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Core ACS AEM Commons OSGi Bundle. Includes commons utilities.

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/*
 * #%L
 * ACS AEM Commons Bundle
 * %%
 * Copyright (C) 2013 Adobe
 * %%
 * 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.
 * #L%
 */

package com.adobe.acs.commons.quickly.operations;

import com.adobe.acs.commons.quickly.Command;
import com.adobe.acs.commons.quickly.results.Result;
import org.apache.commons.lang.StringUtils;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;

import java.util.Collection;
import java.util.List;

public abstract class AbstractOperation implements Operation {
    /**
     * Gets results of the operation.
     *
     * @param request the Request object
     * @param response the Response object
     * @param cmd the Command
     * @return a list of Results
     * @throws JSONException
     */
    @Override
    public Collection getResults(final SlingHttpServletRequest request,
                                         final SlingHttpServletResponse response,
                                         final Command cmd) {

        if (StringUtils.isBlank(cmd.getParam())) {
            return this.withoutParams(request, response, cmd);
        } else {
            return this.withParams(request, response, cmd);
        }
    }

    /**
     * Returns a list of results for a Command without params.
     *
     * @param request the Request object
     * @param response the Response object
     * @param cmd the Command object
     * @return the list of Results
     */
    protected abstract List withoutParams(final SlingHttpServletRequest request,
                                                  final SlingHttpServletResponse response,
                                                  final Command cmd);

    /**
     * Returns a list of results for a Command with params.
     *
     * @param request the Request object
     * @param response the Response object
     * @param cmd the Command object
     * @return the list of Results
     */
    protected abstract List withParams(final SlingHttpServletRequest request,
                                               final SlingHttpServletResponse response,
                                               final Command cmd);
}