org.slf4j.Marker Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/**
* Copyright (c) 2004-2011 QOS.ch
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
package org.slf4j;
import java.io.Serializable;
import java.util.Iterator;
/**
* Markers are named objects used to enrich log statements. Conforming logging
* system implementations of SLF4J should determine how information conveyed by
* any markers are used, if at all. Many conforming logging systems ignore marker
* data entirely.
*
* Markers can contain references to nested markers, which in turn may
* contain references of their own. Note that the fluent API (new in 2.0) allows adding
* multiple markers to a logging statement. It is often preferable to use
* multiple markers instead of nested markers.
*
*
* @author Ceki Gülcü
*/
public interface Marker extends Serializable {
/**
* This constant represents any marker, including a null marker.
*/
public final String ANY_MARKER = "*";
/**
* This constant represents any non-null marker.
*/
public final String ANY_NON_NULL_MARKER = "+";
/**
* Get the name of this Marker.
*
* @return name of marker
*/
public String getName();
/**
* Add a reference to another Marker.
*
* Note that the fluent API allows adding multiple markers to a logging statement.
* It is often preferable to use multiple markers instead of nested markers.
*
*
* @param reference
* a reference to another marker
* @throws IllegalArgumentException
* if 'reference' is null
*/
public void add(Marker reference);
/**
* Remove a marker reference.
*
* @param reference
* the marker reference to remove
* @return true if reference could be found and removed, false otherwise.
*/
public boolean remove(Marker reference);
/**
* @deprecated Replaced by {@link #hasReferences()}.
*/
@Deprecated
public boolean hasChildren();
/**
* Does this marker have any references?
*
* @return true if this marker has one or more references, false otherwise.
*/
public boolean hasReferences();
/**
* Returns an Iterator which can be used to iterate over the references of this
* marker. An empty iterator is returned when this marker has no references.
*
* @return Iterator over the references of this marker
*/
public Iterator iterator();
/**
* Does this marker contain a reference to the 'other' marker? Marker A is defined
* to contain marker B, if A == B or if B is referenced by A, or if B is referenced
* by any one of A's references (recursively).
*
* @param other
* The marker to test for inclusion.
* @throws IllegalArgumentException
* if 'other' is null
* @return Whether this marker contains the other marker.
*/
public boolean contains(Marker other);
/**
* Does this marker contain the marker named 'name'?
*
* If 'name' is null the returned value is always false.
*
* @param name The marker name to test for inclusion.
* @return Whether this marker contains the other marker.
*/
public boolean contains(String name);
/**
* Markers are considered equal if they have the same name.
*
* @param o
* @return true, if this.name equals o.name
*
* @since 1.5.1
*/
public boolean equals(Object o);
/**
* Compute the hash code based on the name of this marker.
* Note that markers are considered equal if they have the same name.
*
* @return the computed hashCode
* @since 1.5.1
*/
public int hashCode();
}