SONAR-926 Preload files in DefaultModuleFileSystem

1 files changed, 12 insertions, 0 deletions

diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/batch/fs/internal/DefaultFileSystem.java b/sonar-plugin-api/src/main/java/org/sonar/api/batch/fs/internal/DefaultFileSystem.java
index e5c201e211c..ad5486a21e3 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/batch/fs/internal/DefaultFileSystem.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/batch/fs/internal/DefaultFileSystem.java
@@ -109,6 +109,7 @@ public class DefaultFileSystem implements FileSystem {
 
   @Override
   public InputFile inputFile(FilePredicate predicate) {
+    doPreloadFiles();
     if (predicate instanceof UniqueIndexPredicate) {
       return cache.inputFile((UniqueIndexPredicate) predicate);
     }
@@ -122,16 +123,19 @@ public class DefaultFileSystem implements FileSystem {
 
   @Override
   public Iterable<InputFile> inputFiles(FilePredicate predicate) {
+    doPreloadFiles();
     return Iterables.filter(cache.inputFiles(), new GuavaPredicate(predicate));
   }
 
   @Override
   public boolean hasFiles(FilePredicate predicate) {
+    doPreloadFiles();
     return Iterables.indexOf(cache.inputFiles(), new GuavaPredicate(predicate)) >= 0;
   }
 
   @Override
   public Iterable<File> files(FilePredicate predicate) {
+    doPreloadFiles();
     return Iterables.transform(inputFiles(predicate), new Function<InputFile, File>() {
       @Override
       public File apply(@Nullable InputFile input) {
@@ -149,9 +153,17 @@ public class DefaultFileSystem implements FileSystem {
 
   @Override
   public Set<String> languages() {
+    doPreloadFiles();
     return languages;
   }
 
+  /**
+   * This method is called before each search of files.
+   */
+  protected void doPreloadFiles() {
+
+  }
+
   public static abstract class Cache {
     protected abstract Iterable<InputFile> inputFiles();