TraceLevel (IBM InfoSphere Streams Java Operator API)

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java.lang.Object
- org.apache.log4j.Priority
- - org.apache.log4j.Level
  - - com.ibm.streams.operator.log4j.TraceLevel

All Implemented Interfaces:: java.io.Serializable

public class TraceLevel
extends org.apache.log4j.Level

Convenience class to provide SPL trace levels through the org.apache.log4j facility.
The SPL trace levels in descending order are:

ERROR (highest value)
WARN
INFO
DEBUG
TRACE (lowest value)

When a message is logged to the SPL trace facility its org.apache.log4j.Level is mapped to the SPL trace level as follows:

***SPL trace level mapping***
SPL Trace Level	`java.util.logging.Level`

`error`	`Level.FATAL`
	`Level.ERROR`
	`ERROR`
`warn`	`Level.WARN`
`warn`	`WARN`
`info`	`Level.INFO`
`info`	`INFO`
`debug`	`Level.DEBUG`
`debug`	`DEBUG`
`trace`	`Level.TRACE`
`trace`	`TRACE`

Since:: InfoSphere® Streams Version 3.0
See Also:: Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static TraceLevel`	`DEBUG` DEBUG is a message level for debug level tracing information including method entry, exit, and return values.
`static TraceLevel`	`ERROR` ERROR is a level indicating the operator cannot continue.
`static java.lang.String`	`IBM_COPYRIGHT`
`static TraceLevel`	`INFO` INFO is level indicating general information outlining overall operator progress.
`static TraceLevel`	`TRACE` TRACE is a level for more detailed trace that includes all the detail that is needed to debug problems.
`static TraceLevel`	`WARN` WARN is a level indicating a potential error or impending error.

Fields inherited from class org.apache.log4j.Level
ALL, FATAL, OFF, TRACE_INT

Fields inherited from class org.apache.log4j.Priority
ALL_INT, DEBUG_INT, ERROR_INT, FATAL_INT, INFO_INT, OFF_INT, WARN_INT

Method Summary
- Methods inherited from class org.apache.log4j.Level
  toLevel, toLevel, toLevel, toLevel
- Methods inherited from class org.apache.log4j.Priority
  equals, getAllPossiblePriorities, getSyslogEquivalent, isGreaterOrEqual, toInt, toPriority, toPriority, toPriority, toPriority, toString
- Methods inherited from class java.lang.Object
  clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - IBM_COPYRIGHT
```
public static final java.lang.String IBM_COPYRIGHT
```
    See Also:
    Constant Field Values
  - ERROR
```
public static TraceLevel ERROR
```
    ERROR is a level indicating the operator cannot continue. All internal or unexpected failures should be traced at this level. This level is equal to Level.ERROR.
  - WARN
```
public static TraceLevel WARN
```
    WARN is a level indicating a potential error or impending error. This level can also indicate a progressive failure (for example, the potential leaking of resources). This level and is equal to Level.WARN.
  - INFO
```
public static TraceLevel INFO
```
    INFO is level indicating general information outlining overall operator progress. Information that helps to give context to a trace, often when an operator is being initialized, handling allPortsReady() or being shutdown. This level is equal to Level.INFO.
  - DEBUG
```
public static TraceLevel DEBUG
```
    DEBUG is a message level for debug level tracing information including method entry, exit, and return values. This level is equal to Level.DEBUG.
  - TRACE
```
public static TraceLevel TRACE
```
    TRACE is a level for more detailed trace that includes all the detail that is needed to debug problems. This level is equal to Level.TRACE.