org.flowable.ui.modeler.rest.app.FormsResource.java Source code

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Here is the source code for org.flowable.ui.modeler.rest.app.FormsResource.java

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/* 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.flowable.ui.modeler.rest.app;

import com.fasterxml.jackson.databind.ObjectMapper;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.StringUtils;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;
import org.flowable.ui.common.model.ResultListDataRepresentation;
import org.flowable.ui.modeler.domain.AbstractModel;
import org.flowable.ui.modeler.domain.Model;
import org.flowable.ui.modeler.model.form.FormRepresentation;
import org.flowable.ui.modeler.repository.ModelRepository;
import org.flowable.ui.modeler.repository.ModelSort;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author Tijs Rademakers
 */
@RestController
@RequestMapping("/app/rest/form-models")
public class FormsResource {

    private static final Logger LOGGER = LoggerFactory.getLogger(FormsResource.class);

    private static final int MIN_FILTER_LENGTH = 2;

    @Autowired
    protected ModelRepository modelRepository;

    @Autowired
    protected ObjectMapper objectMapper;

    @RequestMapping(method = RequestMethod.GET, produces = "application/json")
    public ResultListDataRepresentation getForms(HttpServletRequest request) {

        // need to parse the filterText parameter ourselves, due to encoding issues with the default parsing.
        String filter = null;
        List<NameValuePair> params = URLEncodedUtils.parse(request.getQueryString(), Charset.forName("UTF-8"));
        if (params != null) {
            for (NameValuePair nameValuePair : params) {
                if ("filter".equalsIgnoreCase(nameValuePair.getName())) {
                    filter = nameValuePair.getValue();
                }
            }
        }
        String validFilter = makeValidFilterText(filter);

        List<Model> models = null;
        if (validFilter != null) {
            models = modelRepository.findByModelTypeAndFilter(AbstractModel.MODEL_TYPE_FORM, validFilter,
                    ModelSort.NAME_ASC);

        } else {
            models = modelRepository.findByModelType(AbstractModel.MODEL_TYPE_FORM, ModelSort.NAME_ASC);
        }

        List<FormRepresentation> reps = new ArrayList<>();

        for (Model model : models) {
            reps.add(new FormRepresentation(model));
        }

        Collections.sort(reps, new NameComparator());

        ResultListDataRepresentation result = new ResultListDataRepresentation(reps);
        result.setTotal(Long.valueOf(models.size()));
        return result;
    }

    protected String makeValidFilterText(String filterText) {
        String validFilter = null;

        if (filterText != null) {
            String trimmed = StringUtils.trim(filterText);
            if (trimmed.length() >= MIN_FILTER_LENGTH) {
                validFilter = "%" + trimmed.toLowerCase() + "%";
            }
        }
        return validFilter;
    }

    class NameComparator implements Comparator<FormRepresentation> {
        @Override
        public int compare(FormRepresentation o1, FormRepresentation o2) {
            return o1.getName().toLowerCase().compareTo(o2.getName().toLowerCase());
        }
    }
}