src/main/java/ru/ulstu/extractor/gitrepository/model/LineChange.java

@@ -9,8 +9,8 @@ public class LineChange extends BaseEntity {
 
     private Boolean added = false;
     private Boolean removed = false;
-    private String lineFrom;
+    private String lineFrom = "";
-    private String lineTo;
+    private String lineTo = "";
 
     public LineChange() {
 

src/main/java/ru/ulstu/extractor/gitrepository/service/GitRepositoryService.java

@@ -377,56 +377,31 @@ public class GitRepositoryService {
     }
 
     private FileChange getChange(FileChange fileChange, List<String> fileContent) {
-        int addedLine = 0;
+        int i = 0;
-        int removedLine = 0;
+        int added = 0;
-        StringBuilder builder = new StringBuilder();
+        int removed = 0;
-        boolean isRemoved = false;
+        while (i < fileContent.size()) {
-        boolean isAdded = false;
-        for (String line : fileContent) {
             LineChange lineChange = new LineChange();
-            if (line.startsWith("-")) {
+            while ((i < fileContent.size()) && fileContent.get(i).startsWith("-")) {
-                isRemoved = true;
-                if (isAdded) {
-                    isAdded = false;
-                    lineChange = setAdded(lineChange, builder);
-                    builder.setLength(0);
-                }
-                builder.append(line).append("\n");
-                removedLine++;
-            } else if (line.startsWith("+")) {
-                isAdded = true;
-                if (isRemoved) {
-                    isRemoved = false;
-                    lineChange = setRemoved(lineChange, builder);
-                    builder.setLength(0);
-                }
-                builder.append(line).append("\n");
-                addedLine++;
-            } else {
-                if (isRemoved) {
-                    lineChange = setRemoved(lineChange, builder);
-                    builder.setLength(0);
-                } else if (isAdded) {
-                    lineChange = setAdded(lineChange, builder);
-                    builder.setLength(0);
-                }
-            }
-        }
-        fileChange.setRemoved(removedLine == fileContent.size() - 1);
-        fileChange.setAdded(addedLine == fileContent.size() - 1);
-        return fileChange;
-    }
-
-    private LineChange setRemoved(LineChange lineChange, StringBuilder builder) {
-        lineChange.setLineFrom(builder.toString());
                 lineChange.setRemoved(true);
-        return lineChange;
+                lineChange.setLineFrom(lineChange.getLineFrom() + "\n" + fileContent.get(i).replaceFirst("\\-", ""));
+                removed++;
+                i++;
             }
-
+            while ((i < fileContent.size()) && fileContent.get(i).startsWith("+")) {
-    private LineChange setAdded(LineChange lineChange, StringBuilder builder) {
-        lineChange.setLineTo(builder.toString());
                 lineChange.setAdded(true);
-        return lineChange;
+                lineChange.setLineTo(lineChange.getLineTo() + "\n" + fileContent.get(i).replaceFirst("\\+", ""));
+                added++;
+                i++;
+            }
+            if (!lineChange.getLineTo().isEmpty() || !lineChange.getLineFrom().isEmpty()) {
+                fileChange.getLineChanges().add(lineChange);
+            }
+            i++;
+        }
+        fileChange.setRemoved(removed == fileContent.size());
+        fileChange.setAdded(added == fileContent.size());
+        return fileChange;
     }
 
     public Page<GitRepository> findAll(Pageable pageable) {

src/main/java/ru/ulstu/extractor/heuristic/api/StructuralUnitIdentifier.java

@@ -107,4 +107,6 @@ public abstract class StructuralUnitIdentifier {
     public abstract boolean isResourceClass(String sourceCode);
 
     protected abstract boolean isResourceClass(File file);
+
+    public abstract List<String> getClasses(String sourceCode);
 }

src/main/java/ru/ulstu/extractor/heuristic/service/JavaIdentifier.java

@@ -6,6 +6,7 @@ import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.ast.body.FieldDeclaration;
 import com.github.javaparser.ast.body.MethodDeclaration;
 import com.github.javaparser.ast.body.TypeDeclaration;
+import com.github.javaparser.ast.nodeTypes.NodeWithSimpleName;
 import org.springframework.stereotype.Service;
 import ru.ulstu.extractor.heuristic.api.StructuralUnitIdentifier;
 import ru.ulstu.extractor.heuristic.component.BuildTool;
@@ -19,6 +20,7 @@ import ru.ulstu.extractor.util.StringUtils;
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
@@ -52,6 +54,9 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
     }
 
     public boolean canAppliedToCode(String sourceCode) {
+        if (sourceCode == null || sourceCode.isEmpty()) {
+            return false;
+        }
         return getMainProgrammingLanguage(sourceCode).orElse(null) instanceof JavaProgrammingLanguage;
     }
 
@@ -169,12 +174,7 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
     }
 
     private boolean sourceCodeContainsClass(String sourceCode) {
-        JavaParser parser = new JavaParser();
+        return getClasses(sourceCode).size() > 0;
-        ParseResult<CompilationUnit> parseResult = parser.parse(sourceCode);
-        if (parseResult.getResult().isPresent() && parseResult.getResult().get().findCompilationUnit().isPresent()) {
-            return parseResult.getResult().get().getTypes().stream().findAny().isPresent();
-        }
-        return false;
     }
 
     @Override
@@ -243,4 +243,14 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
         }
         return false;
     }
+
+    @Override
+    public List<String> getClasses(String sourceCode) {
+        JavaParser parser = new JavaParser();
+        ParseResult<CompilationUnit> parseResult = parser.parse(sourceCode);
+        if (parseResult.getResult().isPresent() && parseResult.getResult().get().findCompilationUnit().isPresent()) {
+            return parseResult.getResult().get().getTypes().stream().map(NodeWithSimpleName::getNameAsString).collect(Collectors.toList());
+        }
+        return new ArrayList<>();
+    }
 }

src/main/java/ru/ulstu/extractor/ts/creator/db/ClassTS.java

@@ -3,36 +3,64 @@ package ru.ulstu.extractor.ts.creator.db;
 import org.springframework.stereotype.Component;
 import ru.ulstu.extractor.branch.model.Branch;
 import ru.ulstu.extractor.branch.service.BranchService;
+import ru.ulstu.extractor.commit.model.Commit;
+import ru.ulstu.extractor.commit.service.CommitService;
+import ru.ulstu.extractor.gitrepository.model.FileChange;
+import ru.ulstu.extractor.gitrepository.model.LineChange;
+import ru.ulstu.extractor.heuristic.api.StructuralUnitIdentifier;
 import ru.ulstu.extractor.ts.model.TimeSeries;
 import ru.ulstu.extractor.ts.model.TimeSeriesType;
+import ru.ulstu.extractor.ts.model.TimeSeriesValue;
 import ru.ulstu.extractor.ts.service.TimeSeriesService;
-import ru.ulstu.extractor.ts.util.Dummy;
 
-import java.util.Collections;
+import java.util.ArrayList;
 import java.util.List;
 
 @Component
 public class ClassTS extends DBTimeSeriesCreator {
     private final TimeSeriesService timeSeriesService;
+    private final CommitService commitService;
     private final BranchService branchService;
+    private final StructuralUnitIdentifier structuralUnitIdentifier;
 
     public ClassTS(TimeSeriesService timeSeriesService,
-                   BranchService branchService) {
+                   CommitService commitService,
+                   BranchService branchService,
+                   StructuralUnitIdentifier structuralUnitIdentifier) {
         this.timeSeriesService = timeSeriesService;
+        this.commitService = commitService;
         this.branchService = branchService;
+        this.structuralUnitIdentifier = structuralUnitIdentifier;
     }
 
     @Override
     public List<TimeSeries> getTimeSeries(Branch branch) {
-        return Collections.singletonList(
+        List<TimeSeries> timeSeriesResult = new ArrayList<>();
-                new TimeSeries(
+        List<Commit> commits = new ArrayList<>(commitService.findByRepositoryIdAndName(branch.getGitRepository().getId(),
+                branch.getName()));
+        TimeSeries timeSeries = new TimeSeries(
                 String.format("%s %s %s",
                         branch.getGitRepository().getName(),
                         branch.getName(),
                         getTimeSeriesType().getDescription()),
-                        branchService.findByRepositoryAndName(branch.getGitRepository(), branch.getName()),
+                branchService.findByRepositoryAndName(branch.getGitRepository(),
-                        getTimeSeriesType(),
+                        branch.getName()),
-                        Dummy.getDefaultTimeSeries()));
+                getTimeSeriesType());
+        for (Commit commit : commits) {
+            double value = 0;
+            for (FileChange fileChange : commit.getFileChanges()) {
+                for (LineChange lineChange : fileChange.getLineChanges()) {
+                    if (lineChange.getLineTo() != null && !lineChange.getLineTo().isEmpty()) {
+                        value += structuralUnitIdentifier.getClasses(lineChange.getLineTo()).size();
+                    }
+                }
+            }
+            timeSeries.getValues().add(new TimeSeriesValue(commit.getDate(), value));
+        }
+        if (!timeSeries.getValues().isEmpty()) {
+            timeSeriesResult.add(timeSeries);
+        }
+        return timeSeriesResult;
     }
 
     @Override

src/main/java/ru/ulstu/extractor/ts/model/TimeSeriesType.java

@@ -4,7 +4,7 @@ public enum TimeSeriesType {
     COMMITS("Временной ряд коммитов"),
     AUTHOR_COMMITS("Временной ряд коммитов авторов"),
     BRANCHES("Временной ряд веток"),
-    CLASSES("Временной ряд классов"),
+    CLASSES("Временной ряд измененных классов"),
     DEPENDENCIES("Временной ряд зависимостей"),
     ENTITIES("Временной ряд сущностей"),
     FILES("Временной файлов"),