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:

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.

Author:

Hans Bergsten

See Also:

Serialized Form

Field Summary

protected boolean	dataSourceSpecified
protected Object	rawDataSource

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

TransactionTagSupport()

Method Summary

void	doCatch(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.
Connection	getSharedConnection() Called by nested parameter elements to get a reference to the Connection.
void	release()
void	setIsolation(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

rawDataSource

protected Object rawDataSource

dataSourceSpecified

protected boolean dataSourceSpecified

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(Throwable t)
             throws Throwable

Rollbacks the transaction and rethrows the Throwable.

Specified by:

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

Throws:

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(String iso)
                  throws javax.servlet.jsp.JspTagException

Setter method for the transaction isolation level.

Throws:

javax.servlet.jsp.JspTagException

getSharedConnection

public Connection getSharedConnection()

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