limitfactoryutils.java

来自「exTreme taglib的使用」· Java 代码 · 共 75 行

/*
 * Copyright 2004 original author or authors.
 *
 * 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.extremecomponents.table.limit;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.extremecomponents.table.core.TableConstants;

/**
 * @author Jeff Johnston
 */
final class LimitFactoryUtils {

    private LimitFactoryUtils() {
    }

    static Sort getSort(Map sortedParameters) {
        if (sortedParameters == null) {
            return new Sort();
        }

        for (Iterator iter = sortedParameters.keySet().iterator(); iter.hasNext();) {
            String property = (String) iter.next();
            String value = (String) sortedParameters.get(property);

            if (value.equals(TableConstants.SORT_DEFAULT)) {
                return new Sort();
            }

            return new Sort(property, value);
        }

        return new Sort();
    }

    static FilterSet getFilterSet(Map filteredParameters) {
        if (filteredParameters == null) {
            return new FilterSet();
        }

        String action = (String) filteredParameters.get(TableConstants.ACTION);
        List filters = new ArrayList();

        for (Iterator iter = filteredParameters.keySet().iterator(); iter.hasNext();) {
            String property = (String) iter.next();
            String value = (String) filteredParameters.get(property);

            if (StringUtils.isBlank(value) || property.equals(TableConstants.ACTION)) {
                continue;
            }

            filters.add(new Filter(property, value));
        }

        return new FilterSet(action, (Filter[]) filters.toArray(new Filter[filters.size()]));
    }
}