/**
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.addon.javaee.rest.ui;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.inject.Inject;
import javax.persistence.Id;
import javax.ws.rs.core.MediaType;
import org.jboss.forge.addon.convert.Converter;
import org.jboss.forge.addon.javaee.ejb.EJBFacet;
import org.jboss.forge.addon.javaee.ejb.ui.EJBSetupWizardImpl;
import org.jboss.forge.addon.javaee.jpa.JPAFacet;
import org.jboss.forge.addon.javaee.jpa.ui.setup.JPASetupWizard;
import org.jboss.forge.addon.javaee.rest.RestFacet;
import org.jboss.forge.addon.javaee.rest.generation.RestGenerationContext;
import org.jboss.forge.addon.javaee.rest.generation.RestResourceGenerator;
import org.jboss.forge.addon.javaee.rest.generator.impl.EntityBasedResourceGenerator;
import org.jboss.forge.addon.javaee.ui.AbstractJavaEECommand;
import org.jboss.forge.addon.parser.java.facets.JavaSourceFacet;
import org.jboss.forge.addon.parser.java.resources.JavaResource;
import org.jboss.forge.addon.projects.Project;
import org.jboss.forge.addon.text.Inflector;
import org.jboss.forge.addon.ui.command.PrerequisiteCommandsProvider;
import org.jboss.forge.addon.ui.context.UIBuilder;
import org.jboss.forge.addon.ui.context.UIContext;
import org.jboss.forge.addon.ui.context.UIExecutionContext;
import org.jboss.forge.addon.ui.hints.InputType;
import org.jboss.forge.addon.ui.input.UIInput;
import org.jboss.forge.addon.ui.input.UISelectMany;
import org.jboss.forge.addon.ui.input.UISelectOne;
import org.jboss.forge.addon.ui.metadata.UICommandMetadata;
import org.jboss.forge.addon.ui.metadata.WithAttributes;
import org.jboss.forge.addon.ui.result.NavigationResult;
import org.jboss.forge.addon.ui.result.Result;
import org.jboss.forge.addon.ui.result.Results;
import org.jboss.forge.addon.ui.result.navigation.NavigationResultBuilder;
import org.jboss.forge.addon.ui.util.Categories;
import org.jboss.forge.addon.ui.util.Metadata;
import org.jboss.forge.roaster.model.Member;
import org.jboss.forge.roaster.model.source.JavaClassSource;
import org.jboss.shrinkwrap.descriptor.api.persistence.PersistenceCommonDescriptor;
import org.jboss.shrinkwrap.descriptor.api.persistence.PersistenceUnitCommon;
/**
* Generates REST endpoints from JPA Entities
*
* @author <a href="ggastald@redhat.com">George Gastaldi</a>
*/
public class RestEndpointFromEntityCommand extends AbstractJavaEECommand implements PrerequisiteCommandsProvider
{
@Inject
@WithAttributes(label = "Content Type", defaultValue = MediaType.APPLICATION_JSON, required = true)
private UISelectOne<String> contentType;
@Inject
@WithAttributes(label = "Targets", required = true)
private UISelectMany<JavaClassSource> targets;
@Inject
@WithAttributes(label = "Generator", required = true)
private UISelectOne<RestResourceGenerator> generator;
@Inject
@WithAttributes(label = "Persistence Unit", required = true)
private UISelectOne<String> persistenceUnit;
@Inject
@WithAttributes(label = "Target Package Name", required = true, type = InputType.JAVA_PACKAGE_PICKER)
private UIInput<String> packageName;
@Inject
@WithAttributes(label = "Overwrite existing classes?", enabled = false, defaultValue = "false")
private UIInput<Boolean> overwrite;
@Inject
private EntityBasedResourceGenerator defaultResourceGenerator;
@Inject
private Inflector inflector;
@Override
public UICommandMetadata getMetadata(UIContext context)
{
return Metadata.from(super.getMetadata(context), getClass()).name("REST: Generate Endpoints From Entities")
.description("Generate REST endpoints from JPA entities")
.category(Categories.create(super.getMetadata(context).getCategory(), "JAX-RS"));
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public void initializeUI(UIBuilder builder) throws Exception
{
UIContext context = builder.getUIContext();
Project project = getSelectedProject(context);
JPAFacet<PersistenceCommonDescriptor> persistenceFacet = project.getFacet(JPAFacet.class);
JavaSourceFacet javaSourceFacet = project.getFacet(JavaSourceFacet.class);
List<JavaClassSource> allEntities = persistenceFacet.getAllEntities();
List<JavaClassSource> supportedEntities = new ArrayList<>();
for (JavaClassSource entity : allEntities)
{
if (isEntityWithSimpleKey(entity))
{
supportedEntities.add(entity);
}
}
targets.setValueChoices(supportedEntities);
targets.setItemLabelConverter(new Converter<JavaClassSource, String>()
{
@Override
public String convert(JavaClassSource source)
{
return source == null ? null : source.getQualifiedName();
}
});
List<String> persistenceUnits = new ArrayList<>();
List<PersistenceUnitCommon> allUnits = persistenceFacet.getConfig().getAllPersistenceUnit();
for (PersistenceUnitCommon persistenceUnit : allUnits)
{
persistenceUnits.add(persistenceUnit.getName());
}
if (!persistenceUnits.isEmpty())
{
persistenceUnit.setValueChoices(persistenceUnits).setDefaultValue(persistenceUnits.get(0));
}
// TODO: May detect where @Path resources are located
packageName.setDefaultValue(javaSourceFacet.getBasePackage() + ".rest");
contentType.setValueChoices(Arrays.asList(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML));
generator.setDefaultValue(defaultResourceGenerator);
if (context.getProvider().isGUI())
{
generator.setItemLabelConverter(new Converter<RestResourceGenerator, String>()
{
@Override
public String convert(RestResourceGenerator source)
{
return source == null ? null : source.getDescription();
}
});
}
else
{
generator.setItemLabelConverter(new Converter<RestResourceGenerator, String>()
{
@Override
public String convert(RestResourceGenerator source)
{
return source == null ? null : source.getName();
}
});
}
builder.add(targets)
.add(generator)
.add(contentType)
.add(packageName)
.add(persistenceUnit)
.add(overwrite);
}
private boolean isEntityWithSimpleKey(JavaClassSource entity)
{
for (Member<?> member : entity.getMembers())
{
// FORGE-823 Only add entities with @Id as valid entities for REST resource generation.
// Composite keys are not yet supported.
if (member.hasAnnotation(Id.class))
{
return true;
}
}
return false;
}
@Override
public Result execute(final UIExecutionContext context) throws Exception
{
UIContext uiContext = context.getUIContext();
RestGenerationContext generationContext = createContextFor(uiContext);
Set<JavaClassSource> endpoints = generateEndpoints(generationContext);
Project project = generationContext.getProject();
JavaSourceFacet javaSourceFacet = project.getFacet(JavaSourceFacet.class);
List<JavaResource> selection = new ArrayList<>();
for (JavaClassSource javaClass : endpoints)
{
selection.add(javaSourceFacet.saveJavaSource(javaClass));
}
uiContext.setSelection(selection);
return Results.success("Endpoint created");
}
private Set<JavaClassSource> generateEndpoints(RestGenerationContext generationContext) throws Exception
{
RestResourceGenerator selectedGenerator = generator.getValue();
Set<JavaClassSource> classes = new HashSet<>();
for (JavaClassSource target : targets.getValue())
{
generationContext.setEntity(target);
List<JavaClassSource> artifacts = selectedGenerator.generateFrom(generationContext);
classes.addAll(artifacts);
}
return classes;
}
@Override
protected boolean isProjectRequired()
{
return true;
}
private RestGenerationContext createContextFor(final UIContext context)
{
RestGenerationContext generationContext = new RestGenerationContext();
generationContext.setProject(getSelectedProject(context));
generationContext.setContentType(contentType.getValue());
generationContext.setPersistenceUnitName(persistenceUnit.getValue());
generationContext.setTargetPackageName(packageName.getValue());
generationContext.setInflector(inflector);
return generationContext;
}
@Override
public NavigationResult getPrerequisiteCommands(UIContext context)
{
NavigationResultBuilder builder = NavigationResultBuilder.create();
Project project = getSelectedProject(context);
if (project != null)
{
if (!project.hasFacet(RestFacet.class))
{
builder.add(RestSetupWizard.class);
}
if (!project.hasFacet(JPAFacet.class))
{
builder.add(JPASetupWizard.class);
}
if (!project.hasFacet(EJBFacet.class))
{
builder.add(EJBSetupWizardImpl.class);
}
}
return builder.build();
}
}