GuidedRuleDRLSourceService.java

/*
 * Copyright 2013 Red Hat, Inc. and/or its affiliates.
 *
 * 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
 *
 *       http://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.
 */

package org.drools.workbench.screens.guided.rule.backend.server;

import java.util.ArrayList;
import java.util.Collection;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;

import org.drools.workbench.models.commons.backend.rule.RuleModelDRLPersistenceImpl;
import org.drools.workbench.models.commons.backend.rule.RuleModelIActionPersistenceExtension;
import org.drools.workbench.models.datamodel.rule.RuleModel;
import org.drools.workbench.screens.guided.rule.service.GuidedRuleEditorService;
import org.drools.workbench.screens.guided.rule.type.GuidedRuleDRLResourceTypeDefinition;
import org.kie.workbench.common.services.backend.source.BaseSourceService;
import org.kie.workbench.common.services.shared.source.SourceGenerationFailedException;
import org.uberfire.backend.server.util.Paths;
import org.uberfire.java.nio.file.Path;

@ApplicationScoped
public class GuidedRuleDRLSourceService
        extends BaseSourceService<RuleModel> {

    @Inject
    private GuidedRuleDRLResourceTypeDefinition resourceType;

    @Inject
    private GuidedRuleEditorService guidedRuleEditorService;

    private Collection<RuleModelIActionPersistenceExtension> persistenceExtensions = new ArrayList<>();

    @Inject
    public GuidedRuleDRLSourceService(final Instance<RuleModelIActionPersistenceExtension> persistenceExtensionInstance) {
        persistenceExtensionInstance.forEach(persistenceExtensions::add);
    }

    @Override
    public String getPattern() {
        return resourceType.getSuffix();
    }

    @Override
    public String getSource(final Path path,
                            final RuleModel model) throws SourceGenerationFailedException {
        try {
            return new StringBuilder().append(RuleModelDRLPersistenceImpl.getInstance().marshal(model,
                                                                                                persistenceExtensions)).toString();
        } catch (Exception e) {
            throw new SourceGenerationFailedException(e.getMessage());
        }
    }

    @Override
    public String getSource(final Path path) throws SourceGenerationFailedException {
        return getSource(path,
                         guidedRuleEditorService.load(Paths.convert(path)));
    }
}