commit 3312341b176f031d8da3b3ecf29574d107da4bd8 Author: Walter Oggioni Date: Wed Apr 7 21:40:57 2021 +0200 initial commit diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..00a51af --- /dev/null +++ b/.gitattributes @@ -0,0 +1,6 @@ +# +# https://help.github.com/articles/dealing-with-line-endings/ +# +# These are explicitly windows files and should use crlf +*.bat text eol=crlf + diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..1b6985c --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +# Ignore Gradle project-specific cache directory +.gradle + +# Ignore Gradle build output directory +build diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..97186e5 --- /dev/null +++ b/build.gradle @@ -0,0 +1,38 @@ +plugins { + id 'java-library' +} + +group = "net.woggioni" + +repositories { + mavenLocal() + mavenCentral() + jcenter() +} + +dependencies { + compileOnly group: "org.projectlombok", name: "lombok", version: lombokVersion + annotationProcessor group: "org.projectlombok", name: "lombok", version: lombokVersion + + implementation group: 'net.woggioni', name: 'jwo', version: jwoVersion + + testCompileOnly group: "org.projectlombok", name: "lombok", version: lombokVersion + testAnnotationProcessor group: "org.projectlombok", name: "lombok", version: lombokVersion + testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: junitJupiterVersion + testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: junitJupiterVersion +} + +java { + modularity.inferModulePath = true + sourceCompatibility = JavaVersion.VERSION_1_8 + targetCompatibility = JavaVersion.VERSION_1_8 +} + +compileTestJava { + options.compilerArgs << '-parameters' +} + +test { + useJUnitPlatform() +} + diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..9b01c77 --- /dev/null +++ b/gradle.properties @@ -0,0 +1,4 @@ +jwoVersion=1.0 +junitJupiterVersion=5.7.0 +lombokVersion=1.18.16 +slf4jVersion=1.7.30 \ No newline at end of file diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..e708b1c Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..28ff446 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.1-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100755 index 0000000..4f906e0 --- /dev/null +++ b/gradlew @@ -0,0 +1,185 @@ +#!/usr/bin/env sh + +# +# Copyright 2015 the original author or authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +## +## Gradle start up script for UN*X +## +############################################################################## + +# Attempt to set APP_HOME +# Resolve links: $0 may be a link +PRG="$0" +# Need this for relative symlinks. +while [ -h "$PRG" ] ; do + ls=`ls -ld "$PRG"` + link=`expr "$ls" : '.*-> \(.*\)$'` + if expr "$link" : '/.*' > /dev/null; then + PRG="$link" + else + PRG=`dirname "$PRG"`"/$link" + fi +done +SAVED="`pwd`" +cd "`dirname \"$PRG\"`/" >/dev/null +APP_HOME="`pwd -P`" +cd "$SAVED" >/dev/null + +APP_NAME="Gradle" +APP_BASE_NAME=`basename "$0"` + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD="maximum" + +warn () { + echo "$*" +} + +die () { + echo + echo "$*" + echo + exit 1 +} + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "`uname`" in + CYGWIN* ) + cygwin=true + ;; + Darwin* ) + darwin=true + ;; + MINGW* ) + msys=true + ;; + NONSTOP* ) + nonstop=true + ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + else + JAVACMD="$JAVA_HOME/bin/java" + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD="java" + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then + MAX_FD_LIMIT=`ulimit -H -n` + if [ $? -eq 0 ] ; then + if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then + MAX_FD="$MAX_FD_LIMIT" + fi + ulimit -n $MAX_FD + if [ $? -ne 0 ] ; then + warn "Could not set maximum file descriptor limit: $MAX_FD" + fi + else + warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" + fi +fi + +# For Darwin, add options to specify how the application appears in the dock +if $darwin; then + GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" +fi + +# For Cygwin or MSYS, switch paths to Windows format before running java +if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then + APP_HOME=`cygpath --path --mixed "$APP_HOME"` + CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` + + JAVACMD=`cygpath --unix "$JAVACMD"` + + # We build the pattern for arguments to be converted via cygpath + ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` + SEP="" + for dir in $ROOTDIRSRAW ; do + ROOTDIRS="$ROOTDIRS$SEP$dir" + SEP="|" + done + OURCYGPATTERN="(^($ROOTDIRS))" + # Add a user-defined pattern to the cygpath arguments + if [ "$GRADLE_CYGPATTERN" != "" ] ; then + OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" + fi + # Now convert the arguments - kludge to limit ourselves to /bin/sh + i=0 + for arg in "$@" ; do + CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` + CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option + + if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition + eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` + else + eval `echo args$i`="\"$arg\"" + fi + i=`expr $i + 1` + done + case $i in + 0) set -- ;; + 1) set -- "$args0" ;; + 2) set -- "$args0" "$args1" ;; + 3) set -- "$args0" "$args1" "$args2" ;; + 4) set -- "$args0" "$args1" "$args2" "$args3" ;; + 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; + 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; + 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; + 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; + 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; + esac +fi + +# Escape application args +save () { + for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done + echo " " +} +APP_ARGS=`save "$@"` + +# Collect all arguments for the java command, following the shell quoting and substitution rules +eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..3da4e94 --- /dev/null +++ b/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'wdi' diff --git a/src/main/java/net/woggioni/wdi/api/Bean.java b/src/main/java/net/woggioni/wdi/api/Bean.java new file mode 100644 index 0000000..2757033 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/Bean.java @@ -0,0 +1,18 @@ +package net.woggioni.wdi.api; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; + + +@Target({ElementType.METHOD, ElementType.PARAMETER}) +@Retention(RetentionPolicy.RUNTIME) +public @interface Bean { + enum Scope { + Singleton, Prototype + } + + String name() default ""; + Scope scope() default Scope.Singleton; +} diff --git a/src/main/java/net/woggioni/wdi/api/BeanClasses.java b/src/main/java/net/woggioni/wdi/api/BeanClasses.java new file mode 100644 index 0000000..a8050cc --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/BeanClasses.java @@ -0,0 +1,13 @@ +package net.woggioni.wdi.api; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; + + +@Target({ElementType.TYPE}) +@Retention(RetentionPolicy.RUNTIME) +public @interface BeanClasses { + Class[] value() default {}; +} diff --git a/src/main/java/net/woggioni/wdi/api/BeanConfigurationException.java b/src/main/java/net/woggioni/wdi/api/BeanConfigurationException.java new file mode 100644 index 0000000..4a9c735 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/BeanConfigurationException.java @@ -0,0 +1,11 @@ +package net.woggioni.wdi.api; + +public class BeanConfigurationException extends RuntimeException { + public BeanConfigurationException(String msg) { + super(msg); + } + + public BeanConfigurationException(String msg, Throwable cause) { + super(msg, cause); + } +} diff --git a/src/main/java/net/woggioni/wdi/api/BeanContainer.java b/src/main/java/net/woggioni/wdi/api/BeanContainer.java new file mode 100644 index 0000000..dc5478c --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/BeanContainer.java @@ -0,0 +1,244 @@ +package net.woggioni.wdi.api; + +import lombok.AccessLevel; +import lombok.RequiredArgsConstructor; +import lombok.SneakyThrows; +import net.woggioni.jwo.CollectionUtils; +import net.woggioni.jwo.JWO; +import net.woggioni.jwo.tuple.Tuple2; + +import java.lang.annotation.Annotation; +import java.lang.reflect.*; +import java.util.*; +import java.util.function.BiConsumer; + +@RequiredArgsConstructor(access = AccessLevel.PRIVATE) +public class BeanContainer { + + private final Map singletonCache; + private final NavigableMap bom; + + @RequiredArgsConstructor + private static class ConstructorList { + final Iterable> allBeans; + final Iterable> beanFactories; + } + + @SneakyThrows + public static BeanContainer with(Class beanFactoryClass) { + try { + return with(beanFactoryClass.getConstructor().newInstance()); + } catch (NoSuchMethodException | IllegalAccessException ex) { + throw JWO.newThrowable(BeanConfigurationException.class, + "Bean factory class '%s' is required to have a public zero arguments constructor", beanFactoryClass.getName()); + } + } + + public static BeanContainer with(BeanFactory root) { + Map singletonCache = new HashMap<>(); + NavigableMap bom = new TreeMap<>(BeanSpec.specComparator); + List stack = new ArrayList<>(); + stack.add(root); + while(!stack.isEmpty()) { + ConstructorList constructorList = computeBom(JWO.pop(stack)); + for(Map.Entry entry : constructorList.allBeans) { + bom.putIfAbsent(entry.getKey(), entry.getValue()); + } + for(Class beanFactoryClass : constructorList.beanFactories) { + BeanFactory beanFactory = getBean(singletonCache, bom, beanFactoryClass, null, BeanSpec.emptyQualifier); + stack.add(beanFactory); + } + } + return new BeanContainer(singletonCache, Collections.unmodifiableNavigableMap(bom)); + } + + @SneakyThrows + private static ConstructorList computeBom(BeanFactory beanFactory) { + Class beanFactoryClass = beanFactory.getClass(); + List> allBeans = new ArrayList<>(); + List> beanFactories = new ArrayList<>(); + BiConsumer add2ResultList = (BeanSpec beanSpec, Executable executable) -> { + Map.Entry entry = new AbstractMap.SimpleEntry<>(beanSpec, executable); + allBeans.add(entry); + Class cls = beanSpec.getCls(); + if(BeanFactory.class.isAssignableFrom(cls) && cls != beanFactoryClass) { + beanFactories.add((Class) beanSpec.getCls()); + } + Iterator> it = new ParentIterator(cls); + while(it.hasNext()) { + Class superClass = it.next(); + entry = new AbstractMap.SimpleEntry<>( + new BeanSpec(superClass, beanSpec.getName(), beanSpec.getQualifiers()), executable); + allBeans.add(entry); + } + }; + for(Method method : beanFactoryClass.getMethods()) { + Bean bean = method.getAnnotation(Bean.class); + if(bean != null) { + String name = bean.name(); + if(name.isEmpty()) name = JWO.decapitalize(method.getName()); + add2ResultList.accept(new BeanSpec(method.getReturnType(), name, extractQualifiers(method)), method); + } + } + + List> classes = new ArrayList<>(); + classes.add(beanFactoryClass); + for(Class cls : beanFactory.getClasses()) classes.add(cls); + BeanClasses beanClasses = beanFactoryClass.getAnnotation(BeanClasses.class); + if(beanClasses != null) { + for(Class cls : beanClasses.value()) classes.add(cls); + } + + Import imports = beanFactoryClass.getAnnotation(Import.class); + if(imports != null) { + for(Class cls : imports.value()) classes.add(cls); + } + + for(Class cls : classes) { + Constructor[] constructors = cls.getConstructors(); + if(constructors.length == 1) { + BeanSpec spec = new BeanSpec( + cls, + JWO.decapitalize(cls.getSimpleName()), + extractQualifiers(constructors[0]) + ); + add2ResultList.accept(spec, constructors[0]); + } else { + List> annotatedConstructors = new ArrayList<>(); + for(Constructor constructor : constructors) { + if(constructor.getAnnotation(Bean.class) != null) + annotatedConstructors.add(constructor); + } + + if(annotatedConstructors.isEmpty()) { + throw JWO.newThrowable(BeanConfigurationException.class, "Class '%s' has multiple constructors," + + " but none of them is annotated with %s", cls.getName(), Bean.class.getName()); + } else { + for(Constructor annotatedConstructor : annotatedConstructors) { + String name = annotatedConstructor.getAnnotation(Bean.class).name(); + if(name.isEmpty()) name = JWO.decapitalize(annotatedConstructor.getName()); + BeanSpec spec = new BeanSpec(cls, name, extractQualifiers(annotatedConstructor)); + add2ResultList.accept(spec, annotatedConstructor); + } + } + } + } + return new ConstructorList(allBeans, beanFactories); + } + + private static NavigableSet extractQualifiers(AnnotatedElement annotatedElement) { + NavigableSet result = new TreeSet<>(BeanSpec.annotationComparator); + for(Annotation methodAnnotation : annotatedElement.getAnnotations()) { + for(Annotation annotationAnnotation : methodAnnotation.annotationType().getAnnotations()) { + if(annotationAnnotation instanceof Qualifier) { + result.add(methodAnnotation); + break; + } + } + } + return Collections.unmodifiableNavigableSet(result); + } + + private static Tuple2 analyzeInjectionPoint(Parameter parameter) { + String name; + boolean strictName; + { + String beanName = Optional.ofNullable(parameter.getAnnotation(Bean.class)).map(Bean::name).orElse(""); + if(!beanName.isEmpty()) { + name = beanName; + strictName = true; + } else { + if(parameter.isNamePresent()) { + name = parameter.getName(); + } else { + name = ""; + } + strictName = false; + } + } + return new Tuple2<>(new BeanSpec(parameter.getType(), name, extractQualifiers(parameter)), strictName); + } + + @SneakyThrows + private static Object getBean( + Map singletonCache, + NavigableMap bom, + BeanSpec spec, boolean strictName) { + List> candidatesFactoryMethods = new ArrayList<>(); + if(bom.containsKey(spec)) candidatesFactoryMethods.add(bom.floorEntry(spec)); + else { + BeanSpec head = new BeanSpec(spec.getCls(), "", BeanSpec.emptyQualifier); + for (Map.Entry entry : bom.tailMap(head, true).entrySet()) { + BeanSpec key = entry.getKey(); + if (key.getCls() == spec.getCls()) { + key.getQualifiers().containsAll(spec.getQualifiers()); + if ((!strictName || Objects.equals(key.getName(), spec.getName())) && + key.getQualifiers().containsAll(spec.getQualifiers())) { + candidatesFactoryMethods.add(entry); + } + } else break; + } + } + Executable executable; + if(candidatesFactoryMethods.isEmpty()) + throw JWO.newThrowable(BeanConfigurationException.class, "No bean found for %s", spec); + else if(candidatesFactoryMethods.size() > 1) { + if(!strictName) { + executable = candidatesFactoryMethods.get(0).getValue(); + for(Map.Entry entry : candidatesFactoryMethods) { + if(Objects.equals(entry.getKey().getName(), spec.getName())) { + executable = entry.getValue(); + break; + } + } + } else throw JWO.newThrowable(BeanConfigurationException.class, "Multiple candidates found matching %s", spec); + } else { + executable = candidatesFactoryMethods.get(0).getValue(); + } + + Object result = singletonCache.get(executable); + if(result == null) { + List executableParameters = new ArrayList<>(); + for(Parameter parameter : executable.getParameters()) { + Tuple2 tuple = analyzeInjectionPoint(parameter); + executableParameters.add(getBean(singletonCache, bom, tuple._1, tuple._2)); + } + if(executable instanceof Constructor) { + result = ((Constructor) executable).newInstance(executableParameters.toArray()); + } else if(executable instanceof Method) { + if(Modifier.isStatic(executable.getModifiers())) { + result = ((Method) executable).invoke(null, executableParameters.toArray()); + } else { + Object instance = getBean(singletonCache, bom, + new BeanSpec( + executable.getDeclaringClass(), + "", + BeanSpec.emptyQualifier), false); + result = ((Method) executable).invoke(instance, executableParameters.toArray()); + } + } + else throw new IllegalStateException(); + singletonCache.put(executable, result); + } + return result; + } + + private static T getBean(Map singletonCache, + NavigableMap bom, + Class cls, + String name, + NavigableSet qualifiers) { + return (T) getBean(singletonCache, bom, new BeanSpec(cls, name == null ? "" : name, qualifiers), name != null); + } + + public T getBean(Class cls, String name, Annotation ...qualifiers) { + return (T) getBean(singletonCache, bom, + new BeanSpec(cls, name == null ? "" : name, + Arrays.stream(qualifiers).collect(CollectionUtils.toUnmodifiableTreeSet(BeanSpec.annotationComparator))), + name != null); + } + + public T getBean(Class cls) { + return getBean(cls, null); + } +} diff --git a/src/main/java/net/woggioni/wdi/api/BeanFactory.java b/src/main/java/net/woggioni/wdi/api/BeanFactory.java new file mode 100644 index 0000000..7f9eaaa --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/BeanFactory.java @@ -0,0 +1,9 @@ +package net.woggioni.wdi.api; + +import java.util.Collections; + +public interface BeanFactory { + default Iterable> getClasses() { + return Collections.emptyList(); + } +} diff --git a/src/main/java/net/woggioni/wdi/api/BeanSpec.java b/src/main/java/net/woggioni/wdi/api/BeanSpec.java new file mode 100644 index 0000000..161dac1 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/BeanSpec.java @@ -0,0 +1,52 @@ +package net.woggioni.wdi.api; + +import lombok.Getter; +import lombok.RequiredArgsConstructor; +import net.woggioni.jwo.collection.LexicographicIterableComparator; + +import java.lang.annotation.Annotation; +import java.util.Collections; +import java.util.Comparator; +import java.util.NavigableSet; +import java.util.Objects; +import java.util.stream.Collectors; + +@RequiredArgsConstructor +class BeanSpec { + + @Getter + private final Class cls; + + @Getter + private final String name; + + @Getter + private final NavigableSet qualifiers; + + @Override + public String toString() { + return String.format("{class: %s, name: '%s', qualifiers: [%s]}", + cls.getName(), name, + qualifiers.stream() + .map(Annotation::getClass) + .map(Class::getName) + .collect(Collectors.joining(", "))); + } + + public static Comparator annotationComparator = + Comparator.comparing(it -> it.getClass().getName()) + .thenComparing(Annotation::hashCode) + .thenComparing((ann1, ann2) -> { + if(Objects.equals(ann1, ann2)) return 0; + else { + return Integer.compare(System.identityHashCode(ann1), System.identityHashCode(ann2)); + } + }); + + public static Comparator> classComparator = Comparator.comparing(Class::getName); + public static Comparator specComparator = Comparator.comparing(BeanSpec::getCls, classComparator) + .thenComparing(BeanSpec::getQualifiers, + new LexicographicIterableComparator<>(annotationComparator)) + .thenComparing(BeanSpec::getName); + public static NavigableSet emptyQualifier = Collections.emptyNavigableSet(); +} diff --git a/src/main/java/net/woggioni/wdi/api/Import.java b/src/main/java/net/woggioni/wdi/api/Import.java new file mode 100644 index 0000000..6bdf443 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/Import.java @@ -0,0 +1,13 @@ +package net.woggioni.wdi.api; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; + + +@Target({ElementType.TYPE}) +@Retention(RetentionPolicy.RUNTIME) +public @interface Import { + Class[] value() default {}; +} diff --git a/src/main/java/net/woggioni/wdi/api/ParentIterator.java b/src/main/java/net/woggioni/wdi/api/ParentIterator.java new file mode 100644 index 0000000..2f0ef82 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/ParentIterator.java @@ -0,0 +1,62 @@ +package net.woggioni.wdi.api; + +import net.woggioni.jwo.JWO; + +import java.util.*; + +class ParentIterator implements Iterator> { + + static Class[] superClasses(Class cls) { + Class[] interfaces = cls.getInterfaces(); + Class[] result; + int i = 0; + Class superclass = cls.getSuperclass(); + if(superclass != null) { + result = new Class[interfaces.length + 1]; + result[i++] = superclass; + } else { + result = new Class[interfaces.length ]; + } + System.arraycopy(interfaces, 0, result, i, interfaces.length); + return result; + } + + private final List>> stack; + private final Set> resultCache; + private Class nextValue; + + ParentIterator(Class cls) { + stack = new ArrayList<>(); + stack.add(JWO.iterator(superClasses(cls))); + resultCache = new HashSet<>(); + nextValue = computeNext(); + } + + private Class computeNext() { + while(!stack.isEmpty()) { + Iterator> last = JWO.tail(stack); + if (last.hasNext()) { + Class next = last.next(); + if(resultCache.add(next)) { + stack.add(JWO.iterator(superClasses(next))); + return next; + } + } else { + JWO.pop(stack); + } + } + return null; + } + + @Override + public boolean hasNext() { + return nextValue != null; + } + + @Override + public Class next() { + Class result = nextValue; + nextValue = computeNext(); + return result; + } +} diff --git a/src/main/java/net/woggioni/wdi/api/Qualifier.java b/src/main/java/net/woggioni/wdi/api/Qualifier.java new file mode 100644 index 0000000..5f3bc44 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/Qualifier.java @@ -0,0 +1,12 @@ +package net.woggioni.wdi.api; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; + +@Target({ElementType.ANNOTATION_TYPE}) +@Retention(RetentionPolicy.RUNTIME) +public @interface Qualifier { +} + diff --git a/src/main/java/net/woggioni/wdi/api/Startup.java b/src/main/java/net/woggioni/wdi/api/Startup.java new file mode 100644 index 0000000..597a243 --- /dev/null +++ b/src/main/java/net/woggioni/wdi/api/Startup.java @@ -0,0 +1,11 @@ +package net.woggioni.wdi.api; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; + +@Target({ElementType.METHOD}) +@Retention(RetentionPolicy.RUNTIME) +public @interface Startup { +} diff --git a/src/test/java/net/woggioni/wdi/api/BeanContainerTest.java b/src/test/java/net/woggioni/wdi/api/BeanContainerTest.java new file mode 100644 index 0000000..98a6b75 --- /dev/null +++ b/src/test/java/net/woggioni/wdi/api/BeanContainerTest.java @@ -0,0 +1,330 @@ +package net.woggioni.wdi.api; + +import lombok.RequiredArgsConstructor; +import lombok.SneakyThrows; +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; +import java.util.Arrays; +import java.util.List; + +public class BeanContainerTest { + + public static class Test1 { + @RequiredArgsConstructor + public static class Foo { + public final String s; + } + + public static class Configuration implements BeanFactory { + + @Override + public List> getClasses() { + return Arrays.asList(Foo.class); + } + + @Bean + public String bar() { + return "bar"; + } + } + + @Test + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + Foo foo = container.getBean(Foo.class); + System.out.println(foo.s); + } + } + + public static class Test2 { + + public static class Foo {} + + @RequiredArgsConstructor + public static class Bar { + public final Foo foo; + } + + public static class Configuration implements BeanFactory { + + @Override + public List> getClasses() { + return Arrays.asList(Foo.class); + } + + @Bean + public Bar bar(Foo foo) { + return new Bar(foo); + } + } + + @Test + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + Foo foo = container.getBean(Foo.class); + Bar bar = container.getBean(Bar.class); + Assertions.assertSame(foo, bar.foo); + } + } + + public static class Test3 { + + public static class Foo {} + + @RequiredArgsConstructor + public static class Bar { + public final Foo foo; + } + + @BeanClasses(Foo.class) + public static class Configuration implements BeanFactory { + + @Bean + public Bar bar(Foo foo) { + return new Bar(foo); + } + } + + @Test + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + Foo foo = container.getBean(Foo.class); + Bar bar = container.getBean(Bar.class); + Assertions.assertSame(foo, bar.foo); + } + } + + public static class Test4 { + + public static class Foo {} + + @RequiredArgsConstructor + public static class Bar { + public final Foo foo; + } + + @Import(AnotherConfiguration.class) + public static class Configuration implements BeanFactory { + + @Bean + public Bar bar(Foo foo) { + return new Bar(foo); + } + } + + @BeanClasses(Foo.class) + public static class AnotherConfiguration implements BeanFactory { } + + @Test + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + Foo foo = container.getBean(Foo.class); + Bar bar = container.getBean(Bar.class); + Assertions.assertSame(foo, bar.foo); + } + } + + public static class Test5 { + + @RequiredArgsConstructor + public static class Person { + final String name; + final String surname; + final int age; + } + + @RequiredArgsConstructor + public static class People { + final Person bob; + final Person john; + } + + public static class People2 { + public People2(@Bean(name = "bob") Person p1, @Bean(name = "john") Person p2) { + this.bob = p1; + this.john = p2; + } + + final Person bob; + final Person john; + } + + public static class People3 { + public People3(Person bob, Person john) { + this.bob = bob; + this.john = john; + } + + final Person bob; + final Person john; + } + + + @BeanClasses({People.class, People2.class, People3.class}) + public static class Configuration implements BeanFactory { + + @Bean + public Person bob() { + return new Person("Bob", "Kennedy", 42); + } + + @Bean + public Person john() { + return new Person("John", "Kennedy", 46); + } + } + + @Test + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + Person bob = container.getBean(Person.class, "bob"); + Person john = container.getBean(Person.class, "john"); + Assertions.assertEquals("Bob", bob.name); + Assertions.assertEquals("John", john.name); + + People people = container.getBean(People.class); + Assertions.assertSame(people.bob, bob); + Assertions.assertSame(people.john, john); + + People2 people2 = container.getBean(People2.class); + Assertions.assertSame(people2.bob, bob); + Assertions.assertSame(people2.john, john); + + People3 people3 = container.getBean(People3.class); + Assertions.assertSame(people3.bob, bob); + Assertions.assertSame(people3.john, john); + } + } + + public static class Test6 { + + @Qualifier + @Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD}) + @Retention(RetentionPolicy.RUNTIME) + public @interface Bob {} + + @Qualifier + @Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD}) + @Retention(RetentionPolicy.RUNTIME) + public @interface John {} + + @RequiredArgsConstructor + public static class Person { + final String name; + final String surname; + final int age; + } + + public static class People { + public People(@Bob Person p1, @John Person p2) { + this.bob = p1; + this.john = p2; + } + + final Person bob; + final Person john; + } + + @BeanClasses(People.class) + public static class Configuration implements BeanFactory { + + @Bean + @Bob + public Person bob() { + return new Person("Bob", "Kennedy", 42); + } + + @John + @Bean + public Person john() { + return new Person("John", "Kennedy", 46); + } + } + + @Test + @Bob + @John + @SneakyThrows + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + + Bob b = Configuration.class.getMethod("bob").getAnnotation(Bob.class); + Person bob = container.getBean(Person.class, null, b); + John j = Configuration.class.getMethod("john").getAnnotation(John.class); + Person john = container.getBean(Person.class, null, j); + Assertions.assertEquals("Bob", bob.name); + Assertions.assertEquals("John", john.name); + + People people = container.getBean(People.class); + Assertions.assertSame(people.bob, bob); + Assertions.assertSame(people.john, john); + } + } + + public static class Test7 { + + @Qualifier + @Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD}) + @Retention(RetentionPolicy.RUNTIME) + public @interface Named { + String name() default ""; + } + + @RequiredArgsConstructor + public static class Person { + final String name; + final String surname; + final int age; + } + + public static class People { + public People(@Named(name = "bob") Person p1, @Named(name = "john") Person p2) { + this.bob = p1; + this.john = p2; + } + + final Person bob; + final Person john; + } + + @BeanClasses({People.class}) + public static class Configuration implements BeanFactory { + + @Bean + @Named(name = "bob") + public Person bob() { + return new Person("Bob", "Kennedy", 42); + } + + @Bean + @Named(name = "john") + public Person john() { + return new Person("John", "Kennedy", 46); + } + } + + + @Test + @SneakyThrows + public void test() { + BeanContainer container = BeanContainer.with(Configuration.class); + Named b = Configuration.class.getMethod("bob").getAnnotation(Named.class); + Named j = Configuration.class.getMethod("john").getAnnotation(Named.class); + + Person bob = container.getBean(Person.class, null, b); + Person john = container.getBean(Person.class, null, j); + + Assertions.assertEquals("Bob", bob.name); + Assertions.assertEquals("John", john.name); + + People people = container.getBean(People.class); + Assertions.assertSame(people.bob, bob); + Assertions.assertSame(people.john, john); + } + } +} diff --git a/src/test/java/net/woggioni/wdi/api/ParentIteratorTest.java b/src/test/java/net/woggioni/wdi/api/ParentIteratorTest.java new file mode 100644 index 0000000..4f69bb8 --- /dev/null +++ b/src/test/java/net/woggioni/wdi/api/ParentIteratorTest.java @@ -0,0 +1,30 @@ +package net.woggioni.wdi.api; + +import net.woggioni.jwo.CollectionUtils; +import net.woggioni.jwo.JWO; +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; + +import java.util.ArrayList; +import java.util.List; +import java.util.stream.Collectors; + +public class ParentIteratorTest { + + @Test + public void test() { + List> expectedClasses = CollectionUtils.immutableList( + java.util.AbstractList.class, + java.util.AbstractCollection.class, + Object.class, + java.util.Collection.class, + java.lang.Iterable.class, + java.util.List.class, + java.util.RandomAccess.class, + java.lang.Cloneable.class, + java.io.Serializable.class + ); + Assertions.assertEquals(expectedClasses, + JWO.iterator2Stream(new ParentIterator(ArrayList.class)).collect(Collectors.toList())); + } +}