Class StatementCache
java.lang.Object
org.apache.tomcat.jdbc.pool.JdbcInterceptor
org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor
org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor
org.apache.tomcat.jdbc.pool.interceptor.StatementCache
- All Implemented Interfaces:
- InvocationHandler,- StatementCacheMBean
Interceptor that caches 
PreparedStatement and/or
 CallableStatement instances on a connection.- 
Nested Class SummaryNested ClassesNested classes/interfaces inherited from class org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptorStatementDecoratorInterceptor.ResultSetProxy, StatementDecoratorInterceptor.StatementProxy<T extends Statement>
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Field SummaryFieldsModifier and TypeFieldDescriptionprotected static final String[]protected static final String[]protected static final String[]protected static final String[]protected static final StringFields inherited from class org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptorEXECUTE_QUERY, GET_GENERATED_KEYS, GET_RESULTSET, RESULTSET_TYPES, resultSetConstructorFields inherited from class org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptorconstructors, CREATE_STATEMENT, CREATE_STATEMENT_IDX, EXECUTE, EXECUTE_BATCH, EXECUTE_TYPES, EXECUTE_UPDATE, PREPARE_CALL, PREPARE_CALL_IDX, PREPARE_STATEMENT, PREPARE_STATEMENT_IDX, STATEMENT_TYPE_COUNT, STATEMENT_TYPESFields inherited from class org.apache.tomcat.jdbc.pool.JdbcInterceptorCLOSE_VAL, EQUALS_VAL, GETCONNECTION_VAL, HASHCODE_VAL, ISCLOSED_VAL, ISVALID_VAL, ISWRAPPERFOR_VAL, properties, TOSTRING_VAL, UNWRAP_VAL
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionbooleanvoidprotected org.apache.tomcat.jdbc.pool.interceptor.StatementCache.CacheKeycreateCacheKey(Method method, Object[] args) protected org.apache.tomcat.jdbc.pool.interceptor.StatementCache.CacheKeycreateCacheKey(String methodName, Object[] args) protected ObjectcreateDecorator(Object proxy, Method method, Object[] args, Object statement, Constructor<?> constructor, String sql) Creates a proxy for a Statement.voiddisconnected(ConnectionPool parent, PooledConnection con, boolean finalizing) Called whenConnection.close()is called on the underlying connection.protected ConcurrentHashMap<org.apache.tomcat.jdbc.pool.interceptor.StatementCache.CacheKey,StatementCache.CachedStatement> getCache()intintString[]getTypes()Gets invoked each time an operation onConnectionis invoked.booleanbooleanvoidpoolClosed(ConnectionPool pool) This method is invoked by a connection pool when the pool is closed.voidpoolStarted(ConnectionPool pool) This method is invoked by a connection pool when the pool is first started up, usually when the first connection is requested.booleanvoidreset(ConnectionPool parent, PooledConnection con) no-op for this interceptor. no state is stored.voidsetProperties(Map<String, PoolProperties.InterceptorProperty> properties) Called during the creation of an interceptor The properties can be set during the configuration of an interceptor Override this method to perform type casts between string values and object propertiesMethods inherited from class org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptorcloseInvoked, createStatement, getResultSetConstructor, isExecuteQuery, isExecuteQuery, isResultSetMethods inherited from class org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptorgetConstructor, isExecute, isStatement, processMethods inherited from class org.apache.tomcat.jdbc.pool.JdbcInterceptorcompare, compare, getNext, getProperties, isUseEquals, setNext, setUseEquals
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Field Details- 
ALL_TYPES
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CALLABLE_TYPE
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PREPARED_TYPE
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NO_TYPE
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STATEMENT_CACHE_ATTR
 
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Constructor Details- 
StatementCachepublic StatementCache()
 
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Method Details- 
isCachePreparedpublic boolean isCachePrepared()- Specified by:
- isCachePreparedin interface- StatementCacheMBean
 
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isCacheCallablepublic boolean isCacheCallable()- Specified by:
- isCacheCallablein interface- StatementCacheMBean
 
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getMaxCacheSizepublic int getMaxCacheSize()- Specified by:
- getMaxCacheSizein interface- StatementCacheMBean
 
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getTypes
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getCacheSize- Specified by:
- getCacheSizein interface- StatementCacheMBean
 
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setPropertiesDescription copied from class:JdbcInterceptorCalled during the creation of an interceptor The properties can be set during the configuration of an interceptor Override this method to perform type casts between string values and object properties- Overrides:
- setPropertiesin class- JdbcInterceptor
- Parameters:
- properties- The properties
 
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poolStartedDescription copied from class:JdbcInterceptorThis method is invoked by a connection pool when the pool is first started up, usually when the first connection is requested. Interceptor classes can override this method if they keep static variables or other tracking means around. This method is only invoked on a single instance of the interceptor, and not on every instance created.- Overrides:
- poolStartedin class- JdbcInterceptor
- Parameters:
- pool- - the pool that is being closed.
 
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poolClosedDescription copied from class:JdbcInterceptorThis method is invoked by a connection pool when the pool is closed. Interceptor classes can override this method if they keep static variables or other tracking means around. This method is only invoked on a single instance of the interceptor, and not on every instance created.- Overrides:
- poolClosedin class- JdbcInterceptor
- Parameters:
- pool- - the pool that is being closed.
 
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resetDescription copied from class:AbstractCreateStatementInterceptorno-op for this interceptor. no state is stored.- Overrides:
- resetin class- AbstractCreateStatementInterceptor
- Parameters:
- parent- - the connection pool owning the connection
- con- - the pooled connection
 
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disconnectedDescription copied from class:JdbcInterceptorCalled whenConnection.close()is called on the underlying connection. This is to notify the interceptors, that the physical connection has been released. Implementation of this method should be thought through with care, as no actions should trigger an exception.- Overrides:
- disconnectedin class- JdbcInterceptor
- Parameters:
- parent- - the connection pool that this connection belongs to
- con- - the pooled connection that holds this connection
- finalizing- - if this connection is finalizing. True means that the pooled connection will not reconnect the underlying connection
 
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closeStatement
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createDecoratorprotected Object createDecorator(Object proxy, Method method, Object[] args, Object statement, Constructor<?> constructor, String sql) throws InstantiationException, IllegalAccessException, InvocationTargetException Description copied from class:StatementDecoratorInterceptorCreates a proxy for a Statement.- Overrides:
- createDecoratorin class- StatementDecoratorInterceptor
- Parameters:
- proxy- The proxy object on which the method that triggered the creation of the statement was called.
- method- The method that was called on the proxy
- args- The arguments passed as part of the method call to the proxy
- statement- The statement object that is to be proxied
- constructor- The constructor for the desired proxy
- sql- The sql of of the statement
- Returns:
- A new proxy for the Statement
- Throws:
- InstantiationException- Couldn't instantiate object
- IllegalAccessException- Inaccessible constructor
- InvocationTargetException- Exception thrown from constructor
 
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invokeDescription copied from class:JdbcInterceptorGets invoked each time an operation onConnectionis invoked.- Specified by:
- invokein interface- InvocationHandler
- Overrides:
- invokein class- AbstractCreateStatementInterceptor
- Throws:
- Throwable
 
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isCached
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cacheStatement
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removeStatement
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getCacheprotected ConcurrentHashMap<org.apache.tomcat.jdbc.pool.interceptor.StatementCache.CacheKey,StatementCache.CachedStatement> getCache()
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getCacheSizePerConnectionpublic int getCacheSizePerConnection()- Specified by:
- getCacheSizePerConnectionin interface- StatementCacheMBean
 
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createCacheKey
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createCacheKey
 
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