001/*
002 * SonarQube, open source software quality management tool.
003 * Copyright (C) 2008-2014 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * SonarQube is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * SonarQube is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019 */
020package org.sonar.api.batch.sensor.measure.internal;
021
022import com.google.common.base.Preconditions;
023import org.sonar.api.batch.fs.InputFile;
024import org.sonar.api.batch.measure.Metric;
025import org.sonar.api.batch.sensor.measure.MeasureBuilder;
026
027import java.io.Serializable;
028
029public class DefaultMeasureBuilder<G extends Serializable> implements MeasureBuilder<G> {
030
031  boolean onProject = false;
032  InputFile file;
033  Metric<G> metric;
034  G value;
035
036  @Override
037  public DefaultMeasureBuilder<G> onFile(InputFile inputFile) {
038    Preconditions.checkState(!this.onProject, "onProject already called");
039    Preconditions.checkState(this.file == null, "onFile already called");
040    Preconditions.checkNotNull(inputFile, "InputFile should be non null");
041    this.file = inputFile;
042    return this;
043  }
044
045  @Override
046  public DefaultMeasureBuilder<G> onProject() {
047    Preconditions.checkState(!this.onProject, "onProject already called");
048    Preconditions.checkState(this.file == null, "onFile already called");
049    this.onProject = true;
050    return this;
051  }
052
053  @Override
054  public DefaultMeasureBuilder<G> forMetric(Metric<G> metric) {
055    Preconditions.checkState(metric != null, "Metric already defined");
056    Preconditions.checkNotNull(metric, "metric should be non null");
057    this.metric = metric;
058    return this;
059  }
060
061  @Override
062  public DefaultMeasureBuilder<G> withValue(G value) {
063    Preconditions.checkState(this.value == null, "Measure value already defined");
064    Preconditions.checkNotNull(value, "Measure value can't be null");
065    this.value = value;
066    return this;
067  }
068
069  @Override
070  public DefaultMeasure<G> build() {
071    DefaultMeasure<G> result = new DefaultMeasure<G>(this);
072    reset();
073    return result;
074  }
075
076  private void reset() {
077    onProject = false;
078    file = null;
079    metric = null;
080    value = null;
081  }
082}