8239243: Create index structures only if required

Reviewed-by: hannesw, jjg

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AbstractIndexWriter.java

@@ -70,7 +70,7 @@
     /**
      * The index of all the members with unicode character.
      */
-    protected IndexBuilder indexbuilder;
+    protected IndexBuilder indexBuilder;
 
     protected Navigation navBar;
 
@@ -80,13 +80,13 @@
      *
      * @param configuration  The current configuration
      * @param path       Path to the file which is getting generated.
-     * @param indexbuilder Unicode based Index from {@link IndexBuilder}
+     * @param indexBuilder Unicode based Index from {@link IndexBuilder}
      */
     protected AbstractIndexWriter(HtmlConfiguration configuration,
                                   DocPath path,
-                                  IndexBuilder indexbuilder) {
+                                  IndexBuilder indexBuilder) {
         super(configuration, path);
-        this.indexbuilder = indexbuilder;
+        this.indexBuilder = indexBuilder;
         this.navBar = new Navigation(null, configuration, PageMode.INDEX, path);
     }
 

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AllClassesIndexWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -54,20 +54,20 @@
     /**
      * Index of all the classes.
      */
-    protected IndexBuilder indexbuilder;
+    protected IndexBuilder indexBuilder;
 
     /**
-     * Construct AllClassesIndexWriter object. Also initializes the indexbuilder variable in this
+     * Construct AllClassesIndexWriter object. Also initializes the indexBuilder variable in this
      * class.
      *
      * @param configuration The current configuration
      * @param filename Path to the file which is getting generated.
-     * @param indexbuilder Unicode based Index from {@link IndexBuilder}
+     * @param indexBuilder Unicode based Index from {@link IndexBuilder}
      */
     public AllClassesIndexWriter(HtmlConfiguration configuration,
-            DocPath filename, IndexBuilder indexbuilder) {
+            DocPath filename, IndexBuilder indexBuilder) {
         super(configuration, filename);
-        this.indexbuilder = indexbuilder;
+        this.indexBuilder = indexBuilder;
     }
 
     /**
@@ -134,8 +134,8 @@ protected void addContents(Content content) {
                 .addTab(resources.errorSummary, e -> utils.isError((TypeElement)e))
                 .addTab(resources.annotationTypeSummary, utils::isAnnotationType)
                 .setTabScript(i -> "show(" + i + ");");
-        for (Character unicode : indexbuilder.index()) {
-            for (Element element : indexbuilder.getMemberList(unicode)) {
+        for (Character unicode : indexBuilder.keys()) {
+            for (Element element : indexBuilder.getMemberList(unicode)) {
                 TypeElement typeElement = (TypeElement) element;
                 if (!utils.isCoreClass(typeElement)) {
                     continue;

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/HtmlDoclet.java

@@ -150,7 +150,6 @@ protected void generateOtherFiles(DocletEnvironment docEnv, ClassTree classtree)
         if (options.classUse()) {
             ClassUseWriter.generate(configuration, classtree);
         }
-        IndexBuilder indexbuilder = new IndexBuilder(configuration, nodeprecated);
 
         if (options.createTree()) {
             TreeWriter.generate(configuration, classtree);
@@ -169,11 +168,12 @@ protected void generateOtherFiles(DocletEnvironment docEnv, ClassTree classtree)
         }
 
         if (options.createIndex()) {
+            IndexBuilder indexBuilder = new IndexBuilder(configuration, nodeprecated);
             configuration.buildSearchTagIndex();
             if (options.splitIndex()) {
-                SplitIndexWriter.generate(configuration, indexbuilder);
+                SplitIndexWriter.generate(configuration, indexBuilder);
             } else {
-                SingleIndexWriter.generate(configuration, indexbuilder);
+                SingleIndexWriter.generate(configuration, indexBuilder);
             }
             AllClassesIndexWriter.generate(configuration,
                     new IndexBuilder(configuration, nodeprecated, true));

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SingleIndexWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -64,26 +64,26 @@
      *
      * @param configuration the configuration for this doclet
      * @param filename     Name of the index file to be generated.
-     * @param indexbuilder Unicode based Index from {@link IndexBuilder}
+     * @param indexBuilder Unicode based Index from {@link IndexBuilder}
      */
     public SingleIndexWriter(HtmlConfiguration configuration,
                              DocPath filename,
-                             IndexBuilder indexbuilder) {
-        super(configuration, filename, indexbuilder);
+                             IndexBuilder indexBuilder) {
+        super(configuration, filename, indexBuilder);
     }
 
     /**
      * Generate single index file, for all Unicode characters.
      *
      * @param configuration the configuration for this doclet
-     * @param indexbuilder IndexBuilder built by {@link IndexBuilder}
+     * @param indexBuilder IndexBuilder built by {@link IndexBuilder}
      * @throws DocFileIOException if there is a problem generating the index
      */
     public static void generate(HtmlConfiguration configuration,
-                                IndexBuilder indexbuilder) throws DocFileIOException {
+                                IndexBuilder indexBuilder) throws DocFileIOException {
         DocPath filename = DocPaths.INDEX_ALL;
         SingleIndexWriter indexgen = new SingleIndexWriter(configuration,
-                                         filename, indexbuilder);
+                                         filename, indexBuilder);
         indexgen.generateIndexFile();
     }
 
@@ -101,17 +101,17 @@ protected void generateIndexFile() throws DocFileIOException {
         headerContent.add(navBar.getContent(true));
         HtmlTree divTree = new HtmlTree(HtmlTag.DIV);
         divTree.setStyle(HtmlStyle.contentContainer);
-        elements = new TreeSet<>(indexbuilder.getIndexMap().keySet());
+        elements = new TreeSet<>(indexBuilder.asMap().keySet());
         elements.addAll(configuration.tagSearchIndexKeys);
         addLinksForIndexes(divTree);
         for (Character unicode : elements) {
             if (configuration.tagSearchIndexMap.get(unicode) == null) {
-                addContents(unicode, indexbuilder.getMemberList(unicode), divTree);
-            } else if (indexbuilder.getMemberList(unicode) == null) {
+                addContents(unicode, indexBuilder.getMemberList(unicode), divTree);
+            } else if (indexBuilder.getMemberList(unicode) == null) {
                 addSearchContents(unicode, configuration.tagSearchIndexMap.get(unicode), divTree);
             } else {
-                addContents(unicode, indexbuilder.getMemberList(unicode),
-                        configuration.tagSearchIndexMap.get(unicode), divTree);
+                addContents(unicode, indexBuilder.getMemberList(unicode),
+                            configuration.tagSearchIndexMap.get(unicode), divTree);
             }
         }
         addLinksForIndexes(divTree);

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SplitIndexWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -68,14 +68,14 @@
      *
      * @param configuration the configuration for this doclet
      * @param path       Path to the file which is getting generated.
-     * @param indexbuilder Unicode based Index from {@link IndexBuilder}
+     * @param indexBuilder Unicode based Index from {@link IndexBuilder}
      * @param elements the collection of characters for which to generate index files
      */
     public SplitIndexWriter(HtmlConfiguration configuration,
                             DocPath path,
-                            IndexBuilder indexbuilder,
+                            IndexBuilder indexBuilder,
                             Collection<Character> elements) {
-        super(configuration, path, indexbuilder);
+        super(configuration, path, indexBuilder);
         this.indexElements = new ArrayList<>(elements);
     }
 
@@ -84,13 +84,13 @@ public SplitIndexWriter(HtmlConfiguration configuration,
      * the members starting with the particular unicode character.
      *
      * @param configuration the configuration for this doclet
-     * @param indexbuilder IndexBuilder built by {@link IndexBuilder}
+     * @param indexBuilder IndexBuilder built by {@link IndexBuilder}
      * @throws DocFileIOException if there is a problem generating the index files
      */
     public static void generate(HtmlConfiguration configuration,
-                                IndexBuilder indexbuilder) throws DocFileIOException {
+                                IndexBuilder indexBuilder) throws DocFileIOException {
         DocPath path = DocPaths.INDEX_FILES;
-        Set<Character> keys = new TreeSet<>(indexbuilder.getIndexMap().keySet());
+        Set<Character> keys = new TreeSet<>(indexBuilder.asMap().keySet());
         keys.addAll(configuration.tagSearchIndexKeys);
         ListIterator<Character> li = new ArrayList<>(keys).listIterator();
         int prev;
@@ -102,7 +102,7 @@ public static void generate(HtmlConfiguration configuration,
             DocPath filename = DocPaths.indexN(li.nextIndex());
             SplitIndexWriter indexgen = new SplitIndexWriter(configuration,
                     path.resolve(filename),
-                    indexbuilder, keys);
+                    indexBuilder, keys);
             indexgen.generateIndexFile((Character) ch);
             if (!li.hasNext()) {
                 indexgen.createSearchIndexFiles();
@@ -134,11 +134,11 @@ protected void generateIndexFile(Character unicode) throws DocFileIOException {
         divTree.setStyle(HtmlStyle.contentContainer);
         addLinksForIndexes(divTree);
         if (configuration.tagSearchIndexMap.get(unicode) == null) {
-            addContents(unicode, indexbuilder.getMemberList(unicode), divTree);
-        } else if (indexbuilder.getMemberList(unicode) == null) {
+            addContents(unicode, indexBuilder.getMemberList(unicode), divTree);
+        } else if (indexBuilder.getMemberList(unicode) == null) {
             addSearchContents(unicode, configuration.tagSearchIndexMap.get(unicode), divTree);
         } else {
-            addContents(unicode, indexbuilder.getMemberList(unicode),
+            addContents(unicode, indexBuilder.getMemberList(unicode),
                     configuration.tagSearchIndexMap.get(unicode), divTree);
         }
         addLinksForIndexes(divTree);