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     */
020    package org.sonar.api.batch.analyzer.measure.internal;
021    
022    import com.google.common.base.Preconditions;
023    import org.sonar.api.batch.analyzer.measure.AnalyzerMeasureBuilder;
024    import org.sonar.api.batch.fs.InputFile;
025    import org.sonar.api.batch.measure.Metric;
026    
027    import java.io.Serializable;
028    
029    public class DefaultAnalyzerMeasureBuilder<G extends Serializable> implements AnalyzerMeasureBuilder<G> {
030    
031      Boolean onProject = null;
032      InputFile file;
033      Metric<G> metric;
034      G value;
035    
036      @Override
037      public DefaultAnalyzerMeasureBuilder<G> onFile(InputFile inputFile) {
038        onProject(false);
039        Preconditions.checkNotNull(inputFile, "inputFile should be non null");
040        this.file = inputFile;
041        return this;
042      }
043    
044      @Override
045      public DefaultAnalyzerMeasureBuilder<G> onProject() {
046        onProject(true);
047        this.file = null;
048        return this;
049      }
050    
051      private void onProject(boolean isOnProject) {
052        Preconditions.checkState(this.onProject == null, "onFile or onProject can be called only once");
053        this.onProject = isOnProject;
054      }
055    
056      @Override
057      public DefaultAnalyzerMeasureBuilder<G> forMetric(Metric<G> metric) {
058        Preconditions.checkState(metric != null, "Metric already defined");
059        Preconditions.checkNotNull(metric, "metric should be non null");
060        this.metric = metric;
061        return this;
062      }
063    
064      @Override
065      public DefaultAnalyzerMeasureBuilder<G> withValue(G value) {
066        Preconditions.checkState(this.value == null, "Measure value already defined");
067        Preconditions.checkNotNull(value, "Measure value can't be null");
068        this.value = value;
069        return this;
070      }
071    
072      @Override
073      public DefaultAnalyzerMeasure<G> build() {
074        return new DefaultAnalyzerMeasure<G>(this);
075      }
076    }