152 lines
4.3 KiB
Java
152 lines
4.3 KiB
Java
/**
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*
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*/
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package org.gcube.informationsystem.utils.discovery;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Objects;
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import org.gcube.informationsystem.base.reference.ISManageable;
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import org.gcube.informationsystem.base.reference.entities.BaseEntity;
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import org.gcube.informationsystem.base.reference.properties.BaseProperty;
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import org.gcube.informationsystem.base.reference.relations.BaseRelation;
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import org.gcube.informationsystem.types.annotations.ISProperty;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* @author Luca Frosini (ISTI - CNR)
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*/
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public class ISMDiscovery<ISM extends ISManageable> {
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private static Logger logger = LoggerFactory.getLogger(ISMDiscovery.class);
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protected final Class<ISM> root;
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protected final List<Package> packages;
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protected final List<Class<ISM>> discovered;
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public List<Class<ISM>> getDiscovered() {
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return discovered;
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}
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public ISMDiscovery(Class<ISM> root) {
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this.root = root;
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this.packages = new ArrayList<>();
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addPackage(root.getPackage());
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this.discovered = new ArrayList<>();
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add(root);
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}
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public void addPackage(Package p) {
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packages.add(p);
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}
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protected void add(Class<ISM> clz) {
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discovered.add(clz);
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logger.trace("+ Added {}.", clz);
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}
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protected void analizeISM(Class<ISM> clz) {
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logger.trace("Analizyng {}", clz);
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if(!clz.isInterface()) {
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logger.trace("- Discarding {} that is not an interface", clz);
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return;
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}
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if(!root.isAssignableFrom(clz)) {
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logger.trace("- Discarding {} because is not a {}", clz, root.getSimpleName());
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return;
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}
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if(discovered.contains(clz)) {
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logger.trace("- Discarding {} because was already managed", clz);
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return;
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}
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Class<?>[] interfaces = clz.getInterfaces();
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for(Class<?> interfaceClass : interfaces) {
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@SuppressWarnings("unchecked")
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Class<ISM> parent = (Class<ISM>) interfaceClass;
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analizeISM(parent);
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}
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if(root == BaseProperty.class) {
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for(Method m : clz.getDeclaredMethods()) {
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m.setAccessible(true);
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if(m.isAnnotationPresent(ISProperty.class)) {
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if(root.isAssignableFrom(m.getReturnType())) {
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@SuppressWarnings("unchecked")
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Class<ISM> type = (Class<ISM>) m.getReturnType();
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analizeISM(type);
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}
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}
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}
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}
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add(clz);
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}
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public void discover() throws Exception {
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for(Package p : packages) {
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List<Class<?>> classes = ReflectionUtility.getClassesForPackage(p);
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for(Class<?> clz : classes) {
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@SuppressWarnings("unchecked")
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Class<ISM> ism = (Class<ISM>) clz;
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analizeISM(ism);
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}
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}
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}
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public static void manageISM(SchemaAction schemaAction, List<Package> packages) throws Exception {
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if(Objects.nonNull(packages) && packages.size() > 0) {
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manageISM(schemaAction, packages.stream().toArray(Package[]::new));
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} else {
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manageISM(schemaAction);
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}
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}
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@SuppressWarnings("unchecked")
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public static void manageISM(SchemaAction schemaAction, Package... packages) throws Exception {
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ISMDiscovery<BaseProperty> propertyDiscovery = new ISMDiscovery<>(BaseProperty.class);
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if(Objects.nonNull(packages)) {
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Arrays.stream(packages).forEach(p -> propertyDiscovery.addPackage(p));
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}
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propertyDiscovery.discover();
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for(Class<BaseProperty> property : propertyDiscovery.getDiscovered()) {
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logger.trace("Going to manage : {}", property);
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schemaAction.managePropertyClass(property);
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}
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ISMDiscovery<BaseEntity> entityDiscovery = new ISMDiscovery<>(BaseEntity.class);
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if(Objects.nonNull(packages)) {
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Arrays.stream(packages).forEach(p -> entityDiscovery.addPackage(p));
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}
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entityDiscovery.discover();
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for(Class<BaseEntity> entity : entityDiscovery.getDiscovered()) {
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logger.trace("Going to manage : {}", entity);
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schemaAction.manageEntityClass(entity);
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}
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@SuppressWarnings("rawtypes")
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ISMDiscovery<BaseRelation> relationDiscovery = new ISMDiscovery<BaseRelation>(BaseRelation.class);
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if(Objects.nonNull(packages))
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Arrays.stream(packages).forEach(p -> relationDiscovery.addPackage(p));
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relationDiscovery.discover();
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for(@SuppressWarnings("rawtypes")
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Class<BaseRelation> relation : relationDiscovery.getDiscovered()) {
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logger.trace("Going to manage : {}", relation);
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schemaAction.manageRelationClass(relation);
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}
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}
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}
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