implement multilevel csv provider

etc/Jenkinsfile

@@ -8,6 +8,7 @@ pipeline {
 				publishReport name: "JSON Report", displayType: "dual", provider: json(pattern: "etc/report-1-part-*.json")
 				publishReport name: "XML Report", displayType: "dual", provider: xml(pattern: "etc/*.xml")
 				publishReport name: "YAML Report", displayType: "dual", provider: yaml(pattern: "etc/*.yaml")
+				publishReport name: "CSV Report", displayType: "dual", provider: csv(id: "csv-one", pattern: "etc/*.csv")
 			} 
 		}
 	}

etc/report.csv

@@ -1,3 +1,7 @@
-id,name,incorrect,manually,accurate
-aktie,Aktie,3441,348,5199
-derivat,Derivat,593,9028,1008
+Level 1,Level 2,Level 3,incorrect,manually,accurate
+Aktie,Aktie 1,Aktie 1 1,13,3,59
+Aktie,Aktie 1,Aktie 1 2,31,48,9
+Aktie,Aktie 1,Aktie 1 3,34,8,51
+Derivat,Derivat 1,,1,2,3
+Derivat,Derivat 2,,5,9,1
+Not Found,,,1,3,9

src/main/java/io/jenkins/plugins/reporter/model/Provider.java

@@ -6,6 +6,8 @@
 import hudson.model.Descriptor;
 import hudson.model.Run;
 import hudson.util.FormValidation;
+import io.jenkins.plugins.reporter.Messages;
+import io.jenkins.plugins.reporter.provider.Csv;
 import io.jenkins.plugins.reporter.util.FilesScanner;
 import io.jenkins.plugins.reporter.util.LogHandler;
 import io.jenkins.plugins.util.JenkinsFacade;
@@ -21,10 +23,10 @@
 public abstract class Provider extends AbstractDescribableImpl<Provider> implements Serializable {
 
     private static final long serialVersionUID = -1356603376948787474L;
-
-    private String name = StringUtils.EMPTY;
 
     private String pattern = StringUtils.EMPTY;
+
+    private String id = StringUtils.EMPTY;
 
     private JenkinsFacade jenkins = new JenkinsFacade();
 
@@ -39,16 +41,31 @@ protected Object readResolve() {
         return this;
     }
 
+    /**
+     * Sets the id of this provider.
+     * 
+     * @param id
+     *         the id
+     */
     @DataBoundSetter
-    public void setName(final String name) {
-        this.name = name;
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getId() {
+        return id;
     }
 
-    public String getName() {
-        return name;
+    /**
+     * Returns the actual ID of the tool. If no user defined ID is given, then the default ID is returned.
+     *
+     * @return the ID
+     * @see #setId(String)
+     */
+    public String getActualId() {
+        return StringUtils.defaultIfBlank(getId(), getDescriptor().getId());
     }
 
-
     /**
      * Sets the Ant file-set pattern of files to work with. If the pattern is undefined then the console log is
      * scanned.
@@ -109,11 +126,11 @@ public abstract static class ProviderDescriptor extends Descriptor<Provider> {
          * Creates a new instance of {@link ProviderDescriptor} with the given ID.
          *
          * @param defaultId
-         *         the unique ID of the tool
+         *         the unique ID of the provider
          */
         protected ProviderDescriptor(final String defaultId) {
             super();
-
+            
             this.defaultId = defaultId;
         }
 
@@ -156,5 +173,14 @@ public FormValidation doCheckPattern(@QueryParameter("pattern") String pattern)
 
             return FormValidation.ok();
         }
+
+        @POST
+        public FormValidation doCheckId(@QueryParameter("id") String id) {
+            if (getSymbolName().equals("csv") && StringUtils.isEmpty(id)) {
+                return FormValidation.error(Messages.Provider_Error());
+            }
+
+            return FormValidation.ok();
+        }
     }
 }

src/main/java/io/jenkins/plugins/reporter/model/Report.java

@@ -9,7 +9,7 @@
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-public class Report implements Serializable {
+public class Report extends ReportBase implements Serializable {
 
     private static final long serialVersionUID = 302445084497230108L;
 
@@ -166,56 +166,18 @@ public LinkedHashMap<String, Integer> aggregate(List<Item> items) {
                 .collect(Collectors.groupingBy(Map.Entry::getKey, LinkedHashMap::new, Collectors.summingInt(Map.Entry::getValue)));
     }
 
-    public List<String> getColorIds() {
-        if (aggregate().size() == 1) {
-            return flattItems(getItems()).stream().map(Item::getId).collect(Collectors.toList());
-        }
-
-        return new ArrayList<>(aggregate().keySet());
-    }
-
-    private List<Item> flattItems(List<Item> items)
-    {
-        List<Item> flatten = new ArrayList<>();
-
-        for (Item i: items) {
-            if (i.hasItems()) {
-                flatten.addAll(flattItems(i.getItems()));
-            }
-
-            flatten.add(i);
-        }
-
-        return flatten;
-    }
-
     public Optional<Item> findItem(String id) {
         return findItem(id, items);
     }
 
-    public Optional<Item> findItem(String id, List<Item> items) {
-        if (items != null) {
-            for (Item i: items) {
-                if (i.getId().equals(id)) {
-                    return Optional.of(i);
-                } else {
-                    Optional<Item> sub = findItem(id, i.getItems());
-                    if (sub.isPresent()) {
-                        return sub;
-                    }
-                }
-            }
+
+    public List<String> getColorIds() {
+        if (aggregate().size() == 1) {
+            return flattItems(getItems()).stream().map(Item::getId).collect(Collectors.toList());
         }
 
-        return Optional.empty();
+        return new ArrayList<>(aggregate().keySet());
     }
-
-
-    /**
-     * Aggregates the results of all items. The values are added together, grouped by key. 
-     *
-     * @return the aggregated result.
-     */
 
     public LinkedHashMap<String, Integer> aggregate() {
         return aggregate(getItems());

src/main/java/io/jenkins/plugins/reporter/model/ReportBase.java

@@ -0,0 +1,60 @@
+package io.jenkins.plugins.reporter.model;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+public abstract class ReportBase {
+
+    /**
+     * Find the item with id in given list of items.
+     * 
+     * @param id
+     *          the id to find.
+     * @param items
+     *          the items to search in.
+     * @return
+     *          the {@link Item} as {@link Optional}.
+     */
+    public Optional<Item> findItem(String id, List<Item> items) {
+        if (items != null) {
+            for (Item i: items) {
+                if (i.getId().equals(id)) {
+                    return Optional.of(i);
+                } else {
+                    Optional<Item> sub = findItem(id, i.getItems());
+                    if (sub.isPresent()) {
+                        return sub;
+                    }
+                }
+            }
+        }
+
+        return Optional.empty();
+    }
+
+    /**
+     * Flatten all items of report.
+     * 
+     * @param items
+     *          the items to flatten.
+     *          
+     * @return
+     *          list with all items.
+     */
+    List<Item> flattItems(List<Item> items)
+    {
+        List<Item> flatten = new ArrayList<>();
+
+        for (Item i: items) {
+            if (i.hasItems()) {
+                flatten.addAll(flattItems(i.getItems()));
+            }
+
+            flatten.add(i);
+        }
+
+        return flatten;
+    }
+
+}

src/main/java/io/jenkins/plugins/reporter/model/ReportDto.java

@@ -4,13 +4,10 @@
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-
-public class ReportDto {
+import java.util.*;
 
+public class ReportDto extends ReportBase {
+
     @JsonProperty(value = "id", required = true)
     private String id;
 

src/main/java/io/jenkins/plugins/reporter/model/ReportParser.java

@@ -5,6 +5,7 @@
 import java.io.Serializable;
 
 public abstract class ReportParser implements Serializable {
+
     private static final long serialVersionUID = -7720644051441434411L;
     public abstract ReportDto parse(File file) throws IOException;