Class StatementDecoratorInterceptor
- java.lang.Object
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- org.apache.tomcat.jdbc.pool.JdbcInterceptor
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- org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor
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- org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor
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- All Implemented Interfaces:
java.lang.reflect.InvocationHandler
- Direct Known Subclasses:
StatementCache
public class StatementDecoratorInterceptor extends AbstractCreateStatementInterceptor
Implementation of JdbcInterceptor that proxies resultSets and statements.- Author:
- Guillermo Fernandes
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected static classStatementDecoratorInterceptor.ResultSetProxyprotected classStatementDecoratorInterceptor.StatementProxy<T extends java.sql.Statement>Class to measure query execute time.
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Field Summary
Fields Modifier and Type Field Description protected static java.lang.StringEXECUTE_QUERYprotected static java.lang.StringGET_GENERATED_KEYSprotected static java.lang.StringGET_RESULTSETprotected static java.lang.String[]RESULTSET_TYPESprotected static java.lang.reflect.Constructor<?>resultSetConstructorthe constructor to create the resultSet proxies-
Fields inherited from class org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor
constructors, 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_TYPES
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Fields inherited from class org.apache.tomcat.jdbc.pool.JdbcInterceptor
CLOSE_VAL, EQUALS_VAL, GETCONNECTION_VAL, HASHCODE_VAL, ISCLOSED_VAL, ISVALID_VAL, ISWRAPPERFOR_VAL, properties, TOSTRING_VAL, UNWRAP_VAL
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Constructor Summary
Constructors Constructor Description StatementDecoratorInterceptor()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidcloseInvoked()Method invoked when the operationConnection.close()is invoked.protected java.lang.ObjectcreateDecorator(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args, java.lang.Object statement, java.lang.reflect.Constructor<?> constructor, java.lang.String sql)Creates a proxy for a Statement.java.lang.ObjectcreateStatement(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args, java.lang.Object statement, long time)Creates a statement interceptor to monitor query response timesprotected java.lang.reflect.Constructor<?>getResultSetConstructor()protected booleanisExecuteQuery(java.lang.reflect.Method method)protected booleanisExecuteQuery(java.lang.String methodName)protected booleanisResultSet(java.lang.reflect.Method method, boolean process)-
Methods inherited from class org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor
getConstructor, invoke, isExecute, isStatement, process, reset
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Methods inherited from class org.apache.tomcat.jdbc.pool.JdbcInterceptor
compare, compare, disconnected, getNext, getProperties, isUseEquals, poolClosed, poolStarted, setNext, setProperties, setUseEquals
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Field Detail
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EXECUTE_QUERY
protected static final java.lang.String EXECUTE_QUERY
- See Also:
- Constant Field Values
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GET_GENERATED_KEYS
protected static final java.lang.String GET_GENERATED_KEYS
- See Also:
- Constant Field Values
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GET_RESULTSET
protected static final java.lang.String GET_RESULTSET
- See Also:
- Constant Field Values
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RESULTSET_TYPES
protected static final java.lang.String[] RESULTSET_TYPES
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resultSetConstructor
protected static volatile java.lang.reflect.Constructor<?> resultSetConstructor
the constructor to create the resultSet proxies
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Method Detail
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closeInvoked
public void closeInvoked()
Description copied from class:AbstractCreateStatementInterceptorMethod invoked when the operationConnection.close()is invoked.- Specified by:
closeInvokedin classAbstractCreateStatementInterceptor
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getResultSetConstructor
protected java.lang.reflect.Constructor<?> getResultSetConstructor() throws java.lang.NoSuchMethodException- Throws:
java.lang.NoSuchMethodException
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createStatement
public java.lang.Object createStatement(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args, java.lang.Object statement, long time)Creates a statement interceptor to monitor query response times- Specified by:
createStatementin classAbstractCreateStatementInterceptor- Parameters:
proxy- the actual proxy objectmethod- the method that was called. It will be one of the methods defined inAbstractCreateStatementInterceptor.STATEMENT_TYPESargs- the arguments to the methodstatement- the statement that the underlying connection createdtime- Elapsed time- Returns:
- a
Statementobject
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createDecorator
protected java.lang.Object createDecorator(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args, java.lang.Object statement, java.lang.reflect.Constructor<?> constructor, java.lang.String sql) throws java.lang.InstantiationException, java.lang.IllegalAccessException, java.lang.reflect.InvocationTargetExceptionCreates a proxy for a Statement.- 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 proxyargs- The arguments passed as part of the method call to the proxystatement- The statement object that is to be proxiedconstructor- The constructor for the desired proxysql- The sql of of the statement- Returns:
- A new proxy for the Statement
- Throws:
java.lang.InstantiationException- Couldn't instantiate objectjava.lang.IllegalAccessException- Inaccessible constructorjava.lang.reflect.InvocationTargetException- Exception thrown from constructor
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isExecuteQuery
protected boolean isExecuteQuery(java.lang.String methodName)
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isExecuteQuery
protected boolean isExecuteQuery(java.lang.reflect.Method method)
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isResultSet
protected boolean isResultSet(java.lang.reflect.Method method, boolean process)
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