Modifier and Type	Class and Description
protected class	StatementCache.CachedStatement
private static class	StatementCache.CacheKey

Modifier and Type	Field and Description
protected static final String[]	ALL_TYPES
private boolean	cacheCallable
private boolean	cachePrepared
private AtomicInteger	cacheSize
private static ConcurrentHashMap<ConnectionPool, AtomicInteger>	cacheSizeMap
protected static final String[]	CALLABLE_TYPE
private static final Log	log
private int	maxCacheSize
protected static final String[]	NO_TYPE
private ObjectName	oname
private PooledConnection	pcon
protected static final String[]	PREPARED_TYPE
protected static final String	STATEMENT_CACHE_ATTR
private String[]	types

Access	Constructor and Description
public	StatementCache()

Method Summary

Modifier and Type	Method and Description
public boolean	cacheStatement(StatementCache.CachedStatement proxy)
public void	closeStatement(StatementCache.CachedStatement st)
protected StatementCache.CacheKey	createCacheKey(Method method, Object[] args)
protected StatementCache.CacheKey	createCacheKey(String methodName, Object[] args)
protected Object	createDecorator(Object The proxy object on which the method that triggered the creation of the statement was called. proxy, Method The method that was called on the proxy method, Object[] The arguments passed as part of the method call to the proxy args, Object The statement object that is to be proxied statement, Constructor<?> The constructor for the desired proxy constructor, String The sql of of the statement sql) Overrides org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.createDecorator. Creates a proxy for a Statement.
public void	disconnected(ConnectionPool - the connection pool that this connection belongs to parent, PooledConnection - the pooled connection that holds this connection con, boolean - if this connection is finalizing. True means that the pooled connection will not reconnect the underlying connection finalizing) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.disconnected. Called when `java.sql.Connection#close()` is called on the underlying connection.
protected ConcurrentHashMap<StatementCache.CacheKey, StatementCache.CachedStatement>	getCache()
public AtomicInteger	getCacheSize() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getCacheSize.
public int	getCacheSizePerConnection() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getCacheSizePerConnection.
public int	getMaxCacheSize() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getMaxCacheSize.
public String[]	getTypes()
public Object	invoke(Object the proxy instance that the method was invoked on proxy, Method the `Method` instance corresponding to the interface method invoked on the proxy instance. The declaring class of the `Method` object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through. method, Object[] an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or `null` if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as `java.lang.Integer` or `java.lang.Boolean`. args) Overrides org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke. Implements java.lang.reflect.InvocationHandler.invoke. Gets invoked each time an operation on `java.sql.Connection` is invoked.
public boolean	isCacheCallable() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.isCacheCallable.
public StatementCache.CachedStatement	isCached(Method method, Object[] args)
public boolean	isCachePrepared() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.isCachePrepared.
public void	poolClosed(ConnectionPool - the pool that is being closed. pool) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolClosed. This method is invoked by a connection pool when the pool is closed.
public void	poolStarted(ConnectionPool - the pool that is being closed. pool) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolStarted. This method is invoked by a connection pool when the pool is first started up, usually when the first connection is requested.
public boolean	removeStatement(StatementCache.CachedStatement proxy)
public void	reset(ConnectionPool - the connection pool owning the connection parent, PooledConnection - the pooled connection con) Overrides org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.reset. no-op for this interceptor.
public void	setProperties(Map<String, PoolProperties.InterceptorProperty> The properties properties) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.setProperties. 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 properties

Inherited from org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor:: closeInvoked createStatement getResultSetConstructor isExecuteQuery isExecuteQuery isResultSet

Field Detail

ALL_TYPES	back to summary
protected static final String[] ALL_TYPES

cacheCallable	back to summary
private boolean cacheCallable

cachePrepared	back to summary
private boolean cachePrepared

cacheSize	back to summary
private AtomicInteger cacheSize

cacheSizeMap	back to summary
private static ConcurrentHashMap<ConnectionPool, AtomicInteger> cacheSizeMap

CALLABLE_TYPE	back to summary
protected static final String[] CALLABLE_TYPE

log	back to summary
private static final Log log

maxCacheSize	back to summary
private int maxCacheSize

NO_TYPE	back to summary
protected static final String[] NO_TYPE

oname	back to summary
private ObjectName oname

pcon	back to summary
private PooledConnection pcon

PREPARED_TYPE	back to summary
protected static final String[] PREPARED_TYPE

STATEMENT_CACHE_ATTR	back to summary
protected static final String STATEMENT_CACHE_ATTR

types	back to summary
private String[] types

Constructor Detail

StatementCache	back to summary
public StatementCache()

Method Detail

cacheStatement	back to summary
public boolean cacheStatement(StatementCache.CachedStatement proxy)

closeStatement	back to summary
public void closeStatement(StatementCache.CachedStatement st)

createCacheKey	back to summary
protected StatementCache.CacheKey createCacheKey(Method method, Object[] args)

createCacheKey	back to summary
protected StatementCache.CacheKey createCacheKey(String methodName, Object[] args)

createDecorator	back to summary
protected Object createDecorator(Object proxy, Method method, Object[] args, Object statement, Constructor<?> constructor, String sql) throws InstantiationException, IllegalAccessException, InvocationTargetException Overrides org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.createDecorator. Doc from org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.createDecorator. Creates a proxy for a Statement. Parameters proxy:Object The proxy object on which the method that triggered the creation of the statement was called. method:Method The method that was called on the proxy args:Object[] The arguments passed as part of the method call to the proxy statement:Object The statement object that is to be proxied constructor:Constructor<?> The constructor for the desired proxy sql:String The sql of of the statement Returns:Object A new proxy for the Statement Annotations @Override Exceptions InstantiationException: Couldn't instantiate object IllegalAccessException: Inaccessible constructor InvocationTargetException: Exception thrown from constructor

createDecorator

back to summary

protected Object createDecorator(Object proxy, Method method, Object[] args, Object statement, Constructor<?> constructor, String sql) throws InstantiationException, IllegalAccessException, InvocationTargetException

Overrides org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.createDecorator.

Doc from org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.createDecorator.

Creates a proxy for a Statement.

Parameters

proxy:Object: The proxy object on which the method that triggered the creation of the statement was called.
method:Method: The method that was called on the proxy
args:Object[]: The arguments passed as part of the method call to the proxy
statement:Object: The statement object that is to be proxied
constructor:Constructor<?>: The constructor for the desired proxy
sql:String: The sql of of the statement

Returns:Object

A new proxy for the Statement

Annotations

@Override

Exceptions

InstantiationException:: Couldn't instantiate object
IllegalAccessException:: Inaccessible constructor
InvocationTargetException:: Exception thrown from constructor

disconnected back to summary

disconnected	back to summary
public void disconnected(ConnectionPool parent, PooledConnection con, boolean finalizing) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.disconnected. Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.disconnected. Called when `java.sql.Connection#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. Parameters parent:ConnectionPool - the connection pool that this connection belongs to con:PooledConnection - the pooled connection that holds this connection finalizing:boolean - if this connection is finalizing. True means that the pooled connection will not reconnect the underlying connection Annotations @Override

public void disconnected(ConnectionPool parent, PooledConnection con, boolean finalizing)

Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.disconnected.

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.disconnected.

Called when java.sql.Connection#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.

Parameters

parent:ConnectionPool: - the connection pool that this connection belongs to
con:PooledConnection: - the pooled connection that holds this connection
finalizing:boolean: - if this connection is finalizing. True means that the pooled connection will not reconnect the underlying connection

Annotations

@Override

getCache	back to summary
protected ConcurrentHashMap<StatementCache.CacheKey, StatementCache.CachedStatement> getCache()

getCacheSize	back to summary
public AtomicInteger getCacheSize() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getCacheSize. Annotations @Override

getCacheSize

back to summary

public AtomicInteger getCacheSize()

Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getCacheSize.

Annotations

@Override

getCacheSizePerConnection	back to summary
public int getCacheSizePerConnection() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getCacheSizePerConnection. Annotations @Override

getCacheSizePerConnection

back to summary

public int getCacheSizePerConnection()

Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getCacheSizePerConnection.

Annotations

@Override

getMaxCacheSize	back to summary
public int getMaxCacheSize() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getMaxCacheSize. Annotations @Override

getMaxCacheSize

back to summary

public int getMaxCacheSize()

Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.getMaxCacheSize.

Annotations

@Override

getTypes	back to summary
public String[] getTypes()

invoke back to summary

invoke	back to summary
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable Overrides org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke. Implements java.lang.reflect.InvocationHandler.invoke. Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke. Gets invoked each time an operation on `java.sql.Connection` is invoked. Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with. Parameters proxy:Object Doc from java.lang.reflect.InvocationHandler.invoke. the proxy instance that the method was invoked on method:Method Doc from java.lang.reflect.InvocationHandler.invoke. the `Method` instance corresponding to the interface method invoked on the proxy instance. The declaring class of the `Method` object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through. args:Object[] Doc from java.lang.reflect.InvocationHandler.invoke. an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or `null` if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as `java.lang.Integer` or `java.lang.Boolean`. Returns:Object Doc from java.lang.reflect.InvocationHandler.invoke. the value to return from the method invocation on the proxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is `null` and the interface method's return type is primitive, then a `NullPointerException` will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a `ClassCastException` will be thrown by the method invocation on the proxy instance. Annotations @Override Exceptions Throwable: Doc from java.lang.reflect.InvocationHandler.invoke. the exception to throw from the method invocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the `throws` clause of the interface method or to the unchecked exception types `java.lang.RuntimeException` or `java.lang.Error`. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the `throws` clause of the interface method, then an `UndeclaredThrowableException` containing the exception that was thrown by this method will be thrown by the method invocation on the proxy instance.

public Object invoke(Object proxy, Method method, Object[] args) throws Throwable

Overrides org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke.

Implements java.lang.reflect.InvocationHandler.invoke.

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke.

Gets invoked each time an operation on java.sql.Connection is invoked. Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with.

Parameters

proxy:Object

Doc from java.lang.reflect.InvocationHandler.invoke.

the proxy instance that the method was invoked on

method:Method

Doc from java.lang.reflect.InvocationHandler.invoke.

the Method instance corresponding to the interface method invoked on the proxy instance. The declaring class of the Method object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through.

args:Object[]

Doc from java.lang.reflect.InvocationHandler.invoke.

an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean.

Returns:Object

Doc from java.lang.reflect.InvocationHandler.invoke.

the value to return from the method invocation on the proxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is null and the interface method's return type is primitive, then a NullPointerException will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a ClassCastException will be thrown by the method invocation on the proxy instance.

Annotations

@Override

Exceptions

Throwable:

Doc from java.lang.reflect.InvocationHandler.invoke.

the exception to throw from the method invocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the throws clause of the interface method or to the unchecked exception types java.lang.RuntimeException or java.lang.Error. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the throws clause of the interface method, then an UndeclaredThrowableException containing the exception that was thrown by this method will be thrown by the method invocation on the proxy instance.

isCacheCallable	back to summary
public boolean isCacheCallable() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.isCacheCallable. Annotations @Override

isCacheCallable

back to summary

public boolean isCacheCallable()

Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.isCacheCallable.

Annotations

@Override

isCached	back to summary
public StatementCache.CachedStatement isCached(Method method, Object[] args)

isCachePrepared	back to summary
public boolean isCachePrepared() Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.isCachePrepared. Annotations @Override

isCachePrepared

back to summary

public boolean isCachePrepared()

Implements org.apache.tomcat.jdbc.pool.interceptor.StatementCacheMBean.isCachePrepared.

Annotations

@Override

poolClosed	back to summary
public void poolClosed(ConnectionPool pool) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolClosed. Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolClosed. This 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. Parameters pool:ConnectionPool - the pool that is being closed. Annotations @Override

poolClosed

back to summary

public void poolClosed(ConnectionPool pool)

Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolClosed.

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolClosed.

This 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.

Parameters

pool:ConnectionPool: - the pool that is being closed.

Annotations

@Override

poolStarted	back to summary
public void poolStarted(ConnectionPool pool) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolStarted. Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolStarted. This 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. Parameters pool:ConnectionPool - the pool that is being closed. Annotations @Override

poolStarted

back to summary

public void poolStarted(ConnectionPool pool)

Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolStarted.

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.poolStarted.

This 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.

Parameters

pool:ConnectionPool: - the pool that is being closed.

Annotations

@Override

removeStatement	back to summary
public boolean removeStatement(StatementCache.CachedStatement proxy)

reset	back to summary
public void reset(ConnectionPool parent, PooledConnection con) Overrides org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.reset. Doc from org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.reset. no-op for this interceptor. no state is stored. Parameters parent:ConnectionPool Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.reset. - the connection pool owning the connection con:PooledConnection Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.reset. - the pooled connection Annotations @Override

reset

back to summary

public void reset(ConnectionPool parent, PooledConnection con)

Overrides org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.reset.

Doc from org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.reset.

no-op for this interceptor. no state is stored.

Parameters

parent:ConnectionPool

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.reset.

- the connection pool owning the connection

con:PooledConnection

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.reset.

- the pooled connection

Annotations

@Override

setProperties	back to summary
public void setProperties(Map<String, PoolProperties.InterceptorProperty> properties) Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.setProperties. Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.setProperties. 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 properties Parameters properties:Map<String, PoolProperties.InterceptorProperty> The properties Annotations @Override

setProperties

back to summary

public void setProperties(Map<String, PoolProperties.InterceptorProperty> properties)

Overrides org.apache.tomcat.jdbc.pool.JdbcInterceptor.setProperties.

Doc from org.apache.tomcat.jdbc.pool.JdbcInterceptor.setProperties.

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 properties

Parameters

properties:Map<String, PoolProperties.InterceptorProperty>: The properties

Annotations

@Override

org.apache.tomcat.jdbc.pool.interceptor back to summary

protected Class StatementCache.CachedStatement

Class Inheritance

extends StatementDecoratorInterceptor.StatementProxy<PreparedStatement>

java.lang.Object
org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.StatementProxy
org.apache.tomcat.jdbc.pool.interceptor.StatementCache.CachedStatement

Field Summary

Modifier and Type	Field and Description
pack-priv StatementCache.CacheKey	key

Inherited from org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.StatementProxy:: closed delegate

Constructor Summary

Access	Constructor and Description
public	CachedStatement(PreparedStatement parent, String sql)

Method Summary

Modifier and Type	Method and Description
public void	closeInvoked() Overrides org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.StatementProxy.closeInvoked.
public void	forceClose()
public StatementCache.CacheKey	getCacheKey()
public void	setCacheKey(StatementCache.CacheKey cacheKey)

Inherited from org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.StatementProxy:: getActualProxy getConnection getConstructor getDelegate getSql invoke setActualProxy setConnection setConstructor toString

Field Detail

key	back to summary
pack-priv StatementCache.CacheKey key

Constructor Detail

CachedStatement	back to summary
public CachedStatement(PreparedStatement parent, String sql)

Method Detail

closeInvoked	back to summary
public void closeInvoked() Overrides org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.StatementProxy.closeInvoked. Annotations @Override

closeInvoked

back to summary

public void closeInvoked()

Overrides org.apache.tomcat.jdbc.pool.interceptor.StatementDecoratorInterceptor.StatementProxy.closeInvoked.

Annotations

@Override

forceClose	back to summary
public void forceClose()

getCacheKey	back to summary
public StatementCache.CacheKey getCacheKey()

setCacheKey	back to summary
public void setCacheKey(StatementCache.CacheKey cacheKey)

org.apache.tomcat.jdbc.pool.interceptor back to summary

private final Class StatementCache.CacheKey

Class Inheritance

extends Object

java.lang.Object
org.apache.tomcat.jdbc.pool.interceptor.StatementCache.CacheKey

Field Summary

Modifier and Type	Field and Description
private final Object[]	args
private final String	stmtType

Constructor Summary

Access	Constructor and Description
private	CacheKey(String type, Object[] methodArgs)

Method Summary

Modifier and Type	Method and Description
public boolean	equals(Object the reference object with which to compare. obj) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for this object.

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll toString wait wait wait

Field Detail

args	back to summary
private final Object[] args

stmtType	back to summary
private final String stmtType

Constructor Detail

CacheKey	back to summary
private CacheKey(String type, Object[] methodArgs)

Method Detail

equals back to summary

public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

obj:Object: the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations

@Override

hashCode back to summary

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int

a hash code value for this object

Annotations

@Override

public Class StatementCache

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

protected Class StatementCache.CachedStatement

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private final Class StatementCache.CacheKey

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail