ThrowableCallStack (Apache Tomcat 8.0.53 API Documentation)

java.lang.Object
- org.apache.tomcat.dbcp.pool2.impl.ThrowableCallStack

All Implemented Interfaces:

CallStack
```
public class ThrowableCallStack
extends java.lang.Object
implements CallStack
```
CallStack strategy that uses the stack trace from a Throwable. This strategy, while slower than the SecurityManager implementation, provides call stack method names and other metadata in addition to the call stack of classes.

Since:

2.4.3

See Also:
Throwable.fillInStackTrace()

Constructor Summary

Constructors
Constructor and Description

ThrowableCallStack(java.lang.String messageFormat, boolean useTimestamp)
Create a new instance.

Constructors
Constructor and Description
`ThrowableCallStack(java.lang.String messageFormat, boolean useTimestamp)` Create a new instance.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clear()` Clears the current stack trace snapshot.
`void`	`fillInStackTrace()` Takes a snapshot of the current call stack.
`boolean`	`printStackTrace(java.io.PrintWriter writer)` Prints the current stack trace if available to a PrintWriter.

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

- Constructor Detail
  - ThrowableCallStack
```
public ThrowableCallStack(java.lang.String messageFormat,
                  boolean useTimestamp)
```
    Create a new instance.
    
    Parameters:
    messageFormat - message format
    useTimestamp - whether to format the dates in the output message or not
- Method Detail
  - printStackTrace
```
public boolean printStackTrace(java.io.PrintWriter writer)
```
    Description copied from interface: CallStack
    
    Prints the current stack trace if available to a PrintWriter. The format is undefined and is primarily useful for debugging issues with PooledObject usage in user code.
    
    Specified by:
    
    printStackTrace in interface CallStack
    
    Parameters:
    writer - a PrintWriter to write the current stack trace to if available
    
    Returns:
    true if a stack trace was available to print or false if nothing was printed
  - fillInStackTrace
```
public void fillInStackTrace()
```
    Description copied from interface: CallStack
    
    Takes a snapshot of the current call stack. Subsequent calls to CallStack.printStackTrace(PrintWriter) will print out that stack trace until it is cleared.
    
    Specified by:
    
    fillInStackTrace in interface CallStack
  - clear
```
public void clear()
```
    Description copied from interface: CallStack
    
    Clears the current stack trace snapshot. Subsequent calls to CallStack.printStackTrace(PrintWriter) will be no-ops until another call to CallStack.fillInStackTrace().
    
    Specified by:
    
    clear in interface CallStack

Class ThrowableCallStack

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ThrowableCallStack

Method Detail

printStackTrace

fillInStackTrace

clear