logic: fix update of Java indexer to new version of Java dependencies

* reapplied previous reverts
* added cache for TypeSolvers in Java code

deployment/windows/wixSetup/installDir.wxs

@@ -673,7 +673,7 @@
 				<Directory Id='DataJava' Name='java'>
 
 					<Component Id='JavaGuavaJar' Guid='*' Win64="$(var.Win64)">
-						<File Id='JavaGuava' Name='guava-18.0.jar' DiskId='1' Source='./../../../bin/app/data/java/guava-18.0.jar' KeyPath='yes' />
+						<File Id='JavaGuava' Name='guava-21.0.jar' DiskId='1' Source='./../../../bin/app/data/java/guava-21.0.jar' KeyPath='yes' />
 					</Component>
 					<Component Id='JavaJavaIndexerJar' Guid='*' Win64="$(var.Win64)">
 						<File Id='JavaJavaIndexer' Name='java-indexer.jar' DiskId='1' Source='./../../../bin/app/data/java/java-indexer.jar' KeyPath='yes' />

java_indexer/src/com/sourcetrail/JavaIndexer.java

@@ -4,6 +4,8 @@ import java.io.File;
 import java.io.IOException;
 import java.io.StringReader;
 import java.lang.String;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Optional;
 
 import com.github.javaparser.ast.CompilationUnit;
@@ -14,6 +16,7 @@ import com.github.javaparser.Problem;
 import com.github.javaparser.Range;
 import com.github.javaparser.symbolsolver.javaparser.Navigator;
 import com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade;
+import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
 import com.github.javaparser.symbolsolver.resolution.typesolvers.CombinedTypeSolver;
 import com.github.javaparser.symbolsolver.resolution.typesolvers.JarTypeSolver;
 import com.github.javaparser.symbolsolver.resolution.typesolvers.JavaParserTypeSolver;
@@ -21,41 +24,58 @@ import com.github.javaparser.symbolsolver.resolution.typesolvers.ReflectionTypeS
 
 public class JavaIndexer 
 {
+	
+	private static Map<String, TypeSolver> typeSolvers = new HashMap<>();
+			
 	public static void processFile(int address, String filePath, String fileContent, String classPath, int verbose)
 	{
 		logInfo(address, "indexing source file: " + filePath);
 		
 		try 
 		{
-			CombinedTypeSolver typeSolver = new CombinedTypeSolver();
+			CombinedTypeSolver combinedTypeSolver = new CombinedTypeSolver();
 
-			typeSolver.add(new ReflectionTypeSolver());
+			combinedTypeSolver.add(new ReflectionTypeSolver());
 			for (String path: classPath.split("\\;"))
 			{
-				if (path.endsWith(".jar"))
+				if (typeSolvers.containsKey(path))
 				{
-					try
-					{
-						JarTypeSolver solver = new JarTypeSolver(path);
-						typeSolver.add(solver);
-					}
-					catch (IOException e)
-					{
-						System.out.println("unable to add jar file: " + path);
-					}
+					combinedTypeSolver.add(typeSolvers.get(path));
 				}
-				else if (!path.isEmpty())
+				else 
 				{
-					JavaParserTypeSolver solver = new JavaParserTypeSolver(new File(path));
-					typeSolver.add(solver);
+					TypeSolver typeSolver = null;
+					
+					if (path.endsWith(".jar"))
+					{
+						try
+						{
+							typeSolver = new JarTypeSolver(path);
+						}
+						catch (IOException e)
+						{
+							System.out.println("unable to add jar file: " + path);
+						}
+					}
+					else if (!path.isEmpty())
+					{
+						typeSolver = new JavaParserTypeSolver(new File(path));
+					}
+					
+					if (typeSolver != null)
+					{
+						typeSolvers.put(path, typeSolver);
+						combinedTypeSolver.add(typeSolver);
+					}
 				}
 			}
+			
 			CompilationUnit cu = JavaParser.parse(new StringReader(fileContent));
 
 			JavaAstVisitor astVisitor = (
 				verbose == 1 ? 
-				new JavaVerboseAstVisitor(address, filePath, new FileContent(fileContent), typeSolver) : 
-				new JavaAstVisitor(address, filePath, new FileContent(fileContent), typeSolver)
+				new JavaVerboseAstVisitor(address, filePath, new FileContent(fileContent), combinedTypeSolver) : 
+				new JavaAstVisitor(address, filePath, new FileContent(fileContent), combinedTypeSolver)
 			);
 			
 			cu.accept(astVisitor, null);
@@ -95,8 +115,6 @@ public class JavaIndexer
 				}
 			}
 		}
-		
-		JavaParserFacade.clearInstances();
 	}
 	
 	public static String getPackageName(String fileContent)
@@ -123,6 +141,13 @@ public class JavaIndexer
 		return packageName;
 	}
 	
+	public static void clearCaches()
+	{
+		typeSolvers.clear();
+		JavaParserFacade.clearInstances();
+		Runtime.getRuntime().gc();
+	}
+	
 	// helpers
 	
 	static public void recordSymbol(

src/lib/component/view/UndoRedoView.h

@@ -1,6 +1,8 @@
 #ifndef UNDO_REDO_VIEW_H
 #define UNDO_REDO_VIEW_H
 
+#include <vector>
+
 #include "component/view/View.h"
 #include <vector>
 

src/lib/data/indexer/Indexer.h

@@ -4,11 +4,10 @@
 #include <memory>
 
 #include "data/indexer/IndexerBase.h"
-#include "data/parser/ParserClientImpl.h"
-#include "utility/file/FileRegister.h"
+#include "data/indexer/IndexerCommand.h"
 #include "utility/logging/logging.h"
 
-template <typename IndexerCommandType, typename ParserType>
+template <typename IndexerCommandType>
 class Indexer
 	: public IndexerBase
 {
@@ -20,21 +19,25 @@ public:
 	virtual std::shared_ptr<IntermediateStorage> index(
 		std::shared_ptr<IndexerCommand> indexerCommand,
 		std::shared_ptr<FileRegister> fileRegister);
+
+	virtual std::shared_ptr<IntermediateStorage> doIndex(
+		std::shared_ptr<IndexerCommandType> indexerCommand,
+		std::shared_ptr<FileRegister> fileRegister) = 0;
 };
 
-template <typename IndexerCommandType, typename ParserType>
-Indexer<IndexerCommandType, ParserType>::~Indexer()
+template <typename IndexerCommandType>
+Indexer<IndexerCommandType>::~Indexer()
 {
 }
 
-template <typename IndexerCommandType, typename ParserType>
-std::string Indexer<IndexerCommandType, ParserType>::getKindString() const
+template <typename IndexerCommandType>
+std::string Indexer<IndexerCommandType>::getKindString() const
 {
 	return IndexerCommandType::getIndexerKindString();
 }
 
-template <typename IndexerCommandType, typename ParserType>
-std::shared_ptr<IntermediateStorage> Indexer<IndexerCommandType, ParserType>::index(
+template <typename IndexerCommandType>
+std::shared_ptr<IntermediateStorage> Indexer<IndexerCommandType>::index(
 	std::shared_ptr<IndexerCommand> indexerCommand, std::shared_ptr<FileRegister> fileRegister)
 {
 	std::shared_ptr<IndexerCommandType> castedCommand = std::dynamic_pointer_cast<IndexerCommandType>(indexerCommand);
@@ -46,33 +49,7 @@ std::shared_ptr<IntermediateStorage> Indexer<IndexerCommandType, ParserType>::in
 		return std::shared_ptr<IntermediateStorage>();
 	}
 
-	std::shared_ptr<ParserClientImpl> parserClient = std::make_shared<ParserClientImpl>();
-
-	std::shared_ptr<ParserType> parser = std::make_shared<ParserType>(parserClient, fileRegister);
-
-	std::shared_ptr<IntermediateStorage> storage = std::make_shared<IntermediateStorage>();
-	parserClient->setStorage(storage);
-
-	parser->buildIndex(castedCommand);
-
-	parserClient->resetStorage();
-
-	if (parserClient->hasFatalErrors() || indexerCommand->preprocessorOnly())
-	{
-		storage->setAllFilesIncomplete();
-	}
-	else
-	{
-		storage->setFilesWithErrorsIncomplete();
-		fileRegister->markIndexingFilesIndexed();
-	}
-
-	if (interrupted())
-	{
-		return std::shared_ptr<IntermediateStorage>();
-	}
-
-	return storage;
+	return doIndex(castedCommand, fileRegister);
 }
 
 #endif // INDEXER_H

src/lib/data/indexer/IndexerBase.h

@@ -2,11 +2,11 @@
 #define INDEXER_BASE_H
 
 #include <memory>
-
-#include "data/indexer/IndexerCommand.h"
-#include "data/IntermediateStorage.h"
+#include <string>
 
 class FileRegister;
+class IndexerCommand;
+class IntermediateStorage;
 
 class IndexerBase
 {

src/lib/data/indexer/IndexerComposite.cpp

@@ -1,5 +1,8 @@
 #include "data/indexer/IndexerComposite.h"
+
+#include "data/indexer/IndexerCommand.h"
 #include "utility/logging/logging.h"
+#include "data/IntermediateStorage.h"
 
 IndexerComposite::~IndexerComposite()
 {

src/lib_cxx/CMakeLists.txt

@@ -8,6 +8,7 @@ add_files(
 	data/indexer/IndexerCommandCxxCdb.h
 	data/indexer/IndexerCommandCxxManual.cpp
 	data/indexer/IndexerCommandCxxManual.h
+	data/indexer/IndexerCxx.h
 	data/indexer/IndexerFactoryModuleCxxCdb.cpp
 	data/indexer/IndexerFactoryModuleCxxCdb.h
 	data/indexer/IndexerFactoryModuleCxxManual.cpp

src/lib_cxx/data/indexer/IndexerCxx.h

@@ -0,0 +1,60 @@
+#ifndef INDEXER_CXX_H
+#define INDEXER_CXX_H
+
+#include <memory>
+
+#include "data/indexer/Indexer.h"
+#include "data/parser/ParserClientImpl.h"
+#include "utility/file/FileRegister.h"
+
+template <typename IndexerCommandType, typename ParserType>
+class IndexerCxx: public Indexer<IndexerCommandType>
+{
+public:
+	virtual ~IndexerCxx();
+
+	virtual std::shared_ptr<IntermediateStorage> doIndex(
+		std::shared_ptr<IndexerCommandType> indexerCommand,
+		std::shared_ptr<FileRegister> fileRegister);
+};
+
+template <typename IndexerCommandType, typename ParserType>
+IndexerCxx<IndexerCommandType, ParserType>::~IndexerCxx()
+{
+}
+
+template <typename IndexerCommandType, typename ParserType>
+std::shared_ptr<IntermediateStorage> IndexerCxx<IndexerCommandType, ParserType>::doIndex(
+	std::shared_ptr<IndexerCommandType> indexerCommand,
+	std::shared_ptr<FileRegister> fileRegister)
+{
+	std::shared_ptr<ParserClientImpl> parserClient = std::make_shared<ParserClientImpl>();
+
+	std::shared_ptr<ParserType> parser = std::make_shared<ParserType>(parserClient, fileRegister);
+
+	std::shared_ptr<IntermediateStorage> storage = std::make_shared<IntermediateStorage>();
+	parserClient->setStorage(storage);
+
+	parser->buildIndex(indexerCommand);
+
+	parserClient->resetStorage();
+
+	if (parserClient->hasFatalErrors() || indexerCommand->preprocessorOnly())
+	{
+		storage->setAllFilesIncomplete();
+	}
+	else
+	{
+		storage->setFilesWithErrorsIncomplete();
+		fileRegister->markIndexingFilesIndexed();
+	}
+
+	if (interrupted())
+	{
+		return std::shared_ptr<IntermediateStorage>();
+	}
+
+	return storage;
+}
+
+#endif // INDEXER_CXX_H

src/lib_cxx/data/indexer/IndexerFactoryModuleCxxCdb.cpp

@@ -1,6 +1,6 @@
 #include "data/indexer/IndexerFactoryModuleCxxCdb.h"
 
-#include "data/indexer/Indexer.h"
+#include "data/indexer/IndexerCxx.h"
 #include "data/indexer/IndexerCommandCxxCdb.h"
 #include "data/parser/cxx/CxxParser.h"
 
@@ -10,5 +10,5 @@ IndexerFactoryModuleCxxCdb::~IndexerFactoryModuleCxxCdb()
 
 std::shared_ptr<IndexerBase> IndexerFactoryModuleCxxCdb::createIndexer()
 {
-	return std::make_shared<Indexer<IndexerCommandCxxCdb, CxxParser>>();
+	return std::make_shared<IndexerCxx<IndexerCommandCxxCdb, CxxParser>>();
 }

src/lib_cxx/data/indexer/IndexerFactoryModuleCxxManual.cpp

@@ -1,6 +1,6 @@
 #include "data/indexer/IndexerFactoryModuleCxxManual.h"
 
-#include "data/indexer/Indexer.h"
+#include "data/indexer/IndexerCxx.h"
 #include "data/indexer/IndexerCommandCxxManual.h"
 #include "data/parser/cxx/CxxParser.h"
 
@@ -10,5 +10,5 @@ IndexerFactoryModuleCxxManual::~IndexerFactoryModuleCxxManual()
 
 std::shared_ptr<IndexerBase> IndexerFactoryModuleCxxManual::createIndexer()
 {
-	return std::make_shared<Indexer<IndexerCommandCxxManual, CxxParser>>();
+	return std::make_shared<IndexerCxx<IndexerCommandCxxManual, CxxParser>>();
 }

src/lib_java/CMakeLists.txt

@@ -6,6 +6,8 @@ add_files(
 	data/indexer/IndexerCommandJava.h
 	data/indexer/IndexerFactoryModuleJava.cpp
 	data/indexer/IndexerFactoryModuleJava.h
+	data/indexer/IndexerJava.cpp
+	data/indexer/IndexerJava.h
 
 	data/parser/java/JavaParser.cpp
 	data/parser/java/JavaParser.h

src/lib_java/data/indexer/IndexerFactoryModuleJava.cpp

@@ -1,8 +1,6 @@
 #include "data/indexer/IndexerFactoryModuleJava.h"
 
-#include "data/indexer/Indexer.h"
-#include "data/indexer/IndexerCommandJava.h"
-#include "data/parser/java/JavaParser.h"
+#include "data/indexer/IndexerJava.h"
 
 IndexerFactoryModuleJava::~IndexerFactoryModuleJava()
 {
@@ -10,5 +8,5 @@ IndexerFactoryModuleJava::~IndexerFactoryModuleJava()
 
 std::shared_ptr<IndexerBase> IndexerFactoryModuleJava::createIndexer()
 {
-	return std::make_shared<Indexer<IndexerCommandJava, JavaParser>>();
+	return std::make_shared<IndexerJava>();
 }

src/lib_java/data/indexer/IndexerJava.cpp

@@ -0,0 +1,44 @@
+#include "data/indexer/IndexerJava.h"
+
+#include "data/indexer/IndexerCommandJava.h"
+#include "data/parser/ParserClientImpl.h"
+#include "data/parser/java/JavaParser.h"
+#include "utility/file/FileRegister.h"
+
+IndexerJava::~IndexerJava()
+{
+	JavaParser::clearCaches();
+}
+
+std::shared_ptr<IntermediateStorage> IndexerJava::doIndex(
+	std::shared_ptr<IndexerCommandJava> indexerCommand,
+	std::shared_ptr<FileRegister> fileRegister)
+{
+	std::shared_ptr<ParserClientImpl> parserClient = std::make_shared<ParserClientImpl>();
+
+	std::shared_ptr<JavaParser> parser = std::make_shared<JavaParser>(parserClient, fileRegister);
+
+	std::shared_ptr<IntermediateStorage> storage = std::make_shared<IntermediateStorage>();
+	parserClient->setStorage(storage);
+
+	parser->buildIndex(indexerCommand);
+
+	parserClient->resetStorage();
+
+	if (parserClient->hasFatalErrors() || indexerCommand->preprocessorOnly())
+	{
+		storage->setAllFilesIncomplete();
+	}
+	else
+	{
+		storage->setFilesWithErrorsIncomplete();
+		fileRegister->markIndexingFilesIndexed();
+	}
+
+	if (interrupted())
+	{
+		return std::shared_ptr<IntermediateStorage>();
+	}
+
+	return storage;
+}

src/lib_java/data/indexer/IndexerJava.h

@@ -0,0 +1,19 @@
+#ifndef INDEXER_JAVA_H
+#define INDEXER_JAVA_H
+
+#include <memory>
+
+#include "data/indexer/IndexerCommandJava.h"
+#include "data/indexer/Indexer.h"
+
+class IndexerJava: public Indexer<IndexerCommandJava>
+{
+public:
+	virtual ~IndexerJava();
+
+	virtual std::shared_ptr<IntermediateStorage> doIndex(
+		std::shared_ptr<IndexerCommandJava> indexerCommand,
+		std::shared_ptr<FileRegister> fileRegister);
+};
+
+#endif // INDEXER_JAVA_H

src/lib_java/data/parser/java/JavaEnvironment.cpp

@@ -10,6 +10,18 @@ JavaEnvironment::~JavaEnvironment()
 	JavaEnvironmentFactory::getInstance()->unregisterEnvironment();
 }
 
+bool JavaEnvironment::callStaticVoidMethod(std::string className, std::string methodName)
+{
+	jclass javaClass = getJavaClass(className);
+	jmethodID javaMethodId = getJavaStaticMethod(javaClass, methodName, "()V");
+	if(javaMethodId != nullptr)
+	{
+		m_env->CallStaticVoidMethod(javaClass, javaMethodId);
+		return true;
+	}
+	return false;
+}
+
 bool JavaEnvironment::callStaticVoidMethod(std::string className, std::string methodName, int arg1, std::string arg2, std::string arg3, std::string arg4, int arg5)
 {
 	jclass javaClass = getJavaClass(className);

src/lib_java/data/parser/java/JavaEnvironment.h

@@ -32,6 +32,7 @@ public:
 	};
 
 	~JavaEnvironment();
+	bool callStaticVoidMethod(std::string className, std::string methodName);
 	bool callStaticVoidMethod(std::string className, std::string methodName, int arg1, std::string arg2, std::string arg3, std::string arg4, int arg5);
 	bool callStaticMethod(std::string className, std::string methodName, std::string& ret, std::string arg1);
 

src/lib_java/data/parser/java/JavaEnvironmentFactory.cpp

@@ -28,7 +28,6 @@ void JavaEnvironmentFactory::createInstance(std::string classPath, std::string&
 	}
 
 	std::function<jint (JavaVM**, void**, void*)> createInstanceFunction;
-
 	const FilePath javaPath(ApplicationSettings::getInstance()->getJavaPath());
 	createInstanceFunction = utility::loadFunctionFromLibrary<jint, JavaVM**, void**, void*>(
 		javaPath,

src/lib_java/data/parser/java/JavaParser.cpp

@@ -26,7 +26,7 @@ std::string JavaParser::prepareJavaEnvironment()
 		const std::string separator = ":";
 #endif
 		JavaEnvironmentFactory::createInstance(
-			ResourcePaths::getJavaPath().str() + "guava-18.0.jar" + separator +
+			ResourcePaths::getJavaPath().str() + "guava-21.0.jar" + separator +
 			ResourcePaths::getJavaPath().str() + "java-indexer.jar" + separator +
 			ResourcePaths::getJavaPath().str() + "javaparser-core.jar" + separator +
 			ResourcePaths::getJavaPath().str() + "javaslang-2.0.3.jar" + separator +
@@ -41,6 +41,22 @@ std::string JavaParser::prepareJavaEnvironment()
 	return errorString;
 }
 
+void JavaParser::clearCaches()
+{
+	std::shared_ptr<JavaEnvironmentFactory> factory = JavaEnvironmentFactory::getInstance();
+	if (factory)
+	{
+		std::shared_ptr<JavaEnvironment> environment = factory->createEnvironment();
+		if (environment)
+		{
+			environment->callStaticVoidMethod(
+				"com/sourcetrail/JavaIndexer",
+				"clearCaches"
+			);
+		}
+	}
+}
+
 JavaParser::JavaParser(std::shared_ptr<ParserClient> client, std::shared_ptr<FileRegister> fileRegister)
 	: Parser(client)
 	, m_id(s_nextParserId++)

src/lib_java/data/parser/java/JavaParser.h

@@ -33,6 +33,7 @@ class JavaParser: public Parser
 public:
 	// returns: error message
 	static std::string prepareJavaEnvironment();
+	static void clearCaches();
 
 	JavaParser(std::shared_ptr<ParserClient> client, std::shared_ptr<FileRegister> fileRegister);
 	~JavaParser();

src/lib_java/project/SourceGroupJava.cpp

@@ -108,6 +108,7 @@ std::vector<std::shared_ptr<IndexerCommand>> SourceGroupJava::getIndexerCommands
 bool SourceGroupJava::prepareJavaEnvironment()
 {
 	const std::string errorString = JavaParser::prepareJavaEnvironment();
+
 	if (errorString.size() > 0)
 	{
 		LOG_ERROR(errorString);

src/test/JavaParserTestSuite.h

@@ -817,7 +817,7 @@ private:
 			const std::string separator = ":";
 #endif
 			JavaEnvironmentFactory::createInstance(
-				"../app/data/java/guava-18.0.jar" + separator +
+				"../app/data/java/guava-21.0.jar" + separator +
 				"../app/data/java/java-indexer.jar" + separator +
 				"../app/data/java/javaparser-core.jar" + separator +
 				"../app/data/java/javaslang-2.0.3.jar" + separator +