com.github.nill14.parsers.dependency.impl.ModuleRankingsPrinter Maven / Gradle / Ivy

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Implementation of directed acyclic graph along with some graph algorithms and dependency management.

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package com.github.nill14.parsers.dependency.impl;

import java.io.PrintStream;
import java.util.Collection;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;

import com.github.nill14.parsers.dependency.IDependencyGraph;
import com.google.common.collect.Lists;

public class ModuleRankingsPrinter {
	
	private final IDependencyGraph dependencyGraph;
	private final Map moduleRankings;
	private final List topologicalOrder;

	
	public ModuleRankingsPrinter(IDependencyGraph dependencyGraph) {
		this.dependencyGraph = dependencyGraph;
		moduleRankings = dependencyGraph.getModuleRankings();
		topologicalOrder = dependencyGraph.getTopologicalOrder();
	}
	
	
	private String printLine(M vertex, boolean executionBit, int ranking) {
		if (executionBit) {
			return String.format("* %s (%d)", vertex, ranking);
		} else {
			return String.format("  %s (%d)", vertex, ranking);
		}
	}
	
	public Collection getLines() {
		Collection result = Lists.newArrayList();
		for (M node : topologicalOrder) {
			boolean executionBit = dependencyGraph.getDirectDependencies(node).isEmpty();
			int ranking = moduleRankings.get(node);
			String line = printLine(node, executionBit, ranking);
			result.add(line);
		}
		return result;
	}
	
	/**
	 * Outputs module rankings to System.out
	 */
	public void toConsole() {
		toPrintStream(System.out);
	}
	
	/**
	 * Outputs module rankings to a PrintStream
	 */
	public void toPrintStream(PrintStream p) {
		p.println("Module Rankings");
		for (String line : getLines()) {
			p.println(line);
		}
	}
	
	/**
	 * Outputs module rankings to {@link Logger#info(String)}
	 */
	public void toInfoLog(Logger log) {
		if (log.isInfoEnabled()) {
			log.info("Module Rankings");
			for (String line : getLines()) {
				log.info(line);
			}
		}
	}
	
	/**
	 * Outputs module rankings to {@link Logger#debug(String)}
	 */
	public void toDebugLog(Logger log) {
		if (log.isDebugEnabled()) {
			log.debug("Module Rankings");
			for (String line : getLines()) {
				log.debug(line);
			}
		}
	}

}