SONAR-13582 Drop 'Language specific parameters' setting

15 files changed, 167 insertions, 377 deletions

diff --git a/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitor.java b/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitor.java
index db17b0af5f6..94cb910e2c2 100644
--- a/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitor.java
+++ b/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitor.java
@@ -94,7 +94,7 @@ public class MaintainabilityMeasuresVisitor extends PathAwareVisitorAdapter<Main
   private long computeDevelopmentCost(Component file) {
     Optional<Measure> measure = measureRepository.getRawMeasure(file, nclocMetric);
     long ncloc = measure.map(Measure::getIntValue).orElse(0);
-    return ncloc * ratingSettings.getDevCost(file.getFileAttributes().getLanguageKey());
+    return ncloc * ratingSettings.getDevCost();
   }
 
   private void computeAndSaveMeasures(Component component, Path<Counter> path) {
diff --git a/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitor.java b/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitor.java
index 0a083a1cc89..7223d35ff01 100644
--- a/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitor.java
+++ b/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitor.java
@@ -22,10 +22,10 @@ package org.sonar.ce.task.projectanalysis.qualitymodel;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
-import org.sonar.api.measures.CoreMetrics;
-import org.sonar.api.utils.KeyValueFormat;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.sonar.api.measures.CoreMetrics;
+import org.sonar.api.utils.KeyValueFormat;
 import org.sonar.ce.task.projectanalysis.component.Component;
 import org.sonar.ce.task.projectanalysis.component.CrawlerDepthLimit;
 import org.sonar.ce.task.projectanalysis.component.PathAwareVisitorAdapter;
@@ -159,7 +159,7 @@ public class NewMaintainabilityMeasuresVisitor extends PathAwareVisitorAdapter<N
   private void initNewDebtRatioCounter(Counter devCostCounter, Component file, Measure nclocDataMeasure, Set<Integer> changedLines) {
     boolean hasDevCost = false;
 
-    long lineDevCost = ratingSettings.getDevCost(file.getFileAttributes().getLanguageKey());
+    long lineDevCost = ratingSettings.getDevCost();
     for (Integer nclocLineIndex : nclocLineIndexes(nclocDataMeasure)) {
       if (changedLines.contains(nclocLineIndex)) {
         devCostCounter.incrementDevCost(lineDevCost);
diff --git a/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettings.java b/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettings.java
index e082cf57a16..b63d86b28b1 100644
--- a/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettings.java
+++ b/server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettings.java
@@ -19,73 +19,31 @@
  */
 package org.sonar.ce.task.projectanalysis.qualitymodel;
 
-import com.google.common.collect.ImmutableMap;
-import java.util.Map;
-import javax.annotation.CheckForNull;
-import javax.annotation.Nullable;
-import javax.annotation.concurrent.Immutable;
 import org.sonar.api.ce.ComputeEngineSide;
 import org.sonar.api.config.Configuration;
-import org.sonar.api.utils.MessageException;
 import org.sonar.server.measure.DebtRatingGrid;
 
-import static java.lang.String.format;
 import static org.sonar.api.CoreProperties.DEVELOPMENT_COST;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_SIZE_METRIC_KEY;
 
 @ComputeEngineSide
 public class RatingSettings {
 
   private final DebtRatingGrid ratingGrid;
   private final long defaultDevCost;
-  private final Map<String, LanguageSpecificConfiguration> languageSpecificConfigurationByLanguageKey;
 
   public RatingSettings(Configuration config) {
     ratingGrid = new DebtRatingGrid(config);
     defaultDevCost = initDefaultDevelopmentCost(config);
-    languageSpecificConfigurationByLanguageKey = initLanguageSpecificConfigurationByLanguageKey(config);
   }
 
   public DebtRatingGrid getDebtRatingGrid() {
     return ratingGrid;
   }
 
-  public long getDevCost(@Nullable String languageKey) {
-    if (languageKey != null) {
-      try {
-        LanguageSpecificConfiguration languageSpecificConfig = getSpecificParametersForLanguage(languageKey);
-        if (languageSpecificConfig != null && languageSpecificConfig.getManDays() != null) {
-          return Long.parseLong(languageSpecificConfig.getManDays());
-        }
-      } catch (NumberFormatException e) {
-        throw new IllegalArgumentException(format("The manDays for language %s is not a valid long number", languageKey), e);
-      }
-    }
-
+  public long getDevCost() {
     return defaultDevCost;
   }
 
-  @CheckForNull
-  private LanguageSpecificConfiguration getSpecificParametersForLanguage(String languageKey) {
-    return languageSpecificConfigurationByLanguageKey.get(languageKey);
-  }
-
-  private static Map<String, LanguageSpecificConfiguration> initLanguageSpecificConfigurationByLanguageKey(Configuration config) {
-    ImmutableMap.Builder<String, LanguageSpecificConfiguration> builder = ImmutableMap.builder();
-    String[] languageConfigIndexes = config.getStringArray(LANGUAGE_SPECIFIC_PARAMETERS);
-    for (String languageConfigIndex : languageConfigIndexes) {
-      String languagePropertyKey = LANGUAGE_SPECIFIC_PARAMETERS + "." + languageConfigIndex + "." + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY;
-      String languageKey = config.get(languagePropertyKey)
-        .orElseThrow(() -> MessageException.of("Technical debt configuration is corrupted. At least one language specific parameter has no Language key. " +
-          "Contact your administrator to update this configuration in the global administration section of SonarQube."));
-      builder.put(languageKey, LanguageSpecificConfiguration.create(config, languageConfigIndex));
-    }
-    return builder.build();
-  }
-
   private static long initDefaultDevelopmentCost(Configuration config) {
     try {
       return Long.parseLong(config.get(DEVELOPMENT_COST).get());
@@ -95,39 +53,4 @@ public class RatingSettings {
     }
   }
 
-  @Immutable
-  private static class LanguageSpecificConfiguration {
-    private final String language;
-    private final String manDays;
-    private final String metricKey;
-
-    private LanguageSpecificConfiguration(String language, String manDays, String metricKey) {
-      this.language = language;
-      this.manDays = manDays;
-      this.metricKey = metricKey;
-    }
-
-    static LanguageSpecificConfiguration create(Configuration config, String configurationId) {
-
-      String configurationPrefix = LANGUAGE_SPECIFIC_PARAMETERS + "." + configurationId + ".";
-
-      String language = config.get(configurationPrefix + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY).orElse(null);
-      String manDays = config.get(configurationPrefix + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY).orElse(null);
-      String metric = config.get(configurationPrefix + LANGUAGE_SPECIFIC_PARAMETERS_SIZE_METRIC_KEY).orElse(null);
-
-      return new LanguageSpecificConfiguration(language, manDays, metric);
-    }
-
-    String getLanguage() {
-      return language;
-    }
-
-    String getManDays() {
-      return manDays;
-    }
-
-    String getMetricKey() {
-      return metricKey;
-    }
-  }
 }
diff --git a/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitorTest.java b/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitorTest.java
index 4042e92afca..eb254a30d2d 100644
--- a/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitorTest.java
+++ b/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/MaintainabilityMeasuresVisitorTest.java
@@ -68,8 +68,7 @@ public class MaintainabilityMeasuresVisitorTest {
 
   static final double[] RATING_GRID = new double[] {0.1, 0.2, 0.5, 1};
 
-  static final long DEV_COST_LANGUAGE_1 = 30;
-  static final long DEV_COST_LANGUAGE_2 = 42;
+  static final long DEV_COST = 30;
 
   static final int PROJECT_REF = 1;
   static final int DIRECTORY_REF = 123;
@@ -111,8 +110,7 @@ public class MaintainabilityMeasuresVisitorTest {
   public void setUp() {
     // assumes rating configuration is consistent
     when(ratingSettings.getDebtRatingGrid()).thenReturn(new DebtRatingGrid(RATING_GRID));
-    when(ratingSettings.getDevCost(LANGUAGE_KEY_1)).thenReturn(DEV_COST_LANGUAGE_1);
-    when(ratingSettings.getDevCost(LANGUAGE_KEY_2)).thenReturn(DEV_COST_LANGUAGE_2);
+    when(ratingSettings.getDevCost()).thenReturn(DEV_COST);
 
     underTest = new VisitorsCrawler(singletonList(new MaintainabilityMeasuresVisitor(metricRepository, measureRepository, ratingSettings)));
   }
@@ -167,26 +165,26 @@ public class MaintainabilityMeasuresVisitorTest {
     underTest.visit(root);
 
     // verify measures on files
-    verifyAddedRawMeasure(1112, DEVELOPMENT_COST_KEY, Long.toString(ncloc1112 * DEV_COST_LANGUAGE_2));
-    verifyAddedRawMeasure(1113, DEVELOPMENT_COST_KEY, Long.toString(ncloc1113 * DEV_COST_LANGUAGE_1));
-    verifyAddedRawMeasure(1121, DEVELOPMENT_COST_KEY, Long.toString(nclocValue1121 * DEV_COST_LANGUAGE_2));
-    verifyAddedRawMeasure(1211, DEVELOPMENT_COST_KEY, Long.toString(ncloc1211 * DEV_COST_LANGUAGE_1));
+    verifyAddedRawMeasure(1112, DEVELOPMENT_COST_KEY, Long.toString(ncloc1112 * DEV_COST));
+    verifyAddedRawMeasure(1113, DEVELOPMENT_COST_KEY, Long.toString(ncloc1113 * DEV_COST));
+    verifyAddedRawMeasure(1121, DEVELOPMENT_COST_KEY, Long.toString(nclocValue1121 * DEV_COST));
+    verifyAddedRawMeasure(1211, DEVELOPMENT_COST_KEY, Long.toString(ncloc1211 * DEV_COST));
 
     // directory has no children => no file => 0 everywhere and A rating
     verifyAddedRawMeasure(122, DEVELOPMENT_COST_KEY, "0");
 
     // directory has children => dev cost is aggregated
     verifyAddedRawMeasure(111, DEVELOPMENT_COST_KEY, Long.toString(
-      ncloc1112 * DEV_COST_LANGUAGE_2 +
-        ncloc1113 * DEV_COST_LANGUAGE_1));
-    verifyAddedRawMeasure(112, DEVELOPMENT_COST_KEY, Long.toString(nclocValue1121 * DEV_COST_LANGUAGE_2));
-    verifyAddedRawMeasure(121, DEVELOPMENT_COST_KEY, Long.toString(ncloc1211 * DEV_COST_LANGUAGE_1));
+      ncloc1112 * DEV_COST +
+        ncloc1113 * DEV_COST));
+    verifyAddedRawMeasure(112, DEVELOPMENT_COST_KEY, Long.toString(nclocValue1121 * DEV_COST));
+    verifyAddedRawMeasure(121, DEVELOPMENT_COST_KEY, Long.toString(ncloc1211 * DEV_COST));
 
     verifyAddedRawMeasure(1, DEVELOPMENT_COST_KEY, Long.toString(
-      ncloc1112 * DEV_COST_LANGUAGE_2 +
-        ncloc1113 * DEV_COST_LANGUAGE_1 +
-        nclocValue1121 * DEV_COST_LANGUAGE_2 +
-        ncloc1211 * DEV_COST_LANGUAGE_1));
+      ncloc1112 * DEV_COST +
+        ncloc1113 * DEV_COST +
+        nclocValue1121 * DEV_COST +
+        ncloc1211 * DEV_COST));
   }
 
   @Test
@@ -211,10 +209,10 @@ public class MaintainabilityMeasuresVisitorTest {
 
     underTest.visit(ROOT_PROJECT);
 
-    verifyAddedRawMeasure(FILE_1_REF, SQALE_DEBT_RATIO_KEY, file1MaintainabilityCost * 1d / (file1Ncloc * DEV_COST_LANGUAGE_1) * 100);
-    verifyAddedRawMeasure(FILE_2_REF, SQALE_DEBT_RATIO_KEY, file2MaintainabilityCost * 1d / (file2Ncloc * DEV_COST_LANGUAGE_1) * 100);
-    verifyAddedRawMeasure(DIRECTORY_REF, SQALE_DEBT_RATIO_KEY, directoryMaintainabilityCost * 1d / ((file1Ncloc + file2Ncloc) * DEV_COST_LANGUAGE_1) * 100);
-    verifyAddedRawMeasure(PROJECT_REF, SQALE_DEBT_RATIO_KEY, projectMaintainabilityCost * 1d / ((file1Ncloc + file2Ncloc) * DEV_COST_LANGUAGE_1) * 100);
+    verifyAddedRawMeasure(FILE_1_REF, SQALE_DEBT_RATIO_KEY, file1MaintainabilityCost * 1d / (file1Ncloc * DEV_COST) * 100);
+    verifyAddedRawMeasure(FILE_2_REF, SQALE_DEBT_RATIO_KEY, file2MaintainabilityCost * 1d / (file2Ncloc * DEV_COST) * 100);
+    verifyAddedRawMeasure(DIRECTORY_REF, SQALE_DEBT_RATIO_KEY, directoryMaintainabilityCost * 1d / ((file1Ncloc + file2Ncloc) * DEV_COST) * 100);
+    verifyAddedRawMeasure(PROJECT_REF, SQALE_DEBT_RATIO_KEY, projectMaintainabilityCost * 1d / ((file1Ncloc + file2Ncloc) * DEV_COST) * 100);
   }
 
   @Test
@@ -261,13 +259,13 @@ public class MaintainabilityMeasuresVisitorTest {
     underTest.visit(ROOT_PROJECT);
 
     verifyAddedRawMeasure(FILE_1_REF, EFFORT_TO_REACH_MAINTAINABILITY_RATING_A_KEY,
-      (long) (file1Effort - RATING_GRID[0] * file1Ncloc * DEV_COST_LANGUAGE_1));
+      (long) (file1Effort - RATING_GRID[0] * file1Ncloc * DEV_COST));
     verifyAddedRawMeasure(FILE_2_REF, EFFORT_TO_REACH_MAINTAINABILITY_RATING_A_KEY,
-      (long) (file2Effort - RATING_GRID[0] * file2Ncloc * DEV_COST_LANGUAGE_1));
+      (long) (file2Effort - RATING_GRID[0] * file2Ncloc * DEV_COST));
     verifyAddedRawMeasure(DIRECTORY_REF, EFFORT_TO_REACH_MAINTAINABILITY_RATING_A_KEY,
-      (long) (dirEffort - RATING_GRID[0] * (file1Ncloc + file2Ncloc) * DEV_COST_LANGUAGE_1));
+      (long) (dirEffort - RATING_GRID[0] * (file1Ncloc + file2Ncloc) * DEV_COST));
     verifyAddedRawMeasure(PROJECT_REF, EFFORT_TO_REACH_MAINTAINABILITY_RATING_A_KEY,
-      (long) (projectEffort - RATING_GRID[0] * (file1Ncloc + file2Ncloc) * DEV_COST_LANGUAGE_1));
+      (long) (projectEffort - RATING_GRID[0] * (file1Ncloc + file2Ncloc) * DEV_COST));
   }
 
   @Test
diff --git a/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitorTest.java b/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitorTest.java
index 3263d76b02d..f29905756dd 100644
--- a/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitorTest.java
+++ b/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/NewMaintainabilityMeasuresVisitorTest.java
@@ -64,12 +64,12 @@ import static org.sonar.ce.task.projectanalysis.measure.MeasureAssert.assertThat
 import static org.sonar.server.measure.Rating.A;
 import static org.sonar.server.measure.Rating.D;
 
-public class  NewMaintainabilityMeasuresVisitorTest {
+public class NewMaintainabilityMeasuresVisitorTest {
 
-  private static final double[] RATING_GRID = new double[] {0.1, 0.2, 0.5, 1};
+  private static final double[] RATING_GRID = new double[]{0.1, 0.2, 0.5, 1};
 
   private static final String LANGUAGE_1_KEY = "language 1 key";
-  private static final long LANGUAGE_1_DEV_COST = 30L;
+  private static final long DEV_COST = 30L;
   private static final int ROOT_REF = 1;
   private static final int LANGUAGE_1_FILE_REF = 11111;
   private static final Offset<Double> VALUE_COMPARISON_OFFSET = Offset.offset(0.01);
@@ -94,6 +94,7 @@ public class  NewMaintainabilityMeasuresVisitorTest {
   @Before
   public void setUp() {
     when(ratingSettings.getDebtRatingGrid()).thenReturn(new DebtRatingGrid(RATING_GRID));
+    when(ratingSettings.getDevCost()).thenReturn(DEV_COST);
     underTest = new VisitorsCrawler(Arrays.asList(new NewMaintainabilityMeasuresVisitor(metricRepository, measureRepository, newLinesRepository, ratingSettings)));
   }
 
@@ -122,7 +123,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
   @Test
   public void file_has_no_new_debt_ratio_variation_if_new_lines_not_available() {
     when(newLinesRepository.newLinesAvailable()).thenReturn(false);
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.NO_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(50));
 
@@ -152,7 +152,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
   @Test
   public void file_has_new_debt_ratio_if_some_lines_are_new() {
     when(newLinesRepository.newLinesAvailable()).thenReturn(true);
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(50));
 
@@ -164,7 +163,7 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_changes_with_language_cost() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST * 10);
+    when(ratingSettings.getDevCost()).thenReturn(DEV_COST * 10);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(50));
 
@@ -176,7 +175,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_changes_with_new_technical_debt() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(500, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(500));
 
@@ -188,7 +186,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_on_non_file_level_is_based_on_new_technical_debt_of_that_level() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(500, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(1200));
 
@@ -200,7 +197,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_when_file_is_unit_test() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(500, Flag.UT_FILE, Flag.WITH_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(1200));
 
@@ -213,7 +209,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
   @Test
   public void new_debt_ratio_is_0_when_file_has_no_new_lines() {
     when(newLinesRepository.newLinesAvailable()).thenReturn(true);
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.NO_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(50));
 
@@ -226,7 +221,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
   @Test
   public void new_debt_ratio_is_0_on_non_file_level_when_no_file_has_new_lines() {
     when(newLinesRepository.newLinesAvailable()).thenReturn(true);
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.WITH_NCLOC, Flag.NO_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(200));
 
@@ -238,7 +232,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_is_0_when_there_is_no_ncloc_in_file() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.NO_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(50));
 
@@ -250,7 +243,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_is_0_on_non_file_level_when_one_file_has_zero_new_debt_because_of_no_changeset() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.NO_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(200));
 
@@ -262,7 +254,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void new_debt_ratio_is_0_when_ncloc_measure_is_missing() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     setupOneFileAloneInAProject(50, Flag.SRC_FILE, Flag.MISSING_MEASURE_NCLOC, Flag.WITH_NEW_LINES);
     measureRepository.addRawMeasure(ROOT_REF, NEW_TECHNICAL_DEBT_KEY, createNewDebtMeasure(50));
 
@@ -274,7 +265,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void leaf_components_always_have_a_measure_when_at_least_one_period_exist_and_ratio_is_computed_from_current_level_new_debt() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     Component file = builder(FILE, LANGUAGE_1_FILE_REF).setFileAttributes(new FileAttributes(false, LANGUAGE_1_KEY, 1)).build();
     treeRootHolder.setRoot(
       builder(PROJECT, ROOT_REF)
@@ -301,7 +291,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
   @Test
   public void compute_new_maintainability_rating() {
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     ReportComponent file = builder(FILE, LANGUAGE_1_FILE_REF).setFileAttributes(new FileAttributes(false, LANGUAGE_1_KEY, 1)).build();
     treeRootHolder.setRoot(
       builder(PROJECT, ROOT_REF)
@@ -332,7 +321,6 @@ public class  NewMaintainabilityMeasuresVisitorTest {
   public void compute_new_development_cost() {
     ReportComponent file1 = builder(FILE, LANGUAGE_1_FILE_REF).setFileAttributes(new FileAttributes(false, LANGUAGE_1_KEY, 4)).build();
     ReportComponent file2 = builder(FILE, 22_222).setFileAttributes(new FileAttributes(false, LANGUAGE_1_KEY, 6)).build();
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     treeRootHolder.setRoot(
       builder(PROJECT, ROOT_REF)
         .addChildren(
@@ -353,15 +341,14 @@ public class  NewMaintainabilityMeasuresVisitorTest {
 
     underTest.visit(treeRootHolder.getRoot());
 
-    assertNewDevelopmentCostValues(ROOT_REF, 5 * LANGUAGE_1_DEV_COST);
-    assertNewDevelopmentCostValues(LANGUAGE_1_FILE_REF, 2 * LANGUAGE_1_DEV_COST);
-    assertNewDevelopmentCostValues(22_222, 3 * LANGUAGE_1_DEV_COST);
+    assertNewDevelopmentCostValues(ROOT_REF, 5 * DEV_COST);
+    assertNewDevelopmentCostValues(LANGUAGE_1_FILE_REF, 2 * DEV_COST);
+    assertNewDevelopmentCostValues(22_222, 3 * DEV_COST);
   }
 
   @Test
   public void compute_new_maintainability_rating_to_A_when_no_debt() {
     when(newLinesRepository.newLinesAvailable()).thenReturn(true);
-    when(ratingSettings.getDevCost(LANGUAGE_1_KEY)).thenReturn(LANGUAGE_1_DEV_COST);
     treeRootHolder.setRoot(
       builder(PROJECT, ROOT_REF)
         .addChildren(
diff --git a/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettingsTest.java b/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettingsTest.java
index 09eab15e415..64ebb8819c3 100644
--- a/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettingsTest.java
+++ b/server/sonar-ce-task-projectanalysis/src/test/java/org/sonar/ce/task/projectanalysis/qualitymodel/RatingSettingsTest.java
@@ -23,23 +23,17 @@ import org.junit.Test;
 import org.sonar.api.CoreProperties;
 import org.sonar.api.config.PropertyDefinitions;
 import org.sonar.api.config.internal.MapSettings;
-import org.sonar.api.measures.CoreMetrics;
-import org.sonar.api.utils.MessageException;
 import org.sonar.api.utils.System2;
 import org.sonar.core.config.CorePropertyDefinitions;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.sonar.api.CoreProperties.DEVELOPMENT_COST;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY;
 
 public class RatingSettingsTest {
 
   private MapSettings settings = new MapSettings(new PropertyDefinitions(System2.INSTANCE, CorePropertyDefinitions.all()));
 
-
   @Test
   public void load_rating_grid() {
     settings.setProperty(CoreProperties.RATING_GRID, "1,3.4,8,50");
@@ -54,31 +48,11 @@ public class RatingSettingsTest {
   }
 
   @Test
-  public void load_work_units_for_language() {
+  public void load_dev_cost() {
     settings.setProperty(DEVELOPMENT_COST, "50");
     RatingSettings configurationLoader = new RatingSettings(settings.asConfig());
 
-    assertThat(configurationLoader.getDevCost("defaultLanguage")).isEqualTo(50L);
-  }
-
-  @Test
-  public void load_overridden_values_for_language() {
-
-    String aLanguage = "aLanguage";
-    String anotherLanguage = "anotherLanguage";
-
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS, "0,1");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY, aLanguage);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY, "30");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_SIZE_METRIC_KEY, CoreMetrics.NCLOC_KEY);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "1" + "." + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY, anotherLanguage);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "1" + "." + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY, "40");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "1" + "." + CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_SIZE_METRIC_KEY, CoreMetrics.COMPLEXITY_KEY);
-
-    RatingSettings configurationLoader = new RatingSettings(settings.asConfig());
-
-    assertThat(configurationLoader.getDevCost(aLanguage)).isEqualTo(30L);
-    assertThat(configurationLoader.getDevCost(anotherLanguage)).isEqualTo(40L);
+    assertThat(configurationLoader.getDevCost()).isEqualTo(50L);
   }
 
   @Test
@@ -91,29 +65,4 @@ public class RatingSettingsTest {
 
   }
 
-  @Test
-  public void use_generic_value_when_specific_setting_is_missing() {
-    String aLanguage = "aLanguage";
-
-    settings.setProperty(DEVELOPMENT_COST, "30");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS, "0");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY, aLanguage);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY, "40");
-
-    RatingSettings configurationLoader = new RatingSettings(settings.asConfig());
-
-    assertThat(configurationLoader.getDevCost(aLanguage)).isEqualTo(40L);
-  }
-
-  @Test
-  public void constructor_fails_with_ME_if_language_specific_parameter_language_is_missing() {
-    settings.setProperty(DEVELOPMENT_COST, "30");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS, "0");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY, "40");
-
-    assertThatThrownBy(() -> new RatingSettings(settings.asConfig()))
-      .isInstanceOf(MessageException.class)
-      .hasMessage("Technical debt configuration is corrupted. At least one language specific parameter has no Language key. " +
-        "Contact your administrator to update this configuration in the global administration section of SonarQube.");
-  }
 }
diff --git a/server/sonar-db-migration/src/it/java/org/sonar/server/platform/db/migration/version/v105/DeleteLanguageSpecificParametersPropertySetIT.java b/server/sonar-db-migration/src/it/java/org/sonar/server/platform/db/migration/version/v105/DeleteLanguageSpecificParametersPropertySetIT.java
new file mode 100644
index 00000000000..cecd7a0f133
--- /dev/null
+++ b/server/sonar-db-migration/src/it/java/org/sonar/server/platform/db/migration/version/v105/DeleteLanguageSpecificParametersPropertySetIT.java
@@ -0,0 +1,86 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2024 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.server.platform.db.migration.version.v105;
+
+import java.sql.SQLException;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+import org.sonar.db.MigrationDbTester;
+import org.sonar.server.platform.db.migration.step.DataChange;
+
+class DeleteLanguageSpecificParametersPropertySetIT {
+
+  @RegisterExtension
+  public final MigrationDbTester db = MigrationDbTester.createForMigrationStep(DeleteLanguageSpecificParametersPropertySet.class);
+  private final DataChange underTest = new DeleteLanguageSpecificParametersPropertySet(db.database());
+
+  @Test
+  void migration_should_remove_root_property_and_children() throws SQLException {
+    insertLanguageSpecificParametersPropertySet(db);
+
+    underTest.execute();
+
+    Assertions.assertThat(db.select("select * from properties")).isEmpty();
+  }
+
+  @Test
+  void migration_is_reentrant() throws SQLException {
+    insertLanguageSpecificParametersPropertySet(db);
+
+    underTest.execute();
+    underTest.execute();
+
+    Assertions.assertThat(db.select("select * from properties")).isEmpty();
+  }
+
+  private void insertLanguageSpecificParametersPropertySet(MigrationDbTester db) {
+    db.executeInsert("properties ",
+      "prop_key", "languageSpecificParameters",
+      "is_empty", false,
+      "text_value", "0,1",
+      "created_at", 100_000L,
+      "uuid", "some-random-uuid1");
+    db.executeInsert("properties ",
+      "prop_key", "languageSpecificParameters.0.language",
+      "is_empty", false,
+      "text_value", "java",
+      "created_at", 100_000L,
+      "uuid", "some-random-uuid2");
+    db.executeInsert("properties ",
+      "prop_key", "languageSpecificParameters.0.man_days",
+      "is_empty", false,
+      "text_value", "10",
+      "created_at", 100_000L,
+      "uuid", "some-random-uuid3");
+    db.executeInsert("properties ",
+      "prop_key", "languageSpecificParameters.1.language",
+      "is_empty", false,
+      "text_value", "php",
+      "created_at", 100_000L,
+      "uuid", "some-random-uuid4");
+    db.executeInsert("properties ",
+      "prop_key", "languageSpecificParameters.1.man_days",
+      "is_empty", false,
+      "text_value", "20",
+      "created_at", 100_000L,
+      "uuid", "some-random-uuid5");
+  }
+}
diff --git a/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DbVersion105.java b/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DbVersion105.java
index 71ab5344d87..ea73f3bb228 100644
--- a/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DbVersion105.java
+++ b/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DbVersion105.java
@@ -46,6 +46,7 @@ public class DbVersion105 implements DbVersion {
       .add(10_5_002, "Drop column 'uuid' from 'issues_impacts' table", DropUuidColumnInIssuesImpactsTable.class)
       .add(10_5_003, "Drop column 'uuid' from 'rules_default_impacts' table", DropUuidColumnInRulesDefaultImpactsTable.class)
       .add(10_5_004, "Create primary key on 'issues_impacts' table", CreatePrimaryKeyOnIssuesImpactsTable.class)
-      .add(10_5_005, "Create primary key on 'rules_default_impacts' table", CreatePrimaryKeyOnRulesDefaultImpactsTable.class);
+      .add(10_5_005, "Create primary key on 'rules_default_impacts' table", CreatePrimaryKeyOnRulesDefaultImpactsTable.class)
+      .add(10_5_006, "Delete 'languageSpecificParameters' property set from 'properties' table", DeleteLanguageSpecificParametersPropertySet.class);
   }
 }
diff --git a/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DeleteLanguageSpecificParametersPropertySet.java b/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DeleteLanguageSpecificParametersPropertySet.java
new file mode 100644
index 00000000000..ae7f384d695
--- /dev/null
+++ b/server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v105/DeleteLanguageSpecificParametersPropertySet.java
@@ -0,0 +1,39 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2024 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.server.platform.db.migration.version.v105;
+
+import java.sql.SQLException;
+import org.sonar.db.Database;
+import org.sonar.server.platform.db.migration.step.DataChange;
+
+public class DeleteLanguageSpecificParametersPropertySet extends DataChange {
+
+  public DeleteLanguageSpecificParametersPropertySet(Database db) {
+    super(db);
+  }
+
+  @Override
+  protected void execute(Context context) throws SQLException {
+    context.prepareUpsert("delete from properties where prop_key like ?")
+      .setString(1, "languageSpecificParameters%")
+      .execute()
+      .commit();
+  }
+}
diff --git a/server/sonar-web/src/main/js/helpers/mocks/definitions-list.ts b/server/sonar-web/src/main/js/helpers/mocks/definitions-list.ts
index a775e188b79..604dc021a22 100644
--- a/server/sonar-web/src/main/js/helpers/mocks/definitions-list.ts
+++ b/server/sonar-web/src/main/js/helpers/mocks/definitions-list.ts
@@ -2322,32 +2322,6 @@ export const definitions: ExtendedSettingDefinition[] = [
     deprecatedKey: 'workUnitsBySizePoint',
   },
   {
-    key: 'languageSpecificParameters',
-    name: 'Language specific parameters',
-    description:
-      'DEPRECATED - The parameters specified here for a given language will override the general parameters defined in this section.',
-    type: SettingType.PROPERTY_SET,
-    category: 'technicalDebt',
-    subCategory: 'technicalDebt',
-    options: [],
-    fields: [
-      {
-        key: 'language',
-        name: 'Language Key',
-        description: 'Ex: java, cs, cpp...',
-        options: [],
-      },
-      {
-        key: 'man_days',
-        name: 'Development cost',
-        description: 'If left blank, the generic value defined in this section will be used.',
-        type: SettingType.FLOAT,
-        options: [],
-      },
-    ],
-    deprecatedKey: 'languageSpecificParameters',
-  },
-  {
     key: 'sonar.technicalDebt.ratingGrid',
     name: 'Maintainability rating grid',
     description:
diff --git a/server/sonar-webserver-core/src/main/java/org/sonar/server/platform/db/CheckLanguageSpecificParamsAtStartup.java b/server/sonar-webserver-core/src/main/java/org/sonar/server/platform/db/CheckLanguageSpecificParamsAtStartup.java
deleted file mode 100644
index e194f96afc5..00000000000
--- a/server/sonar-webserver-core/src/main/java/org/sonar/server/platform/db/CheckLanguageSpecificParamsAtStartup.java
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * SonarQube
- * Copyright (C) 2009-2024 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-package org.sonar.server.platform.db;
-
-import org.sonar.api.Startable;
-import org.sonar.api.config.Configuration;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS;
-
-/**
- * Checks if there are any language specific parameters set for calculating technical debt as functionality is deprecated from 9.9.
- * If found, it is logged as a warning. This requires to be defined in platform level 4 ({@link org.sonar.server.platform.platformlevel.PlatformLevel4}).
- */
-public class CheckLanguageSpecificParamsAtStartup implements Startable {
-
-  private static final Logger LOG = LoggerFactory.getLogger(CheckLanguageSpecificParamsAtStartup.class);
-
-  private final Configuration config;
-
-  public CheckLanguageSpecificParamsAtStartup(Configuration config) {
-    this.config = config;
-  }
-
-  @Override
-  public void start() {
-    String[] languageSpecificParams = config.getStringArray(LANGUAGE_SPECIFIC_PARAMETERS);
-    if (languageSpecificParams.length > 0) {
-      LOG.warn("The development cost used for calculating the technical debt is currently configured with {} language specific parameters [Key: languageSpecificParameters]. " +
-        "Please be aware that this functionality is deprecated, and will be removed in a future version.", languageSpecificParams.length);
-    }
-  }
-
-  @Override
-  public void stop() {
-    // do nothing
-  }
-
-}
diff --git a/server/sonar-webserver-core/src/test/java/org/sonar/server/platform/db/CheckLanguageSpecificParamsAtStartupTest.java b/server/sonar-webserver-core/src/test/java/org/sonar/server/platform/db/CheckLanguageSpecificParamsAtStartupTest.java
deleted file mode 100644
index 5221655fe29..00000000000
--- a/server/sonar-webserver-core/src/test/java/org/sonar/server/platform/db/CheckLanguageSpecificParamsAtStartupTest.java
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * SonarQube
- * Copyright (C) 2009-2024 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-package org.sonar.server.platform.db;
-
-import org.junit.After;
-import org.junit.ClassRule;
-import org.junit.Rule;
-import org.junit.Test;
-import org.slf4j.event.Level;
-import org.sonar.api.CoreProperties;
-import org.sonar.api.config.internal.MapSettings;
-import org.sonar.api.measures.CoreMetrics;
-import org.sonar.api.testfixtures.log.LogTester;
-import org.sonar.api.utils.System2;
-import org.sonar.api.utils.log.LoggerLevel;
-import org.sonar.db.DbTester;
-
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY;
-import static org.sonar.api.CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY;
-
-public class CheckLanguageSpecificParamsAtStartupTest {
-
-  @ClassRule
-  public static LogTester logTester = new LogTester().setLevel(LoggerLevel.WARN);
-  @Rule
-  public final DbTester dbTester = DbTester.create(System2.INSTANCE);
-  private final MapSettings settings = new MapSettings();
-  private final CheckLanguageSpecificParamsAtStartup underTest = new CheckLanguageSpecificParamsAtStartup(settings.asConfig());
-
-  @After
-  public void tearDown() {
-    logTester.clear();
-    underTest.stop();
-  }
-
-  @Test
-  public void log_shows_when_language_specific_params_used() {
-    String aLanguage = "aLanguage";
-    String anotherLanguage = "anotherLanguage";
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS, "0,1");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY, aLanguage);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY, "30");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "0" + "." + CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_SIZE_METRIC_KEY, CoreMetrics.NCLOC_KEY);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "1" + "." + LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY, anotherLanguage);
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "1" + "." + LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY, "40");
-    settings.setProperty(LANGUAGE_SPECIFIC_PARAMETERS + "." + "1" + "." + CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_SIZE_METRIC_KEY, CoreMetrics.COMPLEXITY_KEY);
-
-    underTest.start();
-    assertThat(logTester.logs(Level.WARN))
-      .contains("The development cost used for calculating the technical debt is currently configured with 2 language specific parameters [Key: languageSpecificParameters]. " +
-      "Please be aware that this functionality is deprecated, and will be removed in a future version.");
-  }
-
-  @Test
-  public void log_does_not_show_when_language_specific_params_used() {
-    underTest.start();
-    boolean noneMatch = logTester.logs(Level.WARN).stream()
-      .noneMatch(s -> s.startsWith("The development cost used for calculating the technical debt is currently configured with"));
-    assertThat(noneMatch).isTrue();
-  }
-
-}
diff --git a/server/sonar-webserver/src/main/java/org/sonar/server/platform/platformlevel/PlatformLevel4.java b/server/sonar-webserver/src/main/java/org/sonar/server/platform/platformlevel/PlatformLevel4.java
index bd96d1c36d2..651c3922a9b 100644
--- a/server/sonar-webserver/src/main/java/org/sonar/server/platform/platformlevel/PlatformLevel4.java
+++ b/server/sonar-webserver/src/main/java/org/sonar/server/platform/platformlevel/PlatformLevel4.java
@@ -179,7 +179,6 @@ import org.sonar.server.platform.PersistentSettings;
 import org.sonar.server.platform.SystemInfoWriterModule;
 import org.sonar.server.platform.WebCoreExtensionsInstaller;
 import org.sonar.server.platform.db.CheckAnyonePermissionsAtStartup;
-import org.sonar.server.platform.db.CheckLanguageSpecificParamsAtStartup;
 import org.sonar.server.platform.web.ActionDeprecationLoggerInterceptor;
 import org.sonar.server.platform.web.SonarLintConnectionFilter;
 import org.sonar.server.platform.web.WebServiceFilter;
@@ -435,7 +434,6 @@ public class PlatformLevel4 extends PlatformLevel {
       UserPermissionChanger.class,
       GroupPermissionChanger.class,
       CheckAnyonePermissionsAtStartup.class,
-      CheckLanguageSpecificParamsAtStartup.class,
       VisibilityService.class,
 
       // components
diff --git a/sonar-core/src/main/java/org/sonar/core/config/DebtProperties.java b/sonar-core/src/main/java/org/sonar/core/config/DebtProperties.java
index 46a88fe6d9e..26295713c48 100644
--- a/sonar-core/src/main/java/org/sonar/core/config/DebtProperties.java
+++ b/sonar-core/src/main/java/org/sonar/core/config/DebtProperties.java
@@ -34,7 +34,7 @@ class DebtProperties {
   static List<PropertyDefinition> all() {
     return List.of(
       PropertyDefinition.builder(CoreProperties.DEVELOPMENT_COST)
-        .defaultValue("" + CoreProperties.DEVELOPMENT_COST_DEF_VALUE)
+        .defaultValue(CoreProperties.DEVELOPMENT_COST_DEF_VALUE)
         .name("Development cost")
         .description("Cost to develop one line of code (LOC). Example: if the cost to develop 1 LOC has been estimated " +
           "at 30 minutes, then the value of this property would be 30.")
@@ -43,7 +43,7 @@ class DebtProperties {
         .build(),
 
       PropertyDefinition.builder(CoreProperties.RATING_GRID)
-        .defaultValue("" + CoreProperties.RATING_GRID_DEF_VALUES)
+        .defaultValue(CoreProperties.RATING_GRID_DEF_VALUES)
         .name("Maintainability rating grid")
         .description("Maintainability ratings range from A (very good) to E (very bad). The rating is determined by the value of " +
           "the Technical Debt Ratio, which compares the technical debt on a project to the cost it would take to rewrite " +
@@ -52,24 +52,6 @@ class DebtProperties {
           "2,500 LOC will have a technical debt ratio of 24000/(30 * 2,500) = 0.32. That yields a maintainability rating of D.")
         .category(CoreProperties.CATEGORY_TECHNICAL_DEBT)
         .deprecatedKey("ratingGrid")
-        .build(),
-
-      PropertyDefinition.builder(CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS)
-        .name("Language specific parameters")
-        .description("DEPRECATED - The parameters specified here for a given language will override the general parameters defined in this section.")
-        .category(CoreProperties.CATEGORY_TECHNICAL_DEBT)
-        .deprecatedKey("languageSpecificParameters")
-        .fields(
-          PropertyFieldDefinition.build(CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_LANGUAGE_KEY)
-            .name("Language Key")
-            .description("Ex: java, cs, cpp...")
-            .type(PropertyType.STRING)
-            .build(),
-          PropertyFieldDefinition.build(CoreProperties.LANGUAGE_SPECIFIC_PARAMETERS_MAN_DAYS_KEY)
-            .name("Development cost")
-            .description("If left blank, the generic value defined in this section will be used.")
-            .type(PropertyType.FLOAT)
-            .build())
         .build());
   }
 }
diff --git a/sonar-ws/src/testFixtures/java/org/sonarqube/ws/tester/QModelTester.java b/sonar-ws/src/testFixtures/java/org/sonarqube/ws/tester/QModelTester.java
index 28ba04ad3d0..c29639cd5a8 100644
--- a/sonar-ws/src/testFixtures/java/org/sonarqube/ws/tester/QModelTester.java
+++ b/sonar-ws/src/testFixtures/java/org/sonarqube/ws/tester/QModelTester.java
@@ -26,9 +26,6 @@ public class QModelTester {
 
   private static final String DEV_COST_PROPERTY = "sonar.technicalDebt.developmentCost";
   private static final String RATING_GRID_PROPERTY = "sonar.technicalDebt.ratingGrid";
-  private static final String DEV_COST_LANGUAGE_PROPERTY = "languageSpecificParameters";
-  private static final String DEV_COST_LANGUAGE_NAME_PROPERTY = DEV_COST_LANGUAGE_PROPERTY + ".0.language";
-  private static final String DEV_COST_LANGUAGE_COST_PROPERTY = DEV_COST_LANGUAGE_PROPERTY + ".0.man_days";
   private static final Joiner COMMA_JOINER = Joiner.on(",");
 
   private final TesterSession session;
@@ -41,18 +38,12 @@ public class QModelTester {
     session.settings().setGlobalSettings(DEV_COST_PROPERTY, Integer.toString(developmentCost));
   }
 
-  public void updateLanguageDevelopmentCost(String language, int developmentCost) {
-    session.settings().setGlobalSettings(DEV_COST_LANGUAGE_PROPERTY, "0");
-    session.settings().setGlobalSettings(DEV_COST_LANGUAGE_NAME_PROPERTY, language);
-    session.settings().setGlobalSettings(DEV_COST_LANGUAGE_COST_PROPERTY, Integer.toString(developmentCost));
-  }
-
   public void updateRatingGrid(Double... ratingGrid) {
     Preconditions.checkState(ratingGrid.length == 4, "Rating grid must contains 4 values");
     session.settings().setGlobalSettings(RATING_GRID_PROPERTY, COMMA_JOINER.join(ratingGrid));
   }
 
   public void reset() {
-    session.settings().resetSettings(DEV_COST_LANGUAGE_PROPERTY, DEV_COST_LANGUAGE_NAME_PROPERTY, DEV_COST_LANGUAGE_COST_PROPERTY, RATING_GRID_PROPERTY, DEV_COST_PROPERTY);
+    session.settings().resetSettings(RATING_GRID_PROPERTY, DEV_COST_PROPERTY);
   }
 }