org.apache.taglibs.standard.tag.common.sql

Class TransactionTagSupport

java.lang.Object

javax.servlet.jsp.tagext.TagSupport

org.apache.taglibs.standard.tag.common.sql.TransactionTagSupport

All Implemented Interfaces:

java.io.Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag, javax.servlet.jsp.tagext.TryCatchFinally

Direct Known Subclasses:

TransactionTag, TransactionTag

public abstract class TransactionTagSupport
extends javax.servlet.jsp.tagext.TagSupport
implements javax.servlet.jsp.tagext.TryCatchFinally

Tag handler for <Transaction> in JSTL.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.sql.Connection	conn
protected boolean	dataSourceSpecified
private int	isolation
private int	origIsolation
protected java.lang.Object	rawDataSource
private static java.lang.String	TRANSACTION_READ_COMMITTED
private static java.lang.String	TRANSACTION_READ_UNCOMMITTED
private static java.lang.String	TRANSACTION_REPEATABLE_READ
private static java.lang.String	TRANSACTION_SERIALIZABLE

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

Constructors

Constructor and Description
TransactionTagSupport()

Method Summary

Modifier and Type	Method and Description
void	doCatch(java.lang.Throwable t) Rollbacks the transaction and rethrows the Throwable.
int	doEndTag() Commits the transaction.
void	doFinally() Restores the Connection to its initial state and closes it.
int	doStartTag() Prepares for execution by setting the initial state, such as getting the Connection and preparing it for the transaction.
java.sql.Connection	getSharedConnection() Called by nested parameter elements to get a reference to the Connection.
void	release()
void	setIsolation(java.lang.String iso) Setter method for the transaction isolation level.

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TRANSACTION_READ_COMMITTED

private static final java.lang.String TRANSACTION_READ_COMMITTED

See Also:

Constant Field Values

TRANSACTION_READ_UNCOMMITTED

private static final java.lang.String TRANSACTION_READ_UNCOMMITTED

See Also:

Constant Field Values

TRANSACTION_REPEATABLE_READ

private static final java.lang.String TRANSACTION_REPEATABLE_READ

See Also:

Constant Field Values

TRANSACTION_SERIALIZABLE

private static final java.lang.String TRANSACTION_SERIALIZABLE

See Also:

Constant Field Values

rawDataSource

protected java.lang.Object rawDataSource

dataSourceSpecified

protected boolean dataSourceSpecified

conn

private java.sql.Connection conn

isolation

private int isolation

origIsolation

private int origIsolation

Constructor Detail

TransactionTagSupport

public TransactionTagSupport()

Method Detail

doStartTag

public int doStartTag()
               throws javax.servlet.jsp.JspException

Prepares for execution by setting the initial state, such as getting the Connection and preparing it for the transaction.

Specified by:

doStartTag in interface javax.servlet.jsp.tagext.Tag

Overrides:

doStartTag in class javax.servlet.jsp.tagext.TagSupport

Throws:

javax.servlet.jsp.JspException

doEndTag

public int doEndTag()
             throws javax.servlet.jsp.JspException

Commits the transaction.

Specified by:

doEndTag in interface javax.servlet.jsp.tagext.Tag

Overrides:

doEndTag in class javax.servlet.jsp.tagext.TagSupport

Throws:

javax.servlet.jsp.JspException

doCatch

public void doCatch(java.lang.Throwable t)
             throws java.lang.Throwable

Rollbacks the transaction and rethrows the Throwable.

Specified by:

doCatch in interface javax.servlet.jsp.tagext.TryCatchFinally

Throws:

java.lang.Throwable

doFinally

public void doFinally()

Restores the Connection to its initial state and closes it.

Specified by:

doFinally in interface javax.servlet.jsp.tagext.TryCatchFinally

release

public void release()

Specified by:

release in interface javax.servlet.jsp.tagext.Tag

Overrides:

release in class javax.servlet.jsp.tagext.TagSupport

setIsolation

public void setIsolation(java.lang.String iso)
                  throws javax.servlet.jsp.JspTagException

Setter method for the transaction isolation level.

Throws:

javax.servlet.jsp.JspTagException

getSharedConnection

public java.sql.Connection getSharedConnection()

Called by nested parameter elements to get a reference to the Connection.