DelegatingStatement (Apache Tomcat 8.0.15 API Documentation)

java.lang.Object
- org.apache.tomcat.dbcp.dbcp2.AbandonedTrace
- - org.apache.tomcat.dbcp.dbcp2.DelegatingStatement

All Implemented Interfaces:

AutoCloseable, Statement, Wrapper, TrackedUse

Direct Known Subclasses:

DelegatingPreparedStatement
```
public class DelegatingStatement
extends AbandonedTrace
implements Statement
```
A base delegating implementation of Statement.
All of the methods from the Statement interface simply check to see that the Statement is active, and call the corresponding method on the "delegate" provided in my constructor.
Extends AbandonedTrace to implement Statement tracking and logging of code which created the Statement. Tracking the Statement ensures that the Connection which created it can close any open Statement's on Connection close.

Since:

2.0

Author:

Rodney Waldhoff, Glenn L. Nielsen, James House, Dirk Verbeeck

Field Summary
- Fields inherited from interface java.sql.Statement
  CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO

Constructor Summary

Constructors
Constructor and Description
`DelegatingStatement(DelegatingConnection<?> c, Statement s)` Create a wrapper for the Statement which traces this Statement to the Connection which created it and the code which created it.

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`activate()`
`void`	`addBatch(String sql)`
`void`	`cancel()`
`protected void`	`checkOpen()`
`void`	`clearBatch()`
`void`	`clearWarnings()`
`void`	`close()` Close this DelegatingStatement, and close any ResultSets that were not explicitly closed.
`void`	`closeOnCompletion()`
`boolean`	`execute(String sql)`
`boolean`	`execute(String sql, int autoGeneratedKeys)`
`boolean`	`execute(String sql, int[] columnIndexes)`
`boolean`	`execute(String sql, String[] columnNames)`
`int[]`	`executeBatch()`
`ResultSet`	`executeQuery(String sql)`
`int`	`executeUpdate(String sql)`
`int`	`executeUpdate(String sql, int autoGeneratedKeys)`
`int`	`executeUpdate(String sql, int[] columnIndexes)`
`int`	`executeUpdate(String sql, String[] columnNames)`
`protected void`	`finalize()`
`Connection`	`getConnection()`
`protected DelegatingConnection<?>`	`getConnectionInternal()`
`Statement`	`getDelegate()` Returns my underlying `Statement`.
`int`	`getFetchDirection()`
`int`	`getFetchSize()`
`ResultSet`	`getGeneratedKeys()`
`Statement`	`getInnermostDelegate()` If my underlying `Statement` is not a `DelegatingStatement`, returns it, otherwise recursively invokes this method on my delegate.
`int`	`getMaxFieldSize()`
`int`	`getMaxRows()`
`boolean`	`getMoreResults()`
`boolean`	`getMoreResults(int current)`
`int`	`getQueryTimeout()`
`ResultSet`	`getResultSet()`
`int`	`getResultSetConcurrency()`
`int`	`getResultSetHoldability()`
`int`	`getResultSetType()`
`int`	`getUpdateCount()`
`SQLWarning`	`getWarnings()`
`protected void`	`handleException(SQLException e)`
`boolean`	`isClosed()`
`protected boolean`	`isClosedInternal()`
`boolean`	`isCloseOnCompletion()`
`boolean`	`isPoolable()`
`boolean`	`isWrapperFor(Class<?> iface)`
`protected void`	`passivate()`
`protected void`	`setClosedInternal(boolean closed)`
`void`	`setCursorName(String name)`
`void`	`setDelegate(Statement s)` Sets my delegate.
`void`	`setEscapeProcessing(boolean enable)`
`void`	`setFetchDirection(int direction)`
`void`	`setFetchSize(int rows)`
`void`	`setMaxFieldSize(int max)`
`void`	`setMaxRows(int max)`
`void`	`setPoolable(boolean poolable)`
`void`	`setQueryTimeout(int seconds)`
`String`	`toString()` Returns a String representation of this object.
`<T> T`	`unwrap(Class<T> iface)`

Methods inherited from class org.apache.tomcat.dbcp.dbcp2.AbandonedTrace
addTrace, clearTrace, getLastUsed, getTrace, removeTrace, setLastUsed, setLastUsed

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - DelegatingStatement
```
public DelegatingStatement(DelegatingConnection<?> c,
                   Statement s)
```
    Create a wrapper for the Statement which traces this Statement to the Connection which created it and the code which created it.
    
    Parameters:
    s - the Statement to delegate all calls to.
    c - the DelegatingConnection that created this statement.
- Method Detail
  - getDelegate
```
public Statement getDelegate()
```
    Returns my underlying Statement.
    
    Returns:
    my underlying Statement.
    See Also:
    getInnermostDelegate()
  - getInnermostDelegate
```
public Statement getInnermostDelegate()
```
    If my underlying Statement is not a DelegatingStatement, returns it, otherwise recursively invokes this method on my delegate.
    Hence this method will return the first delegate that is not a DelegatingStatement or null when no non-DelegatingStatement delegate can be found by transversing this chain.
    This method is useful when you may have nested DelegatingStatements, and you want to make sure to obtain a "genuine" Statement.
    
    See Also:
    getDelegate()
  - setDelegate
```
public void setDelegate(Statement s)
```
    Sets my delegate.
  - isClosedInternal
```
protected boolean isClosedInternal()
```
  - setClosedInternal
```
protected void setClosedInternal(boolean closed)
```
  - checkOpen
```
protected void checkOpen()
                  throws SQLException
```
    Throws:
    
    SQLException
  - close
```
public void close()
           throws SQLException
```
    Close this DelegatingStatement, and close any ResultSets that were not explicitly closed.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Statement
    
    Throws:
    
    SQLException
  - handleException
```
protected void handleException(SQLException e)
                        throws SQLException
```
    Throws:
    
    SQLException
  - activate
```
protected void activate()
                 throws SQLException
```
    Throws:
    
    SQLException
  - passivate
```
protected void passivate()
                  throws SQLException
```
    Throws:
    
    SQLException
  - getConnection
```
public Connection getConnection()
                         throws SQLException
```
    Specified by:
    
    getConnection in interface Statement
    
    Throws:
    
    SQLException
  - getConnectionInternal
```
protected DelegatingConnection<?> getConnectionInternal()
```
  - executeQuery
```
public ResultSet executeQuery(String sql)
                       throws SQLException
```
    Specified by:
    
    executeQuery in interface Statement
    
    Throws:
    
    SQLException
  - getResultSet
```
public ResultSet getResultSet()
                       throws SQLException
```
    Specified by:
    
    getResultSet in interface Statement
    
    Throws:
    
    SQLException
  - executeUpdate
```
public int executeUpdate(String sql)
                  throws SQLException
```
    Specified by:
    
    executeUpdate in interface Statement
    
    Throws:
    
    SQLException
  - getMaxFieldSize
```
public int getMaxFieldSize()
                    throws SQLException
```
    Specified by:
    
    getMaxFieldSize in interface Statement
    
    Throws:
    
    SQLException
  - setMaxFieldSize
```
public void setMaxFieldSize(int max)
                     throws SQLException
```
    Specified by:
    
    setMaxFieldSize in interface Statement
    
    Throws:
    
    SQLException
  - getMaxRows
```
public int getMaxRows()
               throws SQLException
```
    Specified by:
    
    getMaxRows in interface Statement
    
    Throws:
    
    SQLException
  - setMaxRows
```
public void setMaxRows(int max)
                throws SQLException
```
    Specified by:
    
    setMaxRows in interface Statement
    
    Throws:
    
    SQLException
  - setEscapeProcessing
```
public void setEscapeProcessing(boolean enable)
                         throws SQLException
```
    Specified by:
    
    setEscapeProcessing in interface Statement
    
    Throws:
    
    SQLException
  - getQueryTimeout
```
public int getQueryTimeout()
                    throws SQLException
```
    Specified by:
    
    getQueryTimeout in interface Statement
    
    Throws:
    
    SQLException
  - setQueryTimeout
```
public void setQueryTimeout(int seconds)
                     throws SQLException
```
    Specified by:
    
    setQueryTimeout in interface Statement
    
    Throws:
    
    SQLException
  - cancel
```
public void cancel()
            throws SQLException
```
    Specified by:
    
    cancel in interface Statement
    
    Throws:
    
    SQLException
  - getWarnings
```
public SQLWarning getWarnings()
                       throws SQLException
```
    Specified by:
    
    getWarnings in interface Statement
    
    Throws:
    
    SQLException
  - clearWarnings
```
public void clearWarnings()
                   throws SQLException
```
    Specified by:
    
    clearWarnings in interface Statement
    
    Throws:
    
    SQLException
  - setCursorName
```
public void setCursorName(String name)
                   throws SQLException
```
    Specified by:
    
    setCursorName in interface Statement
    
    Throws:
    
    SQLException
  - execute
```
public boolean execute(String sql)
                throws SQLException
```
    Specified by:
    
    execute in interface Statement
    
    Throws:
    
    SQLException
  - getUpdateCount
```
public int getUpdateCount()
                   throws SQLException
```
    Specified by:
    
    getUpdateCount in interface Statement
    
    Throws:
    
    SQLException
  - getMoreResults
```
public boolean getMoreResults()
                       throws SQLException
```
    Specified by:
    
    getMoreResults in interface Statement
    
    Throws:
    
    SQLException
  - setFetchDirection
```
public void setFetchDirection(int direction)
                       throws SQLException
```
    Specified by:
    
    setFetchDirection in interface Statement
    
    Throws:
    
    SQLException
  - getFetchDirection
```
public int getFetchDirection()
                      throws SQLException
```
    Specified by:
    
    getFetchDirection in interface Statement
    
    Throws:
    
    SQLException
  - setFetchSize
```
public void setFetchSize(int rows)
                  throws SQLException
```
    Specified by:
    
    setFetchSize in interface Statement
    
    Throws:
    
    SQLException
  - getFetchSize
```
public int getFetchSize()
                 throws SQLException
```
    Specified by:
    
    getFetchSize in interface Statement
    
    Throws:
    
    SQLException
  - getResultSetConcurrency
```
public int getResultSetConcurrency()
                            throws SQLException
```
    Specified by:
    
    getResultSetConcurrency in interface Statement
    
    Throws:
    
    SQLException
  - getResultSetType
```
public int getResultSetType()
                     throws SQLException
```
    Specified by:
    
    getResultSetType in interface Statement
    
    Throws:
    
    SQLException
  - addBatch
```
public void addBatch(String sql)
              throws SQLException
```
    Specified by:
    
    addBatch in interface Statement
    
    Throws:
    
    SQLException
  - clearBatch
```
public void clearBatch()
                throws SQLException
```
    Specified by:
    
    clearBatch in interface Statement
    
    Throws:
    
    SQLException
  - executeBatch
```
public int[] executeBatch()
                   throws SQLException
```
    Specified by:
    
    executeBatch in interface Statement
    
    Throws:
    
    SQLException
  - toString
```
public String toString()
```
    Returns a String representation of this object.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    String
  - getMoreResults
```
public boolean getMoreResults(int current)
                       throws SQLException
```
    Specified by:
    
    getMoreResults in interface Statement
    
    Throws:
    
    SQLException
  - getGeneratedKeys
```
public ResultSet getGeneratedKeys()
                           throws SQLException
```
    Specified by:
    
    getGeneratedKeys in interface Statement
    
    Throws:
    
    SQLException
  - executeUpdate
```
public int executeUpdate(String sql,
                int autoGeneratedKeys)
                  throws SQLException
```
    Specified by:
    
    executeUpdate in interface Statement
    
    Throws:
    
    SQLException
  - executeUpdate
```
public int executeUpdate(String sql,
                int[] columnIndexes)
                  throws SQLException
```
    Specified by:
    
    executeUpdate in interface Statement
    
    Throws:
    
    SQLException
  - executeUpdate
```
public int executeUpdate(String sql,
                String[] columnNames)
                  throws SQLException
```
    Specified by:
    
    executeUpdate in interface Statement
    
    Throws:
    
    SQLException
  - execute
```
public boolean execute(String sql,
              int autoGeneratedKeys)
                throws SQLException
```
    Specified by:
    
    execute in interface Statement
    
    Throws:
    
    SQLException
  - execute
```
public boolean execute(String sql,
              int[] columnIndexes)
                throws SQLException
```
    Specified by:
    
    execute in interface Statement
    
    Throws:
    
    SQLException
  - execute
```
public boolean execute(String sql,
              String[] columnNames)
                throws SQLException
```
    Specified by:
    
    execute in interface Statement
    
    Throws:
    
    SQLException
  - getResultSetHoldability
```
public int getResultSetHoldability()
                            throws SQLException
```
    Specified by:
    
    getResultSetHoldability in interface Statement
    
    Throws:
    
    SQLException
  - isClosed
```
public boolean isClosed()
                 throws SQLException
```
    Specified by:
    
    isClosed in interface Statement
    
    Throws:
    
    SQLException
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    Specified by:
    
    isWrapperFor in interface Wrapper
    
    Throws:
    
    SQLException
  - unwrap
```
public <T> T unwrap(Class<T> iface)
         throws SQLException
```
    Specified by:
    
    unwrap in interface Wrapper
    
    Throws:
    
    SQLException
  - setPoolable
```
public void setPoolable(boolean poolable)
                 throws SQLException
```
    Specified by:
    
    setPoolable in interface Statement
    
    Throws:
    
    SQLException
  - isPoolable
```
public boolean isPoolable()
                   throws SQLException
```
    Specified by:
    
    isPoolable in interface Statement
    
    Throws:
    
    SQLException
  - closeOnCompletion
```
public void closeOnCompletion()
                       throws SQLException
```
    Specified by:
    
    closeOnCompletion in interface Statement
    
    Throws:
    
    SQLException
  - isCloseOnCompletion
```
public boolean isCloseOnCompletion()
                            throws SQLException
```
    Specified by:
    
    isCloseOnCompletion in interface Statement
    
    Throws:
    
    SQLException
  - finalize
```
protected void finalize()
                 throws Throwable
```
    Overrides:
    
    finalize in class Object
    
    Throws:
    
    Throwable

Class DelegatingStatement

Field Summary

Fields inherited from interface java.sql.Statement

Constructor Summary

Method Summary

Methods inherited from class org.apache.tomcat.dbcp.dbcp2.AbandonedTrace

Methods inherited from class java.lang.Object

Constructor Detail

DelegatingStatement

Method Detail

getDelegate

getInnermostDelegate

setDelegate

isClosedInternal

setClosedInternal

checkOpen

close

handleException

activate

passivate

getConnection

getConnectionInternal

executeQuery

getResultSet

executeUpdate

getMaxFieldSize

setMaxFieldSize

getMaxRows

setMaxRows

setEscapeProcessing

getQueryTimeout

setQueryTimeout

cancel

getWarnings

clearWarnings

setCursorName

execute

getUpdateCount

getMoreResults

setFetchDirection

getFetchDirection

setFetchSize

getFetchSize

getResultSetConcurrency

getResultSetType

addBatch

clearBatch

executeBatch

toString

getMoreResults

getGeneratedKeys

executeUpdate

executeUpdate

executeUpdate

execute

execute

execute

getResultSetHoldability

isClosed

isWrapperFor

unwrap

setPoolable

isPoolable

closeOnCompletion

isCloseOnCompletion

finalize