package org.apache.maven.building;

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 * to you under the Apache License, Version 2.0 (the
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 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
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 * KIND, either express or implied.  See the License for the
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import java.util.List;

Collects problems that are encountered during settings building.
Author:
Benjamin Bentmann, Robert Scholte/**
 * Collects problems that are encountered during settings building.
 *
 * @author Benjamin Bentmann
 * @author Robert Scholte
 */
public interface ProblemCollector
{

    
Adds the specified problem.
Either message or exception is required
Params:
severity – The severity of the problem, must not be null.
message – The detail message of the problem, may be null.
line – The one-based index of the line containing the problem or -1 if unknown.
column – The one-based index of the column containing the problem or -1 if unknown.
cause – The cause of the problem, may be null./**
     * Adds the specified problem.
     * Either message or exception is required
     *
     * @param severity The severity of the problem, must not be {@code null}.
     * @param message The detail message of the problem, may be {@code null}.
     * @param line The one-based index of the line containing the problem or {@code -1} if unknown.
     * @param column The one-based index of the column containing the problem or {@code -1} if unknown.
     * @param cause The cause of the problem, may be {@code null}.
     */
    void add( Problem.Severity severity, String message, int line, int column, Exception cause );
    
    
The next messages will be bound to this source. When calling this method again, previous messages keep
their source, but the next messages will use the new source.
Params:
source – /**
     * The next messages will be bound to this source. When calling this method again, previous messages keep
     * their source, but the next messages will use the new source.
     * 
     * @param source
     */
    void setSource( String source );
    
    
Returns:
the collected Problems, never null/**
     * 
     * @return the collected Problems, never {@code null}
     */
    List<Problem> getProblems();

}