        /// 
        /// 
        public override int GetHashCode()
        { 
            return _hashCode;
        } 
 
        /// 
        /// Returns a string representation of the state of this cache key 
        /// 
        /// 
        /// A string representation that includes query text, parameter information, include path information
        /// and merge option information about this cache key. 
        /// 
        public override string ToString() 
        { 
            return String.Join("|", new string[] { _defaultContainer, _eSqlStatement, _parametersToken, _includePathsToken, Enum.GetName(typeof(MergeOption), _mergeOption) });
        } 

    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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