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package org.etlunit.feature;

import org.etlunit.ClassDirector;
import org.etlunit.NullClassDirector;
import org.etlunit.parser.ETLTestClass;
import org.etlunit.parser.ETLTestMethod;
import org.etlunit.parser.ETLTestOperation;

import java.util.regex.Pattern;

public class PatternedClassDirectorFeature extends AbstractFeature
{
	private final Pattern clsNamePattern;
	private final Pattern mthdNamePattern;
	private final Pattern operNamePattern;
	private final String instanceName;

	private final class PatternClassDirector extends NullClassDirector
	{
		@Override
		public response_code accept(ETLTestClass cl)
		{
			if (clsNamePattern != null)
			{
				return clsNamePattern.matcher(cl.getQualifiedName()).find() ? response_code.accept : response_code.reject;
			}

			return response_code.defer;
		}

		@Override
		public response_code accept(ETLTestMethod mt)
		{
			if (mthdNamePattern != null)
			{
				return mthdNamePattern.matcher(mt.getName()).find() ? response_code.accept : response_code.reject;
			}

			return response_code.defer;
		}

		@Override
		public response_code accept(ETLTestOperation op)
		{
			if (operNamePattern != null)
			{
				return operNamePattern.matcher(op.getQualifiedName()).find() ? response_code.accept : response_code.reject;
			}

			return response_code.defer;
		}
	}

	private final PatternClassDirector patternClassDirector = new PatternClassDirector();

	public PatternedClassDirectorFeature(String instanceName, String clsNamePattern, String mthdNamePattern, String operNamePattern)
	{
		this.clsNamePattern = clsNamePattern != null ? Pattern.compile(clsNamePattern, Pattern.CASE_INSENSITIVE) : null;
		this.mthdNamePattern = mthdNamePattern != null ? Pattern.compile(mthdNamePattern, Pattern.CASE_INSENSITIVE) : null;
		this.operNamePattern = operNamePattern != null ? Pattern.compile(operNamePattern, Pattern.CASE_INSENSITIVE) : null;

		this.instanceName = instanceName;
	}

	@Override
	public String getFeatureName()
	{
		return "pattern-class-director_" + instanceName;
	}

	@Override
	public ClassDirector getDirector()
	{
		return patternClassDirector;
	}

	@Override
	public long getPriorityLevel()
	{
		return -1L;
	}
}