AbstractDiagramLookupService.java

/*
 * Copyright 2017 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.kie.workbench.common.stunner.backend.service;

import java.util.List;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;
import org.kie.workbench.common.stunner.core.backend.lookup.impl.AbstractVFSLookupManager;
import org.kie.workbench.common.stunner.core.diagram.Diagram;
import org.kie.workbench.common.stunner.core.diagram.Metadata;
import org.kie.workbench.common.stunner.core.graph.Graph;
import org.kie.workbench.common.stunner.core.lookup.criteria.AbstractCriteriaLookupManager;
import org.kie.workbench.common.stunner.core.lookup.diagram.DiagramLookupManager;
import org.kie.workbench.common.stunner.core.lookup.diagram.DiagramLookupRequest;
import org.kie.workbench.common.stunner.core.lookup.diagram.DiagramRepresentation;
import org.kie.workbench.common.stunner.core.lookup.diagram.DiagramRepresentationImpl;
import org.kie.workbench.common.stunner.core.service.BaseDiagramService;
import org.kie.workbench.common.stunner.core.service.DiagramLookupService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.uberfire.backend.vfs.Path;
import org.uberfire.io.IOService;

public abstract class AbstractDiagramLookupService<M extends Metadata, D extends Diagram<Graph, M>>
        extends AbstractVFSLookupManager<D, DiagramRepresentation, DiagramLookupRequest>
        implements DiagramLookupManager,
                   DiagramLookupService {

    private static final Logger LOG = LoggerFactory.getLogger(AbstractDiagramLookupService.class.getName());

    private final BaseDiagramService<M, D> diagramService;

    public AbstractDiagramLookupService(final IOService ioService,
                                        final BaseDiagramService<M, D> diagramService) {
        super(ioService);
        this.diagramService = diagramService;
    }

    @Override
    protected boolean acceptsPath(final Path path) {
        return diagramService.accepts(path);
    }

    @Override
    protected D getItemByPath(final Path path) {
        return diagramService.getDiagramByPath(path);
    }

    @Override
    protected List<D> getItems(final DiagramLookupRequest request) {
        org.uberfire.java.nio.file.Path root = parseCriteriaPath(request);
        return getItemsByPath(root);
    }

    @Override
    protected boolean matches(final String criteria,
                              final Diagram item) {
        return true;
    }

    @Override
    protected DiagramRepresentation buildResult(final Diagram item) {
        return new DiagramRepresentationImpl.DiagramRepresentationBuilder(item).build();
    }

    protected org.uberfire.java.nio.file.Path parseCriteriaPath(final DiagramLookupRequest request) {
        String criteria = request.getCriteria();
        if (StringUtils.isEmpty(criteria)) {
            LOG.error("Empty criteria not supported.");
            throw new UnsupportedOperationException("Empty criteria not supported.");
        } else {
            Map<String, String> criteriaMap = AbstractCriteriaLookupManager.parseCriteria(criteria);
            String pathRaw = criteriaMap.get("path");
            if (!StringUtils.isEmpty(pathRaw)) {
                // TODO: Still not need, here should parse the path criteria value and create and return an instance
                // of org.uberfire.java.nio.file.Path for it.
                return null;
            } else {
                LOG.error("No path criteria found..");
                throw new UnsupportedOperationException("No path criteria found.");
            }
        }
    }

    protected BaseDiagramService<M, D> getDiagramService() {
        return diagramService;
    }
}