Class CacheLinqExtensions
Extensions methods for ICache<TK, TV>.
Inherited Members
Namespace: Apache.Ignite.Linq
Assembly: Apache.Ignite.Linq.dll
Syntax
public static class CacheLinqExtensionsMethods
AsCacheQueryable<TKey, TValue>(ICache<TKey, TValue>)
Gets an IQueryable<T> instance over this cache.
Resulting query will be translated to cache SQL query and executed over the cache instance via Query(SqlFieldsQuery). Result of this method (and subsequent query) can be cast to ICacheQueryable for introspection, or converted with ToCacheQueryable<T>(IQueryable<T>) extension method.Declaration
public static IQueryable<ICacheEntry<TKey, TValue>> AsCacheQueryable<TKey, TValue>(this ICache<TKey, TValue> cache)Parameters
| Type | Name | Description |
|---|---|---|
| ICache<TKey, TValue> | cache | The cache. |
Returns
| Type | Description |
|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | IQueryable<T> instance over this cache. |
Type Parameters
| Name | Description |
|---|---|
| TKey | The type of the key. |
| TValue | The type of the value. |
AsCacheQueryable<TKey, TValue>(ICache<TKey, TValue>, QueryOptions)
Gets an IQueryable<T> instance over this cache.
Resulting query will be translated to cache SQL query and executed over the cache instance via Query(SqlFieldsQuery). depending on requested result. Result of this method (and subsequent query) can be cast to ICacheQueryable for introspection.Declaration
[SuppressMessage("Microsoft.Design", "CA1062:Validate arguments of public methods", Justification = "False positive")]
public static IQueryable<ICacheEntry<TKey, TValue>> AsCacheQueryable<TKey, TValue>(this ICache<TKey, TValue> cache, QueryOptions queryOptions)Parameters
| Type | Name | Description |
|---|---|---|
| ICache<TKey, TValue> | cache | The cache. |
| QueryOptions | queryOptions | The query options. |
Returns
| Type | Description |
|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | IQueryable<T> instance over this cache. |
Type Parameters
| Name | Description |
|---|---|
| TKey | The type of the key. |
| TValue | The type of the value. |
AsCacheQueryable<TKey, TValue>(ICache<TKey, TValue>, bool)
Gets an IQueryable<T> instance over this cache.
Resulting query will be translated to cache SQL query and executed over the cache instance via Query(SqlFieldsQuery). depending on requested result. Result of this method (and subsequent query) can be cast to ICacheQueryable for introspection.Declaration
public static IQueryable<ICacheEntry<TKey, TValue>> AsCacheQueryable<TKey, TValue>(this ICache<TKey, TValue> cache, bool local)Parameters
| Type | Name | Description |
|---|---|---|
| ICache<TKey, TValue> | cache | The cache. |
| bool | local | Local flag. When set query will be executed only on local node, so only local entries will be returned as query result. |
Returns
| Type | Description |
|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | IQueryable<T> instance over this cache. |
Type Parameters
| Name | Description |
|---|---|
| TKey | The type of the key. |
| TValue | The type of the value. |
AsCacheQueryable<TKey, TValue>(ICache<TKey, TValue>, bool, string)
Gets an IQueryable<T> instance over this cache.
Resulting query will be translated to cache SQL query and executed over the cache instance via Query(SqlFieldsQuery). depending on requested result. Result of this method (and subsequent query) can be cast to ICacheQueryable for introspection.Declaration
public static IQueryable<ICacheEntry<TKey, TValue>> AsCacheQueryable<TKey, TValue>(this ICache<TKey, TValue> cache, bool local, string tableName)Parameters
| Type | Name | Description |
|---|---|---|
| ICache<TKey, TValue> | cache | The cache. |
| bool | local | Local flag. When set query will be executed only on local node, so only local entries will be returned as query result. |
| string | tableName | Name of the table. Table name is equal to short class name of a cache value. When a cache has only one type of values, or only one QueryEntity defined, table name will be inferred and can be omitted. |
Returns
| Type | Description |
|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | IQueryable<T> instance over this cache. |
Type Parameters
| Name | Description |
|---|---|
| TKey | The type of the key. |
| TValue | The type of the value. |
RemoveAll<TKey, TValue>(IQueryable<ICacheEntry<TKey, TValue>>)
Removes all rows that are matched by the specified query.
This method results in "DELETE FROM" distributed SQL query, performing bulk delete (as opposed to fetching all rows locally).Declaration
[SuppressMessage("Microsoft.Design", "CA1062:Validate arguments of public methods", Justification = "Validation is present.")]
public static int RemoveAll<TKey, TValue>(this IQueryable<ICacheEntry<TKey, TValue>> query)Parameters
| Type | Name | Description |
|---|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | query | The query. |
Returns
| Type | Description |
|---|---|
| int | Affected row count. |
Type Parameters
| Name | Description |
|---|---|
| TKey | Key type. |
| TValue | Value type. |
RemoveAll<TKey, TValue>(IQueryable<ICacheEntry<TKey, TValue>>, Expression<Func<ICacheEntry<TKey, TValue>, bool>>)
Deletes all rows that are matched by the specified query.
This method results in "DELETE FROM" distributed SQL query, performing bulk delete (as opposed to fetching all rows locally).Declaration
[SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters", Justification = "Only specified type of predicate is valid.")]
[SuppressMessage("Microsoft.Design", "CA1062:Validate arguments of public methods", Justification = "Validation is present.")]
public static int RemoveAll<TKey, TValue>(this IQueryable<ICacheEntry<TKey, TValue>> query, Expression<Func<ICacheEntry<TKey, TValue>, bool>> predicate)Parameters
| Type | Name | Description |
|---|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | query | The query. |
| Expression<Func<ICacheEntry<TKey, TValue>, bool>> | predicate | The predicate. |
Returns
| Type | Description |
|---|---|
| int | Affected row count. |
Type Parameters
| Name | Description |
|---|---|
| TKey | Key type. |
| TValue | Value type. |
ToCacheQueryable<T>(IQueryable<T>)
Casts this query to ICacheQueryable.
Declaration
public static ICacheQueryable ToCacheQueryable<T>(this IQueryable<T> query)Parameters
| Type | Name | Description |
|---|---|---|
| IQueryable<T> | query |
Returns
| Type | Description |
|---|---|
| ICacheQueryable |
Type Parameters
| Name | Description |
|---|---|
| T |
UpdateAll<TKey, TValue>(IQueryable<ICacheEntry<TKey, TValue>>, Expression<Func<IUpdateDescriptor<TKey, TValue>, IUpdateDescriptor<TKey, TValue>>>)
Updates all rows that are matched by the specified query.
This method results in "UPDATE" distributed SQL query, performing bulk update (as opposed to fetching all rows locally).Declaration
[SuppressMessage("Microsoft.Design", "CA1062:Validate arguments of public methods", Justification = "False positive")]
public static int UpdateAll<TKey, TValue>(this IQueryable<ICacheEntry<TKey, TValue>> query, Expression<Func<IUpdateDescriptor<TKey, TValue>, IUpdateDescriptor<TKey, TValue>>> updateDescription)Parameters
| Type | Name | Description |
|---|---|---|
| IQueryable<ICacheEntry<TKey, TValue>> | query | The query. |
| Expression<Func<IUpdateDescriptor<TKey, TValue>, IUpdateDescriptor<TKey, TValue>>> | updateDescription | The update description. |
Returns
| Type | Description |
|---|---|
| int | Affected row count. |
Type Parameters
| Name | Description |
|---|---|
| TKey | Key type. |
| TValue | Value type. |