method extracted

java/compiler/impl/src/com/intellij/compiler/impl/StateCache.java

@@ -15,7 +15,6 @@
  */
 package com.intellij.compiler.impl;
 
-import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.util.io.DataExternalizer;
 import com.intellij.util.io.EnumeratorStringDescriptor;
 import com.intellij.util.io.PersistentHashMap;
@@ -55,12 +54,7 @@ public abstract class StateCache<T> {
     }
     catch (IOException ignored) {
     }
-    final String baseName = myBaseFile.getName();
-    for (File file : myBaseFile.getParentFile().listFiles()) {
-      if (file.getName().startsWith(baseName)) {
-        FileUtil.delete(file);
-      }
-    }
+    myMap.deleteFiles();
     try {
       myMap = createMap(myBaseFile);
     }

platform/util/src/com/intellij/util/io/PersistentHashMap.java

@@ -143,22 +143,29 @@ public class PersistentHashMap<Key, Value> extends PersistentEnumerator<Key>{
 
   private static File checkDataFiles(final File file) {
     if (!file.exists()) {
-      final File dataFile = getDataFile(file);
-      final String baseName = dataFile.getName();
-      final File[] files = dataFile.getParentFile().listFiles(new FileFilter() {
-        public boolean accept(final File pathname) {
-          return pathname.getName().startsWith(baseName);
-        }
-      });
-      if (files != null) {
-        for (File f : files) {
-          FileUtil.delete(f);
-        }
-      }
+      deleteFiles(file);
     }
     return file;
   }
 
+  public void deleteFiles() {
+    deleteFiles(myFile);
+  }
+
+  private static void deleteFiles(File baseFile) {
+    final String baseName = baseFile.getName();
+    final File[] files = baseFile.getParentFile().listFiles(new FileFilter() {
+      public boolean accept(final File pathname) {
+        return pathname.getName().startsWith(baseName);
+      }
+    });
+    if (files != null) {
+      for (File f : files) {
+        FileUtil.delete(f);
+      }
+    }
+  }
+
   private static File getDataFile(final File file) {
     return new File(file.getParentFile(), file.getName() + DATA_FILE_EXTENSION);
   }